NVIDIA GT vs. GTX

NVIDIA is a company that manufactures graphics cards –which can be found in computer games to increase the quality of the appearance of the graphics that appear on a computer screen. The company’s latest version of their graphics cards, the GeForce 8 Series, is its first unified shaded architecture –meaning, a set of computational units that have been, essentially, unified in order to run a complex shadier.

The 8800 GT supports PCI-Express 2.0, the latest version of the computer expansion card. This card also has the distinction of being the first graphics card to offer a 65 nm process. The basic processing power of the GT contains 128 stream processors as well as contains a 256 bit memory interface and 512 MB of GDDR3 memory. The top heavy nature of the memory sacrifices the GT’s performance at higher resolutions –as well as graphic settings that tend to be high.

The 8800 GTX comes standard with a 768 MB GDDR3 RAM. The GPU core of the GTX is comparable to the GTS; however, unlike the GTS, the GTX does not disable parts of the GPU or reduce RAM size and bus width in order to keep the production costs low. The GTX has the fastest largest commercial GPU constructed –consisting of 681 million transistors which cover a 480mm2 die surface area and built on a 90 nm process.



The GT contains a single slot cooler, enabling it to use less power than its predecessor, GTS because of its 65 nm process. The GT also outclasses the GTS in terms of features –including the PureVideo HD VP2 engine. This graphics card uses seven of the eight clusters of 16 stream processors. Its architectural enhancements outclass those of the GTX; however, as a result of its narrower 256 bit memory bus, the GPU performance is a bit more restrained than that of the GTX. The 8800 GT has gone through rejuvenation and will now sport the 9800 GT label. With the name change, comes a more efficient chip –once the current line of G92 chips have depleted, the GT will be equipped with a 55 nm chip.

The GTX has 128 stream processors that have been clocked at 1.35 GHz. It also contains a core clock of 575 MHz and 768 MB of a 384 bit GDDR3 memory. This means that the GTX has a bandwidth of 86.4 GB/s. This card also supports HDCP (High Bandwidth Digital Content Protection); however, it also contains an older version of the NVIDIA PureVideo processor, therefore uses more CPU resources.

Summary:
1. The GT contains 128 stream processors and a 256 bit GDDR3 memory; the GTX has 128 stream processors and a 384 bit GDDR3 memory.
2. The GT contains a single slot cooler; the GTX has a double slot cooler.

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