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GeForce 8800 GTS (G80) 640MB vs Radeon HD 4730

Intro

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

Compare all of that to the Radeon HD 4730, which has core speeds of 700 MHz on the GPU, and 900 MHz on the 512 MB of GDDR5 memory. It features 640(128x5) SPUs along with 32 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4730 140 Watts
GeForce 8800 GTS (G80) 640MB 143 Watts
Difference: 3 Watts (2%)

Memory Bandwidth

Theoretically speaking, the GeForce 8800 GTS (G80) 640MB should perform just a bit faster than the Radeon HD 4730 overall. (explain)

GeForce 8800 GTS (G80) 640MB 63360 MB/sec
Radeon HD 4730 57600 MB/sec
Difference: 5760 (10%)

Texel Rate

The GeForce 8800 GTS (G80) 640MB will be a small bit (about 10%) more effective at texture filtering than the Radeon HD 4730. (explain)

GeForce 8800 GTS (G80) 640MB 24624 Mtexels/sec
Radeon HD 4730 22400 Mtexels/sec
Difference: 2224 (10%)

Pixel Rate

The GeForce 8800 GTS (G80) 640MB will be much (approximately 83%) better at full screen anti-aliasing than the Radeon HD 4730, and also will be able to handle higher screen resolutions better. (explain)

GeForce 8800 GTS (G80) 640MB 10260 Mpixels/sec
Radeon HD 4730 5600 Mpixels/sec
Difference: 4660 (83%)

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 HD 4730

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) 640MB Radeon HD 4730
Manufacturer nVidia AMD
Year Nov 2006 (640) Jun 8, 2009
Code Name G80 RV770/CE
Memory 640 MB 512 MB
Core Speed 513 MHz 700 MHz
Memory Speed 1584 MHz 3600 MHz
Power (Max TDP) 143 watts 140 watts
Bandwidth 63360 MB/sec 57600 MB/sec
Texel Rate 24624 Mtexels/sec 22400 Mtexels/sec
Pixel Rate 10260 Mpixels/sec 5600 Mpixels/sec
Unified Shaders 96 640(128x5)
Texture Mapping Units 48 32
Render Output Units 20 8
Bus Type GDDR3 GDDR5
Bus Width 320-bit 128-bit
Fab Process 90 nm 55 nm
Transistors 681 million 956 million
Bus PCIe x16 PCIe 2.0 x16
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the maximum amount of data (counted in MB per second) that can be transferred past the external memory interface in one second. It is calculated by multiplying the bus width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total number of 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 processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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GeForce 8800 GTS (G80) 640MB

Amazon.com

Check prices at:

Radeon HD 4730

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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