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Old 21-01-19, 05:51 PM
WebMaximus WebMaximus is offline
Join Date: May 2012
Posts: 37
So here's a stupid question I'm sure but I just realized my Corsair HX850W which served me well for many years only comes with one 8pin connector for the motherboard while the MSI MEG Z390 ACE takes two.

Does this mean I need to get a new PSU which has 2 8pin connectors?

I read elsewhere someone claiming you don't need that second 8pin connector unless you're going for extreme overclocking.

Not sure what extreme would mean, 7GHz and upwards or even the 5+ GHz I'm hoping for?

The reason I went with the Ace in the first place was I wanted a powerful and high quality motherboard to make sure it wouldn't turn out to be the weakest link in the chain holding me back when trying to achieve a good overclock.

So, for that reason it would feel a bit sad not being able to use its full potential now.


Thanks for any advice.

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Old 21-01-19, 07:22 PM
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A single 8pin should be plenty for the 8086K. The second 8pin is really just meant for very high 9900K overclocks, and for instance (almost?) all reviews use motherboards with a single 8pin for the 8086K.
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Old 21-01-19, 08:31 PM
WebMaximus WebMaximus is offline
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Just checked the manual and it says you need to connect all power connectors to ensure proper operation of the motherboard.

Not to say it wouldn't work with only CPU_PWR1 connected but at the same time as mentioned in my previous post, it would feel a bit sad spending money on this kind of motherboard and then not fully utilize its full potential.

As for the CPU I'm still a bit on the fence. I do want to maximize my chances to achieve a good overclock but at the same time, it would feel better to get the most current generation.

Guess I have to do some more thinking.
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Old 21-01-19, 08:33 PM
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AlienALX AlienALX is online now
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Originally Posted by g0ggles1994 View Post
Oh really?......
To be honest though, I think a lot of people expected that since AMD only showed of an engineering sample at CES and didn't confirm the lineup specs I'd honestly put a Q3 - Q4 release window for Ryzen 3000
To be fair the 2000 series hasn't been around that long yet. So unless it saves AMD money to bash them out so fast (lol) then it would make sense to prolong it a bit longer.
"Those really high 20 series prices are just place holders"

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Old 21-01-19, 10:26 PM
tgrech tgrech is online now
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A single 8-pin EPS connector can supply up to 288W, whereas an 8086K @5Ghz on all cores consumes about 150W, beyond that 5.2Ghz would likely need around 200W and it would scale sharply above that, but beyond 200W's temperature will quickly become the limiting factor to sustained use anyways, if your silicon is even stable at clocks beyond there.

If your motherboard splits the load across the two connectors, you could technically argue that was a better connection as it reduces the per-pin current load, but it's still so far under spec that it's unlikely to have any real world difference so it's not worth replacing a PSU for it or anything.
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Old 22-01-19, 07:34 AM
WebMaximus WebMaximus is offline
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That's great info, many thanks!
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