Will a corsair 850 watt power suffice for a gtx 970 sli setup?

[Ibrohimmsry]

I wanted to know if a corsair 850 gold certified power supply will be enough for a gtx 970 sli setup.

 

[clutchc]

More than enough PSU, yes. The 970s are only 145W cards.

 

[Deleted member 217926]

Is it an RM 850? If so avoid it. Corsair uses Chicony Power Technology as the OEM for the RM 750 and RM 850 and they should be avoided.

http://www.hardocp.com/article/2013/11/13/corsair_rm750_750w_power_supply_review/9#.VO-Cfy6rGT0

If it's an HX or AX series it's fine.

Power requirements here:

http://www.realhardtechx.com/index_archivos/Page362.htm

 

[nucolos]

Do you already have that psu? Because if not you could buy a smaller psu but better.

 

[Dunlop0078]

Yes plenty of power but what corsair psu? Some of them are garbage like anort3 said.

 

[Ibrohimmsry]

No it's a ax850 power supply anort3.

Nucolos, yes I bought the power supply about 2 years back. I'm upgrading my whole system in about a month or two so I'm debating if I should keep it or get a newer psu.

 

[Deleted member 217926]

No it's a ax850 power supply anort3.

Nucolos, yes I bought the power supply about 2 years back. I'm upgrading my whole system in about a month or two so I'm debating if I should keep it or get a newer psu.

The AX 850 is as good as anything on the market. You are fine. I wouldn't even think about replacing it until it was 8 or 10 years old and even then with Seasonic build quality it would still most likely be fine.

 

[clutchc]

That's a tier 1 PSU. Good choice.

 

[Ibrohimmsry]

Here's another question totally unrelated but, i have a ASUS PZ68-V PRO/GEN3 Mobo with a i7-2600k @ 4.2 GHz should I just upgrade to a i7-4790k with a GIGABYTE GA-G1.Sniper Z97 Mobo or should I just replace the CPU to the i7-3770k?

 

[clutchc]

As much fun as it is to build new, you won't really be seeing a noticeable performance increase in gaming going from a top of the line Sandy Bridge to a top of the line Haswell. I didn't anyway. Not enough to warrant the cost anyhow. The CPU performance increase isn't really needed in gaming. The SB i7 is already in the top tier for gaming: http://www.tomshardware.com/reviews/gaming-cpu-review-overclock,3106-5.html

 

[Ibrohimmsry]

Is there a noticeable difference between the performance of pci-e 2.0 and pci-e 3.0 for graphics cards like the gtx970 and the gtx980?

 

[Dunlop0078]

Is there a noticeable difference between the performance of pci-e 2.0 and pci-e 3.0 for graphics cards like the gtx970 and the gtx980?

No.

 

[Deleted member 217926]

There is no reason to upgrade from Sandy Bridge unless you just want to do a new build. I thought I'd need to upgrade by now but my 2600K is still an amazing CPU especially overclocked.

There is very little gain from one PCI-E generation to the next. Guru3d just did a great article on it.

http://www.guru3d.com/articles-pages/pci-express-scaling-game-performance-analysis-review,1.html

 

[ccampy]

I'd wait till at least sky lake or probally even the gen after the next die shrink till its worth changing your cpu

 

[Ibrohimmsry]

I'd wait till at least sky lake or probally even the gen after the next die shrink till its worth changing your cpu

I might hold on upgrading my cpu until developers stop creating crappy ports of next-gen games for the pc.

 

[Ibrohimmsry]

There is no reason to upgrade from Sandy Bridge unless you just want to do a new build. I thought I'd need to upgrade by now but my 2600K is still an amazing CPU especially overclocked.

There is very little gain from one PCI-E generation to the next. Guru3d just did a great article on it.

http://www.guru3d.com/articles-pages/pci-express-scaling-game-performance-analysis-review,1.html

I remember reading this article a while back. I was pretty surprised that there wasn't much of a difference between pci-e 2.0 and pci-e 3.0

 

[clutchc]

This article has some good graphs to show the difference in PCIe configurations; both versions and lanes: http://www.pugetsystems.com/labs/articles/Impact-of-PCI-E-Speed-on-Gaming-Performance-518/
Today's cards can't really saturate the bandwidth of even 2.0... yet.