Geforce GTX 670 vs Radeon HD 6950

Intro

Compare all that to the Radeon HD 6950, which makes use of a 40 nm design. AMD has clocked the core frequency at 800 MHz. The GDDR5 RAM runs at a frequency of 1250 MHz on this particular model. It features 1408 SPUs as well as 88 TAUs and 32 Rasterization Operator Units.

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

Geforce GTX 670		7351 points
Radeon HD 6950		3240 points
	Difference: 4111 (127%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 670		170 Watts
Radeon HD 6950		200 Watts
	Difference: 30 Watts (18%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 670 will be 20% faster than the Radeon HD 6950 in general, due to its greater data rate. (explain)

Geforce GTX 670		192000 MB/sec
Radeon HD 6950		160000 MB/sec
	Difference: 32000 (20%)

Texel Rate

The Geforce GTX 670 should be much (approximately 46%) better at texture filtering than the Radeon HD 6950. (explain)

Geforce GTX 670		102480 Mtexels/sec
Radeon HD 6950		70400 Mtexels/sec
	Difference: 32080 (46%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Geforce GTX 670 is a better choice, but it probably won't make a huge difference. (explain)

Geforce GTX 670		29280 Mpixels/sec
Radeon HD 6950		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 max amount of information (measured in MB per second) that can be transferred across the external memory interface in a second. It's calculated by multiplying the interface width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's 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 can be applied per second. This figure is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.