GeForce GTX 660 Ti vs Radeon HD 6770

Intro

Compare those specifications to the Radeon HD 6770, which features a core clock frequency of 900 MHz and a GDDR5 memory speed of 1050 MHz. It also makes use of a 128-bit memory bus, and uses a 40 nm design. It features 800 SPUs, 40 TAUs, 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 660 Ti		6013 points
Radeon HD 6770		1520 points
	Difference: 4493 (296%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770		108 Watts
GeForce GTX 660 Ti		150 Watts
	Difference: 42 Watts (39%)

Memory Bandwidth

In theory, the GeForce GTX 660 Ti should perform much faster than the Radeon HD 6770 in general. (explain)

GeForce GTX 660 Ti		144000 MB/sec
Radeon HD 6770		67200 MB/sec
	Difference: 76800 (114%)

Texel Rate

The GeForce GTX 660 Ti should be much (approximately 185%) better at AF than the Radeon HD 6770. (explain)

GeForce GTX 660 Ti		102480 Mtexels/sec
Radeon HD 6770		36000 Mtexels/sec
	Difference: 66480 (185%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 660 Ti is a better choice, by a large margin. (explain)

GeForce GTX 660 Ti		21960 Mpixels/sec
Radeon HD 6770		14400 Mpixels/sec
	Difference: 7560 (53%)

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 past the external memory interface in a second. The number is worked out by multiplying the bus width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes 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, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.