Compare any two graphics cards:
Nvidia Titan X vs Radeon R9 290
IntroThe Nvidia Titan X features a clock frequency of 1417 MHz and a GDDR5X memory frequency of 1251 MHz. It also features a 384-bit memory bus, and makes use of a 16 nm design. It is made up of 3584 SPUs, 224 Texture Address Units, and 96 ROPs.
Compare all of that to the Radeon R9 290, which has GPU clock speed of 800 MHz, and 4096 MB of GDDR5 memory set to run at 1250 MHz through a 512-bit bus. It also is made up of 2560 SPUs, 160 Texture Address Units, and 64 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
In theory, the Nvidia Titan X is 54% faster than the Radeon R9 290 overall, due to its higher bandwidth. (explain)
Texel RateThe Nvidia Titan X is a lot (more or less 148%) better at anisotropic filtering than the Radeon R9 290. (explain)
Pixel RateThe Nvidia Titan X should be much (more or less 166%) better at full screen anti-aliasing than the Radeon R9 290, and able to handle higher resolutions more effectively. (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.
Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.
Memory Bandwidth: Memory bandwidth is the max amount of data (measured in megabytes per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the interface width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, 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 texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.
Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to its local memory per 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 - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.