GeForce GTX Titan X vs Radeon R9 390X 8G

Intro

Compare those specs to the Radeon R9 390X 8G, which has core clock speeds of 1050 MHz on the GPU, and 1500 MHz on the 8192 MB of GDDR5 memory. It features 2816 SPUs as well as 176 TAUs and 64 Rasterization Operator Units.

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 should theoretically perform a 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 is a little bit (about 4%) more effective 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

The GeForce GTX Titan X is much (approximately 43%) better at anti-aliasing than the Radeon R9 390X 8G, and will be able to handle higher screen resolutions while still performing well. (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: Memory bandwidth is the largest amount of information (in units of megabytes per second) that can be transported over the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This is calculated 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 video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels the video 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 ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.