GeForce GTX 880M vs Radeon HD 7870

Intro

Compare all of that to the Radeon HD 7870, which uses a 28 nm design. AMD has clocked the core speed at 1000 MHz. The GDDR5 memory runs at a speed of 1200 MHz on this specific model. It features 1280 SPUs as well as 80 TAUs 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

GeForce GTX 880M		6360 points
Radeon HD 7870		6230 points
	Difference: 130 (2%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 880M		130 Watts
Radeon HD 7870		175 Watts
	Difference: 45 Watts (35%)

Memory Bandwidth

The Radeon HD 7870 should in theory perform a little bit faster than the GeForce GTX 880M overall. (explain)

Radeon HD 7870		153600 MB/sec
GeForce GTX 880M		128000 MB/sec
	Difference: 25600 (20%)

Texel Rate

The GeForce GTX 880M should be much (approximately 53%) more effective at AF than the Radeon HD 7870. (explain)

GeForce GTX 880M		122112 Mtexels/sec
Radeon HD 7870		80000 Mtexels/sec
	Difference: 42112 (53%)

Pixel Rate

The Radeon HD 7870 is just a bit (more or less 5%) better at FSAA than the GeForce GTX 880M, and also should be capable of handling higher resolutions better. (explain)

Radeon HD 7870		32000 Mpixels/sec
GeForce GTX 880M		30528 Mpixels/sec
	Difference: 1472 (5%)

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: Memory bandwidth is the maximum amount of information (counted in MB per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better 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 can be applied per second. This number is calculated by multiplying the total number of 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.