GeForce 8800 GTS (G80) 640MB vs Radeon HD 6750 1GB

Intro

The GeForce 8800 GTS (G80) 640MB makes use of a 90 nm design. nVidia has clocked the core frequency at 513 MHz. The GDDR3 memory works at a speed of 792 MHz on this specific card. It features 96 SPUs along with 48 Texture Address Units and 20 Rasterization Operator Units.

Compare those specifications to the Radeon HD 6750 1GB, which comes with a core clock speed of 725 MHz and a GDDR5 memory speed of 1000 MHz. It also uses a 128-bit bus, and uses a 40 nm design. It is comprised of 720 SPUs, 36 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 (G80) 640MB Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Radeon HD 6750 1GB Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Specifications

Model	GeForce 8800 GTS (G80) 640MB	Radeon HD 6750 1GB
Manufacturer	nVidia	ATi
Year	Nov 2006 (640)	January 2011
Code Name	G80	Juniper Pro
Fab Process	90 nm	40 nm
Bus	PCIe x16	PCIe x16
Memory	640 MB	1024 MB
Core Speed	513 MHz	725 MHz
Shader Speed	1188 MHz	(N/A) MHz
Memory Speed	792 MHz	1000 MHz
Unified Shaders	96	720
Texture Mapping Units	48	36
Render Output Units	20	16
Bus Type	GDDR3	GDDR5
Bus Width	320-bit	128-bit
DirectX Version	DirectX 10	DirectX 11
OpenGL Version	OpenGL 3.0	OpenGL 4.1
Power (Max TDP)	143 watts	86 watts
Shader Model	4.0	5.0
Bandwidth	63360 MB/sec	64000 MB/sec
Texel Rate	24624 Mtexels/sec	26100 Mtexels/sec
Pixel Rate	10260 Mpixels/sec	11600 Mpixels/sec

Memory Bandwidth: Bandwidth is the largest amount of data (measured in megabytes per second) that can be transported over the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.