GeForce GTX 580 vs Radeon HD 6790

Intro

Compare those specifications to the Radeon HD 6790, which uses a 40 nm design. AMD has set the core speed at 840 MHz. The GDDR5 RAM runs at a speed of 1050 MHz on this specific model. It features 800 SPUs as well as 40 TAUs and 16 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

GeForce GTX 580		4956 points
Radeon HD 6790		2150 points
	Difference: 2806 (131%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6790		150 Watts
GeForce GTX 580		244 Watts
	Difference: 94 Watts (63%)

Memory Bandwidth

The GeForce GTX 580, in theory, should be much faster than the Radeon HD 6790 in general. (explain)

GeForce GTX 580		192384 MB/sec
Radeon HD 6790		134400 MB/sec
	Difference: 57984 (43%)

Texel Rate

The GeForce GTX 580 will be much (more or less 47%) faster with regards to anisotropic filtering than the Radeon HD 6790. (explain)

GeForce GTX 580		49408 Mtexels/sec
Radeon HD 6790		33600 Mtexels/sec
	Difference: 15808 (47%)

Pixel Rate

The GeForce GTX 580 is quite a bit (more or less 176%) better at AA than the Radeon HD 6790, and also will be capable of handling higher resolutions while still performing well. (explain)

GeForce GTX 580		37056 Mpixels/sec
Radeon HD 6790		13440 Mpixels/sec
	Difference: 23616 (176%)

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 largest amount of information (measured 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 the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, 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 amount of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the 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 most pixels the video card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.