GeForce GTX 970 vs Radeon R9 390 8G

Intro

Compare those specs to the Radeon R9 390 8G, which comes with a clock frequency of 1000 MHz and a GDDR5 memory speed of 1500 MHz. It also makes use of a 512-bit memory bus, and uses a 28 nm design. It features 2560 SPUs, 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 970		10867 points
	Difference: 1866 (17%)

Zcash Mining Hash Rate

Radeon R9 390 8G		326 Sol/s
GeForce GTX 970		262 Sol/s
	Difference: 64 (24%)

Ethereum Mining Hash Rate

Radeon R9 390 8G		28 Mh/s
GeForce GTX 970		19 Mh/s
	Difference: 9 (47%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 970		145 Watts
Radeon R9 390 8G		275 Watts
	Difference: 130 Watts (90%)

Memory Bandwidth

In theory, the Radeon R9 390 8G should be quite a bit faster than the GeForce GTX 970 overall. (explain)

Radeon R9 390 8G		384000 MB/sec
GeForce GTX 970		224000 MB/sec
	Difference: 160000 (71%)

Texel Rate

The Radeon R9 390 8G is quite a bit (approximately 47%) faster with regards to anisotropic filtering than the GeForce GTX 970. (explain)

Radeon R9 390 8G		160000 Mtexels/sec
GeForce GTX 970		109200 Mtexels/sec
	Difference: 50800 (47%)

Pixel Rate

The GeForce GTX 970 is a bit (approximately 5%) more effective at FSAA than the Radeon R9 390 8G, and also should be able to handle higher screen resolutions more effectively. (explain)

GeForce GTX 970		67200 Mpixels/sec
Radeon R9 390 8G		64000 Mpixels/sec
	Difference: 3200 (5%)

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 information (in units of megabytes per second) that can be transferred past the external memory interface within a second. It's worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better 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 per second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to the 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 the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.