GeForce GTX 560 vs Radeon HD 6790

Intro

Compare those specifications to the Radeon HD 6790, which has 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 made up of 800 SPUs, 40 TAUs, 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 560		3030 points
Radeon HD 6790		2150 points
	Difference: 880 (41%)

Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

The Radeon HD 6790 should theoretically perform a small bit faster than the GeForce GTX 560 in general. (explain)

Radeon HD 6790		134400 MB/sec
GeForce GTX 560		128128 MB/sec
	Difference: 6272 (5%)

Texel Rate

The GeForce GTX 560 should be much (approximately 35%) better at texture filtering than the Radeon HD 6790. (explain)

GeForce GTX 560		45360 Mtexels/sec
Radeon HD 6790		33600 Mtexels/sec
	Difference: 11760 (35%)

Pixel Rate

The GeForce GTX 560 should be quite a bit (about 93%) faster with regards to AA than the Radeon HD 6790, and also capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 560		25920 Mpixels/sec
Radeon HD 6790		13440 Mpixels/sec
	Difference: 12480 (93%)

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: Memory bandwidth is the largest amount of information (counted in megabytes per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the interface width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. 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 number of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.