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GeForce 8800 GTS (G80) 320MB vs Radeon HD 5750 512MB

Intro

The GeForce 8800 GTS (G80) 320MB features core clock speeds of 513 MHz on the GPU, and 792 MHz on the 320 MB of GDDR3 RAM. It features 96 SPUs as well as 48 TAUs and 20 ROPs.

Compare all that to the Radeon HD 5750 512MB, which uses a 40 nm design. AMD has set the core speed at 700 MHz. The GDDR5 RAM works at a speed of 1150 MHz on this particular model. It features 720(144x5) SPUs along with 36 TAUs and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 512MB 86 Watts
GeForce 8800 GTS (G80) 320MB 143 Watts
Difference: 57 Watts (66%)

Memory Bandwidth

Performance-wise, the Radeon HD 5750 512MB should in theory be a bit superior to the GeForce 8800 GTS (G80) 320MB in general. (explain)

Radeon HD 5750 512MB 73600 MB/sec
GeForce 8800 GTS (G80) 320MB 63360 MB/sec
Difference: 10240 (16%)

Texel Rate

The Radeon HD 5750 512MB should be just a bit (more or less 2%) more effective at AF than the GeForce 8800 GTS (G80) 320MB. (explain)

Radeon HD 5750 512MB 25200 Mtexels/sec
GeForce 8800 GTS (G80) 320MB 24624 Mtexels/sec
Difference: 576 (2%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 5750 512MB is superior to the GeForce 8800 GTS (G80) 320MB, though only just barely. (explain)

Radeon HD 5750 512MB 11200 Mpixels/sec
GeForce 8800 GTS (G80) 320MB 10260 Mpixels/sec
Difference: 940 (9%)

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 HD 5750 512MB

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 HD 5750 512MB
Manufacturer nVidia AMD
Year Feb 2007 October 13, 2009
Code Name G80 Juniper LE
Memory 320 MB 512 MB
Core Speed 513 MHz 700 MHz
Memory Speed 1584 MHz 4600 MHz
Power (Max TDP) 143 watts 86 watts
Bandwidth 63360 MB/sec 73600 MB/sec
Texel Rate 24624 Mtexels/sec 25200 Mtexels/sec
Pixel Rate 10260 Mpixels/sec 11200 Mpixels/sec
Unified Shaders 96 720(144x5)
Texture Mapping Units 48 36
Render Output Units 20 16
Bus Type GDDR3 GDDR5
Bus Width 320-bit 128-bit
Fab Process 90 nm 40 nm
Transistors 681 million 1040 million
Bus PCIe x16 PCIe 2.1 x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 3.2

Memory Bandwidth: Memory bandwidth is the max amount of data (counted in MB per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the interface width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card 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 clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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GeForce 8800 GTS (G80) 320MB

Amazon.com

Check prices at:

Radeon HD 5750 512MB

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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