Radeon R9 M270X vs Radeon R9 M280X

Intro

Compare all of that to the Radeon R9 M280X, which features a core clock speed of 900 MHz and a GDDR5 memory speed of 1375 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It is made up of 896 SPUs, 56 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the Radeon R9 M280X should perform much faster than the Radeon R9 M270X in general. (explain)

Radeon R9 M280X		88000 MB/sec
Radeon R9 M270X		72000 MB/sec
	Difference: 16000 (22%)

Texel Rate

The Radeon R9 M280X should be much (approximately 74%) better at anisotropic filtering than the Radeon R9 M270X. (explain)

Radeon R9 M280X		50400 Mtexels/sec
Radeon R9 M270X		29000 Mtexels/sec
	Difference: 21400 (74%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 M280X is a better choice, and very much so. (explain)

Radeon R9 M280X		14400 Mpixels/sec
Radeon R9 M270X		11600 Mpixels/sec
	Difference: 2800 (24%)

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 information (measured in megabytes per second) that can be transported across the external memory interface within a second. It is calculated 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 higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.