GeForce GTX 560 vs Radeon HD 6790

Intro

Compare all that to the Radeon HD 6790, which has a clock speed of 840 MHz and a GDDR5 memory frequency of 1050 MHz. It also features a 256-bit memory bus, and uses a 40 nm design. It is made up of 800 SPUs, 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 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, in theory, should be 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 is much (more or less 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 is much (about 93%) faster with regards to AA than the Radeon HD 6790, and also will be able to handle 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: Bandwidth is the maximum amount of information (measured in megabytes per second) that can be moved past the external memory interface in a second. It is calculated by multiplying the interface width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, 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 of the card by the core clock speed of the chip. The better the texel rate, the better the video card will be at 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 the graphics card 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 amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.