Radeon R9 390X 8G vs Radeon R9 M375X

Intro

Compare all that to the Radeon R9 M375X, which has core 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 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R9 390X 8G is 433% quicker than the Radeon R9 M375X overall, due to its higher data rate. (explain)

Radeon R9 390X 8G		384000 MB/sec
Radeon R9 M375X		72000 MB/sec
	Difference: 312000 (433%)

Texel Rate

The Radeon R9 390X 8G should be a lot (approximately 355%) better at anisotropic filtering than the Radeon R9 M375X. (explain)

Radeon R9 390X 8G		184800 Mtexels/sec
Radeon R9 M375X		40600 Mtexels/sec
	Difference: 144200 (355%)

Pixel Rate

The Radeon R9 390X 8G is a lot (approximately 314%) more effective at AA than the Radeon R9 M375X, and capable of handling higher resolutions while still performing well. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
Radeon R9 M375X		16240 Mpixels/sec
	Difference: 50960 (314%)

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 maximum amount of information (measured in MB per second) that can be transported over the external memory interface in a second. It's worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per 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 number is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. 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 quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.