Radeon R9 M290X vs Radeon R9 M380

Intro

Compare those specs to the Radeon R9 M380, which uses a 28 nm design. AMD has set the core speed at 1000 MHz. The GDDR5 RAM runs at a speed of 1500 MHz on this specific model. It features 640 SPUs as well as 40 TAUs and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R9 M290X is 60% quicker than the Radeon R9 M380 in general, due to its higher data rate. (explain)

Radeon R9 M290X		153600 MB/sec
Radeon R9 M380		96000 MB/sec
	Difference: 57600 (60%)

Texel Rate

The Radeon R9 M290X should be a lot (about 70%) faster with regards to AF than the Radeon R9 M380. (explain)

Radeon R9 M290X		68000 Mtexels/sec
Radeon R9 M380		40000 Mtexels/sec
	Difference: 28000 (70%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon R9 M290X is superior to the Radeon R9 M380, by far. (explain)

Radeon R9 M290X		27200 Mpixels/sec
Radeon R9 M380		16000 Mpixels/sec
	Difference: 11200 (70%)

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 (in units of megabytes per second) that can be transported past the external memory interface in one second. The number is calculated by multiplying the bus width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.