Radeon R9 M295X vs Radeon R9 M395X

Intro

Compare those specifications to the Radeon R9 M395X, which makes use of a 28 nm design. AMD has set the core frequency at 723 MHz. The GDDR5 memory works at a speed of 1250 MHz on this particular card. It features 2048 SPUs along with 128 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

The Radeon R9 M295X, in theory, should perform a little bit faster than the Radeon R9 M395X overall. (explain)

Radeon R9 M295X		176000 MB/sec
Radeon R9 M395X		160000 MB/sec
	Difference: 16000 (10%)

Texel Rate

The Radeon R9 M295X is a little bit (more or less 4%) faster with regards to texture filtering than the Radeon R9 M395X. (explain)

Radeon R9 M295X		96000 Mtexels/sec
Radeon R9 M395X		92544 Mtexels/sec
	Difference: 3456 (4%)

Pixel Rate

The Radeon R9 M295X is a bit (approximately 4%) more effective at anti-aliasing than the Radeon R9 M395X, and will be able to handle higher screen resolutions better. (explain)

Radeon R9 M295X		24000 Mpixels/sec
Radeon R9 M395X		23136 Mpixels/sec
	Difference: 864 (4%)

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 data (in units of megabytes per second) that can be transferred over the external memory interface in one second. It is calculated by multiplying the interface width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, 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 per second. This is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

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