Radeon R9 M280X vs Radeon R9 M375X

Intro

Compare those specs to the Radeon R9 M375X, which makes use of a 28 nm design. AMD has clocked the core speed at 1015 MHz. The GDDR5 RAM runs at a speed of 1125 MHz on this specific model. It features 640 SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 M280X should in theory perform much faster than the Radeon R9 M375X overall. (explain)

Radeon R9 M280X		88000 MB/sec
Radeon R9 M375X		72000 MB/sec
	Difference: 16000 (22%)

Texel Rate

The Radeon R9 M280X should be quite a bit (approximately 24%) better at AF than the Radeon R9 M375X. (explain)

Radeon R9 M280X		50400 Mtexels/sec
Radeon R9 M375X		40600 Mtexels/sec
	Difference: 9800 (24%)

Pixel Rate

The Radeon R9 M375X should be a bit (about 13%) faster with regards to anti-aliasing than the Radeon R9 M280X, and also will be capable of handling higher resolutions while still performing well. (explain)

Radeon R9 M375X		16240 Mpixels/sec
Radeon R9 M280X		14400 Mpixels/sec
	Difference: 1840 (13%)

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 data (measured in megabytes per second) that can be moved across the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher 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 can be processed per second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the core speed of the card. 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 fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.