Weird? PSU maybe?

[Ku-sama]

i can bring my stuff to this:

DDR333 (droped from 400) at 375MHz
PCI Locked
PCI-E Locked
FSB at 242 (2,420MHz HTT)
2.4GHz at 2.904GHz


Videocard at 500MHz//1.20GHz (stock 485MHz//1.10GHz)

if i push my videocard any higher, my system locks up with great temps (about 88F). now, if i back off on the CPU to about 2.6GHz i can raise the Videocard to about 522MHz//1.24GHz stable (anything farther and my system locks up with no artifacting at all! what could it be?

 

[Geoff]

I had a similar problem today, if i overclock my cpu to 2.5-2.6Ghz, then when i run 3DMark i get artifacts, even when the gpu is at stock. But when i downclock it to 2.2Ghz i can overclock the gpu and its fine.

And the HTT isnt suppose to run higher than 1000Mhz, so you should put your HTT at 4X, that way it will only be at 968Mhz. If you go higher than 1000Mhz then you can easily get instability issues.