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620hx vs OP650

K

Kett

Gawd
Joined
May 3, 2007
Messages
537
Im looking at getting either the Corsair 620HX or the Silverstone OP650 PSU's for my new build. Any opinions?

I would like to get the cleanest ripple possible, but reviews have given them both fantastic marks for that. Modular is a bonus, but I would sacrifice it for a decent performance gain.

Price after shipping, rebates, etc for both would be about $130.
 
Get the Corsair, i got one and cant stress it enough, the rails are plain rock solid :D
 
I say the OP 650. It's got a couple more amps, is a bit cheaper, but not modular.
 
+1 for the Corsair.

Yes it does have an 8 pin. :)

Modular cables are pretty darn handy.
 
Thanks fellas. I ended up going with the 620hx; mostly because they were the same price and since people dont seem to really see much difference between them performance wise, I grabbed the 620 for the efficiency + modular cables and the 5 year warranty. Also I have heard a few random complaints of the op650 making buzzing noises, though it probably wouldnt be an issue.

Close though. Almost got the OP650 just cause the internals look cooler :p
 
Well I would of gotten the OP 650W just because it was a SINGLE +12V with 54A meaning all the amps can go to all the components as opposed to rails losing amps if they are not used on multiple rail PSU's

but both units are great PSU's
 
BTK17 said:
Well I would of gotten the OP 650W just because it was a SINGLE +12V with 54A meaning all the amps can go to all the components as opposed to rails losing amps if they are not used on multiple rail PSU's

but both units are great PSU's
Click to expand...

The Corsair PSU is effectively a single-rail PSU, as the "rails" don't have separate OCP points.

Also, to the original poster, thanks for buying Corsair.
 
Redbeard said:
The Corsair PSU is effectively a single-rail PSU, as the "rails" don't have separate OCP points.

Also, to the original poster, thanks for buying Corsair.
Click to expand...

If they dont have separate OCP points why is it still listed as a multi-railed PSU?
 
Godmachine said:
If they dont have separate OCP points why is it still listed as a multi-railed PSU?
Click to expand...

Because when we spec'd it originally and ordered the boxes and stickers, the ATX spec limited you to a max of 20A per rail. As we were developing it, the newer revision of the ATX spec came out that allowed unlimited amps per rail, so we removed the OCP point on the individual rails and added a larger OCP point for the entire +12V line.

Effectively it is one large rail with separate physical pathways through the circuit boards in order to prevent excessive resistance and thus heat in any one region.

It sounds ridiculous, but to be honest ordering new boxes and stickers and changing all the marketing materials would have cost a lot of money, so we're just keeping it spec'd as it is now, but basically it was designed once as a 3-rail PSU and now it's effectively a single-rail PSU with different physical pathways that can each provide up to the max amperage of the 12V independent of another.

So if you need 40A on one and 4A on another and 6A on the third it will work. Not that you'd ever use 50A on the 12V yet.

Well, if you had a load of HDDs and a few 2900XTs and a couple of quad cores overclocked...
 
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