GeForce GTX 880M vs Radeon R9 380 4G

Intro

Compare those specs to the Radeon R9 380 4G, which comes with a core clock frequency of 970 MHz and a GDDR5 memory speed of 1425 MHz. It also uses a 256-bit bus, and makes use of a 28 nm design. It features 1792 SPUs, 112 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 380 4G		8837 points
GeForce GTX 880M		6360 points
	Difference: 2477 (39%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 880M		130 Watts
Radeon R9 380 4G		190 Watts
	Difference: 60 Watts (46%)

Memory Bandwidth

The Radeon R9 380 4G should in theory be much faster than the GeForce GTX 880M overall. (explain)

Radeon R9 380 4G		182400 MB/sec
GeForce GTX 880M		128000 MB/sec
	Difference: 54400 (43%)

Texel Rate

The GeForce GTX 880M is a little bit (more or less 12%) better at texture filtering than the Radeon R9 380 4G. (explain)

GeForce GTX 880M		122112 Mtexels/sec
Radeon R9 380 4G		108640 Mtexels/sec
	Difference: 13472 (12%)

Pixel Rate

The Radeon R9 380 4G should be a bit (more or less 2%) better at full screen anti-aliasing than the GeForce GTX 880M, and will be capable of handling higher resolutions without losing too much performance. (explain)

Radeon R9 380 4G		31040 Mpixels/sec
GeForce GTX 880M		30528 Mpixels/sec
	Difference: 512 (2%)

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 largest amount of data (counted in MB per second) that can be transported past the external memory interface within a second. It is worked out by multiplying the bus width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, 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 can be processed per second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.