GeForce GTX Titan X vs Radeon R9 M295X

Intro

Compare those specs to the Radeon R9 M295X, which uses a 28 nm design. AMD has set the core frequency at 750 MHz. The GDDR5 memory runs at a speed of 1375 MHz on this specific model. It features 2048 SPUs as well as 128 Texture Address Units 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

Theoretically speaking, the GeForce GTX Titan X should be 91% quicker than the Radeon R9 M295X overall, because of its higher data rate. (explain)

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

Texel Rate

The GeForce GTX Titan X is a lot (about 100%) more effective at anisotropic 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

The GeForce GTX Titan X is quite a bit (approximately 300%) better at anti-aliasing than the Radeon R9 M295X, and capable of handling higher resolutions while still performing well. (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 information (counted in megabytes per second) that can be transported over the external memory interface in a second. It's worked out by multiplying the bus width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better 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 number of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.