Radeon R9 M295X vs Radeon R9 M395X

Intro

Compare those specifications to the Radeon R9 M395X, which features a core clock speed of 723 MHz and a GDDR5 memory speed of 1250 MHz. It also features a 256-bit bus, and makes use of 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

Both cards have the same power consumption.

Memory Bandwidth

Theoretically speaking, the Radeon R9 M295X should perform just a bit faster than the Radeon R9 M395X in general. (explain)

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

Texel Rate

The Radeon R9 M295X should be a little bit (more or less 4%) more effective at 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%) faster with regards to AA than the Radeon R9 M395X, and also will be capable of handling higher 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: Bandwidth is the max amount of information (counted in MB per second) that can be transferred over the external memory interface within a second. The number is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. 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 amount of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total number of texture units by the core speed of the chip. The better 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 maximum amount of pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.