Radeon R9 M295X vs Radeon R9 M395X

Intro

Compare all of that to the Radeon R9 M395X, which has 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 features 2048 SPUs, 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 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 is a small bit (approximately 4%) more effective at AF than the Radeon R9 M395X. (explain)

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

Pixel Rate

If running with a high resolution is important to you, then the Radeon R9 M295X is superior to the Radeon R9 M395X, though not by far. (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 maximum amount of data (counted in MB per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the bus width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster 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 number of texture map elements (texels) that are processed per second. This number is worked out by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the card's 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 of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.