GeForce GTX 880M vs Radeon HD 6790

Intro

Compare all of that to the Radeon HD 6790, which has a core clock speed of 840 MHz and a GDDR5 memory speed of 1050 MHz. It also features a 256-bit bus, and makes use of a 40 nm design. It is comprised of 800 SPUs, 40 Texture Address Units, and 16 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 6790		2150 points
	Difference: 4210 (196%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 880M		130 Watts
Radeon HD 6790		150 Watts
	Difference: 20 Watts (15%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6790 should be just a bit faster than the GeForce GTX 880M in general. (explain)

Radeon HD 6790		134400 MB/sec
GeForce GTX 880M		128000 MB/sec
	Difference: 6400 (5%)

Texel Rate

The GeForce GTX 880M will be a lot (approximately 263%) faster with regards to AF than the Radeon HD 6790. (explain)

GeForce GTX 880M		122112 Mtexels/sec
Radeon HD 6790		33600 Mtexels/sec
	Difference: 88512 (263%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 880M is a better choice, by far. (explain)

GeForce GTX 880M		30528 Mpixels/sec
Radeon HD 6790		13440 Mpixels/sec
	Difference: 17088 (127%)

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 max amount of information (measured in MB per second) that can be transported past the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory speed. If it uses DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.