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GTX 680 tri SLI+physx or Quad SLI

Lokiey
Level 7
Hey guys so in a few weeks ill finally have the funds to finish off my epic new build and wanted some advise from those who have tried it and worked best. The topic sais it best im on the fence about buying 2 more 680's for a quad sli configuration or 1 680 for tri sli and a 660 for physx. Ive read there has been instabilities with quad sli but hasnt stopped people from doing it and finding stable settings and nice performance gain. I also realize this is a bit over the top and honestly be over powered for games for the next few years but finally able to do it so i wanted too. So i would like to hear your thoughts and what you have found out or read that maybe i havent to help me with my decition as i dont want to have builders remorse over one or the other.

Current Specs

Asus Rampage IV Extreme
I7 3930k
64gb gskill z series 1866
2x EVGA GTX 680's
2x Samsung 840 pro 256gb Raid 0
Corsair 1200 watt ( will this support 2 more 680's? )
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17 REPLIES 17

SUKARA
Level 10
I think, mainly to see that you used in any place?
For example: the game
Under these games or programs, the list of support Nvidia official lists (for GTX680 series)
http://www.geforce.com/hardware/technology/physx/games

For GTX680 1 ~ 4 way SLI performance competitions are as follows: (Network Information)
19648
Above for your reference

Arne_Saknussemm
Level 40
Well, if you want to then go for it but you said it yourself quad sli can be a pain to get running and the performance gain is minor. The Physx thing you don't really need a separate card for it and something like an old GTX 9800 would run it perfectly. It would be a spectacularly rare case that you were maxing out an sli configuration to the point that running physx was detracting from performance. Truth is that this doesn't happen and the sli will always have resources to spare for physx and then the newer/faster card is always going to run it better.

Even pairing sli 680s with say a 580 for phys x would mean you are running physx worse...if you see what I mean

And the psu I doubt will support the quad sli just in terms of the number of cables you need....bearing in mind you should be plugging in another 6 pin connexion on the board

Also are you cooling this lot on water or air? you will not need an oven very soon 😉

HK-47
Level 10
You will need to order a cable kit or PCI-E cables from corsair. You can only run 2-3 cards with what is supplied with the PSU. The MB uses one of the cables for the extra 6-pin PCI-E power.
-Desktop-
Asus Crosshair VIII Dark Hero / AMD 5800x / 32GB Corsair Dominator Platinum RBG (CMT32GX4M4C3600C18) @ 3800 /2x Sabrent 1TB Rocket NVMe 4.0 (Raid 0)/ 1x Samsung 860 Evo SSD / Corsair AX1200 PSU / ASUS Strix Helios Case / Corsair HydroX Custom Loop D5, CX7, XG7 420+280 Rad/ Asus Strix 3090 / Asus PG35VQ Ultrawide Monitor / Corsair Commander PRO 3x ql120, 4x ql140 fans / Edifier 1850DB Speakers + T5 Sub /
Asus Theta 7.1 Headset

Zka17
Level 16
I've been there... 4-way SLI with GTX680s... - they're epic on the Rampage... :cool:

However, I have to agree with the previous posters: cost/performance increase is terrible... The best setup is 2-way SLI and no need for a dedicated PhysX card... (of course, in extreme cases, with some heavy PhysX using application may be OK, but that's rare)

And and 1200W PSU won't be enough...

HK-47
Level 10
The AX1200 will be enough power for quad 680's. I am running 3x7970 on it.

7970 TDP = 250 watts
680 TDP = 195 watts

7970x3 = 750 watts
680x4 = 780 watts

You can run 4 cards and still have room for overclocking. Max I have seen my rig pull on the watt meter is 1k watts. The AX1200 has a 90% efficiency @ 50% load and around 88% at full load. So power draw on the DC rail is acutualy lower then the 1k watts my meter was measuring at the plug.
-Desktop-
Asus Crosshair VIII Dark Hero / AMD 5800x / 32GB Corsair Dominator Platinum RBG (CMT32GX4M4C3600C18) @ 3800 /2x Sabrent 1TB Rocket NVMe 4.0 (Raid 0)/ 1x Samsung 860 Evo SSD / Corsair AX1200 PSU / ASUS Strix Helios Case / Corsair HydroX Custom Loop D5, CX7, XG7 420+280 Rad/ Asus Strix 3090 / Asus PG35VQ Ultrawide Monitor / Corsair Commander PRO 3x ql120, 4x ql140 fans / Edifier 1850DB Speakers + T5 Sub /
Asus Theta 7.1 Headset

Zka17
Level 16
HK-47, I have tried and 1200W isn't enough for four GTX680s... if you want to OC, then definitely not...

HK-47
Level 10
I have run 4x 7970 as well my PSU was fine. What issues did you have running 4 680's? The Ax1200 doesn't come with enough cables to run 4x GPU plus the extra PCI-E power connector on the MB. I tried 4x 7970 using the Molex adaptef connectors, that come with the cards and it wouldn't work. Once I got my braided cable set I was able to run 4 7970 using a set of the old cables for one card. I gave my 4th card a 7970 lighting to a friend in the UK or I would post some watt meter videos of it running. I had got the card off a friend that needed cash and thought I could use it to run all my monitors on displayport, but the card was to freaking big and I didn't like how it exhausted heat into my case.
-Desktop-
Asus Crosshair VIII Dark Hero / AMD 5800x / 32GB Corsair Dominator Platinum RBG (CMT32GX4M4C3600C18) @ 3800 /2x Sabrent 1TB Rocket NVMe 4.0 (Raid 0)/ 1x Samsung 860 Evo SSD / Corsair AX1200 PSU / ASUS Strix Helios Case / Corsair HydroX Custom Loop D5, CX7, XG7 420+280 Rad/ Asus Strix 3090 / Asus PG35VQ Ultrawide Monitor / Corsair Commander PRO 3x ql120, 4x ql140 fans / Edifier 1850DB Speakers + T5 Sub /
Asus Theta 7.1 Headset

Zka17
Level 16
Well, let's start with that I have 4x GTX 680 DCII Tops... - they're already factory OC'd, so may need more juice from start...

Then, yes, you need some cable adapters to connect all powers to the mobo and graphics cards...

If you OC both the CPU (I had mine running at 5.2GHz) and graphics cards, then you may get that "driver stopped working" message when you stress the cards (I used only benchmarks, not gaming), but in some situations, the whole system BSOD'd or just simple shut down...

I also have 3x Matrix HD7970 Platinums and there is no way to OC them on a single Sesonic X 1250W...

Hammersdawn
Level 9
Hi,

Running 2x 690's (Quad Config) - Performance is epic, providing the SLI driver support is there for the games you want to play, as not all games support SLI let alone a quad configuration.
Case: NZXT Phantom
MoBo: ASUS Rampage IV Extreme
CPU: Intel Core i7 3930K
CPU Cooler: Corsair H100i
Memory: Corsair Dominator Platinum 16GB(4x4GB) DDR3 2400Mhz
GPU: Quad SLI - 2xASUS nVidia GeForce GTX 690 4GB
SSD1: Samsung 840 Pro 256GB
SSD2: Crucial M4 256GB
SSD3: Crucial C300 256GB
Monitor: Samsung SA950 (1920x1080)