GeForce GTX 880M vs Radeon HD 7870

Intro

Compare all that to the Radeon HD 7870, which features a core clock frequency of 1000 MHz and a GDDR5 memory speed of 1200 MHz. It also uses a 256-bit bus, and uses a 28 nm design. It is comprised of 1280 SPUs, 80 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

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 a lot (about 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

If running with high levels of AA is important to you, then the Radeon HD 7870 is the winner, though not by far. (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: Bandwidth is the maximum amount of information (measured in megabytes per second) that can be transferred over the external memory interface in one second. It is worked out by multiplying the bus width by its memory speed. In the case of DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better 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 texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics 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 colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.