GeForce GTX 980 Ti vs Radeon R9 390 8G

Intro

Compare those specifications to the Radeon R9 390 8G, which features core clock speeds of 1000 MHz on the GPU, and 1500 MHz on the 8192 MB of GDDR5 memory. It features 2560 SPUs along with 160 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 390 8G		12733 points
	Difference: 4387 (34%)

Zcash Mining Hash Rate

GeForce GTX 980 Ti		425 Sol/s
Radeon R9 390 8G		326 Sol/s
	Difference: 99 (30%)

Ethereum Mining Hash Rate

Radeon R9 390 8G		28 Mh/s
GeForce GTX 980 Ti		22 Mh/s
	Difference: 6 (27%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

As far as performance goes, the Radeon R9 390 8G should theoretically be a little bit better than the GeForce GTX 980 Ti overall. (explain)

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

Texel Rate

The GeForce GTX 980 Ti should be a small bit (more or less 10%) better at anisotropic filtering than the Radeon R9 390 8G. (explain)

GeForce GTX 980 Ti		176000 Mtexels/sec
Radeon R9 390 8G		160000 Mtexels/sec
	Difference: 16000 (10%)

Pixel Rate

The GeForce GTX 980 Ti will be quite a bit (more or less 50%) faster with regards to full screen anti-aliasing than the Radeon R9 390 8G, and also able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 980 Ti		96000 Mpixels/sec
Radeon R9 390 8G		64000 Mpixels/sec
	Difference: 32000 (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: Bandwidth is the max amount of information (measured in MB per second) that can be transported past the external memory interface in a second. It is calculated by multiplying the bus width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster 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 can be processed per 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 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 can possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.