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MSI GTX 580 lightning sli with Direct CU ii,some pre purchase concerns - Page 2

post #11 of 16
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Quote:
Originally Posted by MSIalex View Post
As a general rule of thumb, you should have one slot of space between the top and bottom cards (accounting for the thickness of cooling solution).
looking at my mobo,with the MSI lightning on top and the CUII at the bottom id probably have a gap of 1 PCI E 4x slot space in the middle so i hope it fits and temps are manageable
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post #12 of 16
If he put the ASUS DCUII card in the top slot would mean that he'd be covering PCIe slot #2 and would have to put the second card in PCIe slot #3? So PCIe slot #1 and #3 would be occupied.

I'm thinking if he went with the opposite he'd have the first and second PCIe slot occupied instead, since the ASUS DCUII card taking 3 spaces would cover the last PCIe slot.

Are there any known issues in SLI if the second PCIe slot isn't occupied on a two card set up?
     
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post #13 of 16
How are your temps now, i'm having the same question than you
post #14 of 16
I want to change my recommendation that I made above to echo what most other have been saying, put the cards in whatever order will allow for a space between the top and bottom cards. Previously I had thought that a DCII would still be able to perform better than a reference even with it being slightly starved for air by sitting right on top of another card, but since then I've seen too many instances of that not being the case. I now recommend organizing the cards in just about any way that will allow a space between the top and bottom cards.
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post #15 of 16
This is the setup I have.

Reason I didn't get another CU II was purely because there wouldn't have been sufficient gap between the cards, otherwise I would've grabbed it.

The Lightning is louder but you can tune it down using afterburner obviously, for me it's on the top slot and CU II at the bottom slot (top card runs warmer of course). I've only got them clocked at 832 / 2100 and they reach ~69 when gaming (such as BFBC2) with around 50% fan speed.

For fans, I've got 120mm Nexus Real Silent - 2 at front of the case and 1 at the back, all exhaust (these I control using the AI Suite FanXpert).
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post #16 of 16
You might want to make your 2 in the front to be intakes, that ought to drops temps a little bit. Nice choice of fans btw, I've got 2 of those as intakes and I love 'em.
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