GeForce GTX 860M vs Radeon R9 390 8G

Intro

Compare those specifications to the Radeon R9 390 8G, which comes with 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 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 860M		4340 points
	Difference: 8393 (193%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 860M		45 Watts
Radeon R9 390 8G		275 Watts
	Difference: 230 Watts (511%)

Memory Bandwidth

The Radeon R9 390 8G should theoretically perform a lot faster than the GeForce GTX 860M in general. (explain)

Radeon R9 390 8G		384000 MB/sec
GeForce GTX 860M		64000 MB/sec
	Difference: 320000 (500%)

Texel Rate

The Radeon R9 390 8G should be much (approximately 109%) faster with regards to anisotropic filtering than the GeForce GTX 860M. (explain)

Radeon R9 390 8G		160000 Mtexels/sec
GeForce GTX 860M		76512 Mtexels/sec
	Difference: 83488 (109%)

Pixel Rate

The Radeon R9 390 8G should be quite a bit (about 402%) better at FSAA than the GeForce GTX 860M, and will be able to handle higher screen resolutions better. (explain)

Radeon R9 390 8G		64000 Mpixels/sec
GeForce GTX 860M		12752 Mpixels/sec
	Difference: 51248 (402%)

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 maximum amount of information (in units of MB per second) that can be transferred past the external memory interface in one second. The number is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's 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 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 better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.