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GeForce 8800 GTS (G80) 640MB vs Radeon HD 5830

Intro

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

Compare those specifications to the Radeon HD 5830, which has GPU clock speed of 800 MHz, and 1024 MB of GDDR5 memory running at 1000 MHz through a 256-bit bus. It also features 1120(224x5) Stream Processors, 56 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GTS (G80) 640MB 143 Watts
Radeon HD 5830 175 Watts
Difference: 32 Watts (22%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5830 is 102% faster than the GeForce 8800 GTS (G80) 640MB in general, due to its greater bandwidth. (explain)

Radeon HD 5830 128000 MB/sec
GeForce 8800 GTS (G80) 640MB 63360 MB/sec
Difference: 64640 (102%)

Texel Rate

The Radeon HD 5830 will be a lot (more or less 82%) more effective at AF than the GeForce 8800 GTS (G80) 640MB. (explain)

Radeon HD 5830 44800 Mtexels/sec
GeForce 8800 GTS (G80) 640MB 24624 Mtexels/sec
Difference: 20176 (82%)

Pixel Rate

The Radeon HD 5830 is a lot (approximately 25%) faster with regards to full screen anti-aliasing than the GeForce 8800 GTS (G80) 640MB, and will be able to handle higher resolutions while still performing well. (explain)

Radeon HD 5830 12800 Mpixels/sec
GeForce 8800 GTS (G80) 640MB 10260 Mpixels/sec
Difference: 2540 (25%)

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

Check prices at:

Radeon HD 5830

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 HD 5830
Manufacturer nVidia AMD
Year Nov 2006 (640) February 25, 2010
Code Name G80 Cypress LE
Memory 640 MB 1024 MB
Core Speed 513 MHz 800 MHz
Memory Speed 1584 MHz 4000 MHz
Power (Max TDP) 143 watts 175 watts
Bandwidth 63360 MB/sec 128000 MB/sec
Texel Rate 24624 Mtexels/sec 44800 Mtexels/sec
Pixel Rate 10260 Mpixels/sec 12800 Mpixels/sec
Unified Shaders 96 1120(224x5)
Texture Mapping Units 48 56
Render Output Units 20 16
Bus Type GDDR3 GDDR5
Bus Width 320-bit 256-bit
Fab Process 90 nm 40 nm
Transistors 681 million 2154 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 information (measured in megabytes per second) that can be transferred across the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better 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 in one second. This is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics 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 number of pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units 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 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 get to the max fill rate.

Display Prices

Hide Prices

GeForce 8800 GTS (G80) 640MB

Amazon.com

Check prices at:

Radeon HD 5830

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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