Geforce GTX 670 vs Radeon HD 7950

Intro

Compare those specs to the Radeon HD 7950, which uses a 28 nm design. AMD has set the core frequency at 800 MHz. The GDDR5 memory is set to run at a speed of 1250 MHz on this particular card. It features 1792 SPUs as well as 112 Texture Address Units and 32 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

Radeon HD 7950		7731 points
Geforce GTX 670		7351 points
	Difference: 380 (5%)

Ethereum Mining Hash Rate

Radeon HD 7950		21 Mh/s
Geforce GTX 670		13 Mh/s
	Difference: 8 (62%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 670		170 Watts
Radeon HD 7950		200 Watts
	Difference: 30 Watts (18%)

Memory Bandwidth

The Radeon HD 7950 should in theory perform quite a bit faster than the Geforce GTX 670 overall. (explain)

Radeon HD 7950		240000 MB/sec
Geforce GTX 670		192000 MB/sec
	Difference: 48000 (25%)

Texel Rate

The Geforce GTX 670 will be just a bit (more or less 14%) faster with regards to texture filtering than the Radeon HD 7950. (explain)

Geforce GTX 670		102480 Mtexels/sec
Radeon HD 7950		89600 Mtexels/sec
	Difference: 12880 (14%)

Pixel Rate

The Geforce GTX 670 is a bit (approximately 14%) more effective at anti-aliasing than the Radeon HD 7950, and will be capable of handling higher screen resolutions more effectively. (explain)

Geforce GTX 670		29280 Mpixels/sec
Radeon HD 7950		25600 Mpixels/sec
	Difference: 3680 (14%)

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 maximum amount of information (measured in megabytes per second) that can be moved over the external memory interface within a second. It's calculated by multiplying the card's interface width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 again. If 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per 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 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 amount of pixels that the graphics chip can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.