GeForce GTX 850M vs Radeon R9 390 8G

Intro

Compare those specs to the Radeon R9 390 8G, which features a core clock speed of 1000 MHz and a GDDR5 memory speed of 1500 MHz. It also features a 512-bit bus, and uses a 28 nm design. It is made up of 2560 SPUs, 160 TAUs, and 64 Raster Operation Units.

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

Radeon R9 390 8G		12733 points
GeForce GTX 850M		3340 points
	Difference: 9393 (281%)

Zcash Mining Hash Rate

Radeon R9 390 8G		326 Sol/s
GeForce GTX 850M		49 Sol/s
	Difference: 277 (565%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M		40 Watts
Radeon R9 390 8G		275 Watts
	Difference: 235 Watts (588%)

Memory Bandwidth

The Radeon R9 390 8G, in theory, should perform much faster than the GeForce GTX 850M overall. (explain)

Radeon R9 390 8G		384000 MB/sec
GeForce GTX 850M		32000 MB/sec
	Difference: 352000 (1100%)

Texel Rate

The Radeon R9 390 8G will be quite a bit (about 357%) better at anisotropic filtering than the GeForce GTX 850M. (explain)

Radeon R9 390 8G		160000 Mtexels/sec
GeForce GTX 850M		35040 Mtexels/sec
	Difference: 124960 (357%)

Pixel Rate

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

Radeon R9 390 8G		64000 Mpixels/sec
GeForce GTX 850M		14016 Mpixels/sec
	Difference: 49984 (357%)

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 MB per second) that can be transported over the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total amount 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 applied in one second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called 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.