GeForce 8800 GTS (G92) vs Radeon HD 5670

Intro

Compare all that to the Radeon HD 5670, which comes with clock speeds of 775 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 RAM. It features 400(80x5) SPUs as well as 20 Texture Address Units and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670		61 Watts
GeForce 8800 GTS (G92)		135 Watts
	Difference: 74 Watts (121%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5670 is 3% quicker than the GeForce 8800 GTS (G92) in general, because of its greater data rate. (explain)

Radeon HD 5670		64000 MB/sec
GeForce 8800 GTS (G92)		62080 MB/sec
	Difference: 1920 (3%)

Texel Rate

The GeForce 8800 GTS (G92) should be quite a bit (about 168%) better at AF than the Radeon HD 5670. (explain)

GeForce 8800 GTS (G92)		41600 Mtexels/sec
Radeon HD 5670		15500 Mtexels/sec
	Difference: 26100 (168%)

Pixel Rate

The GeForce 8800 GTS (G92) should be quite a bit (about 68%) more effective at FSAA than the Radeon HD 5670, and should be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce 8800 GTS (G92)		10400 Mpixels/sec
Radeon HD 5670		6200 Mpixels/sec
	Difference: 4200 (68%)

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

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of information (counted in megabytes per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the interface width by the speed of its memory. In the case of DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better 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 texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.