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post #1311 of 6753
As always thank you Tator.
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post #1312 of 6753
No problem. I forgot to add a review for the Lepa; it's the same as the Enermax Naxn 82+ 850w as well. HardOCP did a review of the unit, and it's as they say, the XFX Core 850w & Corsair TX850v2 are "Better" units electrically. This one will hold up to any long, 24/7 abuse.
At $100, it's hard to beat in the price per watt category.

The XFX Core PRO850 is $106 shipped after rebate though. So I'd recommend that guy instead now. You'll need to use more adapters for it. Though it'll do the same job, just better.
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post #1313 of 6753
Right on Man...

I got to looking at the OCZ ZX1250 last night

Is that thing ever bit as good as it appears?
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post #1314 of 6753
Yes, it's just ever so slightly behind the Antec HCP-1200 and Corsair AX-1200 in terms of Vreg but comes close to matching them in ripple suppression. (Review) Though, the ZX Series and the Sparkle Gold Class 1250w develop a squeel around 80% load that's rather audible and even annoying.

Though, if you want a beast among beasts; Rosewill Lightning Series 1300w, it's internally the the same as the Super Flower Golden Green 1300w and is just a champion.

The Silverstone Strider Gold 1200w is slightly better than the OCZ ZX 1250, though it costs a bit more over here in comparison.

Though, just under the gold market is the TPQ-1200 which can have a loud fan in a 40*C environment. Though is definitely a solid vale at $220
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post #1315 of 6753
Man you are on it. I'll try to get the best deal on one of those that I can at my favorite on line used parts depot "rhymes w/fless in the Bay". I'd prefer Antec or Corsair for obviouse warranty reasons.

Thanks a bunch Tator. I think I"m going to try and get the biggest/best bang my buck can afford. I may have to sacrafice & sell some of my other unused atm hardware to get the bigger PSU.

Just p/u 5x ASUS GTX 460 TOP CU 768 and they all work as expected while folding at 865/1730/1840
Edited by N2Gaming - 7/10/11 at 10:34am
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post #1316 of 6753
Silverstone Strider 1500w is another solid option; though finding one used (let alone below $300) will be hard.
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post #1317 of 6753
I hear the bigger they are the harder they melt down a system.

Is there any truth to that.
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post #1318 of 6753
Quote:
Originally Posted by N2Gaming View Post
I hear the bigger they are the harder they melt down a system.

Is there any truth to that.
Well it depends on what happens.

There's some truth to this, and this is one point where "MSI Got it right" (and yes, I die a little inside when I say that.)

Some of the high end MSI motherboards feature a PCIe 6pin Connector that adds power to the PCIe slots to aid the ATX 24pin connector, which is supposed to supply 75w to every physical PCIe x16 slot through 3, 12v wire.
(If you know even basic electrical principle, this is a bad idea when you have 3 or more PCIe x16 slots.)

Some motherboards add a molex connector to the equasion which is supposed to help; though that's only 1 additional 12v source.

Though, the issue that occurs can be stopped by a PSU that has many "virtual" rails (As defined by OCP Circuits.)
As the OCP would trip, preventing any damage.

This may make it a bit hard to load balance depending on the application, but it can be done.

The Strider 1500w does have OCP. So it would be a safe option.

EVGA has had this problem, and offers a sorta..DIY solution to it. Which if you added this, and used the molex connector present on a motherboard; then you'd only be adding in 1 more 12v source, unless you used 2 different molex cables.


Though; this is not to say Single Rail units are un-safe, it's just that multiple rail units are more safe.

The Antec TPQ-1200 & HCP-1200 also have OCP and should be fine. Though, the OCP trip points are at 50A on each unit. Which is a little high for my tastes, testing has shown that above 40A and it's generally useless and 36A is "safe-limits." Though, no official or proper testing has been done on this.

The Silverstone STrider 1500w has it set at 25A which is perfectly safe.

The Sparkle Gold Class 1250w features these "virtual" 12v rails, though no defined OCP Set point.

The Enermax MAXREVO 1350w does as well, with OCP Set points at 30A.
The Enermax S-Galaxy EVO 1250w does as well, with OCP set at 30A.

Like I said; it's not really a huge issue (as most of the time, it melts the motherboard power connector but doesn't damage components beyond that.)
With patience and some solder skill you could potentially fix that issue.

There's also the Kingwin Mach 1 1220w which has it set at 35A and another solid option.
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post #1319 of 6753
WOW,

The more I ask the more I realize how much I don't know.

All things to consider from your points listed above would be.

1. Multiple virtual rails is generally safer " not better " than a single rail PSU when it comes to system safety.

2. The lower the OCP amp trip setting the safter the PSU.

3. The The Silverstone STrider 1500w will be nearly impossible to get used at a fairly decent price.

4. I could get by using a decent 850w PSU for 4x 460's

5. You are the man.

6. I need to lear a heck of a lot more about PSU's
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post #1320 of 6753
Trust me, I'm smart when it comes to the topic. I know a great deal more than the average bear, but I can't even compare to some of those with Electrical Engineer degrees when it comes down to the topologies, design, and their impacts.
Even some of that stuff makes me go "HOLD UP! SLOW DOWN! STUPID PERSON IN THE ROOM!"

Yes, you got it right for the most part.

Multi-rail PSU's that feature OCP set at 35A or so, should be safe.

Antec says that 20A is the "perfect" zone, though; unless you have some serious rail distribution, you'll probably hit a trip point with a high work load like F@H.

Makalu @ JonnyGuru did some testing, and about 32.5A through a single 18AWG wire caused it to over-heat and melt. Though this was some basic testing, not the most scientific but a good basis to work off of.

Antec's 50A OCP should be safe (as on a PCIe connector, that's 16.66r Amps per "hot" wire.)
Though, I would feel better about it, if the set-point was at 40A instead.

Personally, I run a "single rail" unit, and I'm not that worried about it. Though, if I had the choice between a Multi-Rail unit and a Single rail unit of equal caliber; I"d choose the multi rail one.
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