GeForce GTX Titan Black vs Radeon R9 390 8G

Intro

Compare those specs to the Radeon R9 390 8G, which comes with GPU core speed of 1000 MHz, and 8192 MB of GDDR5 RAM running at 1500 MHz through a 512-bit bus. It also is comprised of 2560 Stream Processors, 160 TAUs, and 64 Raster Operation 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

Radeon R9 390 8G		12733 points
GeForce GTX Titan Black		11666 points
	Difference: 1067 (9%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

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

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

Texel Rate

The GeForce GTX Titan Black is much (approximately 33%) more effective at AF than the Radeon R9 390 8G. (explain)

GeForce GTX Titan Black		213360 Mtexels/sec
Radeon R9 390 8G		160000 Mtexels/sec
	Difference: 53360 (33%)

Pixel Rate

The Radeon R9 390 8G is much (approximately 50%) better at FSAA than the GeForce GTX Titan Black, and also capable of handling higher resolutions without slowing down too much. (explain)

Radeon R9 390 8G		64000 Mpixels/sec
GeForce GTX Titan Black		42672 Mpixels/sec
	Difference: 21328 (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 largest amount of information (in units of megabytes per second) that can be moved across the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 texture map elements (texels) that are processed per second. This number is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of 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.