GeForce 8800 GT 512MB vs Radeon HD 5570

Intro

Compare all of that to the Radeon HD 5570, which comes with a clock frequency of 650 MHz and a DDR3 memory frequency of 900 MHz. It also features a 128-bit bus, and uses a 40 nm design. It is comprised of 400(80x5) SPUs, 20 TAUs, and 8 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5570		43 Watts
GeForce 8800 GT 512MB		105 Watts
	Difference: 62 Watts (144%)

Memory Bandwidth

The GeForce 8800 GT 512MB should in theory be quite a bit faster than the Radeon HD 5570 overall. (explain)

GeForce 8800 GT 512MB		57600 MB/sec
Radeon HD 5570		28800 MB/sec
	Difference: 28800 (100%)

Texel Rate

The GeForce 8800 GT 512MB will be a lot (about 158%) more effective at anisotropic filtering than the Radeon HD 5570. (explain)

GeForce 8800 GT 512MB		33600 Mtexels/sec
Radeon HD 5570		13000 Mtexels/sec
	Difference: 20600 (158%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce 8800 GT 512MB is superior to the Radeon HD 5570, by far. (explain)

GeForce 8800 GT 512MB		9600 Mpixels/sec
Radeon HD 5570		5200 Mpixels/sec
	Difference: 4400 (85%)

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 information (in units of MB per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the interface width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. 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 is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.