GeForce GTX 980 Ti vs Radeon R9 390X 8G

Intro

Compare all of that to the Radeon R9 390X 8G, which uses a 28 nm design. AMD has set the core frequency at 1050 MHz. The GDDR5 memory is set to run at a frequency of 1500 MHz on this model. It features 2816 SPUs as well as 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

GeForce GTX 980 Ti		17120 points
Radeon R9 390X 8G		13555 points
	Difference: 3565 (26%)

Zcash Mining Hash Rate

GeForce GTX 980 Ti		425 Sol/s
Radeon R9 390X 8G		330 Sol/s
	Difference: 95 (29%)

Ethereum Mining Hash Rate

Radeon R9 390X 8G		32 Mh/s
GeForce GTX 980 Ti		22 Mh/s
	Difference: 10 (45%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 980 Ti		250 Watts
Radeon R9 390X 8G		275 Watts
	Difference: 25 Watts (10%)

Memory Bandwidth

The Radeon R9 390X 8G, in theory, should be a small bit faster than the GeForce GTX 980 Ti overall. (explain)

Radeon R9 390X 8G		384000 MB/sec
GeForce GTX 980 Ti		336000 MB/sec
	Difference: 48000 (14%)

Texel Rate

The Radeon R9 390X 8G will be just a bit (more or less 5%) faster with regards to anisotropic filtering than the GeForce GTX 980 Ti. (explain)

Radeon R9 390X 8G		184800 Mtexels/sec
GeForce GTX 980 Ti		176000 Mtexels/sec
	Difference: 8800 (5%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 980 Ti is superior to the Radeon R9 390X 8G, by a large margin. (explain)

GeForce GTX 980 Ti		96000 Mpixels/sec
Radeon R9 390X 8G		67200 Mpixels/sec
	Difference: 28800 (43%)

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 (in units of MB per second) that can be moved past the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.