Tuesday, September 29, 2009

Tips for buying a motherboard

We must take into account when choosing a motherboard.

Well, we're riding our computer and we have chosen the processor you want to mount (see tutorial What is better AMD or Intel?).

Once seen if we will assemble a computer based on Intel (socket 755) or AMD (socket AM2) it's time to see that we'll put motherboard.

As can be observed, since AMD does not have the socket 939. This is because a socket is destined to disappear, because on one side only supports DDR (which are increasingly selling less) and partly because AMD already has a few processors only for this type of socket, replacing the models has little by little by the AM2 socket, supporting DDR2 and also have a considerably lower consumption.

All manufacturers of motherboards (with the exception of Intel, which only makes motherboards for Intel processors) have plates for both processors and subject to the specific characteristics of each type of processor (Intel or AMD) are plates that offer the same benefits and grades for both processors. In saying this I mean, for example, we will not find a motherboard for Intel to support HyperTransport, as this technology is unique to AMD processors.

At this point we must clarify one very important thing. As we say in Spain, nobody gives hard four pesetas. By this I mean a plate of high performance, good quality and cheap there. There might be differences in cost between a brand and another, but equal quality performance and these differences will always be small. If for example we saw a plate with several characteristics and performance of a manufacturer X for 200 euros, we can find a motherboard with the same quality, performance and features in another manufacturer for 190 or 185, but not by 150 or 125.

The quality of a motherboard is not dependent on performance. It depends on the quality of components and that the services offered are not picks, but constant.

There is a minimum required number of elements to a current motherboard must incorporate. Let's see one of these:

- Processors supported.
Within its range (socket type) must bear all the available processors.

- Memory.
The most common is that support DDR2 (although there are some motherboards for socket 775 DDR (Intel) and socket 939 (AMD)).
Must be at least 4 slots for memory, with a minimum capacity of 4GB in total, and supports Dual Channel, as well as frequencies of 533, 667 and 800Mhz.
There are some low cost boards only have two slots, supporting only 2Gb of RAM.

- 100mbps network card.
Today all motherboards incorporate this element. In high-end plates often lay 2 cards, one being the type 100/1000.

- Expansion Slots.
The minimum requirement is:
16x PCIe 1 slot (for graphics, even in the case of plates with embedded graphics).
2 Slots PCIe 1x.
2 PCI 2.2.

- Front Side Bus
Must support an FSB of 1066 in the case of Intel and 2000 for AMD.

- SATA2 connectors.
At least 4 connectors for SATA2. In the medium and high is normal to have 6 or 8 SATA2.

- Support for hardware RAID0, RAID1 and JBOD.
In mid-range boards also have to bear higher RAID 0 +1 and RAID5.

- IDE connector.
Typically have 2 IDE connectors (IDE1 and IDE2), but there are some plates with 3 IDE connectors (2 discs, usually RAID, and 1 exclusively for ATAPI devices) and more and more motherboards that only have 1 connector IDE ATA / ATAPI.

- USB 2.0 ports.
All current plates have a nice collection of USB 2.0 ports, both external and internal. In some cases reach up to 10 USB ports.

- Sound card.
Today all motherboards have built-in sound card, although this can be very different qualities. From plates with basic sound cards (in any case 6.1 as a minimum) to plates with medium and high end HD 8.1 sound card with digital output S / PDIF.

- Internal connector for serial port.
In the case of not having an external COM port must have at least one internal connector for serial port and have its corresponding output plate.

- Remote start capability.
Almost all current motherboards support remote boot (WoL and WoR).

- Cooling the chipset.
It is very important (especially if you're going to ask a high yield or we do Overclocking) that the motherboard has a good cooling system chipset.
With the increased benefits are many motherboards that incorporate Pipeline cooling rate for these chipsets, in some cases supported by fans.

- Power connectors in motherboard cooling (fans).
All motherboards have several power connectors for fans (CPU_FAN, CHASIS_FAN, POWER_FAN).
The more connectors of this type are better because through these connectors we can control various parameters relating to these fans (state, speed ...).

Ability to boot from different devices.
More and more motherboards that support USB booting.

The plates also tend to have high end with:

- IEEE1394 Ports.
Normally one internal and one external.

- External SATA2 connector.
More and more motherboards that have an external connector on the rear panel SATA2.

WiFi network card.
It is increasingly common for high-end motherboards incorporate your connectivity between WiFi cards.

As you can see on this list do not appear or parallel ports or external serial ports. That's because of an increasing number plates that lack this kind of port, especially in the upper range. For most parallel port (and practically only) use the printer connector, and these already are connected to the USB port and in the case of the serial port are rare devices that use this port at present, limited in practice and EPROM burners HyperTerminal Configuration link a particular peripheral and little else. In both cases on the market to USB adapters, both serial and parallel port.

