GeForce GTX 870M vs Radeon R9 380X

Intro

Compare those specifications to the Radeon R9 380X, which uses a 28 nm design. AMD has clocked the core frequency at 970 MHz. The GDDR5 RAM works at a speed of 1425 MHz on this particular model. It features 2048 SPUs along with 128 Texture Address Units and 32 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 380X		9519 points
GeForce GTX 870M		4770 points
	Difference: 4749 (100%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 870M		110 Watts
Radeon R9 380X		190 Watts
	Difference: 80 Watts (73%)

Memory Bandwidth

Performance-wise, the Radeon R9 380X should theoretically be quite a bit superior to the GeForce GTX 870M overall. (explain)

Radeon R9 380X		182400 MB/sec
GeForce GTX 870M		96000 MB/sec
	Difference: 86400 (90%)

Texel Rate

The Radeon R9 380X should be a little bit (approximately 18%) better at AF than the GeForce GTX 870M. (explain)

Radeon R9 380X		124160 Mtexels/sec
GeForce GTX 870M		105392 Mtexels/sec
	Difference: 18768 (18%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R9 380X is superior to the GeForce GTX 870M, by a large margin. (explain)

Radeon R9 380X		31040 Mpixels/sec
GeForce GTX 870M		22584 Mpixels/sec
	Difference: 8456 (37%)

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 max amount of data (counted in MB per second) that can be transported over the external memory interface in one second. It's worked out by multiplying the bus width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the 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 number of texture map elements (texels) that are processed per second. This is calculated by multiplying the total number 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 processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.