Radeon R7 260X vs Radeon R9 M295X

Intro

Compare all that to the Radeon R9 M295X, which features a core clock speed of 750 MHz and a GDDR5 memory speed of 1375 MHz. It also makes use of a 256-bit memory bus, and uses a 28 nm design. It is made up of 2048 SPUs, 128 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 260X		115 Watts
Radeon R9 M295X		125 Watts
	Difference: 10 Watts (9%)

Memory Bandwidth

The Radeon R9 M295X should theoretically be much faster than the Radeon R7 260X overall. (explain)

Radeon R9 M295X		176000 MB/sec
Radeon R7 260X		104000 MB/sec
	Difference: 72000 (69%)

Texel Rate

The Radeon R9 M295X is much (approximately 56%) faster with regards to texture filtering than the Radeon R7 260X. (explain)

Radeon R9 M295X		96000 Mtexels/sec
Radeon R7 260X		61600 Mtexels/sec
	Difference: 34400 (56%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 M295X is superior to the Radeon R7 260X, by a large margin. (explain)

Radeon R9 M295X		24000 Mpixels/sec
Radeon R7 260X		17600 Mpixels/sec
	Difference: 6400 (36%)

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 (measured in MB per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the bus width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

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