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No SLI in NV Control Panel

post #1 of 9
Thread Starter 
Guys does anybody know why I have no SLI option in my Control Panel? I used to have 2x 670 2GB asus, one of which was under water and I had to rma it (few drops of water on pcb killed it). Got EVGA 4GB SC instead of asus and I can not use SLI now. I've tried reinstalling drivers, put cards in different slots, used different SLI Bridges. Both cards are fine and work well. I just can't use SLI even on clean system.
post #2 of 9
Might be because the cards have different ram sizes
I had to use 'coolbits' to get my 512 & 1gb gts 250's to work..but the 1gb then only used 512mb VRAM.if possible you would be better off getting another matching evga 4gb..
http://www.nvidia.com/object/slizone_ask_mmm005.html
http://www.nvidia.com/object/IO_27182.html
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post #3 of 9
Thread Starter 
You sir are my hero smile.gif It's alive now.
post #4 of 9
Just curious, how did you RMA an ASUS for an EVGA? lol
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post #5 of 9
Thread Starter 
I sent my card back to the shop and they asked if I want evga instead of asus. Both cards were going under water so I picked evga.
post #6 of 9
no worries, glad i could help thumb.gif
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dragon
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post #7 of 9
Thread Starter 
You did. SLI avalible but works like ****. Restaring my pc whli "gaming". Have to sell EVGA and buy 2GB card I suppose
post #8 of 9
Maybe not.. I had a similar issue- turned out to be power supply,not enough juice..
Assuming sli worked ok with 2 x asus 2gb cards then supply should be fine, but make sure you're not running all gpu power off single lead from psu.
Also try swapping the cards around, update/reinstall to latest drivers..that will get latest sli profiles, check if it reboots on all games.
Does it reboot as soon as you start the game or does it run ok for a while(then could be gpu temps..)
Check that both cards have same clock speeds, underclock one if you have to.

Sli is fiddly , some games run ok, some stutter, others don't seem to gain much compared to single card.
Generally you want to to use exactly the same cards.ie manufacturer,model,ram,clocks all same..

If you are going to match them , I'd go with the asus with 4gb.

Good luck
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dragon
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raystorm cpu & gpu block ek d5 pump & top win 7 corsair gs 700 
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corsair 750d 
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3970k rampage iv extreme gainward gtx 970 gskill ripjaw ddr3 2400 
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sandisk extreme alphacool white monsta 360 coolgate 480  xspc raystrm 670 block 
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2600k msi z77 mpower big bang gtx 570 kingston hyperx beast ddr3 
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kingston ssd now v300 xspc rastorm cpu block ek fc570 se gpu block xspc rx240 rad 
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post #9 of 9
Thread Starter 
Don't need 4GB since I play only @1080p. Also the only thing that have to match is amoutn of RAM (which I know now) and since I own a block for ref. GTX670 buying Asus is pointless. I would have to sell one block and buy another 'caue DCII is has non ref. PCB. I sold the card already and I go with EVGA with 2GB of ram (or maybe you guys know better ref cards ot should I get the cheapest card? smile.gif).
About that rebootig. Most of the times I just got a black screen and that was it. Even when SLI was enabled only one card was working proplerly and second card was (according to precision x) was not (although the usage was pretty decent the clocks never reached 400mhz). GPUZ showed no RAM on EVGA card. It's clearly a problem between cards and I "thank You" person who told me that SLI is possible with 4gb and 2gb card (not from this forum).

PS. EVGA is sooooo smaaaaal compared to ASUS DCII
Edited by natsu2014 - 3/23/13 at 1:42am
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