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SLI Question

Post Date: 2016-11-29
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Spetsnaz View Drop Down
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Posts: 89 		  Quote Spetsnaz Quote  Post ReplyReply bullet Topic: SLI Question
    Posted: 29 Nov 2016 at 11:59am
Hey everyone never done this before so thought I'd come here.

On my old computer I had this GTX980. Link below
http://www.newegg.com/Product/Product.aspx?Item=N82E16814487142



Now I got a new digital storm computer with the following specs:


Chassis Model: Special Deal Hot Seller - Hailstorm II Edition
Exterior Finish: - Standard Factory Finish
Trim Accents: - Standard Factory Finish
Processor: Intel Core i7 6700K 4.0GHz (Codename Skylake) (Unlocked CPU) (Quad Core)
Motherboard: ASUS Z170 PRO GAMING (Intel Z170 Chipset) (Up to 5x PCI-E Devices)
System Memory: 16GB DDR4 3000MHz Corsair Dominator Platinum DHX (Extreme-Performance)
Power Supply: 1000W Corsair HX1000i (Digitally Controlled Power)
Expansion Bay: - No Thanks
Optical Drive: DVD-R/RW/CD-R/RW (DVD Writer 24x / CD-Writer 48x) (Internal)
Storage Set 1: 1x SSD (1TB Samsung 850 PRO)
Storage Set 2: - No Thanks
Storage Set 3: - No Thanks
RAID Config: - No Thanks
RAID Card: - No Thanks
Internet Access: High Speed Network Port (Supports High-Speed Cable / DSL / Network Connections)
Graphics Card(s): 1x GeForce GTX 980 Ti 6GB (VR Ready)
Sound Card: Creative Sound Blaster Z
HPC Processor: - No Thanks
Extreme Cooling: H20: Stage 2: Corsair H115i - 280mm Radiator Liquid CPU Cooler
HydroLux Tubing Style: - Not Applicable, I do not have a custom HydroLux liquid cooling system selected
HydroLux Fluid Color: - Not Applicable, I do not have a custom HydroLux liquid cooling system selected
Cable Management: Premium Cable Management (Strategically Routed & Organized for Airflow)
Chassis Fans: Corsair LED Airflow Performance Edition (Blue) (Up to 6 Fans)
Internal Lighting: - No Thanks
Airflow Control: - No Thanks
Chassis Mods: Fan Blow-Hole: Graphics Card Area Only: Laser Cut and Mount (1x) Side Window 140mm Fan
Noise Reduction: - No Thanks
LaserMark: - No Thanks
CPU Boost: Standard Intel Turbo Boost 2.0 Automatic Overclocking
Graphics Boost: Yes, Overclock the video card(s) as much as possible with complete stability
OS Boost: Yes, Disable and tweak all of the non-crucial services on the operating system
Windows OS: Microsoft Windows 10 Home (64-Bit Edition)




My main question is, is my old GTX980 and the one in this currently built compatible with one another for SLI?

Thanks for any help.
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hoserator View Drop Down
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Posts: 7966 		  Quote hoserator Quote  Post ReplyReply bullet Posted: 29 Nov 2016 at 1:07pm
I believe that they will run in SLI but only as fast as the slower of the cards, in your case, the old GTX 980. But Im%20with%20Stupid.

NOTE: had a virus and delirious, one is GM200, the other GM204.


Edited by hoserator - 02 Dec 2016 at 5:38am
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Spetsnaz View Drop Down
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Posts: 89 		  Quote Spetsnaz Quote  Post ReplyReply bullet Posted: 29 Nov 2016 at 1:18pm
So is it better to have 2 980's running at the speed of the slowest? Or just stay with 1?
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Posts: 7966 		  Quote hoserator Quote  Post ReplyReply bullet Posted: 29 Nov 2016 at 1:46pm
There are way more knowledgeable people that will correct me but the two 980s in SLI are better than only the 980ti alone. That said, some people complain and will not go SLI for its issues. ( I will not touch available power since you have more than enough) I have been running SLI for more than 10 years in different systems and don't mind. It also depends on the games you play and resolution of your gaming monitor, if more than one.  Since you already have them, you could try SLI and single and tell us what you did find. Remember Im%20with%20Stupid.
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Posts: 89 		  Quote Spetsnaz Quote  Post ReplyReply bullet Posted: 29 Nov 2016 at 2:17pm
lol i would but i don't even know how to do SLI..haha
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Meller View Drop Down
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Posts: 1627 		  Quote Meller Quote  Post ReplyReply bullet Posted: 29 Nov 2016 at 2:38pm
I was so thrown off because you said GTX 980 but the link was for a GTX 980 Ti.

You can mix and match different "models" of the GTX 980 Ti into SLI. As long as both video cards are 980 Ti's, it doesn't matter if one is an EVGA FTW and the other is an EVGA CLassified. Or a PNY GTX 980 Ti and an ASUS GTX 980 Ti Strix. All that matters is they are both 980 Ti's.