To this we must add that each manufacturer can assemble a set of specific tools to handle issues like the Overclocking, BIOS upgrade from Windows control software temperatures and fans, etc..

One of the determining factors in a motherboard is the chipset it uses. This chipset is to be responsible for supervising the operation and performance of the motherboard, the chipset used to be a determinant for the price of the motherboard.

The most common chipset boards are the chipset as NVIDIA, Intel and VIA. Some boards rely on economic SiS or ALi chipset.

For his kind of graphical output motherboards can divide into three groups:

Integrated graphics.
This is usually plates and economic performance generally low to medium (NOTE, this does not mean that their quality is too low to medium).
This type of plate is ideal when seeking a low-cost computer, which we will not ask a high-performance graphics (games of last generation CAD / CAM, renderings).
They are usually graphics 64Mb or 128Mb, using shared memory (reserve this motherboard installed RAM memory), so that the RAM that we must subtract the one on the chart.
In any event must have a 16x PCIe slot to put in any time a separate graphics card.

Chart not integrated.
It is the most common type of motherboard. This group fits a variety of motherboards, with yields ranging from medium to higher.
Its major peculiarity is that they have only one PCIe 16x slot dedicated to graphics (although they may carry a second 8x or 16x PCIe slot not support SLI).

Graphic SLI or CrossFire.
The technologies are both SLI and CrossFire multi-GPU technology (developed in the case of SLI by Nvidia and the case for ATI CrossFire) that allow for benefits such as adding the power of two graphics cards in a single output or connect multiple monitors to a computer.

You can see more about this kind of plot in the tutorial system What is SLI and CrossFire system.

It is in all cases of high-end motherboards, as the smooth operation of this technology requires high performance.

They are also high-priced motherboards, so it is not recommended purchase if you are not going to use this technology, especially bearing in mind that almost all manufacturers have within their respective ranges motherboards prestacionesy the same characteristics but without SLI or CrossFire technology.

Motherboards SLI or CrossFire type are recommended both for players who require maximum performance for next generation gaming to design professionals. Just note that if we use a motherboard of this type with only a graphics card will have absolutely no advantage on a motherboard with identical characteristics, but without support SLI or CrossFire.

Recently emerging market a series of high-end motherboards with concrete specifications in two fields:

Badges for Windows Vista.
These high-end plates are designed to get maximum performance, both in performance and security in this operating system.
These plates feature a dedicated module for ReadyBoost Flash memory and a connection for TPM modules on which to run the BitLocker encryption system hardware.
They often also bring other extras such as remote controls to control Windows Media Center and even small monitors.

Boards games.
Sacer plates are designed to the most games of last generation. These high-end specialty plates between which we can highlight the series Manufacturer UP DFI Lanparty or ASUS Striker series.
In this sort of board is usually boosted especially everything related to the overclocking, and with graphics support, treated in practically all cases of SLI or CrossFire boards.

Seeing this is important when deciding on a motherboard or other have clear which is the preferred use we are going to give. Buy a high end motherboard for office automation, Internet and occasionally a game or another is wasting money.

We must also think of the other components (processor, graphics card and memory) are going to mount. Think of the computer as a whole in which the components should be as balanced as possible. Do you imagine a high-end motherboard with a Celeron processor and 512Mb of RAM?. Or a Core 2 Duo E6700 and 4Gb of RAM on a plate of 60 euros?.

One issue to take into account when choosing our motherboard is its quality and high quality motherboards cheap simply do not exist. Another thing is they have a better or worse value for money, but a motherboard (or any other product) has a better value for money does not mean it is better than other more expensive means that only for their benefits is the best you can buy for that price.

Very important is the support that the brand of the motherboard offers. To do this we must look both at the support (warranty service) and support on the issue of drivers and updates via the Web.

We must also look at both the compatibility and the existing support for the operating system you want to install either the Windows, Linux, OS X or whatever.

Grounds so far relates to configure a new computer, but what happens when it is a motherboard upgrade or replacement for damage from this?.

For in this latter case we have a keyword: COMPATIBILITY.

By this I mean that the first thing we need to find a motherboard that is as compatible as possible with the other hardware we have, particularly to avoid large expenditures.

Here we will find quite a range to choose smaller. This range will be less the older we leave the team, so in many cases we even have to make do with what little we find.

As an example of this, currently in production there any motherboard that supports SDRAM memory and there are fewer that support AGP graphics cards.

