GeForce GTX Titan Black vs Radeon R9 390X 8G

Intro

Compare those specs to the Radeon R9 390X 8G, which comes with a GPU core clock speed of 1050 MHz, and 8192 MB of GDDR5 RAM set to run at 1500 MHz through a 512-bit bus. It also is made up of 2816 Stream Processors, 176 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 390X 8G		13555 points
GeForce GTX Titan Black		11666 points
	Difference: 1889 (16%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

As far as performance goes, the Radeon R9 390X 8G should in theory be a small bit better than the GeForce GTX Titan Black overall. (explain)

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

Texel Rate

The GeForce GTX Titan Black should be just a bit (approximately 15%) better at AF than the Radeon R9 390X 8G. (explain)

GeForce GTX Titan Black		213360 Mtexels/sec
Radeon R9 390X 8G		184800 Mtexels/sec
	Difference: 28560 (15%)

Pixel Rate

The Radeon R9 390X 8G is quite a bit (more or less 57%) better at AA than the GeForce GTX Titan Black, and will be able to handle higher resolutions without losing too much performance. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
GeForce GTX Titan Black		42672 Mpixels/sec
	Difference: 24528 (57%)

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 transported across the external memory interface in one second. The number is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total texture units by the core speed of the chip. The better this number, the better the 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 chip could possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.