OK here's the story....I spent weeks planning my system before I built it - a modest system I thought, and I wouldnt really mess around much with that overclocking stuff, most of all quiet. I decided all the parts and slowly went round picking them up at the best price I could find. The last thing i picked up was the CPU. My plan was to get an E6600....but enticed by the dramatic price reduction I happily skipped home with an Q6600 in my bag.
I didnt bother to re-evalaute everything else on the basis of the change of CPU, I just put it all together. It worked great. I did a modest overclock - it worked great. It did a bigger overclock. It worked great. then one day strange noises began to come out of my psu under load. I made some enquiries about it and got lots of advice. A couple of people told me that my CPU was underpowered. I did an online powercheck and it seems that I have put a morris minor engine into a double decker bus! Hence it is now struggling under load and making strange high-pitched noises - I think this may be the reason anyway.
Therefore I realise that I need to get a new psu pretty sharpish. This is the entire system breakdown - what do you guys reckon I need in terms of power:
Q6600 (GO) - overclocked to 3.2Ghz @ 1.4v
2 RAM sticks (1GB x 2) DDR2 800 RAM (1.95v)
Asus EN8600GT silent (passive - no fan)
Samsung HD501LJ SATA HD (500GB) x 1
Asus DVD RW
2 x 120cm fans (1600RPM - currently 1100RPM)
1 x 100cm fan (1500RPM - currently 1100RPM)
Antec spot fan (2200RPM currently 1300RPM)
scythe Karmameter fan controller
floppy drive with card reader
Antec P150 case
currently this is running using an Antec Neo430 watt PSU (and doing quiet well considering!). Obviously I've now set it back to stock speeds.
I'm now looking at 620-650 watt PSUs and basically shortlisted 3:
Enermax Liberty 620watt (The CF favourite)
Enermax Infiniti 650 watt
Corsair CMPSU 620HX (620 watt) - here its actually the 620HXJP - any idea what the difference is?
My questions are this:
1. 620-650 watts - enough? too much? too little?
2. Which is best for reliability and quietness? (The rest of the comp is pretty silent now - only 2 fans needed for autumn/winter/spring and both running undervolted and quiet - would like to maintain this. The NEO430 is very quiet so want the new PSU to be also).
3. Is it likely that I have done irreparable damage to my existing psu? (works fine apart from the high pitched noise under load). Should I try and RMA it? (oh dear, I'm not sure what could have happened to it Mr Antec)
My favourite is the corsair - has excellent reviews and seems extremely quiet - near the top of the silent reviews forum recommended list to. I can pick one up for just slightly more than the Enermax, so prices pretty similar.
What do you guys think?