Geforce GTX 770 vs Radeon HD 6790

Intro

Compare those specs to the Radeon HD 6790, which has clock speeds of 840 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 RAM. It features 800 SPUs as well as 40 Texture Address Units 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 770		7854 points
Radeon HD 6790		2150 points
	Difference: 5704 (265%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6790		150 Watts
Geforce GTX 770		230 Watts
	Difference: 80 Watts (53%)

Memory Bandwidth

The Geforce GTX 770, in theory, should be quite a bit faster than the Radeon HD 6790 in general. (explain)

Geforce GTX 770		224384 MB/sec
Radeon HD 6790		134400 MB/sec
	Difference: 89984 (67%)

Texel Rate

The Geforce GTX 770 should be much (about 298%) better at texture filtering than the Radeon HD 6790. (explain)

Geforce GTX 770		133888 Mtexels/sec
Radeon HD 6790		33600 Mtexels/sec
	Difference: 100288 (298%)

Pixel Rate

The Geforce GTX 770 is quite a bit (more or less 149%) faster with regards to full screen anti-aliasing than the Radeon HD 6790, and able to handle higher resolutions more effectively. (explain)

Geforce GTX 770		33472 Mpixels/sec
Radeon HD 6790		13440 Mpixels/sec
	Difference: 20032 (149%)

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 data (counted in megabytes per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines 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 output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.