Possible to SLI GTX650 and GTX660?

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you could use the 660ti as your main GPU, and use the 650ti B as a dedicated PhysX card. But it's one hell of an expensive PhysX card!! :)

You would need to make sure you have a big enough PSU to power them both though, along with the 6/8 pin connectors which would be required for both cards.

it is an option though.
 

Broba Fett

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That sounds really interesting, unfortunately I have no idea what it means. How would that work?
 


Well, to start, list your full system specs, and we can see what's what. As I've already outlined though, and mousemonkey has alluded to, it will be one hell of an expensive PhysX card. Mouse monkey is also correct, PhysX doesn't work in all games, there are only some that use it. But those that do, look so much better.

here's the list of games that support it.

http://en.wikipedia.org/wiki/List_of_games_with_hardware-accelerated_PhysX_support

Out of that list, I play maybe 6 of those games regularly. Batman Series, Borderlands 2, MOH Airborne, Mirros Edge, Metro 2033, Tom Clancy too.

So unless you play some of those games in the list it is a waste. But if you already have both GPU's then, Id be giving it a go, if it were me :)

The main thing is you need to have a motherboard capable of sli ( so you have two slots)and a PSU with sufficient power to keep both running. And as I've said above the PSU must have 3 x 6pin power connectors.

But it's doable, has some performance increase, it looks pretty in games tha use it, and the list is growing too, albeit slowly :)
 

Broba Fett

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I haven't bought the 660 yet but all of the games you mentioned I play a lot of so that great and I'm up for trying this :) my rig is:
1. Gigabyte GTX650 Ti Booster
2. Intel i5 4670 Haswell
3. MSI Z87-GD65
4. G.Skill 4Gb x 2 Ripjaws
5. Corsair GS-700 PS
6. 1TB WD HDD
The motherboard is definately capable of SLI but the PS only has 4 pin connectors, 6 of them. Do I need a new PS? If so whats a good one to go for?
Thanks :)
 


Nice system, I'm jealous!!! :) hmm on the psu, well you have two 6/8 pin connectors which is one short of what you need. You need three in total. You could simply buy an adaptor which would be the cheapest option. You would connect it to one of our standard power cable, and it turns it into a 6/8 pin. That would cost very little. Asides from that your PSU has enough power, it's 80+ certified, which is something, but a lot of guys on Tom's don't rate the GS model.

Something like this would be perfect, and XFX are one of the better brand PSU's.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817207014



 


well it's actually very easy. You simply put the 660ti in as your main card. Then put the boost in as the second card. Obviously make sure all power connectors are in. You do not require an sli bridge. So don't worry about that. Then once the comp is booted you need to go to Nvidia control panel, and the PhysX tab. You can select the boost as dedicated PhysX, and away you go! Might be worth while doing a clean install of the latest driver to ensure proper functionality. But asides from that it's straight forward.
 

Broba Fett

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Sep 8, 2013
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Wow, I honestly didn't expect it to be that easy! Thanks for all the help, its a long shot from where I started and I appreciate it all :) Cheers
 


no probs :) don't forget to select best answer! And although mousemonkey has given you the most direct answer to your original question, I think I've been just as helpful, so I think I should get best answer!! :) :D :)
 
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