GeForce GTX Titan X vs Radeon R9 390 8G

Intro

Compare all that to the Radeon R9 390 8G, which makes use of a 28 nm design. AMD has set the core frequency at 1000 MHz. The GDDR5 memory works at a speed of 1500 MHz on this card. It features 2560 SPUs as well as 160 TAUs 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

The Radeon R9 390 8G should theoretically be just a bit faster than the GeForce GTX Titan X overall. (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 is a small bit (approximately 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 is quite a bit (about 50%) better at FSAA than the Radeon R9 390 8G, and should be capable of handling higher screen resolutions while still performing well. (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: Bandwidth is the max amount of information (in units of megabytes per second) that can be transferred past the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.