GeForce GTX Titan X vs Radeon R9 M295X

Intro

Compare those specifications to the Radeon R9 M295X, which features a core clock speed of 750 MHz and a GDDR5 memory frequency of 1375 MHz. It also features a 256-bit bus, and uses a 28 nm design. It is made up of 2048 SPUs, 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 X		250 Watts
	Difference: 125 Watts (100%)

Memory Bandwidth

Performance-wise, the GeForce GTX Titan X should in theory be quite a bit better than the Radeon R9 M295X overall. (explain)

GeForce GTX Titan X		336000 MB/sec
Radeon R9 M295X		176000 MB/sec
	Difference: 160000 (91%)

Texel Rate

The GeForce GTX Titan X should be a lot (about 100%) better at texture filtering than the Radeon R9 M295X. (explain)

GeForce GTX Titan X		192000 Mtexels/sec
Radeon R9 M295X		96000 Mtexels/sec
	Difference: 96000 (100%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX Titan X is a better choice, and very much so. (explain)

GeForce GTX Titan X		96000 Mpixels/sec
Radeon R9 M295X		24000 Mpixels/sec
	Difference: 72000 (300%)

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 over the external memory interface within a second. It is calculated by multiplying the bus width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen 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 better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

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