Karadjgne :
So it seems Antec 450s are not much different from the Zalman units. Depending on the exact model, you could get a decent Delta made 450 or a half crap FSP 450. Great. More research to figure out who is what, and what is made by who....
The "VP-something" 450W models sure can get confusing. There's so many of both old and modern units available for purchase with similar names.
I think the
VP450 was the most prominent in various shops and stores, and it's also the oldest one. The review at Hardware Secrets doesn't say much about its actual performance, because they don't show voltage regulation results - they do say the voltages stayed within 3% of the nominal values, but we don't know how much they dropped across the load range - which is also very important.
For example, the +12V could've ranged from 12.35V at low load to 11.70V at 100% load - the deviation would be within 3% as they said, but the drop would be as high as 5.4% (rather extreme, made-up example). Or, it could be very straight and stick to something like 12.33V without dropping much - it's a shame we don't know that for this exact model.
I wish there were crossload results too, but you can imagine how well this kind of a design would handle them.
It's good they posted the ripple results at least - the +12V reaches 75mV, and it can only go up from there as capacitors age.
Xbitlabs tested the PFC version of that (VP450P), and they had problems with minor rails voltage regulation - though the +12V stayed pretty straight if you made sure to load the other rails appropriately.
The ripple is high too (notice how all the values are already reaching the ATX limits), and it will get worse with age too.
There isn't a review for the Delta-made VP450F exactly, but there is one for the VP550F:
http://www.techpowerup.com/reviews/Antec/VP550F/5.html
It doesn't have problems with voltage regulation or load regulation, but crossloads are killing it - look in the ripple and voltage regulation tables. That's only crossload, though - normal loading is very fine. It will also last longer, since Delta as usual used a grab bag of both great and worse capacitors - and even the lower quality ones can last some time, because Delta knows how to appropriately choose them.
The new
VPF450 is naturally the best choice right now though, since it finally uses DC-DC conversion instead of the old group regulation scheme. That's where all the budget units are going - Cooler Master GM series and similar lines started it with roughly affordable prices, and then Antec VPF brought the price for a budget PSU with DC-DC even further down. At least in Europe, because that's where these two lines are targeted - the USA got the CM GM too, but much later and for an absolutely bad price. The american market will get the VPFs though, under the Earthwatts GREEN moniker, which is nice.