Radeon HD 6950 2GB vs Radeon R9 M375

Intro

Compare all of that to the Radeon R9 M375, which has core clock speeds of 1015 MHz on the GPU, and 1100 MHz on the 4096 MB of DDR3 memory. It features 640 SPUs along with 40 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 6950 2GB should theoretically perform a lot faster than the Radeon R9 M375 in general. (explain)

Radeon HD 6950 2GB		160000 MB/sec
Radeon R9 M375		35200 MB/sec
	Difference: 124800 (355%)

Texel Rate

The Radeon HD 6950 2GB will be much (about 73%) more effective at anisotropic filtering than the Radeon R9 M375. (explain)

Radeon HD 6950 2GB		70400 Mtexels/sec
Radeon R9 M375		40600 Mtexels/sec
	Difference: 29800 (73%)

Pixel Rate

The Radeon HD 6950 2GB will be a lot (about 58%) more effective at AA than the Radeon R9 M375, and also should be able to handle higher resolutions without losing too much performance. (explain)

Radeon HD 6950 2GB		25600 Mpixels/sec
Radeon R9 M375		16240 Mpixels/sec
	Difference: 9360 (58%)

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 data (in units of megabytes per second) that can be transported over the external memory interface in a second. The number is worked out by multiplying the bus width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This number is worked out by multiplying the total amount of texture units by the core clock 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 the video card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.