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GeForce 8800 GTS (G80) 640MB vs Radeon R7 250

Intro

The GeForce 8800 GTS (G80) 640MB has clock speeds of 513 MHz on the GPU, and 792 MHz on the 640 MB of GDDR3 memory. It features 96 SPUs as well as 48 Texture Address Units and 20 ROPs.

Compare that to the Radeon R7 250, which has clock speeds of 1000 MHz on the GPU, and 1150 MHz on the 1024 MB of GDDR5 memory. It features 384 SPUs as well as 24 TAUs and 8 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250 65 Watts
GeForce 8800 GTS (G80) 640MB 143 Watts
Difference: 78 Watts (120%)

Memory Bandwidth

Theoretically speaking, the Radeon R7 250 is 16% faster than the GeForce 8800 GTS (G80) 640MB in general, because of its greater bandwidth. (explain)

Radeon R7 250 73600 MB/sec
GeForce 8800 GTS (G80) 640MB 63360 MB/sec
Difference: 10240 (16%)

Texel Rate

The GeForce 8800 GTS (G80) 640MB should be a little bit (more or less 3%) more effective at texture filtering than the Radeon R7 250. (explain)

GeForce 8800 GTS (G80) 640MB 24624 Mtexels/sec
Radeon R7 250 24000 Mtexels/sec
Difference: 624 (3%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce 8800 GTS (G80) 640MB is a better choice, by a large margin. (explain)

GeForce 8800 GTS (G80) 640MB 10260 Mpixels/sec
Radeon R7 250 8000 Mpixels/sec
Difference: 2260 (28%)

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) 640MB

Amazon.com

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Radeon R7 250

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) 640MB Radeon R7 250
Manufacturer nVidia AMD
Year Nov 2006 (640) October 2013
Code Name G80 Oland XT
Memory 640 MB 1024 MB
Core Speed 513 MHz 1000 MHz
Memory Speed 1584 MHz 4600 MHz
Power (Max TDP) 143 watts 65 watts
Bandwidth 63360 MB/sec 73600 MB/sec
Texel Rate 24624 Mtexels/sec 24000 Mtexels/sec
Pixel Rate 10260 Mpixels/sec 8000 Mpixels/sec
Unified Shaders 96 384
Texture Mapping Units 48 24
Render Output Units 20 8
Bus Type GDDR3 GDDR5
Bus Width 320-bit 128-bit
Fab Process 90 nm 28 nm
Transistors 681 million 1040 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.2
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the maximum amount of information (in units of MB per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total texture units by the core clock 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 a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to its local memory in a 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 - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce 8800 GTS (G80) 640MB

Amazon.com

Check prices at:

Radeon R7 250

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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