GeForce GTX Titan X vs Radeon R9 390X 8G

Intro

Compare those specifications to the Radeon R9 390X 8G, which comes with GPU clock speed of 1050 MHz, and 8192 MB of GDDR5 memory running at 1500 MHz through a 512-bit bus. It also is comprised of 2816 SPUs, 176 TAUs, and 64 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX Titan X		17879 points
Radeon R9 390X 8G		13555 points
	Difference: 4324 (32%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX Titan X		250 Watts
Radeon R9 390X 8G		275 Watts
	Difference: 25 Watts (10%)

Memory Bandwidth

The Radeon R9 390X 8G, in theory, should be a small bit faster than the GeForce GTX Titan X overall. (explain)

Radeon R9 390X 8G		384000 MB/sec
GeForce GTX Titan X		336000 MB/sec
	Difference: 48000 (14%)

Texel Rate

The GeForce GTX Titan X should be just a bit (approximately 4%) better at AF than the Radeon R9 390X 8G. (explain)

GeForce GTX Titan X		192000 Mtexels/sec
Radeon R9 390X 8G		184800 Mtexels/sec
	Difference: 7200 (4%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX Titan X is superior to the Radeon R9 390X 8G, by a large margin. (explain)

GeForce GTX Titan X		96000 Mpixels/sec
Radeon R9 390X 8G		67200 Mpixels/sec
	Difference: 28800 (43%)

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 largest amount of information (in units of megabytes per second) that can be moved past the external memory interface within a second. It's worked out by multiplying the bus width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the 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 most pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.