GeForce GTX 970M vs Radeon R9 390X 8G

Intro

Compare all of that to the Radeon R9 390X 8G, which features clock speeds of 1050 MHz on the GPU, and 1500 MHz on the 8192 MB of GDDR5 memory. It features 2816 SPUs as well as 176 TAUs and 64 Rasterization Operator Units.

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 970M		7520 points
	Difference: 6035 (80%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 970M		75 Watts
Radeon R9 390X 8G		275 Watts
	Difference: 200 Watts (267%)

Memory Bandwidth

Performance-wise, the Radeon R9 390X 8G should in theory be much better than the GeForce GTX 970M overall. (explain)

Radeon R9 390X 8G		384000 MB/sec
GeForce GTX 970M		96000 MB/sec
	Difference: 288000 (300%)

Texel Rate

The Radeon R9 390X 8G will be a lot (more or less 150%) more effective at AF than the GeForce GTX 970M. (explain)

Radeon R9 390X 8G		184800 Mtexels/sec
GeForce GTX 970M		73920 Mtexels/sec
	Difference: 110880 (150%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R9 390X 8G is a better choice, and very much so. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
GeForce GTX 970M		44352 Mpixels/sec
	Difference: 22848 (52%)

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 information (measured in MB per second) that can be moved over the external memory interface within a second. The number is calculated by multiplying the bus width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 once 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 anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated 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 fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.