GeForce GTX 650 Ti vs GeForce GTX 660

Intro

Compare that to the GeForce GTX 660, which comes with a core clock speed of 980 MHz and a GDDR5 memory speed of 1502 MHz. It also makes use of a 192-bit memory bus, and uses a 28 nm design. It is comprised of 960 SPUs, 80 Texture Address Units, and 24 ROPs.

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		5063 points
GeForce GTX 650 Ti		3434 points
	Difference: 1629 (47%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti		110 Watts
GeForce GTX 660		140 Watts
	Difference: 30 Watts (27%)

Memory Bandwidth

In theory, the GeForce GTX 660 should be 67% quicker than the GeForce GTX 650 Ti in general, because of its higher data rate. (explain)

GeForce GTX 660		144192 MB/sec
GeForce GTX 650 Ti		86400 MB/sec
	Difference: 57792 (67%)

Texel Rate

The GeForce GTX 660 will be quite a bit (about 32%) more effective at anisotropic filtering than the GeForce GTX 650 Ti. (explain)

GeForce GTX 660		78400 Mtexels/sec
GeForce GTX 650 Ti		59392 Mtexels/sec
	Difference: 19008 (32%)

Pixel Rate

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

GeForce GTX 660		23520 Mpixels/sec
GeForce GTX 650 Ti		14848 Mpixels/sec
	Difference: 8672 (58%)

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 transported across the external memory interface within a second. It's calculated by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total amount of texture units by the core clock 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.