Originally Posted by KingT
you're really looking after our interests..
Now what's up wit that "
No-name brand PSUs vs Known Brands: MAD testing
From this link: http://www.madshrimps.be/articles/ar...#ixzz1JOhu1Oxf
that you have posted on Tom's forum..
Do you really buy that CM Real Power M620 delivered 850W and 57A on 12V+ rails w/ 76% efficiency without burning down or overheating..
I was there when we tested those PSUs, there was no special treatment for the CM products, they just remained running when pushing beyond the limit and the limit reached was when the PSU auto-shutdown. The increase of the different voltlines was the same between PSUs tested. In ideal situation your PSU can go higher than rated for a short period, and auto-shutdown when there's risk over overheating/instability.
any brand PSU will feature such a security and build-in overhead, after all a proper PSU is rated at higher ambient temps and 100% 24/7 runtime. being able to run a 620 CM PSU at 850W for a short time doesn't mean it won't fail when you leave it running a few hours. We didn't have this time to find out, and honestly see the overloading test as a way to find out how the PSU behaves when pushed beyond rated spec.
Of the two budget PSU:
- cheapest one didn't even reach rated wattage and broke down at <400W , even after 5min, while it's rated at 450W. burned smell and good for the trashcan
- the SweeX 650W auto-shutoff at 550W load; it still worked after a system reset but never managed to reach its rated speed.
at CM labs we get a PC with a nice excel sheet to work with and adjust the voltages according, our guy (Geoffrey) does know a bit about PSU to not randomly test some imaginary scenario's. CM staff is helpful and in no way pushing their products to be tested differently.
latest article @ CM labs as Corsair vs CM unit with a very close outcome.
if CM wanted to "cheat" the tests, they would be outshining any competitor tested at their labs, as you can see from the link above, that's simply not the case.Edited by jmke - 4/13/11 at 12:41pm