GeForce GTX 950 vs Radeon HD 6950 2GB

Intro

Compare those specs to the Radeon HD 6950 2GB, which has clock 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 Texture Address Units and 32 Rasterization Operator Units.

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

Theoretically speaking, the Radeon HD 6950 2GB should perform a lot faster than the GeForce GTX 950 in general. (explain)

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

Texel Rate

The Radeon HD 6950 2GB should be quite a bit (about 43%) better at AF than the GeForce GTX 950. (explain)

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

Pixel Rate

The GeForce GTX 950 will be a lot (about 28%) more effective at FSAA than the Radeon HD 6950 2GB, and capable of handling higher screen resolutions without slowing down too much. (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 (counted in megabytes per second) that can be moved across the external memory interface in one second. It is worked out by multiplying the interface width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, 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 number of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total texture units of the card by the core 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 applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record 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 clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.