Radeon R9 380X vs Radeon R9 M270X

Intro

Compare that to the Radeon R9 M270X, which makes use of a 28 nm design. AMD has clocked the core frequency at 725 MHz. The GDDR5 memory is set to run at a speed of 1125 MHz on this specific card. It features 640 SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R9 380X should be quite a bit faster than the Radeon R9 M270X overall. (explain)

Radeon R9 380X		182400 MB/sec
Radeon R9 M270X		72000 MB/sec
	Difference: 110400 (153%)

Texel Rate

The Radeon R9 380X should be quite a bit (approximately 328%) better at texture filtering than the Radeon R9 M270X. (explain)

Radeon R9 380X		124160 Mtexels/sec
Radeon R9 M270X		29000 Mtexels/sec
	Difference: 95160 (328%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R9 380X is superior to the Radeon R9 M270X, by a large margin. (explain)

Radeon R9 380X		31040 Mpixels/sec
Radeon R9 M270X		11600 Mpixels/sec
	Difference: 19440 (168%)

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 (counted in MB per second) that can be transferred across the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.