Radeon HD 3850 X2 vs Radeon R9 M375X

Intro

Compare those specifications to the Radeon R9 M375X, which has a GPU core clock speed of 1015 MHz, and 4096 MB of GDDR5 memory running at 1125 MHz through a 128-bit bus. It also features 640 SPUs, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the Radeon HD 3850 X2 should perform a lot faster than the Radeon R9 M375X in general. (explain)

Radeon HD 3850 X2		105984 MB/sec
Radeon R9 M375X		72000 MB/sec
	Difference: 33984 (47%)

Texel Rate

The Radeon R9 M375X is quite a bit (approximately 90%) faster with regards to AF than the Radeon HD 3850 X2. (explain)

Radeon R9 M375X		40600 Mtexels/sec
Radeon HD 3850 X2		21376 Mtexels/sec
	Difference: 19224 (90%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 3850 X2 is superior to the Radeon R9 M375X, by far. (explain)

Radeon HD 3850 X2		21376 Mpixels/sec
Radeon R9 M375X		16240 Mpixels/sec
	Difference: 5136 (32%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the maximum amount of data (counted in megabytes per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the interface width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, 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 most pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.