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GeForce 8800 GTS (G80) 320MB vs Radeon R5 M255

Intro

The GeForce 8800 GTS (G80) 320MB uses a 90 nm design. nVidia has set the core speed at 513 MHz. The GDDR3 RAM works at a speed of 792 MHz on this card. It features 96 SPUs as well as 48 Texture Address Units and 20 Rasterization Operator Units.

Compare those specs to the Radeon R5 M255, which comes with clock speeds of 940 MHz on the GPU, and 1000 MHz on the 2048 MB of DDR3 memory. It features 320 SPUs as well as 20 TAUs and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the GeForce 8800 GTS (G80) 320MB should theoretically be a lot superior to the Radeon R5 M255 overall. (explain)

GeForce 8800 GTS (G80) 320MB 63360 MB/sec
Radeon R5 M255 16000 MB/sec
Difference: 47360 (296%)

Texel Rate

The GeForce 8800 GTS (G80) 320MB should be a lot (approximately 31%) more effective at AF than the Radeon R5 M255. (explain)

GeForce 8800 GTS (G80) 320MB 24624 Mtexels/sec
Radeon R5 M255 18800 Mtexels/sec
Difference: 5824 (31%)

Pixel Rate

The GeForce 8800 GTS (G80) 320MB is much (more or less 36%) faster with regards to anti-aliasing than the Radeon R5 M255, and should be capable of handling higher resolutions while still performing well. (explain)

GeForce 8800 GTS (G80) 320MB 10260 Mpixels/sec
Radeon R5 M255 7520 Mpixels/sec
Difference: 2740 (36%)

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

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Radeon R5 M255

Amazon.com

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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 R5 M255
Manufacturer nVidia AMD
Year Feb 2007 June 2014
Code Name G80 Jet Pro
Memory 320 MB 2048 MB
Core Speed 513 MHz 940 MHz
Memory Speed 1584 MHz 2000 MHz
Power (Max TDP) 143 watts (Unknown) watts
Bandwidth 63360 MB/sec 16000 MB/sec
Texel Rate 24624 Mtexels/sec 18800 Mtexels/sec
Pixel Rate 10260 Mpixels/sec 7520 Mpixels/sec
Unified Shaders 96 320
Texture Mapping Units 48 20
Render Output Units 20 8
Bus Type GDDR3 DDR3
Bus Width 320-bit 64-bit
Fab Process 90 nm 28 nm
Transistors 681 million (Unknown) million
Bus PCIe x16 PCIe 3.0 x8
DirectX Version DirectX 10 DirectX 11.2
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Bandwidth is the max amount of data (counted in MB per second) that can be transported past the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, 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 number of texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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GeForce 8800 GTS (G80) 320MB

Amazon.com

Check prices at:

Radeon R5 M255

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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