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3DMark 2011

As expected, the original GeForce GTX 660s do not differ much in performance. They are 4 to 5% ahead of the reference card. Meanwhile, the ASUS GeForce GTX 660 Ti is 11 to 19% ahead of the trio while the Sapphire Radeon HD 7870 can only be challenged at the Extreme settings.

The SLI tandem of GeForce GTX 660s (Gigabyte + MSI) feels good here, winning the test. Its efficiency is up to 74% at the Performance settings, so it is 14% ahead of the top-end GeForce GTX 680. At the Extreme settings the tandem is 22% faster, sporting 90% efficiency. That’s impressive considering that two GeForce GTX 660s are currently cheaper than a single GeForce GTX 680.

Metro 2033: The Last Refuge

The resource-consuming Metro 2033 shows no difference between the pre-overclocked GeForce GTX 660s and the reference sample from Nvidia. The more expensive GeForce GTX 660 Ti isn’t much different, either. But the two GeForce GTX 660s in SLI mode sport a 90% performance growth and enjoy a 40% advantage over the GeForce GTX 680. The higher speed of the AMD-based solutions in this test should also be noted.

Total War: SHOGUN 2 – Fall of the Samurai

The four GeForce GTX 660s deliver similar performance in Total War: SHOGUN 2 – Fall of the Samurai. As opposed to Metro 2033, the GeForce GTX 660 Ti enjoys a larger advantage whereas the GeForce GTX 680 and the Radeon HD 7970 are the fastest single-GPU cards in this test. The SLI tandem built out of two GeForce GTX 660s is impressive again, beating the single such card by 85 to 90% and the GeForce GTX 680 by 27% in either graphics quality mode.

Crysis 2

The three original GeForce GTX 660s and the ASUS GeForce GTX 660 Ti have a low bottom frame rate although the reference Nvidia GeForce GTX 660 is better in this respect. The GTX 660 tandem improves the average frame rate by 83 to 84%, but its bottom speed remains as low as that of the single card. Same-class GeForce and Radeon products are comparable to each other in this test.

Battlefield 3

This game shows the same picture as the previous tests.

Sniper Elite V2 Benchmark

The AMD-based solutions are preferable in this test whereas the four GeForce GTX 660s don’t differ at all. The GeForce GTX 660 tandem is good in terms of average frame rate (90% higher compared to the single card) but fails in terms of bottom speed. Indeed, this benchmark was jerky, especially in the high-quality graphics mode with antialiasing.

Sleeping Dogs

The four GeForce GTX 660s are also close to each other in Sleeping Dogs. And they are all inferior to the Radeon HD 7870. The GeForce GTX 660 Ti is 13 to 19% ahead of the GTX 660s, depending on the graphics quality settings, and there’s the same gap between it and the faster GeForce GTX 680. It is the GeForce GTX 660 tandem that’s the fastest solution again. Its bottom speed is okay, unlike in the previous test.

F1 2012

F1 2012 is the only game in this test session where the 2-way GeForce GTX 660 SLI doesn’t work very well. With antialiasing turned off, its performance growth is so small that the two GTX 660s cannot beat the single GeForce GTX 680 although they easily did that before. With 8x MSAA enabled, the SLI mode cannot be activated at all, making the SLI tandem somewhat slower in comparison with the single such card.

Hitman: Absolution

The four GeForce GTX 660s and the GTX 660 Ti are all at the same performance level in Hitman: Absolution and are all outperformed by the Radeon HD 7870. The SLI tandem is very fast: 96% faster than the single card and almost 30% faster than the GeForce GTX 680. It does have problems with the bottom speed in the high-quality graphics mode, though. Unfortunately, that’s a common problem of all multi-GPU solutions from both Nvidia and AMD.

Here is a table with full test results:


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