GeForce GTX 780 Ti vs Radeon HD 6790

Intro

Compare those specs to the Radeon HD 6790, which features a GPU core clock speed of 840 MHz, and 1024 MB of GDDR5 memory set to run at 1050 MHz through a 256-bit bus. It also is made up of 800 Stream Processors, 40 Texture Address Units, and 16 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 780 Ti		10900 points
Radeon HD 6790		2150 points
	Difference: 8750 (407%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6790		150 Watts
GeForce GTX 780 Ti		250 Watts
	Difference: 100 Watts (67%)

Memory Bandwidth

Performance-wise, the GeForce GTX 780 Ti should theoretically be much better than the Radeon HD 6790 in general. (explain)

GeForce GTX 780 Ti		336000 MB/sec
Radeon HD 6790		134400 MB/sec
	Difference: 201600 (150%)

Texel Rate

The GeForce GTX 780 Ti should be much (approximately 525%) more effective at AF than the Radeon HD 6790. (explain)

GeForce GTX 780 Ti		210000 Mtexels/sec
Radeon HD 6790		33600 Mtexels/sec
	Difference: 176400 (525%)

Pixel Rate

The GeForce GTX 780 Ti is much (about 213%) better at FSAA than the Radeon HD 6790, and should be able to handle higher screen resolutions more effectively. (explain)

GeForce GTX 780 Ti		42000 Mpixels/sec
Radeon HD 6790		13440 Mpixels/sec
	Difference: 28560 (213%)

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 (in units of MB per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the interface width by its memory speed. In the case of DDR type memory, it must 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 high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.