Radeon R9 270X vs Radeon R9 M395X

Intro

Compare all of that to the Radeon R9 M395X, which features GPU clock speed of 723 MHz, and 4096 MB of GDDR5 RAM running at 1250 MHz through a 256-bit bus. It also features 2048 SPUs, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M395X		125 Watts
Radeon R9 270X		180 Watts
	Difference: 55 Watts (44%)

Memory Bandwidth

Performance-wise, the Radeon R9 270X should theoretically be a bit better than the Radeon R9 M395X in general. (explain)

Radeon R9 270X		179200 MB/sec
Radeon R9 M395X		160000 MB/sec
	Difference: 19200 (12%)

Texel Rate

The Radeon R9 M395X will be a little bit (about 16%) better at anisotropic filtering than the Radeon R9 270X. (explain)

Radeon R9 M395X		92544 Mtexels/sec
Radeon R9 270X		80000 Mtexels/sec
	Difference: 12544 (16%)

Pixel Rate

The Radeon R9 270X should be a lot (more or less 38%) better at AA than the Radeon R9 M395X, and should be capable of handling higher screen resolutions while still performing well. (explain)

Radeon R9 270X		32000 Mpixels/sec
Radeon R9 M395X		23136 Mpixels/sec
	Difference: 8864 (38%)

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 largest amount of information (measured in megabytes per second) that can be transported across the external memory interface in one second. It is worked out by multiplying the interface width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the video 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 maximum amount of pixels that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. 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.