GeForce GTX 870M vs Radeon R9 270X

Intro

Compare that to the Radeon R9 270X, which uses a 28 nm design. AMD has set the core frequency at 1000 MHz. The GDDR5 RAM is set to run at a frequency of 1400 MHz on this particular model. It features 1280 SPUs along with 80 TAUs and 32 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 270X		6590 points
GeForce GTX 870M		4770 points
	Difference: 1820 (38%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 870M		110 Watts
Radeon R9 270X		180 Watts
	Difference: 70 Watts (64%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 270X should be 87% quicker than the GeForce GTX 870M overall, due to its higher bandwidth. (explain)

Radeon R9 270X		179200 MB/sec
GeForce GTX 870M		96000 MB/sec
	Difference: 83200 (87%)

Texel Rate

The GeForce GTX 870M will be quite a bit (about 32%) better at anisotropic filtering than the Radeon R9 270X. (explain)

GeForce GTX 870M		105392 Mtexels/sec
Radeon R9 270X		80000 Mtexels/sec
	Difference: 25392 (32%)

Pixel Rate

The Radeon R9 270X should be much (more or less 42%) more effective at anti-aliasing than the GeForce GTX 870M, and will be able to handle higher resolutions while still performing well. (explain)

Radeon R9 270X		32000 Mpixels/sec
GeForce GTX 870M		22584 Mpixels/sec
	Difference: 9416 (42%)

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 information (measured in MB per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the bus width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number 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 speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated 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 outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.