GeForce GTX 880M vs Radeon R9 290X

Intro

Compare all of that to the Radeon R9 290X, which comes with clock speeds of 800 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 RAM. It features 2816 SPUs as well as 176 Texture Address Units and 64 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 290X		10609 points
GeForce GTX 880M		6360 points
	Difference: 4249 (67%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 880M		130 Watts
Radeon R9 290X		300 Watts
	Difference: 170 Watts (131%)

Memory Bandwidth

In theory, the Radeon R9 290X should be 150% faster than the GeForce GTX 880M in general, because of its greater bandwidth. (explain)

Radeon R9 290X		320000 MB/sec
GeForce GTX 880M		128000 MB/sec
	Difference: 192000 (150%)

Texel Rate

The Radeon R9 290X will be a bit (approximately 15%) better at AF than the GeForce GTX 880M. (explain)

Radeon R9 290X		140800 Mtexels/sec
GeForce GTX 880M		122112 Mtexels/sec
	Difference: 18688 (15%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 290X is superior to the GeForce GTX 880M, by far. (explain)

Radeon R9 290X		51200 Mpixels/sec
GeForce GTX 880M		30528 Mpixels/sec
	Difference: 20672 (68%)

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 past the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's 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 applied per second. This figure is calculated by multiplying the total texture units by the core clock speed of the chip. The higher 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 one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.