GeForce GTX Titan vs Radeon R9 M395X

Intro

Compare that to the Radeon R9 M395X, which uses a 28 nm design. AMD has clocked the core frequency at 723 MHz. The GDDR5 RAM runs at a frequency of 1250 MHz on this particular model. It features 2048 SPUs as well as 128 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M395X		125 Watts
GeForce GTX Titan		250 Watts
	Difference: 125 Watts (100%)

Memory Bandwidth

As far as performance goes, the GeForce GTX Titan should theoretically be a lot better than the Radeon R9 M395X in general. (explain)

GeForce GTX Titan		288384 MB/sec
Radeon R9 M395X		160000 MB/sec
	Difference: 128384 (80%)

Texel Rate

The GeForce GTX Titan is much (more or less 103%) faster with regards to anisotropic filtering than the Radeon R9 M395X. (explain)

GeForce GTX Titan		187488 Mtexels/sec
Radeon R9 M395X		92544 Mtexels/sec
	Difference: 94944 (103%)

Pixel Rate

The GeForce GTX Titan will be a lot (more or less 74%) more effective at full screen anti-aliasing than the Radeon R9 M395X, and will be capable of handling higher resolutions while still performing well. (explain)

GeForce GTX Titan		40176 Mpixels/sec
Radeon R9 M395X		23136 Mpixels/sec
	Difference: 17040 (74%)

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 information (counted in MB per second) that can be moved past the external memory interface within a second. It is worked out by multiplying the interface width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen 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 this number, the better the graphics 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 amount of pixels the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units 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 fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.