GeForce GTX Titan Black vs Radeon R9 390 8G

Intro

Compare that to the Radeon R9 390 8G, which has a GPU core clock speed of 1000 MHz, and 8192 MB of GDDR5 memory set to run at 1500 MHz through a 512-bit bus. It also is made up of 2560 SPUs, 160 Texture Address Units, and 64 ROPs.

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

The Radeon R9 390 8G, in theory, should perform a little bit faster than the GeForce GTX Titan Black in general. (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 should be quite a bit (about 33%) faster with regards to texture filtering 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 a lot (approximately 50%) more effective at AA than the GeForce GTX Titan Black, and also able to handle higher resolutions better. (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: Memory bandwidth is the largest amount of information (measured in MB per second) that can be moved over the external memory interface within a second. It's calculated by multiplying the bus width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total texture units by the core clock 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 maximum amount of pixels that the graphics card 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 ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.