Geforce GTX 680 vs Radeon HD 6790

Intro

Compare those specs to the Radeon HD 6790, which comes with GPU clock speed of 840 MHz, and 1024 MB of GDDR5 memory set to run at 1050 MHz through a 256-bit bus. It also features 800 SPUs, 40 TAUs, and 16 Raster Operation 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

In theory, the Geforce GTX 680 will be 43% quicker than the Radeon HD 6790 overall, because of its higher data rate. (explain)

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

Texel Rate

The Geforce GTX 680 is quite a bit (about 283%) better at texture filtering 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 high levels of AA is important to you, then the Geforce GTX 680 is a better choice, by a large margin. (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: Bandwidth is the max amount of information (in units of megabytes per second) that can be transported across the external memory interface in a second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This is calculated by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core speed of the card. 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 reach the maximum fill rate.