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GeForce 8800 GTX vs Radeon R7 250

Intro

The GeForce 8800 GTX comes with a GPU core clock speed of 575 MHz, and the 768 MB of GDDR3 memory is set to run at 900 MHz through a 384-bit bus. It also is made up of 128 SPUs, 64 TAUs, and 24 ROPs.

Compare that to the Radeon R7 250, which comes with clock speeds of 1000 MHz on the GPU, and 1150 MHz on the 1024 MB of GDDR5 RAM. It features 384 SPUs along with 24 TAUs and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250 65 Watts
GeForce 8800 GTX 155 Watts
Difference: 90 Watts (138%)

Memory Bandwidth

Theoretically speaking, the GeForce 8800 GTX should perform just a bit faster than the Radeon R7 250 overall. (explain)

GeForce 8800 GTX 86400 MB/sec
Radeon R7 250 73600 MB/sec
Difference: 12800 (17%)

Texel Rate

The GeForce 8800 GTX is much (more or less 53%) better at texture filtering than the Radeon R7 250. (explain)

GeForce 8800 GTX 36800 Mtexels/sec
Radeon R7 250 24000 Mtexels/sec
Difference: 12800 (53%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce 8800 GTX is the winner, by a large margin. (explain)

GeForce 8800 GTX 13800 Mpixels/sec
Radeon R7 250 8000 Mpixels/sec
Difference: 5800 (73%)

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 GTX

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.

Specifications

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Model GeForce 8800 GTX Radeon R7 250
Manufacturer nVidia AMD
Year Nov 2006 October 2013
Code Name G80 Oland XT
Memory 768 MB 1024 MB
Core Speed 575 MHz 1000 MHz
Memory Speed 1800 MHz 4600 MHz
Power (Max TDP) 155 watts 65 watts
Bandwidth 86400 MB/sec 73600 MB/sec
Texel Rate 36800 Mtexels/sec 24000 Mtexels/sec
Pixel Rate 13800 Mpixels/sec 8000 Mpixels/sec
Unified Shaders 128 384
Texture Mapping Units 64 24
Render Output Units 24 8
Bus Type GDDR3 GDDR5
Bus Width 384-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: Bandwidth is the max amount of data (in units of MB per second) that can be transported past the external memory interface in a second. The number is worked out by multiplying the bus width by its memory clock speed. If it uses DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the video 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 number of pixels the video card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the clock 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 many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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GeForce 8800 GTX

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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