GeForce GTX Titan Black vs Radeon R9 390X 8G

Intro

Compare all of that to the Radeon R9 390X 8G, which comes with a core clock speed of 1050 MHz and a GDDR5 memory frequency of 1500 MHz. It also uses a 512-bit memory bus, and uses a 28 nm design. It is made up of 2816 SPUs, 176 TAUs, 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 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

In theory, the Radeon R9 390X 8G should perform a little bit faster 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 will be a bit (more or less 15%) faster with regards to texture filtering 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

If running with a high screen resolution is important to you, then the Radeon R9 390X 8G is a better choice, by a large margin. (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 data (measured in MB per second) that can be moved over the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This is worked out by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.