GeForce GTX 660 Ti vs Geforce GTX 770

Intro

Compare those specs to the Geforce GTX 770, which features a core clock frequency of 1046 MHz and a GDDR5 memory speed of 1753 MHz. It also features a 256-bit memory bus, and uses a 28 nm design. It is comprised of 1536 SPUs, 128 TAUs, and 32 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 770		7854 points
GeForce GTX 660 Ti		6013 points
	Difference: 1841 (31%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 Ti		150 Watts
Geforce GTX 770		230 Watts
	Difference: 80 Watts (53%)

Memory Bandwidth

In theory, the Geforce GTX 770 should be 56% quicker than the GeForce GTX 660 Ti in general, because of its higher data rate. (explain)

Geforce GTX 770		224384 MB/sec
GeForce GTX 660 Ti		144000 MB/sec
	Difference: 80384 (56%)

Texel Rate

The Geforce GTX 770 should be quite a bit (about 31%) faster with regards to AF than the GeForce GTX 660 Ti. (explain)

Geforce GTX 770		133888 Mtexels/sec
GeForce GTX 660 Ti		102480 Mtexels/sec
	Difference: 31408 (31%)

Pixel Rate

The Geforce GTX 770 will be quite a bit (about 52%) better at anti-aliasing than the GeForce GTX 660 Ti, and will be able to handle higher resolutions without slowing down too much. (explain)

Geforce GTX 770		33472 Mpixels/sec
GeForce GTX 660 Ti		21960 Mpixels/sec
	Difference: 11512 (52%)

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 largest amount of data (measured in megabytes per second) that can be moved over the external memory interface in a second. The number is worked out by multiplying the interface width by its memory speed. If it uses DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, 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 texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the graphics 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 record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.