Radeon R9 M295X vs Radeon R9 M375

Intro

Compare all that to the Radeon R9 M375, which has a core clock speed of 1015 MHz and a DDR3 memory frequency of 1100 MHz. It also uses a 128-bit memory bus, and makes use of a 28 nm design. It features 640 SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R9 M295X will be 400% quicker than the Radeon R9 M375 overall, due to its greater data rate. (explain)

Radeon R9 M295X		176000 MB/sec
Radeon R9 M375		35200 MB/sec
	Difference: 140800 (400%)

Texel Rate

The Radeon R9 M295X will be a lot (about 136%) better at texture filtering than the Radeon R9 M375. (explain)

Radeon R9 M295X		96000 Mtexels/sec
Radeon R9 M375		40600 Mtexels/sec
	Difference: 55400 (136%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R9 M295X is superior to the Radeon R9 M375, by a large margin. (explain)

Radeon R9 M295X		24000 Mpixels/sec
Radeon R9 M375		16240 Mpixels/sec
	Difference: 7760 (48%)

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 largest amount of information (counted in MB per second) that can be moved across the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.