I would go for a new PSU if I didn't already have all this $ tied up in Seasonic. Here's my system specs:
AMD64 3200+ 2.0GHz single core
DFI Ultra-D LanParty non-SLI
Seasonic 600w power supply
2 320GB Western Digital hard drives in RAID mirror
ATI x800xl 256MB video card
2GB OCZ 3200 RAM 2x1GB
Antec P180
Linksys 802.11g WiFi PCI card
Well if you have a PSU that is working then you don't need another do you?
Nice setup you have.
Mine are all:
Optron 146 (2Ghz stock, 3Ghz OC on stock volts).
DFI Expert (chipset and HT @ stock volts)
G.Skill USU2-4000-2GBHZ running @ DDR540 (stock volts)
XFX 7900GT
Coolermaster cases
PC 510's for PSU's
Thermalright SI-120 coolers
Silverstone FM-121 fans on coolers and cases.
Everything runs @ stock volts and the cpu's only run 2C over room temps!
I see on the DFI forums people running about the same thing but they all need extra volts and run alot hotter. I am sure that the PSU is the key factor here.
One of the units only has the ram @ DDR520 (260 Mhz).
All the units run on a cpu/ram ratio.
The first one I set up is the one with the slower ram and I never set the HT to get the CPU over 3Ghz (2.95Ghz)as that was good enough for me,and the other 3 I set to the same speed (except a full 3Ghz) from the start although the ram in them hit higher speeds.
I never used all the "fine tuneing" for the ram that the DFI boards afford me ( just the built in MemTest) and with the OC I have so far I am just to lazy to bother.