GeForce 8800 GTS (G92) vs Radeon HD 5670

Intro

Compare those specifications to the Radeon HD 5670, which comes with a core clock speed of 775 MHz and a GDDR5 memory frequency of 1000 MHz. It also makes use of a 128-bit bus, and makes use of a 40 nm design. It is made up of 400(80x5) SPUs, 20 TAUs, and 8 ROPs.

(No game benchmarks for this combination yet.)

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

Performance-wise, the Radeon HD 5670 should theoretically be a bit better than the GeForce 8800 GTS (G92) overall. (explain)

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

Texel Rate

The GeForce 8800 GTS (G92) is quite a bit (more or less 168%) more effective at anisotropic filtering than the Radeon HD 5670. (explain)

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

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce 8800 GTS (G92) is superior to the Radeon HD 5670, by far. (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 max amount of data (counted in MB per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the 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 amount of texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.