GeForce 8800 GTS (G92) vs Radeon HD 4850 X2 512MB

Intro

The GeForce 8800 GTS (G92) comes with a core clock speed of 650 MHz and a GDDR3 memory frequency of 970 MHz. It also uses a 256-bit bus, and makes use of a 65 nm design. It is comprised of 128 SPUs, 64 Texture Address Units, and 16 Raster Operation Units.

Compare all of that to the Radeon HD 4850 X2 512MB, which comes with GPU core speed of 625 MHz, and 512 MB of GDDR3 memory set to run at 993 MHz through a 256-bit bus. It also is comprised of 800(160x5) Stream Processors, 40 TAUs, and 16 Raster Operation Units.

Price Comparison

Please note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.

GeForce 8800 GTS (G92) Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Radeon HD 4850 X2 512MB Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Specifications

Model	GeForce 8800 GTS (G92)	Radeon HD 4850 X2 512MB
Manufacturer	nVidia	ATi
Year	Dec 2007	Nov 7, 2008
Code Name	G92	R700
Fab Process	65 nm	55 nm
Bus	PCIe x16 2.0	PCIe 2.0 x16 (PCIe bridge)
Memory	512 MB	512 MB (x2)
Core Speed	650 MHz	625 MHz (x2)
Shader Speed	1625 MHz	(N/A) MHz (x2)
Memory Speed	970 MHz	993 MHz (x2)
Unified Shaders	128	800(160x5) (x2)
Texture Mapping Units	64	40 (x2)
Render Output Units	16	16 (x2)
Bus Type	GDDR3	GDDR3
Bus Width	256-bit	256-bit (x2)
DirectX Version	DirectX 10	DirectX 10.1
OpenGL Version	OpenGL 3.0	OpenGL 3.0
Power (Max TDP)	135 watts	250 watts
Shader Model	4.0	4.1
Bandwidth	62080 MB/sec	127104 MB/sec
Texel Rate	41600 Mtexels/sec	50000 Mtexels/sec
Pixel Rate	10400 Mpixels/sec	20000 Mpixels/sec

Memory Bandwidth: Bandwidth is the maximum amount of data (measured in megabytes per second) that can be transported past the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.