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GeForce 8800 GS vs Radeon HD 6970

Intro

The GeForce 8800 GS uses a 65 nm design. nVidia has set the core speed at 550 MHz. The GDDR3 RAM runs at a frequency of 800 MHz on this model. It features 96 SPUs as well as 48 TAUs and 12 Rasterization Operator Units.

Compare all that to the Radeon HD 6970, which comes with a GPU core clock speed of 880 MHz, and 2048 MB of GDDR5 RAM running at 1375 MHz through a 256-bit bus. It also is comprised of 1536 SPUs, 96 Texture Address Units, and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GS 105 Watts
Radeon HD 6970 250 Watts
Difference: 145 Watts (138%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6970 should perform much faster than the GeForce 8800 GS overall. (explain)

Radeon HD 6970 176000 MB/sec
GeForce 8800 GS 38400 MB/sec
Difference: 137600 (358%)

Texel Rate

The Radeon HD 6970 will be much (about 220%) faster with regards to anisotropic filtering than the GeForce 8800 GS. (explain)

Radeon HD 6970 84480 Mtexels/sec
GeForce 8800 GS 26400 Mtexels/sec
Difference: 58080 (220%)

Pixel Rate

The Radeon HD 6970 should be much (approximately 327%) faster with regards to AA than the GeForce 8800 GS, and also able to handle higher screen resolutions while still performing well. (explain)

Radeon HD 6970 28160 Mpixels/sec
GeForce 8800 GS 6600 Mpixels/sec
Difference: 21560 (327%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

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GeForce 8800 GS

Amazon.com

Check prices at:

Radeon HD 6970

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce 8800 GS Radeon HD 6970
Manufacturer nVidia AMD
Year Jan 2008 December 2010
Code Name G92 Cayman XT
Memory 384 MB 2048 MB
Core Speed 550 MHz 880 MHz
Memory Speed 1600 MHz 5500 MHz
Power (Max TDP) 105 watts 250 watts
Bandwidth 38400 MB/sec 176000 MB/sec
Texel Rate 26400 Mtexels/sec 84480 Mtexels/sec
Pixel Rate 6600 Mpixels/sec 28160 Mpixels/sec
Unified Shaders 96 1536
Texture Mapping Units 48 96
Render Output Units 12 32
Bus Type GDDR3 GDDR5
Bus Width 192-bit 256-bit
Fab Process 65 nm 40 nm
Transistors 754 million 2640 million
Bus PCIe x16 2.0 PCIe x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the maximum amount of data (counted in megabytes per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels 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 number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many 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.

Display Prices

Hide Prices

GeForce 8800 GS

Amazon.com

Check prices at:

Radeon HD 6970

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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