GeForce GTX Titan vs Radeon R9 M295X

Intro

Compare those specs to the Radeon R9 M295X, which uses a 28 nm design. AMD has clocked the core frequency at 750 MHz. The GDDR5 RAM runs at a frequency of 1375 MHz on this model. It features 2048 SPUs as well as 128 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M295X		125 Watts
GeForce GTX Titan		250 Watts
	Difference: 125 Watts (100%)

Memory Bandwidth

Theoretically, the GeForce GTX Titan should perform quite a bit faster than the Radeon R9 M295X in general. (explain)

GeForce GTX Titan		288384 MB/sec
Radeon R9 M295X		176000 MB/sec
	Difference: 112384 (64%)

Texel Rate

The GeForce GTX Titan will be much (approximately 95%) better at AF than the Radeon R9 M295X. (explain)

GeForce GTX Titan		187488 Mtexels/sec
Radeon R9 M295X		96000 Mtexels/sec
	Difference: 91488 (95%)

Pixel Rate

The GeForce GTX Titan will be much (approximately 67%) faster with regards to FSAA than the Radeon R9 M295X, and should be capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX Titan		40176 Mpixels/sec
Radeon R9 M295X		24000 Mpixels/sec
	Difference: 16176 (67%)

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 max amount of data (measured in megabytes per second) that can be transported past the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory speed. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster 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 per second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.