GeForce GTX 560 vs Radeon HD 6790

Intro

Compare those specs to the Radeon HD 6790, which features a GPU core clock speed of 840 MHz, and 1024 MB of GDDR5 memory running at 1050 MHz through a 256-bit bus. It also is comprised 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

In theory, the Radeon HD 6790 should be just a 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 quite a bit (about 35%) faster with regards to 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 will be much (more or less 93%) better at anti-aliasing than the Radeon HD 6790, and also will be able to handle higher resolutions without losing too much performance. (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 max amount of information (measured in MB per second) that can be transported over the external memory interface in a second. It's worked out by multiplying the interface width by its memory speed. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better 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 are processed per second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.