Compare any two graphics cards:
Nvidia Titan X vs Radeon R9 295X2
IntroThe Nvidia Titan X comes with a GPU core speed of 1417 MHz, and the 12288 MB of GDDR5X RAM is set to run at 1251 MHz through a 384-bit bus. It also is made up of 3584 Stream Processors, 224 Texture Address Units, and 96 Raster Operation Units.
Compare all that to the Radeon R9 295X2, which comes with a clock frequency of 1018 MHz and a GDDR5 memory frequency of 1250 MHz. It also features a 512-bit memory bus, and uses a 28 nm design. It is comprised of 2816 SPUs, 176 TAUs, and 64 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
In theory, the Radeon R9 295X2 will be 30% faster than the Nvidia Titan X in general, due to its greater data rate. (explain)
Texel RateThe Radeon R9 295X2 will be a small bit (about 13%) more effective at anisotropic filtering than the Nvidia Titan X. (explain)
Pixel RateIf running with a high screen resolution is important to you, then the Nvidia Titan X is superior to the Radeon R9 295X2, but it probably won't make a huge difference. (explain)
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.
One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.
Nvidia Titan X
Radeon R9 295X2
Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of megabytes per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the video 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 amount of pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.
Nvidia Titan X
Radeon R9 295X2