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What power Supply to get??

C

Csst

Member
Ok i have all my parts gathered and need 1 last part before i can put this bad boy together.. I have a QX6850 and 2 8800 Ultra overclock cards and just got my ASUS Striker Extreme LGA 775 NVIDIA just need to know what the best PS i should get for this RIG? Any help would be great..

Thanks
Csst
 
Sure, there are better PSU's out there, although that PC&P is pretty darn good 😛

I'd simpy look here: http://www.jonnyguru.net/forums/showthread.php?t=103

Looks like you either want a: Etasis ET-750 or ET-850 or a Silverstone ST75ZF. If those are to costly, then you can always pick a tier 2 product. For what you have, I'd want at least 700w, 1k is prolly overkill though. Personaly I think I would look into the enermax infinity or galaxy, since they seem to be pretty quiet. If you don't give a dime about your PSU being quiet, then the tier 1 PSU's will be awesome. They will be as reliable as they can possibly get. Or perhaps a thermaltake toughpower 1000w, 5 years of warranty is always nice.

The list there is great though, written by jonnyguru himself. Doesn't get any better then that. And all the psu's he mentioned are at least decent, no crappy powersupplies are mentioned.
 
Highest efficiency is typically 50 to 60% of a PSU's max load it seems. I'd figure out the max usage of your rig and get a PSU that's no more than double the max requirement.
 
Can't go wrong with either corsair or PC Power & Cooling, so I can't argue with either of those choices. They're both great power supplies. OCZ, Silverstone, Seasonic and Tagan are also great brands to choose from.
 
Its seems i might pick the New Silencer 750 Quad Power Supply i should be ok with this one don't you think?
 
Toadster, why does it crack you up? It seems to me logic would take over and you would see that not all the connectors get used by allot of people so there would be these copper pipelines hanging in the case or tied up looking like a python or something. I myself have a Hiper and 4 SATA drives, 2 SATA Optical's, so what would I do with all those extra wires? In my case my PS is modular and I just didn't plug in the other cables so it looks clean and I don't get my hand tangled up when messing around in the case. Thanks, JAS
 
Originally posted by: HOOfan 1
I would get the PC Power and Cooling Silencer 750
Click to expand...

I have now owned 2 of these and they are not only dead silent, but I have NEVER had any problems w/ them whatsoever. A PSU is one of the most important parts of a build and should never be an after thought, but once installed, you should never have to concern yourself w/ it ever again. And that is exactly the case w/ that PSU.
 
I would recommend any quality ps with enough amps on the 12v rail(s) to give you head room with what you intend to use. I personally use enermax ps's in all of my machines and I use a galaxy 850w in this machine which gives me tons of headroom for later use.
 
Originally posted by: jonmcc33
Can't stand 80mm fans. I suggest a Corsair HX620.
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taken from PC P&C myths page

6. SHOULD AN ATX POWER SUPPLY BE COOLED WITH A 120MM FAN?
Most low-noise ATX power supplies today utilize a top-mounted 120mm fan rather than a rear-mounted 80mm fan. The 120?s favorable reputation is based on the fact that under low to medium load conditions, the 120mm fan provides sufficient cooling at low RPM and low RPM fans are generally very quiet.

However, problems occur with this design when the load exceeds 50%-60%. Because the 120mm fan consumes about 1.5? of vertical space inside the PSU, heat sinks, capacitors, and other components are about 30% smaller in height compared to a PSU with a rear-mounted fan. The smaller parts can handle less current, so the maximum power available with the 120mm design is limited. And, because the heat sinks have less surface area, more air flow is needed with this design to keep the thermal situation under control. With 80%-100% load, the 120?s fan speed can double and the noise level can jump by up to 20dB.

In conclusion, for systems that require more than 50% of the power supply?s capacity, a well-engineered PSU with a rear-mounted 80mm fan will provide superior performance and reliability (due to larger components) at a noise level comparable to a PSU equipped with a 120mm fan.





I chose a 620HX to power a E6600 OC 3.83Ghz, 4gig Ram, 2x 8800GTX OC, 4 HDD, 7 Fans, 1 Pump, DvD writer because of all the great reviews I received. It was rock solid and while the computer was idling very quiet but when loaded it was very loud, I switched it a Silencer 750w and it is a little louder at idle but it is much quieter at load.

I would recommend the corsair to anyone SLI 8800GT but when you use 2 power hungry GPUs you can't go wrong with the Silencer, it is much better at handling higher loads.

 
That pc power and cooling myth sounds like pure bs to me because of one thing, most power supplies do NOT use the entire height of the psu. Seasonic power supplies are known to be pretty small and efficient, unless it's a very high wattage psu, you do not need the extra height at all. 120mm psu's are great and much quieter than 80mm at higher loads. There's no reason to avoid them.
 
Originally posted by: tomoyo
That pc power and cooling myth sounds like pure bs to me...
Click to expand...

It is. Like most of the myths, it's based on old ideas and is addressing a crowd that once knew very little about how a PSU works.

I will say that 80MM fans will cool better.

A good example of this would be this Rosewill that came both ways: http://www.jonnyguru.com/review_details.php?id=122

But that doesn't mean that 120MM and larger fans do not cool adequately. The heatsinks don't have to be tall, just wide. And with more efficient designs, less airflow is required because components aren't getting as hot.
 
Does anyone know anything about the XION Supernove EPS 800W (Modular) Power Supply? Is it any good? Does it really get "up to 85%" efficiency?

I'm looking for something that's no more than $140-$150 US and that's with shipping.
 
Originally posted by: LT4CAMSS
Does anyone know anything about the XION Supernove EPS 800W (Modular) Power Supply? Is it any good? Does it really get "up to 85%" efficiency?

I'm looking for something that's no more than $140-$150 US and that's with shipping.
Click to expand...

No!!!! The 115/230V input selector switch is a big give away that there's phoney baloney here.

I don't know who the OEM is, but anything over 550W that doesn't have active PFC usually has something funny going on. It's NOT independent regulated and I seriously doubt it's 80% efficient... never mind 85%.

 
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