GeForce GTX 570 vs Radeon HD 6990

Intro

Compare those specs to the Radeon HD 6990, which has a GPU core clock speed of 830 MHz, and 2048 MB of GDDR5 RAM running at 1250 MHz through a 256-bit bus. It also is comprised of 1536 Stream Processors, 96 Texture Address Units, and 32 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon HD 6990		5820 points
GeForce GTX 570		4387 points
	Difference: 1433 (33%)

Ethereum Mining Hash Rate

Radeon HD 6990		24 Mh/s
GeForce GTX 570		13 Mh/s
	Difference: 11 (85%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 570		219 Watts
Radeon HD 6990		375 Watts
	Difference: 156 Watts (71%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6990 should theoretically be a lot superior to the GeForce GTX 570 overall. (explain)

Radeon HD 6990		320000 MB/sec
GeForce GTX 570		152000 MB/sec
	Difference: 168000 (111%)

Texel Rate

The Radeon HD 6990 is much (about 263%) better at texture filtering than the GeForce GTX 570. (explain)

Radeon HD 6990		159360 Mtexels/sec
GeForce GTX 570		43920 Mtexels/sec
	Difference: 115440 (263%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 6990 is the winner, and very much so. (explain)

Radeon HD 6990		53120 Mpixels/sec
GeForce GTX 570		29280 Mpixels/sec
	Difference: 23840 (81%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the max amount of information (counted in MB per second) that can be moved over the external memory interface in a second. The number is calculated by multiplying the interface width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This is calculated 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 graphics 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 maximum amount of pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.