This to say nothing of motherboards for AMD Intel 478 or 754, where the real supply is limited to one or two brands.

One brand that keeps making motherboards for these procesasores is Asrock.
This is a brand without being first row manufactures motherboards with good quality and very good value for money.

In the pictures above we can see two Asus motherboard, in both cases the plate with onboard graphics and DDR memory.

The left image corresponds to the model K8NF6P-VSTA (AMD 754), with a PCIe graphics port and the right is a P4VM800 (INTEL 478), in this case with an AGP port for graphics. This same board also made with port PCIe (P4VM890).
READ MORE - Tips for buying a motherboard

Tips on buying a scanner

While digital communication has been established, many documents, invoices or photographs are printed on paper yet. It is customary to keep them on the computer for better organization, so you'll need a scanner to scan. Before buying one, however, must take into account the role fulfilled, since the requirements are different if you want to scan photos, scan documents or do graphic design work in professional environments. The following explains what factors determine the choice.


The maximum resolution is a crucial aspect in buying a scanner. A higher resolution, better quality of the scanned image. This data is shown by the number of dots per inch (in abbreviation, "ppp" or "dpi") that captures the device.

There are two technologies of resolution: optical and interpolated. The optical resolution, or actual, shows the amount of individual points of an image captured by the sensor. Interpolated resolution is accomplished with a software procedure, ie an artificial resolution that generates new points from other real closer. Each time you increase the image by interpolation, the number of points generated is larger, the image loses real information on their composition and, consequently, low quality. In addition, users can set the scanning resolution, ranging from minimum to maximum 75 dpi interpolated resolution.

A higher resolution, better quality of the scanned image

When scanning an image, one must seek to work with a resolution that exceeds the final image that was desired, since by reducing it will not lose information between points and, therefore, maintain the quality during the scanning process. By contrast, when working with a screen whose resolution is lower than desired in the final image and quality information will be lost.

When using the scanner to digitize copies and keep all your information, you must choose a team with a good optical resolution. If you want to scan documents, the interpolated resolution is a good solution, provided that the scan will clearly display text characters.

Software Included

It is recommended that the software that came with the scanner to control their functions easier to use and configure, since the application will be used to scan documents and images. These devices include a driver (controller), known as "Twain", which allows using the scanner from any application that has support for it. It can scan an image or a document without using an intermediate program.

If we then intend to use the scanner to scan documents, you should have a software optical character recognition (OCR), which converts these images into a plain text.


Two sensor technologies are suitable for scanning images. Most scanners available on the market use CIS or CSD. Each capture images in a differentiated way. Technology scans CIS (contact image sensor) have several modules located below the scanning glass, optical information capturing 24 bit.

CSD (charge-coupled device) with photoelectric cells that record an image, with a speed and color depth greater than that of CIS. It is therefore suitable sensor technology to scan documents at high resolution

Color Depth

This value indicates the scanner's ability to process the color depth and contrast of an image. The range most often used to work is 24 bits, but has developed a device that works with a greater color depth, as 32 bits and 48 bits. As a rule, deeper color, greater precision in the details, allowing, in large images, captured in digitizing its entire color range. This factor is of great importance for the functions intended for professional graphic design environment.

Transparency Adapter

To scan photographic negatives or slides, use an additional adapter that translates the transparency to a suitable file size. It is advisable to ensure that the device chosen include this among the accessories. Otherwise, you will have to buy it independently.
READ MORE - Tips on buying a scanner

Tips buying Computer

Buying a PC is a very important decision and very complex because, apart from a huge variety of components that vary almost weekly basis we have to take several small decisions, we must be careful that we do not pig in a poke, some what no one has the certainty that you will not pass by very experienced you are, but if you're going to sucker you make it easier.

This leads to a number of things that we all demand at the time of buying a new computer or replacing an old one:
If you're an expert not alone and if you're not, accompanying a good friend who knows far more than you and of course not party to the business.
Collateral, seriously. (a conversation with the clerk that we can induce not a serious site but nothing assures us seriously because they are usually good actors who know more than computer interpretation). If you have spoken ill of a place do not ever poke their noses around, even if you computer is worth half passes, at least you've been warned others not. Naturally, it requires BILL.
All peripherals included in the team accompanied by their drivers.
Requiring a formatted hard disk with nothing but buy the original software needed (or not, because it is GNU) as this ensures that we can install everything starting from a formatted hard disk, a Windows 98 boot disk and the CD itself from the Windows 9X / ME, without getting into issues or interruptions in the computer BIOS or other surprises. This will verify that the chipset has no trouble recognizing plug'n'play peripherals in the system installation, common in some AMD.
In the event of problems point all anomalies and messages displayed on screen in a paper and then show it to the seller and technical service.
Fleeing components that only run on Windows, such as software modems (mostly interns), WinPrinters, etc.. Van too slow, fail more than a gun fair and who knows maybe you have to print anything in MS-DOS or Linux end all. Even if you only use Windows do not interest you are twice as slow as an external modem and give many real configuration problems. If you opt for an internal modem finally winmodem not (there are very few) to keep you pig in a poke, it is best to say that Linux will be installed, even as a second OS and ask if you have a problem (although not true). You want to actually install and check that everything goes well, then you can leave the computer or not, depending on tastes.
Verify that your computer has all the ports that you must have one to one. Teams with a single serial port are undesirable, of whom or what have you not say anything.

