GeForce GTX 880M vs Radeon HD 7850

Intro

Compare those specifications to the Radeon HD 7850, which features a core clock frequency of 860 MHz and a GDDR5 memory frequency of 1200 MHz. It also uses a 256-bit memory bus, and makes use of a 28 nm design. It is made up of 1024 SPUs, 64 TAUs, and 32 Raster Operation 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

GeForce GTX 880M		6360 points
Radeon HD 7850		5200 points
	Difference: 1160 (22%)

Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

Performance-wise, the Radeon HD 7850 should in theory be a little bit superior to the GeForce GTX 880M in general. (explain)

Radeon HD 7850		153600 MB/sec
GeForce GTX 880M		128000 MB/sec
	Difference: 25600 (20%)

Texel Rate

The GeForce GTX 880M is quite a bit (approximately 122%) faster with regards to anisotropic filtering than the Radeon HD 7850. (explain)

GeForce GTX 880M		122112 Mtexels/sec
Radeon HD 7850		55040 Mtexels/sec
	Difference: 67072 (122%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 880M is a better choice, though only just barely. (explain)

GeForce GTX 880M		30528 Mpixels/sec
Radeon HD 7850		27520 Mpixels/sec
	Difference: 3008 (11%)

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 megabytes per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. 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 worked out by multiplying the total texture units of the card by the core speed of the chip. The better this number, 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 most pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.