GeForce GTX 570 vs Radeon HD 4770

Intro

Compare those specifications to the Radeon HD 4770, which features core speeds of 750 MHz on the GPU, and 800 MHz on the 512 MB of GDDR5 memory. It features 640(128x5) SPUs as well as 32 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4770		80 Watts
GeForce GTX 570		219 Watts
	Difference: 139 Watts (174%)

Memory Bandwidth

The GeForce GTX 570, in theory, should be quite a bit faster than the Radeon HD 4770 overall. (explain)

GeForce GTX 570		152000 MB/sec
Radeon HD 4770		51200 MB/sec
	Difference: 100800 (197%)

Texel Rate

The GeForce GTX 570 will be quite a bit (approximately 83%) better at anisotropic filtering than the Radeon HD 4770. (explain)

GeForce GTX 570		43920 Mtexels/sec
Radeon HD 4770		24000 Mtexels/sec
	Difference: 19920 (83%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 570 is superior to the Radeon HD 4770, by far. (explain)

GeForce GTX 570		29280 Mpixels/sec
Radeon HD 4770		12000 Mpixels/sec
	Difference: 17280 (144%)

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 (in units of MB per second) that can be moved over the external memory interface in one second. The number is calculated by multiplying the interface width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This is calculated by multiplying the total texture units by the core speed of the chip. The higher this number, the better the 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 most pixels the graphics card could possibly write to the local memory in one 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 - also called 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 bandwidth is, the lower the ability to reach the max fill rate.