GeForce GTX 965M vs Radeon R9 M295X

Intro

Compare those specs to the Radeon R9 M295X, which comes with a GPU core clock speed of 750 MHz, and 4096 MB of GDDR5 RAM running at 1375 MHz through a 256-bit bus. It also features 2048 SPUs, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 965M		60 Watts
Radeon R9 M295X		125 Watts
	Difference: 65 Watts (108%)

Memory Bandwidth

The Radeon R9 M295X, in theory, should be much faster than the GeForce GTX 965M in general. (explain)

Radeon R9 M295X		176000 MB/sec
GeForce GTX 965M		64000 MB/sec
	Difference: 112000 (175%)

Texel Rate

The Radeon R9 M295X will be a lot (more or less 59%) faster with regards to AF than the GeForce GTX 965M. (explain)

Radeon R9 M295X		96000 Mtexels/sec
GeForce GTX 965M		60416 Mtexels/sec
	Difference: 35584 (59%)

Pixel Rate

The GeForce GTX 965M will be a lot (more or less 26%) more effective at anti-aliasing than the Radeon R9 M295X, and also will be able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 965M		30208 Mpixels/sec
Radeon R9 M295X		24000 Mpixels/sec
	Difference: 6208 (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: Memory bandwidth is the maximum amount of information (measured in MB per second) that can be transferred past the external memory interface within a second. The number is worked out by multiplying the interface width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. 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 high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total texture units by the core speed of the chip. The higher this number, the better the video card will be at 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 chip can possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. 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.