Radeon R9 M270X vs Radeon R9 M295X

Intro

Compare those specs to the Radeon R9 M295X, which makes use of a 28 nm design. AMD has set the core speed at 750 MHz. The GDDR5 memory is set to run at a speed of 1375 MHz on this card. It features 2048 SPUs along with 128 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 M295X, in theory, should perform quite a bit faster than the Radeon R9 M270X overall. (explain)

Radeon R9 M295X		176000 MB/sec
Radeon R9 M270X		72000 MB/sec
	Difference: 104000 (144%)

Texel Rate

The Radeon R9 M295X is quite a bit (approximately 231%) better at texture filtering than the Radeon R9 M270X. (explain)

Radeon R9 M295X		96000 Mtexels/sec
Radeon R9 M270X		29000 Mtexels/sec
	Difference: 67000 (231%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R9 M295X is superior to the Radeon R9 M270X, by a large margin. (explain)

Radeon R9 M295X		24000 Mpixels/sec
Radeon R9 M270X		11600 Mpixels/sec
	Difference: 12400 (107%)

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 max amount of information (counted in megabytes per second) that can be transferred past the external memory interface in one second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the 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 applied in one second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the 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 maximum number of pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.