Although computer configurations vary almost weekly I'll give you an idea of what could be a current general-purpose machine (though perhaps it is outdated in weeks):
Pentium 4 hipertreading: 3 Ghz or higher. The bus with a good fan, good heatsink and good thermal paste. Never Celeron, AMD does not recommend any.
Well designed box with fans in and out to form the ventilation circuit, also with USB inputs on the front (something really comfortable).
Flourishes such as trims for the floppy drive, CD-ROMs, etc. are very cute but plenty of problems.
Motherboard: good (Gigabyte. .. never VIA chipset) and without things such as integrated video cards, etc.. (unfortunately all now have integrated sound card, make sure it is disable), albeit with DUAL-BIOS, and many USB ports, 2 serial, 1 parallel, etc ... at least.
Memory: 1 GB DDR or more to hipertreading works best if divided into two equal modules, although this limits the possibilities for future expansion.
Operating system: whether they will require that the computer must have an operating system you can ask to be a Linux and, of course not charge you or a euro for him. (also serves as a 'test of professionalism' of the establishment, because if you say that is nonsense, put edges, arrogant, etc ... is because they have no idea of doing that and so is their lack of professionalism in the open , which is better to discover now that after buying when other problems arise).
Hard disk 160 GB or more, either, IDE or Serial ATA.
Monitor 17''SVGA or higher (preferably flat tube, the TFT can still give a little problem).
Sound Blaster Live not real problems.
2D/3D Graphics Card APGx8 (64Mb minimum) or higher, with MPEG-2 acceleration. The ATI and NVidia are pretty standard. Here if you can not accept an integrated graphics card under any circumstances.
* Recorder DVD-ROM dual layer dual (if not dual, that is at least -R/-RW, never only + R / + RW).
* Floppy 3.5 "IDE. Today there are computers without floppy drive (even some you can not put the connector lacking internally) but you are taking opportunities to share information (a USB floppy is not a good idea). DISCLAIMS SUCH EQUIPMENT! !
Semi-mechanical or mechanical keyboard with cable (or membrane or wireless).
Ball and optical mouse cable.
External Modem with standard serial port connection: 56 K minimum (that connect the external serial HSP never winmodem and provides very few configuration issues as opposed to internal and external by USB).
I would not ADSL internet connection, but if you opt for it unless it is for the router.
PCI Network card (preferably 3COM Fast Ethernet 10/100 or RealTek)
Desktop Scanner USB, SCSI was better but have ceased to function in most modern motherboards. If at the end opt for one parallel, which I do not recommend for anything, at least buy yourself a printer sharer MANUAL and set the scanner as a second printer if the case.
Capture TV with BT878 chip to ensure compatibility with the software, especially Linux. This is optional but for the price they are worth buying from the outset.
Strip, but do not spend a Paxton in it, because I had two faces and one was removed by sputtering and the second with surge exploded. Simply having real and grounding switch (this is a safe for your PC if you plugged into a good land outlet bright), ideal to have at least 8 plugs.

All peripherals must be supported by linux without more stories.

If at the end I've done and if you bought an AMD put him at least as many fans, including one on front bottom of your box to the air inlet and one on the upper back to the exit so as to forms a good airflow. Care also the subject of the plate and buenecitas and memory that are not too hot

source : usuarios.lycos.es/putusoft/trucospc/buypc.htm
READ MORE - Tips buying Computer

