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GeForce 8800 GTS (G80) 320MB vs Radeon HD 7970

Intro

The GeForce 8800 GTS (G80) 320MB features a clock speed of 513 MHz and a GDDR3 memory speed of 792 MHz. It also features a 320-bit bus, and uses a 90 nm design. It is made up of 96 SPUs, 48 TAUs, and 20 Raster Operation Units.

Compare those specs to the Radeon HD 7970, which comes with a core clock frequency of 925 MHz and a GDDR5 memory speed of 1375 MHz. It also uses a 384-bit bus, and uses a 28 nm design. It is made up of 2048 SPUs, 128 TAUs, and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GTS (G80) 320MB 143 Watts
Radeon HD 7970 250 Watts
Difference: 107 Watts (75%)

Memory Bandwidth

The Radeon HD 7970 should theoretically be much faster than the GeForce 8800 GTS (G80) 320MB overall. (explain)

Radeon HD 7970 264000 MB/sec
GeForce 8800 GTS (G80) 320MB 63360 MB/sec
Difference: 200640 (317%)

Texel Rate

The Radeon HD 7970 will be quite a bit (approximately 381%) faster with regards to AF than the GeForce 8800 GTS (G80) 320MB. (explain)

Radeon HD 7970 118400 Mtexels/sec
GeForce 8800 GTS (G80) 320MB 24624 Mtexels/sec
Difference: 93776 (381%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 7970 is superior to the GeForce 8800 GTS (G80) 320MB, by far. (explain)

Radeon HD 7970 29600 Mpixels/sec
GeForce 8800 GTS (G80) 320MB 10260 Mpixels/sec
Difference: 19340 (188%)

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 GTS (G80) 320MB

Amazon.com

Check prices at:

Radeon HD 7970

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 GTS (G80) 320MB Radeon HD 7970
Manufacturer nVidia AMD
Year Feb 2007 January 2012
Code Name G80 Tahiti XT
Memory 320 MB 3072 MB
Core Speed 513 MHz 925 MHz
Memory Speed 1584 MHz 5500 MHz
Power (Max TDP) 143 watts 250 watts
Bandwidth 63360 MB/sec 264000 MB/sec
Texel Rate 24624 Mtexels/sec 118400 Mtexels/sec
Pixel Rate 10260 Mpixels/sec 29600 Mpixels/sec
Unified Shaders 96 2048
Texture Mapping Units 48 128
Render Output Units 20 32
Bus Type GDDR3 GDDR5
Bus Width 320-bit 384-bit
Fab Process 90 nm 28 nm
Transistors 681 million 4313 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.1
OpenGL Version OpenGL 3.0 OpenGL 4.2

Memory Bandwidth: Memory bandwidth is the max amount of information (measured in MB per second) that can be moved across the external memory interface within a second. The number is worked out by multiplying the bus width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This is worked out by multiplying the total number of texture units of the card by the core clock 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 in a second.

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

Display Prices

Hide Prices

GeForce 8800 GTS (G80) 320MB

Amazon.com

Check prices at:

Radeon HD 7970

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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