My Antec NeoPower 480W isn't cutting it... suggestions?

Every web tool I have used to calculate my system's wattage puts me at about 400W but I feel very strongly that my Antec NeoPower 480W is not enough.

The issues I am having with my system are the following:

- Sometimes when I am gaming and my video card changes resolution a lot (both my old card and my new card), my system would reboot after about a dozen resolution changes (normally going from desktop to ingame to desktop to ingame repeatedly). After rebooting, I would be stuck at the 1st BIOS screen and would have to manually reset the system in order for it to boot up.
- My PCI controller card sometimes is not detected when my system boots up and the hard drives connected are not accessible.
- Twice recently one of the hard drives in my system have been 'dropped' by Windows as if the drives were unplugged. Once I reboot the system, they appear again, and Windows tries to scandisk them.

Here are my system specs:

Intel Pentium 4 550 3.4GHz LGA775
Intel D915PBLL Mainboard i915P Chipset
2 x OCZ 1024MB PC2-4300 DDR2
1.44MB Floppy Drive
2 x Maxtor 6B080M0 80GB 7200RPM SATA (on ICH6)
2 x Maxtor 6L250S0 250GB 7200RPM SATA (RAID0 on ICH6)
2 x Maxtor 6Y160M0 160GB 7200RPM SATA (RAID1 on controller card)
LG GSA-4160B 16x DVD+/-RW
ASUS EN6800GT nVidia 6800GT 256MB PCI-E
Promise FastTrak S150 TX2plus PCI SATA RAID Controller
Hauppauge WinTV-PVR 250 PCI TV Tuner
Antec P180 Case
Antec NeoPower 480W
4 x 120mm Case Fan
1 x 80mm Case Fan

I am thinking of upgrading to an Antec TruePower II 550W but looking at the specs there is only 1 more amp on each 12V+ rail and 2 more amps on the 5V+ and 3.3V+ rails.

I would like to get something extremely high end. Any suggestions?

Doesn't matter.

this one

http://www.newegg.com/Product/Prod [...] 6817103941

or

http://www.newegg.com/Product/Prod [...] 6817711001

or

http://www.newegg.com/Product/Prod [...] 6817153021 <--best deal

The Thermaltake PurePower 680W looks nice, but how much better is it?

It's rated at +5V 30A, +3.3V 28A, +12V 14A, 23A, 15A...

While my NeoPower is rated at +5V 38A, +3.3V 30A, +12V 18A, 15A.

Doesn't that make it worse in some ways?

I don't think you could go wrong with either the TT 680W or the FSP Epsilon 600W.

also would like to add that 600 watt PSU can be found from 69$ to 99$ thought it was a nice price , I paid 99 then it went on sale a week later at FRY's just my luck lol.

only with the enermax so far, notice the new Ultra's are not the crappy X-connect ones from the past, I agree they do have issues along with boasting false values. The new non-x-connect are great PSU's

Also they left out the 4pin proc power adapter on the replacement unit they sent me LOL , argh!! oh well the PSU didnt last long anyway. I will give them 1 more chance before I never buy on of thier PSU's again. I think that is fair.

14A on the 12V? WTF mate?

I was thinking more the Enermax Liberty 620W. That's a nice PSU

PSU with best review from TOMS is the Enermax noisetaker 600w. I have the 485W Noisetaker and it is quiet and voltages stay on spec better than any other psu i have owned.