Thursday, September 3, 2009

VIA EPIA-EK10000G Eden-N 1.0GHz/Luke CoreFusion/DDR/SATA/A&V&L/M-ITX Motherboard

Price $ 258.99
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Specification Mfr Part Number: EPIA-EK10000G CPU: VIA Eden-N 1.0GHz Processor (Integrated in VIA 'Luke' CoreFusion Processing Platform) Chipset: VIA CN400 & VT8237R Memory: 1x 184pin DIMM support DDR-533/400 memory; Max capacity 1GB Slots: 1x PCI slot IDE/SATA: 2x ATA-133 channels; 2x SATA ports Audio: VIA VT1618 8-channel AC'97 CODEC Video: Integrated VIA Unichrome Pro AGP graphics with MPEG-2/4 acceleration LAN: VIA VT6103L 10/100 Base-T Ethernet PHY; VIA VT6107 Fast Ethernet Ports: 8x USB 2.0 ports (4 rear, 4 by headers); 2x PS2 ports; 2x Serial ports (1 rear, 1 by header); 1x Parallel port; 1x VGA port; 2x RJ45 LAN port; Audio I/O jacks Form Factor: Mini-ITX, 17 x 17 cm Package: Retail
READ MORE - VIA EPIA-EK10000G Eden-N 1.0GHz/Luke CoreFusion/DDR/SATA/A&V&L/M-ITX Motherboard

Nec Display Solutions As500 15".28 1280x1024 Crt

Price $ 99.99
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Bring superior clarity and unrivaled value to your customers' visual experience with the 15" (14" viewable) NEC AccuSync 500 CRT monitor. Designed specifically for small-to-medium-sized businesses and educational and home users, this model features a fine dot pitch for easy-to-read text and graphics, and NEC's exclusive OptiClear screen surface, which eliminates glare.FEATURESOptiClear« eliminates glare and reflection Go to the edge with FullScan« OSM« puts users in control Fine dot pitches enhance performance Find answers with 24/7 support Rest easy with 3-year warranty Detailed Specifications Active Display Area (Full Scan) Horizontal: 11.0 in. / 280 mm /Vertical: 8.3 in. / 210 mm (Dependent upon signal timing used) Active Display Area (Factory Setting) Horizontal: 10.6 in. / 270 mm / Vertical: 8.0 in. / 203 mm (Dependent upon signal timing used) Current Rating 1.5A @ 100 - 240 V Dimensions Net: 14.2 in. (W) x 14.9 in. (H) x 15.0 in. (D) 360 mm (W) x 380 mm (H) x 381 mm (D) / Gross: 17.7 in. (W) x 16.4 in. (H) x 18.7 in. (D) 450 mm (W) x 415 mm (H) x 475 mm (D) Display Colors Analog Input: Unlimited Colors (Dependent upon display card used) Input Video Signal ANALOG 0.7 Vp-p/75 Ohms Positive Operating Altitude 0 to 10,000 Feet Operating Humidity Range 30% to 80% Operating Temperature 0░ C to 35░ C Picture Tube/Display 15" (13.8" viewable image size), 90░ deflection, 0.28 mm trio dot pitch, medium short persistence phosphor, multi-layered, anti-static screen coating, semi-tint screen, Invar Shadow Mask and OptiClear« screen surface. Power Management IPM (Intelligent Power Manager) System, / EPA ENERGY STAR«, meets NUTEK based on2 power-saving modes Power Supply AC 100 - 240 V, 50/60 Hz Recommended Resolution 1024 x 768 @ 85 Hz Regulatory Approvals UL 1950, CSA C22.2 No. 950, FCC Rules Part 15 Class B, DHHS Rules 21 CFR, Sub Chapter J, ISO-9241-3, MPR-II, EPA Energy Star, NUTEK Resolutions Supported 640 x 480 @ 60 to 120 Hz / 800 x 600 @
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Amigo Conexant V.92 PCI DATA/FAX/TAM 56K Modem

Price $ 13.99
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Specification Mfr Part Number: AMI-CA58-PG,PCI,ROHS Data Mode ITU-T V.92 PCI Data Mode With Receive Rates upto 56Kbps And Transmit Rates upto 48Kbps ITU-T V.90 Data Mode With Receive Rates upto 56Kbps And Transmit Rates upto 33.6Kbps ITU-T V.34, V.32 bis, V.32, V.22 bis, V.22, V.23, And V.21; Bell 212A And Bell 103 ITU-T V.42 LAPM And MNP 2-4 Error Correction ITU-T V.44, V.42 bis And MNP 5 Data Compression FAX Mode Fax Mode With Send And Receive Rates upto 14.4Kbps ITU-T V.17, V.29, V.27 ter, And V.21 Channel 2 EIA/TIA 578 Class 1 And T.31 Class 1.0 Commands TAM Mode 8-bit U-Law/A-Law Coding (G.711) And 8-bit/16-bit Linear Coding 8KHz Sample Rate TAM Support With Concurrent DTMF Detect, Ring Detect And Caller ID (Optional)
READ MORE - Amigo Conexant V.92 PCI DATA/FAX/TAM 56K Modem

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