Radeon HD 6950 vs Radeon R9 M295X

Intro

Compare those specs to the Radeon R9 M295X, which features core clock speeds of 750 MHz on the GPU, and 1375 MHz on the 4096 MB of GDDR5 memory. It features 2048 SPUs along with 128 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M295X		125 Watts
Radeon HD 6950		200 Watts
	Difference: 75 Watts (60%)

Memory Bandwidth

In theory, the Radeon R9 M295X should be a small bit faster than the Radeon HD 6950 overall. (explain)

Radeon R9 M295X		176000 MB/sec
Radeon HD 6950		160000 MB/sec
	Difference: 16000 (10%)

Texel Rate

The Radeon R9 M295X will be quite a bit (more or less 36%) faster with regards to AF than the Radeon HD 6950. (explain)

Radeon R9 M295X		96000 Mtexels/sec
Radeon HD 6950		70400 Mtexels/sec
	Difference: 25600 (36%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon HD 6950 is superior to the Radeon R9 M295X, but only just. (explain)

Radeon HD 6950		25600 Mpixels/sec
Radeon R9 M295X		24000 Mpixels/sec
	Difference: 1600 (7%)

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 data (measured in megabytes per second) that can be transferred over the external memory interface in one second. It is worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better 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 applied in one second. This is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to the local memory per 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 - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.