GeForce GTX 965M vs Radeon R9 M270X

Intro

Compare all that to the Radeon R9 M270X, which comes with core speeds of 725 MHz on the GPU, and 1125 MHz on the 2048 MB of GDDR5 memory. It features 640 SPUs as well as 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 M270X should in theory be a little bit faster than the GeForce GTX 965M in general. (explain)

Radeon R9 M270X		72000 MB/sec
GeForce GTX 965M		64000 MB/sec
	Difference: 8000 (13%)

Texel Rate

The GeForce GTX 965M is quite a bit (about 108%) better at anisotropic filtering than the Radeon R9 M270X. (explain)

GeForce GTX 965M		60416 Mtexels/sec
Radeon R9 M270X		29000 Mtexels/sec
	Difference: 31416 (108%)

Pixel Rate

The GeForce GTX 965M should be a lot (approximately 160%) faster with regards to FSAA than the Radeon R9 M270X, and capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 965M		30208 Mpixels/sec
Radeon R9 M270X		11600 Mpixels/sec
	Difference: 18608 (160%)

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 megabytes per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, 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 are processed in one second. This figure is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units 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 also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.