GeForce GTX 850M vs Radeon R9 380 4G

Intro

Compare all that to the Radeon R9 380 4G, which has a core clock speed of 970 MHz and a GDDR5 memory frequency of 1425 MHz. It also uses a 256-bit memory bus, and uses a 28 nm design. It is comprised of 1792 SPUs, 112 TAUs, and 32 Raster Operation 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 380 4G		8837 points
GeForce GTX 850M		3340 points
	Difference: 5497 (165%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M		40 Watts
Radeon R9 380 4G		190 Watts
	Difference: 150 Watts (375%)

Memory Bandwidth

The Radeon R9 380 4G should theoretically perform quite a bit faster than the GeForce GTX 850M in general. (explain)

Radeon R9 380 4G		182400 MB/sec
GeForce GTX 850M		32000 MB/sec
	Difference: 150400 (470%)

Texel Rate

The Radeon R9 380 4G will be much (about 210%) better at AF than the GeForce GTX 850M. (explain)

Radeon R9 380 4G		108640 Mtexels/sec
GeForce GTX 850M		35040 Mtexels/sec
	Difference: 73600 (210%)

Pixel Rate

The Radeon R9 380 4G will be much (about 121%) faster with regards to FSAA than the GeForce GTX 850M, and capable of handling higher resolutions without slowing down too much. (explain)

Radeon R9 380 4G		31040 Mpixels/sec
GeForce GTX 850M		14016 Mpixels/sec
	Difference: 17024 (121%)

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 (counted in megabytes per second) that can be moved over the external memory interface within a second. The number is worked out by multiplying the bus width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 once again. If it uses 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better 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 one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.