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Is this system capable of running dual graphics cards?

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August 15, 2014 11:07:33 PM

Hello all, long-time PC gamer, first-time poster here.

I built my first gaming PC (as an adult) a few months ago with the help of my brother-in-law. It has the following specs:

i5-4670 3.4GHz CPU
ASRock Z87 Extreme3 mobo
GTX 760 Windforce 2GB
650W PSU
8 GB RAM
500GB HD (will get 120GB Samsung SSD soon)
Zalman 5 fan case
21.5" 1080p single monitor

My initial goal with the system was to get 60fps/1080p with Bioshock Infinite, though I haven't tested it on that specific game yet. The only demanding game I have played so far is Metro 2033, which averaged 40fps throughout with everything on & cranked.

Not bad, but a little less than I expected, and looking forward to 2015 and all the great games on the horizon, I could do with some more power.

So my question is, could my CPU/PSU, etc. handle 2x GTX 760 2GB Windforces?

I don't know a great deal about computers, and I realize that there may be more efficient alternatives to what I am proposing, but they are not an option.

I live in Korea and video cards are considerably more expensive than in Canada, where I'm from. For example, my 2GB Windforce cost 320,000won or about $340CAN/$315US.

Full disclosure, I need to keep this a secret from my wife. She would flip out if she found out that I was planning to add anything to my computer (even though I earn 80% of our income, go figure.) The Windforce is a card I know I can buy locally and pay cash--no data trail.

Also, it seems like it would be the simplest thing to install.

Thanks all.

a b U Graphics card
August 15, 2014 11:15:20 PM

You can only handle it if you get a more Wattage PSU other than that the build is completely fine.
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a b U Graphics card
August 15, 2014 11:16:22 PM

Could you list the brand of PSU or link. You're Motherboard is capable of running two GPUs, and you're CPU is great. But for SLI GTX 760 a 700w PSU is recommended, also the GPUs require two 8 pin + two 6 pin connectors. Also Metro 2033 is one of the hardest games to run, it give my Crossfire HD 7950s a run for their money, but you won't see a lot of games as demanding as that. The only I can think of are Metro LL, Far Cry 3, and The Witcher 2.
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August 16, 2014 7:24:05 AM

Steel_Nugget said:
Could you list the brand of PSU or link. You're Motherboard is capable of running two GPUs, and you're CPU is great. But for SLI GTX 760 a 700w PSU is recommended, also the GPUs require two 8 pin + two 6 pin connectors. Also Metro 2033 is one of the hardest games to run, it give my Crossfire HD 7950s a run for their money, but you won't see a lot of games as demanding as that. The only I can think of are Metro LL, Far Cry 3, and The Witcher 2.


Oh, short by 50W, eh? The PSU is a Powerex Blackhawk (Korean brand):

http://item2.gmarket.co.kr/English/detailview/item.aspx...

Most of that is in Korean, but if you scroll down there are full specs in English.

Farther down it says it's got PCI-E x 4 and in brackets 8 (6+2)..something something Crossfire, so I think that's good?

Thanks a lot for the info!

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August 16, 2014 7:26:33 AM

TopLuca said:
You can only handle it if you get a more Wattage PSU other than that the build is completely fine.


Good to know, thanks!
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a b U Graphics card
August 16, 2014 9:19:55 AM

http://www.guru3d.com/articles_pages/geforce_gtx_760_sl... Here is where I got the info on the power. Also if you want (Since every article I've seen I can't read) you can see the reliability of the PSU, and see reviews on them. If the PSU is Tier 1 it should be fine even if it is only 650w.
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August 16, 2014 6:33:55 PM

Hm, so dual cards look to be very power hungry. I guess that makes sense.

In light of this new information, I'm going to contradict my original post a bit and ask:

Would a single GTX 780 (provided I am able to find one) be better?
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a b U Graphics card
August 16, 2014 8:22:25 PM

CK7 said:
Hm, so dual cards look to be very power hungry. I guess that makes sense.

In light of this new information, I'm going to contradict my original post a bit and ask:

Would a single GTX 780 (provided I am able to find one) be better?
http://www.ocaholic.ch/modules/smartsection/item.php?it... SLI GTX 760 would be faster then a GTX 780, but a GTX 780 will be faster then a single GTX 760. https://www.youtube.com/watch?v=BfMYb1Jk0FU This show the gap between GTX 760 and GTX 780. (GTX 760 is a few frames slower then a GTX 670)

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a b U Graphics card
August 16, 2014 8:24:36 PM

Also, I'm not sure about in you're country but here in the US a R9 290 is cheaper than a GTX 780 while they perform very close. https://www.youtube.com/watch?v=06VeQNQpLiQ So check the prices in Korea.
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August 16, 2014 10:09:27 PM

Ok, thanks for all the help, Steel.
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a b U Graphics card
August 16, 2014 10:12:44 PM

CK7 said:
Ok, thanks for all the help, Steel.
Np. May I ask what you decided on?

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August 16, 2014 10:21:59 PM

I looked up the R9 290, and it is indeed over $150 cheaper than the 780, and less than half the price of the 780Ti. Further research is in order.

I think, for the time being, my single 760 will be fine for 90% of the games I want to play.

I'll wait and save up some more cash, and then splurge on one very powerful GPU, the best one my CPU & PSU can handle.

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a b U Graphics card
August 16, 2014 10:50:24 PM

Okay, have fun.
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!