Radeon HD 5850 vs Radeon R9 M375X

Intro

Compare those specs to the Radeon R9 M375X, which comes with a core clock speed of 1015 MHz and a GDDR5 memory speed of 1125 MHz. It also makes use of a 128-bit memory bus, and makes use of a 28 nm design. It is comprised of 640 SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 5850 will be 78% faster than the Radeon R9 M375X overall, due to its greater bandwidth. (explain)

Radeon HD 5850		128000 MB/sec
Radeon R9 M375X		72000 MB/sec
	Difference: 56000 (78%)

Texel Rate

The Radeon HD 5850 should be much (approximately 29%) better at AF than the Radeon R9 M375X. (explain)

Radeon HD 5850		52200 Mtexels/sec
Radeon R9 M375X		40600 Mtexels/sec
	Difference: 11600 (29%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 5850 is a better choice, and very much so. (explain)

Radeon HD 5850		23200 Mpixels/sec
Radeon R9 M375X		16240 Mpixels/sec
	Difference: 6960 (43%)

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 transported past the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR 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 calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics 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 the video card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.