Coolermaster Masterwatt Lite 600W 230V Review

[Rexper]

Usually you just have to correct for efficiency at the usual working temperature. I'd say it's fair to assume 85% at steady state so ~2.4A. Should hold at 230V, although near the operating limit. Regular dips below 210V might be an issue in terms of longevity.

Wouldnt 2.6A (600w @230V) derate the lifespan of the bridgerectifier, as it’s above the 2.4A?

[ehume]

I guess this is what QC is for: the ODM sends the OEM something they say represents the product they are shipping that bears the OEM's name. But in fact, the ODM is shipping an inferior product. Only going to a retailer to buy a for-sale unit will tell the OEM what the customers are getting. Hence the need for QC: someone who gets on-the-shelf products from the retailer.

[McSteel]

Wouldnt 2.6A (600w @230V) derate the lifespan of the bridgerectifier, as it’s above the 2.4A?

Actually that was a brain fart on my end... If the rated rectified current is 2.85A, the input should be able to take ~3.35A. It doesn't actually matter, tho, as the output is the relevant metric.

[Joel Dash Reed]

Ugh, I can't believe I dodged a bullet, even if I have the US, Full Range, Version of that PSU (MPX-6001-ACAAW). =_=

[Elledan]

This PSU reminds me of why I'm glad that it isn't 15 years ago any more. Also why I have never bought a CM PSU or recommended one to people.

Does limiting the input to 230VAC really save that much in terms of cost compared to full-range when one already has APFC? Looking at the guts of this PSU I cannot really see any obvious savings.

[awesomegamer919]

This PSU reminds me of why I'm glad that it isn't 15 years ago any more. Also why I have never bought a CM PSU or recommended one to people.

Does limiting the input to 230VAC really save that much in terms of cost compared to full-range when one already has APFC? Looking at the guts of this PSU I cannot really see any obvious savings.

The GBU606 Bridge Rectifier would not handle 110V without a serious heatsink, if even then. It's also easier to hit 80+ 230V levels than 80+ Universal levels

[mariush]

A lot of you guys seem to forget that at such high output power, the fan will also blow a lot of air down onto the pcb and bridge rectifier.

I assume the measurements in datasheets are done assuming natural convection, but don't include a bunch of CFM (or whatever unit) of air moving around the rectifier helping a bit with the cooling.

Anyway, still they cheaped out on a few cents, could have used a 8A or 10A part.

[Elledan]

The GBU606 Bridge Rectifier would not handle 110V without a serious heatsink, if even then. It's also easier to hit 80+ 230V levels than 80+ Universal levels

Sounds like I have some reading up to do on that aspect of SMPS design

[Raven Rampkin]

Yeah, and I feel guilty about almost recommending this unit to Joel.
That is some POOR performance. Even full range, modularity, sleeving and detachable/no Berg wouldn't help raise the score much.

[Joel Dash Reed]

Yeah, and I feel guilty about almost recommending this unit to Joel.

Awww, no biggie Raven, in the end we saw it coming. On the bright side, now I have a PSU that I will use only for test components for future builds (Test they even work.), or even just to fill the custom loop I'm planning to buy for my main rig; not as a main PSU.