GeForce GTX 980 Ti vs Radeon R9 390 8G

Intro

Compare all that to the Radeon R9 390 8G, which has a clock frequency of 1000 MHz and a GDDR5 memory speed of 1500 MHz. It also features a 512-bit bus, and makes use of a 28 nm design. It is made up of 2560 SPUs, 160 Texture Address Units, and 64 ROPs.

Display Graphs

Hide Graphs

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

In theory, the Radeon R9 390 8G is 14% faster than the GeForce GTX 980 Ti overall, because of its greater bandwidth. (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 is a bit (approximately 10%) better at AF 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

If running with a high resolution is important to you, then the GeForce GTX 980 Ti is superior to the Radeon R9 390 8G, and very much so. (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: Memory bandwidth is the largest amount of data (counted in megabytes per second) that can be moved past the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the video 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 can possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.