GeForce GTX Titan vs Radeon R9 390 8G

Intro

Compare all of that to the Radeon R9 390 8G, which has core clock speeds of 1000 MHz on the GPU, and 1500 MHz on the 8192 MB of GDDR5 RAM. It features 2560 SPUs along with 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		10162 points
	Difference: 2571 (25%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

Theoretically speaking, the Radeon R9 390 8G is 33% quicker than the GeForce GTX Titan in general, because of its higher data rate. (explain)

Radeon R9 390 8G		384000 MB/sec
GeForce GTX Titan		288384 MB/sec
	Difference: 95616 (33%)

Texel Rate

The GeForce GTX Titan will be a small bit (more or less 17%) faster with regards to AF than the Radeon R9 390 8G. (explain)

GeForce GTX Titan		187488 Mtexels/sec
Radeon R9 390 8G		160000 Mtexels/sec
	Difference: 27488 (17%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon R9 390 8G is superior to the GeForce GTX Titan, by a large margin. (explain)

Radeon R9 390 8G		64000 Mpixels/sec
GeForce GTX Titan		40176 Mpixels/sec
	Difference: 23824 (59%)

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 max amount of data (counted in MB per second) that can be transported past the external memory interface within a second. It's worked out by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the clock speed of the card. 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 also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.