Geforce GTX 670 vs Radeon HD 7950

Intro

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

Theoretically speaking, the Radeon HD 7950 should perform much 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 should be a little bit (approximately 14%) more effective at 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

If using lots of anti-aliasing is important to you, then the Geforce GTX 670 is superior to the Radeon HD 7950, but not by far. (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: Memory bandwidth is the maximum amount of data (in units of megabytes per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.