GeForce GTX 950 vs Radeon HD 6950 2GB

Intro

Compare those specs to the Radeon HD 6950 2GB, which comes with core speeds of 800 MHz on the GPU, and 1250 MHz on the 2048 MB of GDDR5 RAM. It features 1408 SPUs as well as 88 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 950		90 Watts
Radeon HD 6950 2GB		200 Watts
	Difference: 110 Watts (122%)

Memory Bandwidth

In theory, the Radeon HD 6950 2GB is 51% quicker than the GeForce GTX 950 overall, due to its greater bandwidth. (explain)

Radeon HD 6950 2GB		160000 MB/sec
GeForce GTX 950		105728 MB/sec
	Difference: 54272 (51%)

Texel Rate

The Radeon HD 6950 2GB is a lot (approximately 43%) faster with regards to anisotropic filtering than the GeForce GTX 950. (explain)

Radeon HD 6950 2GB		70400 Mtexels/sec
GeForce GTX 950		49152 Mtexels/sec
	Difference: 21248 (43%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 950 is superior to the Radeon HD 6950 2GB, by far. (explain)

GeForce GTX 950		32768 Mpixels/sec
Radeon HD 6950 2GB		25600 Mpixels/sec
	Difference: 7168 (28%)

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 max amount of information (measured in MB per second) that can be moved 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. In the case of DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, 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 amount of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total number of texture units by the core clock 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 processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called 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 of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.