GeForce GTX 570 vs Radeon HD 7990

Intro

Compare that to the Radeon HD 7990, which comes with a core clock frequency of 950 MHz and a GDDR5 memory speed of 1500 MHz. It also makes use of a 384-bit memory bus, and makes use of a 28 nm design. It features 2048 SPUs, 128 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 7990		15520 points
GeForce GTX 570		4387 points
	Difference: 11133 (254%)

Ethereum Mining Hash Rate

Radeon HD 7990		32 Mh/s
GeForce GTX 570		13 Mh/s
	Difference: 19 (146%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 570		219 Watts
Radeon HD 7990		375 Watts
	Difference: 156 Watts (71%)

Memory Bandwidth

The Radeon HD 7990 should theoretically perform much faster than the GeForce GTX 570 in general. (explain)

Radeon HD 7990		576000 MB/sec
GeForce GTX 570		152000 MB/sec
	Difference: 424000 (279%)

Texel Rate

The Radeon HD 7990 should be quite a bit (approximately 454%) faster with regards to AF than the GeForce GTX 570. (explain)

Radeon HD 7990		243200 Mtexels/sec
GeForce GTX 570		43920 Mtexels/sec
	Difference: 199280 (454%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 7990 is a better choice, by far. (explain)

Radeon HD 7990		60800 Mpixels/sec
GeForce GTX 570		29280 Mpixels/sec
	Difference: 31520 (108%)

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 data (counted in megabytes per second) that can be moved across the external memory interface in one second. The number is worked out by multiplying the bus width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster 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 in one second. This is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.