Radeon HD 3850 1GB vs Radeon R9 M375X

Intro

Compare that to the Radeon R9 M375X, which comes with clock speeds of 1015 MHz on the GPU, and 1125 MHz on the 4096 MB of GDDR5 memory. It features 640 SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the Radeon R9 M375X should in theory be quite a bit better than the Radeon HD 3850 1GB in general. (explain)

Radeon R9 M375X		72000 MB/sec
Radeon HD 3850 1GB		52992 MB/sec
	Difference: 19008 (36%)

Texel Rate

The Radeon R9 M375X is quite a bit (approximately 280%) more effective at texture filtering than the Radeon HD 3850 1GB. (explain)

Radeon R9 M375X		40600 Mtexels/sec
Radeon HD 3850 1GB		10688 Mtexels/sec
	Difference: 29912 (280%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon R9 M375X is the winner, by a large margin. (explain)

Radeon R9 M375X		16240 Mpixels/sec
Radeon HD 3850 1GB		10688 Mpixels/sec
	Difference: 5552 (52%)

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 megabytes per second) that can be moved past the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster 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 applied in one second. This is worked out 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 card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.