GeForce GTX Titan X vs Radeon R9 390 8G

Intro

Compare those specs to the Radeon R9 390 8G, which has core speeds of 1000 MHz on the GPU, and 1500 MHz on the 8192 MB of GDDR5 memory. It features 2560 SPUs as well as 160 Texture Address Units and 64 Rasterization Operator Units.

Display Graphs

Hide Graphs

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 390 8G		12733 points
	Difference: 5146 (40%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

In theory, the Radeon R9 390 8G will be 14% quicker than the GeForce GTX Titan X in general, because of its higher bandwidth. (explain)

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

Texel Rate

The GeForce GTX Titan X will be a bit (more or less 20%) more effective at anisotropic filtering than the Radeon R9 390 8G. (explain)

GeForce GTX Titan X		192000 Mtexels/sec
Radeon R9 390 8G		160000 Mtexels/sec
	Difference: 32000 (20%)

Pixel Rate

The GeForce GTX Titan X should be much (more or less 50%) more effective at full screen anti-aliasing than the Radeon R9 390 8G, and will be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX Titan X		96000 Mpixels/sec
Radeon R9 390 8G		64000 Mpixels/sec
	Difference: 32000 (50%)

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 max amount of data (counted in megabytes per second) that can be transferred past the external memory interface in one second. It's worked out by multiplying the interface width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster 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 can be applied in one second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the core 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 - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.