GeForce GTX Titan vs Radeon R9 390X 8G

Intro

Compare that to the Radeon R9 390X 8G, which has a clock frequency of 1050 MHz and a GDDR5 memory speed of 1500 MHz. It also makes use of a 512-bit memory bus, and makes use of 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		10162 points
	Difference: 3393 (33%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

Performance-wise, the Radeon R9 390X 8G should in theory be much superior to the GeForce GTX Titan in general. (explain)

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

Texel Rate

The GeForce GTX Titan should be a little bit (more or less 1%) more effective at anisotropic filtering than the Radeon R9 390X 8G. (explain)

GeForce GTX Titan		187488 Mtexels/sec
Radeon R9 390X 8G		184800 Mtexels/sec
	Difference: 2688 (1%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 390X 8G is the winner, by a large margin. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
GeForce GTX Titan		40176 Mpixels/sec
	Difference: 27024 (67%)

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 maximum amount of data (measured in MB per second) that can be transferred past the external memory interface in one second. It is worked out by multiplying the interface width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster 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 are processed in one second. This is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at handling 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 its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.