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Rosewill Stallion Series RD700 700W ATX12V V2.3 SLI Ready CrossFire Ready Power Supply
  • Verified Owner
  • Owned For: 1 day to 1 week

Pros: The PSU OEM is Solytech. This is a pretty decent power supply for the price. I would call it more of a 600W PSU, and I will list why. Even though it doesn't have APFC, at least it isn't half bridge. It uses double forward topology
First off, this thing has beefy primary silicon, good for up to 700W, two 1000µF 200V caps on the primary (voltage doubler, so 500µF usable, good for 700W)
Full input filter
Huge transformer
Very nice fan
Well priced
Good circuit protections

Cons: Inadequate heatsinks
low quality capacitors
Almost inadequate 12V rectifiers

The heatsinks for the silicon are on the small side for a 700W unit, which is why I don't recommend using this unit at full power.
Regarding the 12V rectifiers, it uses two 30A schottky rectifiers in parallel. This doesn't mean they're good for 60A total, as they are just in parallel. I'd guess together they could safely pump out about 50A, which is just below the 56A rating. It would help if they were TO-247 parts instead of TO-220. I'm saying this to be safe, as that heatsink probably gets very toasty around that amperage.

Other Thoughts: @ Anonymous. Don't be a moron. Just because it doesn't have PFC doesn't mean it can't handle fluctuations in the AC. That's what an input filter is for. Ever heard of that? All APFC does is correct the power factor, and make the input auto detecting. This unit has a better than average transient filter, with 4 Y caps, 2 X caps, 2 coils, 2 NTC thermistors in parallel, and 2 MOV's. This is plenty to filter spikes in the mains. And actually, I'll have to respectfully disagree about PFC reducing failure. PFC circuits are more complicated. I've seen many PSU's PFC circuit fail, usually the PFC booster coil shorts which blows the transistors, and then the fuse. If anything, it's more prone to failure. Input side failure is rare in non PFC PSU's, although more of the high quality manufacturers make APFC units. Obviously, there are plenty well made PFC units out there. Here in the US, no sort of PFC is required yet (PPFC or APFC)

This would be a great budget PSU for even a high end system. Just don't expect it to last forever.

COOLMAX CX-400B 400W ATX v2.01 Power Supply
  • Verified Owner
  • Owned For: 1 month to 1 year

2 out of 5 eggs Overrated Junk (275W PSU) 03/17/2014

This review is from: COOLMAX CX-400B 400W ATX v2.01 Power Supply

Pros: Coolmax has been "updating" this model of PSU, but mostly downgrading it further. It does have some pros though...barely.

It uses a nice quality fan, and even though it's wired straight to the 12V all the time (No thermal fan control whatsoever) it stays quiet, and the bearing has plenty of grease so it shouldn't fail.

The older revision of this PSU used the infamous two transistor circuit for the +5VSB, which wasted a lot of electricity and killed lots of motherboards. They updated it with an 8 pin IC to generate the +5VSB which is a lot more efficient and isn't prone to frying your motherboard.

Cons: Everything else... The old revision (Circa 2009) could pump out about 350W, this one is capable of about 275W (With a very mixed rail load).

It claims two 12V rails capable of 348W. HA! It only has one rail, and it uses a 16A ultra fast rectifier. Since the fan runs fast keeping it cool, I bet it could do the full 16A, but that's only 192W...Almost 90% of your computer uses the 12V. That makes this basically a 200W PSU in a modern system. And if you load it up, that 12V rail is going to sag quite a bit...

Other Thoughts: Don't give these guys your money, they don't deserve it.

ePOWER Xtrem EP-350XP-24 350W ATX Power Supply
  • Verified Owner
  • Owned For: 1 month to 1 year

4 out of 5 eggs Great for the price 03/17/2014

This review is from: ePOWER Xtrem EP-350XP-24 350W ATX Power Supply

Pros: This is a great power supply for the money. Trust me when I say it is very overbuilt for a 350W unit. This thing can do 450W in spec before it shuts off. The heatsinks are HUGE, allowing the fan to spin very slowly. This thing is quiet even under heavy load.

Cons: Fuhjyyu capacitors. Not reliable at all, especially with a unit with a slow running fan. Such a shame that they use these horrible capacitors in such a well designed power supply. Otherwise, it's perfect.

Not enough SATA as mentioned, but it's very easy to acquire molex to SATA converters, or just solder more SATA cables to the unit.

Other Thoughts: If you replace the capacitors as I did, it will last until the end of time...


David C.'s Profile

Display Name: David C.

Date Joined: 05/16/13

  • Reviews: 9
  • Helpfulness: 7
  • First Review: 07/07/13
  • Last Review: 04/29/14
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