GeForce GTX 660 Ti vs Geforce GTX 770

Intro

Compare those specifications to the Geforce GTX 770, which comes with core speeds of 1046 MHz on the GPU, and 1753 MHz on the 2048 MB of GDDR5 memory. It features 1536 SPUs as well as 128 TAUs and 32 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
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

Performance-wise, the Geforce GTX 770 should in theory be much better than the GeForce GTX 660 Ti in general. (explain)

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

Texel Rate

The Geforce GTX 770 is a lot (about 31%) better at texture filtering 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

If using a high resolution is important to you, then the Geforce GTX 770 is a better choice, by far. (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 maximum amount of data (measured in megabytes per second) that can be transported over the external memory interface within a second. The number is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.