
The Radeon 4870 X2 has 2 GB, 750 MHz, GDDR5: From $369.99
Graphics cards, also called video cards, can be an awesome PC accessory, especially for serious gamers, but aren’t a necessary component to operate a system for simple daily use. If you want to see more than just 2-D, graphics cards enhance the visual experience and can handle 3-D displays better than the standard system options.
With tons to choose from, the basic requirements are simple. Though the graphics cards are sold by different manufacturers, like ASUS and EVGA, they will generally have chipsets from either NVIDIA or AMD/ATI. These graphics giants are constantly one-upping each other in terms of mods and pricing, keeping the market competitive and consumers on the lookout for the latest equipment developments.
Cost:
They can cost from around $50 for a simple upgrade to $500 for the latest and greatest, but unless you’re an animator, designer or even a hardcore gamer, something in the cheaper category will probably suffice.
The NVIDIA GeForce GTX 285 has 1GB, 648 MHz, and GDDR3. From: $339.99.
System Requirements:
When buying a graphics card, take a look at your system requirements and choose one that fits with them. You might find that you need to boost your power supply as graphics cards can consume a lot, possibly taking the majority of your system’s supply. If you’re truly a dedicated gaming fan, after boosting the power you’ll most likely want to link two cards together with an SLI bridge for even better performance.
Ports: PCIEG/AGP/PCI
Most systems will have an AGP (accelerated graphics port) which allows for better performance. However, if for some reason your computer is dated from the 1990s, the graphics card will use the PCI slot on your motherboard instead of a dedicated port. The AGP is currently being replaced with the PCI Express x16 or PCIEG, which transfers twice as fast. You’ll find the PCI Express format to be standard on the latest graphics cards coming to market as of 2009.
Memory:
Always a factor, the more memory a graphics card has, the better it should work. The NVIDIA or AMD/ATI chipset is partnered with DDR — high-speed memory known as double-data rate memory — and rated in MB, with GB likely becoming more common very soon. Advances in memory have given us DDR2, GDDR4 and soon GDDR5 on newer cards. You’ll want at least 128MB for standard use. Higher end cards will have 512MB for those complex 3-D images.
Speed:
Another vital spec, the faster the graphics card’s memory, the better the performance will be. Sounds familiar, right? It makes no sense to get a card with tons of memory and no speed to apply it properly. Clock rates are effectively between 400 MHz and 3.8 GHz.
Find at Smarter.com: Shop for more graphics cards.
Sources: Anandtech, HowStuffWorks , EzineArticles