Radeon HD 6750 vs Radeon R9 M375

Intro

Compare those specs to the Radeon R9 M375, which features a clock frequency of 1015 MHz and a DDR3 memory frequency of 1100 MHz. It also makes use of a 128-bit bus, and makes use of a 28 nm design. It is made up of 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon HD 6750 will be 82% faster than the Radeon R9 M375 overall, because of its higher bandwidth. (explain)

Radeon HD 6750		64000 MB/sec
Radeon R9 M375		35200 MB/sec
	Difference: 28800 (82%)

Texel Rate

The Radeon R9 M375 will be much (about 56%) better at AF than the Radeon HD 6750. (explain)

Radeon R9 M375		40600 Mtexels/sec
Radeon HD 6750		26100 Mtexels/sec
	Difference: 14500 (56%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 M375 is superior to the Radeon HD 6750, by a large margin. (explain)

Radeon R9 M375		16240 Mpixels/sec
Radeon HD 6750		11600 Mpixels/sec
	Difference: 4640 (40%)

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 (in units of MB per second) that can be transported over the external memory interface in a second. It is worked out by multiplying the bus width by the speed of its memory. If it uses DDR RAM, 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 AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). 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 potential to reach the maximum fill rate.