GeForce GTX 980M vs Radeon HD 6790

Intro

Compare all that to the Radeon HD 6790, which comes with GPU core speed of 840 MHz, and 1024 MB of GDDR5 memory running at 1050 MHz through a 256-bit bus. It also is made up of 800 Stream Processors, 40 TAUs, and 16 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 980M		9476 points
Radeon HD 6790		2150 points
	Difference: 7326 (341%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 980M		100 Watts
Radeon HD 6790		150 Watts
	Difference: 50 Watts (50%)

Memory Bandwidth

The Radeon HD 6790 should theoretically perform just a bit faster than the GeForce GTX 980M overall. (explain)

Radeon HD 6790		134400 MB/sec
GeForce GTX 980M		128000 MB/sec
	Difference: 6400 (5%)

Texel Rate

The GeForce GTX 980M will be a lot (more or less 197%) more effective at AF than the Radeon HD 6790. (explain)

GeForce GTX 980M		99648 Mtexels/sec
Radeon HD 6790		33600 Mtexels/sec
	Difference: 66048 (197%)

Pixel Rate

The GeForce GTX 980M will be much (more or less 394%) more effective at FSAA than the Radeon HD 6790, and also will be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 980M		66432 Mpixels/sec
Radeon HD 6790		13440 Mpixels/sec
	Difference: 52992 (394%)

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 data (measured in megabytes per second) that can be transported over the external memory interface within a second. It's worked out by multiplying the bus width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.