Radeon R9 M265X vs Radeon R9 M395X

Intro

Compare all that to the Radeon R9 M395X, which comes with a core clock speed of 723 MHz and a GDDR5 memory speed of 1250 MHz. It also features a 256-bit memory bus, and uses a 28 nm design. It is comprised of 2048 SPUs, 128 TAUs, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the Radeon R9 M395X should theoretically be much better than the Radeon R9 M265X overall. (explain)

Radeon R9 M395X		160000 MB/sec
Radeon R9 M265X		72000 MB/sec
	Difference: 88000 (122%)

Texel Rate

The Radeon R9 M395X should be quite a bit (about 302%) better at anisotropic filtering than the Radeon R9 M265X. (explain)

Radeon R9 M395X		92544 Mtexels/sec
Radeon R9 M265X		23000 Mtexels/sec
	Difference: 69544 (302%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 M395X is superior to the Radeon R9 M265X, by a large margin. (explain)

Radeon R9 M395X		23136 Mpixels/sec
Radeon R9 M265X		9200 Mpixels/sec
	Difference: 13936 (151%)

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 (measured in MB per second) that can be moved past the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This number 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 one 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 ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.