Radeon R9 M375X vs Radeon R9 M380

Intro

Compare all that to the Radeon R9 M380, which features a GPU core clock speed of 1000 MHz, and 4096 MB of GDDR5 RAM running at 1500 MHz through a 128-bit bus. It also features 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R9 M380 should perform a lot faster than the Radeon R9 M375X overall. (explain)

Radeon R9 M380		96000 MB/sec
Radeon R9 M375X		72000 MB/sec
	Difference: 24000 (33%)

Texel Rate

The Radeon R9 M375X should be a bit (approximately 2%) more effective at AF than the Radeon R9 M380. (explain)

Radeon R9 M375X		40600 Mtexels/sec
Radeon R9 M380		40000 Mtexels/sec
	Difference: 600 (2%)

Pixel Rate

The Radeon R9 M375X should be just a bit (about 2%) faster with regards to FSAA than the Radeon R9 M380, and also should be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon R9 M375X		16240 Mpixels/sec
Radeon R9 M380		16000 Mpixels/sec
	Difference: 240 (2%)

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: Bandwidth is the maximum amount of data (in units of MB per second) that can be moved over the external memory interface within a second. The number is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, 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 texture map elements (texels) that are processed per second. This number is calculated by multiplying the total number of texture units by the core 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 in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. 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 quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.