GeForce GTX 460 vs Radeon HD 6790

Intro

Compare all of that to the Radeon HD 6790, which has a core clock speed of 840 MHz and a GDDR5 memory speed of 1050 MHz. It also features a 256-bit bus, and uses a 40 nm design. It features 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 460		2557 points
Radeon HD 6790		2150 points
	Difference: 407 (19%)

Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

Theoretically, the Radeon HD 6790 should perform quite a bit faster than the GeForce GTX 460 overall. (explain)

Radeon HD 6790		134400 MB/sec
GeForce GTX 460		86400 MB/sec
	Difference: 48000 (56%)

Texel Rate

The GeForce GTX 460 will be a little bit (more or less 13%) better at texture filtering than the Radeon HD 6790. (explain)

GeForce GTX 460		37800 Mtexels/sec
Radeon HD 6790		33600 Mtexels/sec
	Difference: 4200 (13%)

Pixel Rate

The GeForce GTX 460 will be much (more or less 21%) faster with regards to AA than the Radeon HD 6790, and also should be capable of handling higher resolutions better. (explain)

GeForce GTX 460		16200 Mpixels/sec
Radeon HD 6790		13440 Mpixels/sec
	Difference: 2760 (21%)

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 max amount of data (in units of MB per second) that can be transported across the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher 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 number of pixels the video card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the core clock speed. 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 lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.