GeForce GTX 950M vs Radeon R9 M270X

Intro

Compare those specifications to the Radeon R9 M270X, which has a core clock frequency of 725 MHz and a GDDR5 memory frequency of 1125 MHz. It also features a 128-bit memory bus, and uses a 28 nm design. It is made up of 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon R9 M270X should theoretically be much better than the GeForce GTX 950M in general. (explain)

Radeon R9 M270X		72000 MB/sec
GeForce GTX 950M		32000 MB/sec
	Difference: 40000 (125%)

Texel Rate

The GeForce GTX 950M should be much (more or less 26%) faster with regards to texture filtering than the Radeon R9 M270X. (explain)

GeForce GTX 950M		36560 Mtexels/sec
Radeon R9 M270X		29000 Mtexels/sec
	Difference: 7560 (26%)

Pixel Rate

The GeForce GTX 950M will be quite a bit (approximately 26%) more effective at anti-aliasing than the Radeon R9 M270X, and able to handle higher resolutions without losing too much performance. (explain)

GeForce GTX 950M		14624 Mpixels/sec
Radeon R9 M270X		11600 Mpixels/sec
	Difference: 3024 (26%)

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 largest amount of data (counted in megabytes per second) that can be transferred past the external memory interface within a second. It's calculated by multiplying the bus width by the speed of its memory. In the case of DDR type memory, 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, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.