Geforce GTX 680 vs Radeon HD 7950

Intro

Compare all that to the Radeon HD 7950, which comes with a clock frequency of 800 MHz and a GDDR5 memory frequency of 1250 MHz. It also uses a 384-bit memory bus, and uses a 28 nm design. It is made up of 1792 SPUs, 112 TAUs, and 32 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

Radeon HD 7950		7731 points
Geforce GTX 680		7650 points
	Difference: 81 (1%)

Ethereum Mining Hash Rate

Radeon HD 7950		21 Mh/s
Geforce GTX 680		16 Mh/s
	Difference: 5 (31%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 680		195 Watts
Radeon HD 7950		200 Watts
	Difference: 5 Watts (3%)

Memory Bandwidth

The Radeon HD 7950, in theory, should perform quite a bit faster than the Geforce GTX 680 overall. (explain)

Radeon HD 7950		240000 MB/sec
Geforce GTX 680		192256 MB/sec
	Difference: 47744 (25%)

Texel Rate

The Geforce GTX 680 will be much (about 44%) more effective at AF than the Radeon HD 7950. (explain)

Geforce GTX 680		128768 Mtexels/sec
Radeon HD 7950		89600 Mtexels/sec
	Difference: 39168 (44%)

Pixel Rate

The Geforce GTX 680 will be a lot (approximately 26%) more effective at anti-aliasing than the Radeon HD 7950, and able to handle higher resolutions without losing too much performance. (explain)

Geforce GTX 680		32192 Mpixels/sec
Radeon HD 7950		25600 Mpixels/sec
	Difference: 6592 (26%)

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 (counted in megabytes per second) that can be transferred past the external memory interface in a second. It's worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR type memory, it 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 anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the core 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 is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.