GeForce 8800 GTX vs Radeon HD 6570 (OEM) 2GB

Intro

Compare those specs to the Radeon HD 6570 (OEM) 2GB, which makes use of a 40 nm design. AMD has set the core frequency at 650 MHz. The GDDR5 memory runs at a frequency of 1000 MHz on this card. It features 480 SPUs as well as 24 TAUs and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6570 (OEM) 2GB		50 Watts
GeForce 8800 GTX		155 Watts
	Difference: 105 Watts (210%)

Memory Bandwidth

Theoretically speaking, the GeForce 8800 GTX should be 35% quicker than the Radeon HD 6570 (OEM) 2GB overall, because of its greater bandwidth. (explain)

GeForce 8800 GTX		86400 MB/sec
Radeon HD 6570 (OEM) 2GB		64000 MB/sec
	Difference: 22400 (35%)

Texel Rate

The GeForce 8800 GTX should be quite a bit (approximately 136%) more effective at anisotropic filtering than the Radeon HD 6570 (OEM) 2GB. (explain)

GeForce 8800 GTX		36800 Mtexels/sec
Radeon HD 6570 (OEM) 2GB		15600 Mtexels/sec
	Difference: 21200 (136%)

Pixel Rate

The GeForce 8800 GTX is much (about 165%) better at full screen anti-aliasing than the Radeon HD 6570 (OEM) 2GB, and will be capable of handling higher resolutions while still performing well. (explain)

GeForce 8800 GTX		13800 Mpixels/sec
Radeon HD 6570 (OEM) 2GB		5200 Mpixels/sec
	Difference: 8600 (165%)

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 data (counted in MB per second) that can be moved past the external memory interface in one second. The number is calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the card's clock speed. 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 many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.