GeForce GTX Titan X vs Radeon R7 250X 2GB

Intro

Compare those specifications to the Radeon R7 250X 2GB, which comes with a clock frequency of 1000 MHz and a GDDR5 memory frequency of 1125 MHz. It also uses a 128-bit bus, and makes use of a 28 nm design. It features 640 SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X 2GB		95 Watts
GeForce GTX Titan X		250 Watts
	Difference: 155 Watts (163%)

Memory Bandwidth

In theory, the GeForce GTX Titan X will be 367% quicker than the Radeon R7 250X 2GB overall, because of its higher bandwidth. (explain)

GeForce GTX Titan X		336000 MB/sec
Radeon R7 250X 2GB		72000 MB/sec
	Difference: 264000 (367%)

Texel Rate

The GeForce GTX Titan X should be a lot (about 380%) more effective at AF than the Radeon R7 250X 2GB. (explain)

GeForce GTX Titan X		192000 Mtexels/sec
Radeon R7 250X 2GB		40000 Mtexels/sec
	Difference: 152000 (380%)

Pixel Rate

The GeForce GTX Titan X will be quite a bit (about 500%) better at FSAA than the Radeon R7 250X 2GB, and should be able to handle higher screen resolutions more effectively. (explain)

GeForce GTX Titan X		96000 Mpixels/sec
Radeon R7 250X 2GB		16000 Mpixels/sec
	Difference: 80000 (500%)

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 largest amount of information (in units of megabytes per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.