GeForce GTX 660 Ti vs Geforce GTX 770

Intro

Compare those specifications to the Geforce GTX 770, which comes with a core clock speed of 1046 MHz and a GDDR5 memory frequency of 1753 MHz. It also uses a 256-bit memory bus, and makes use of a 28 nm design. It is made up 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

The Geforce GTX 770, in theory, should be quite a bit faster than the GeForce GTX 660 Ti overall. (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 a lot (about 31%) more effective at 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 should be quite a bit (approximately 52%) more effective at FSAA than the GeForce GTX 660 Ti, and should be capable of handling higher screen resolutions while still performing well. (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 information (counted in MB per second) that can be moved across the external memory interface within a second. It's calculated by multiplying the interface width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster 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 are processed in one second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the 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 amount of pixels that the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.