Now, it won't down clock the faster card to match the speeds of the second card. In fact, if you take two identical cards, leave them at stock, and watch their performance... you'll typically see one card (usually the primary) peak higher than another. But, don't think you can just get away with a sh*tty crad that has trouble overclocking with a godly overclocking card.

Slower cards will bottle neck your faster card. But, no they don't have to be identical. Put your slower card as your secondary, and your faster as your primary. SLI them. Should be good to go. Only time you'll run into issues is when you're ready to start overclocking. You have to overclock fairly. It's complicated to full explain how it works, just know it will work.
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Posts: 1627 		  Quote Meller Quote  Post ReplyReply bullet Posted: 29 Nov 2016 at 2:39pm
To do SLI, put them in the correct pci-e slots on your motherboard, attach SLI bridge. Plug all monitors into the first card (unless you need more than whatever type of port you're using, then work you're way down).

Open nvidia control panel, and enable SLI. It's that easy.
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Posts: 20391 		  Quote bprat22 Quote  Post ReplyReply bullet Posted: 29 Nov 2016 at 2:42pm
Yeah, if it is a gtx 980 in the other rig, then you can't sli with a Ti......different gpu, architecture, etc.

Sli 980 is a lot stronger than single 980 ti.

Pretty much what Meller said.

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Posts: 89 		  Quote Spetsnaz Quote  Post ReplyReply bullet Posted: 29 Nov 2016 at 3:33pm
Sorry for the confusion. They are both TI's. The link I sent was the one I own. So I should in theory be good to go! Thanks. I'll probably blow up my computer.
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Meller View Drop Down
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Posts: 1627 		  Quote Meller Quote  Post ReplyReply bullet Posted: 29 Nov 2016 at 5:04pm
I mean, it won't even blow up. It'll just have some graphical issues which will be very noticeable. You'll be fine.
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Posts: 89 		  Quote Spetsnaz Quote  Post ReplyReply bullet Posted: 03 Dec 2016 at 1:12pm
I should also ask, I had Digital Storm overclock the 980 TI they installed? Will that screw things up if I install an additional 980 TI?
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Posts: 20391 		  Quote bprat22 Quote  Post ReplyReply bullet Posted: 04 Dec 2016 at 11:02am
I'm not 100%, but if they used MSI Afterburner or Precison for the gpu overclock, then adding another card in sli will not erase it, but the second card will drag down the first in clock speed unless you applied the oc to both  cards.  Syncing them in the programs is one way.
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Posts: 89 		  Quote Spetsnaz Quote  Post ReplyReply bullet Posted: 04 Dec 2016 at 1:09pm
in what programs sorry? How do you find out what it is OC'ed to?
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Meller View Drop Down
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Posts: 1627 		  Quote Meller Quote  Post ReplyReply bullet Posted: 04 Dec 2016 at 1:24pm
Listen, unless you're good and comfortable with overclocking, I'd just remove the OC for while. Stock SLI with GPU Boost will give you more benefit than a single card OC.

Overclocking SLI cards is a little more tricky as you have to start balancing your cards. Find the limit of the slowest card then tweak your fastest to work with it. It really isn't that hard, but for people who don't know what they're doing, it can get confusing and frustrating.

When you first turn on your computer and log into your account, there should be some program that launches such as MSI Afterburner, or EVGA Precision. The thing about GPU's is that unless you're using a customer BIOS (which you're not), it won't ever apply an overclock until the OC program is launched. Which is why you set them up to launch on boot/login.

If nothing is automatically launching when you login (Check the tray bar, as it may not actually open up the window, but launch the program still), then the OC isn't applying, which means you're pretty such to simply plug and play... just go into your nvidia control panel to enable SLI.
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Posts: 89 		  Quote Spetsnaz Quote  Post ReplyReply bullet Posted: 04 Dec 2016 at 4:42pm
I think they used GPU Tweaker or something..that's whats on my computer. So how do I reset the 980 TI's OC to default levels so it's on par with the 980 TI I install?
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Posts: 20391 		  Quote bprat22 Quote  Post ReplyReply bullet Posted: 04 Dec 2016 at 5:07pm
I've never used Asus Tweaker, but these programs normally have a box you can uncheck so it doesn't startup on boot. If it's not running then no saved setting is loaded.   Or, a Default setting to click Or just uninstall it in Control Panel , program uninstalls.
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Posts: 89 		  Quote Spetsnaz Quote  Post ReplyReply bullet Posted: 06 Dec 2016 at 12:39pm
Okay thanks, I'll give it a try.
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Meller View Drop Down
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Posts: 1627 		  Quote Meller Quote  Post ReplyReply bullet Posted: 09 Dec 2016 at 12:16pm
Simply don't run the program at the start. If it's GPU Tweak, go into it's preferences to not apply an OC at start up. You can also set it to not run on start up. And bam. You're at BIOS default clocks.
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