GeForce GTX 570 vs Radeon HD 6790

Intro

Compare those specs to the Radeon HD 6790, which comes with GPU core speed of 840 MHz, and 1024 MB of GDDR5 RAM set to run at 1050 MHz through a 256-bit bus. It also is comprised of 800 Stream Processors, 40 Texture Address Units, and 16 Raster Operation Units.

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

GeForce GTX 570		4387 points
Radeon HD 6790		2150 points
	Difference: 2237 (104%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6790		150 Watts
GeForce GTX 570		219 Watts
	Difference: 69 Watts (46%)

Memory Bandwidth

Performance-wise, the GeForce GTX 570 should in theory be just a bit superior to the Radeon HD 6790 overall. (explain)

GeForce GTX 570		152000 MB/sec
Radeon HD 6790		134400 MB/sec
	Difference: 17600 (13%)

Texel Rate

The GeForce GTX 570 is much (more or less 31%) better at AF than the Radeon HD 6790. (explain)

GeForce GTX 570		43920 Mtexels/sec
Radeon HD 6790		33600 Mtexels/sec
	Difference: 10320 (31%)

Pixel Rate

The GeForce GTX 570 should be a lot (approximately 118%) better at AA than the Radeon HD 6790, and also will be capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GTX 570		29280 Mpixels/sec
Radeon HD 6790		13440 Mpixels/sec
	Difference: 15840 (118%)

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 maximum amount of information (counted in MB per second) that can be transported across the external memory interface in one second. The number is worked out by multiplying the interface width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.