Geforce GTX 680 vs Radeon HD 6790

Intro

Compare those specifications to the Radeon HD 6790, which has core clock speeds of 840 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 RAM. It features 800 SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

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 680		7650 points
Radeon HD 6790		2150 points
	Difference: 5500 (256%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6790		150 Watts
Geforce GTX 680		195 Watts
	Difference: 45 Watts (30%)

Memory Bandwidth

The Geforce GTX 680 should in theory perform quite a bit faster than the Radeon HD 6790 overall. (explain)

Geforce GTX 680		192256 MB/sec
Radeon HD 6790		134400 MB/sec
	Difference: 57856 (43%)

Texel Rate

The Geforce GTX 680 will be quite a bit (about 283%) better at AF than the Radeon HD 6790. (explain)

Geforce GTX 680		128768 Mtexels/sec
Radeon HD 6790		33600 Mtexels/sec
	Difference: 95168 (283%)

Pixel Rate

If using a high resolution is important to you, then the Geforce GTX 680 is a better choice, and very much so. (explain)

Geforce GTX 680		32192 Mpixels/sec
Radeon HD 6790		13440 Mpixels/sec
	Difference: 18752 (140%)

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 maximum amount of information (measured in megabytes per second) that can be transported across the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one 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 better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.