GeForce 8800 GT 256MB vs Radeon HD 6570 (OEM) 1GB

Intro

Compare those specs to the Radeon HD 6570 (OEM) 1GB, which uses a 40 nm design. AMD has set the core frequency at 650 MHz. The GDDR3 memory works at a frequency of 900 MHz on this specific model. It features 480 SPUs as well as 24 Texture Address Units and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6570 (OEM) 1GB		50 Watts
GeForce 8800 GT 256MB		105 Watts
	Difference: 55 Watts (110%)

Memory Bandwidth

Theoretically speaking, the GeForce 8800 GT 256MB should be much faster than the Radeon HD 6570 (OEM) 1GB in general. (explain)

GeForce 8800 GT 256MB		44800 MB/sec
Radeon HD 6570 (OEM) 1GB		28800 MB/sec
	Difference: 16000 (56%)

Texel Rate

The GeForce 8800 GT 256MB will be much (about 115%) more effective at anisotropic filtering than the Radeon HD 6570 (OEM) 1GB. (explain)

GeForce 8800 GT 256MB		33600 Mtexels/sec
Radeon HD 6570 (OEM) 1GB		15600 Mtexels/sec
	Difference: 18000 (115%)

Pixel Rate

The GeForce 8800 GT 256MB is much (more or less 85%) more effective at anti-aliasing than the Radeon HD 6570 (OEM) 1GB, and capable of handling higher resolutions without slowing down too much. (explain)

GeForce 8800 GT 256MB		9600 Mpixels/sec
Radeon HD 6570 (OEM) 1GB		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: Bandwidth is the max amount of information (in units of MB per second) that can be transported over the external memory interface within a second. It's calculated by multiplying the interface width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 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 high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.