With my G0 I can only get 3200 (@1.25v) stable.

Higher than that and it starts throttling (lowers multi to 6x automatically), even with low temps (using WC, temps are near 48º C full load on all cores at 3200). For example, at 3400 it runs for a minute or so at full speed but when it gets to mid 50's (coretemp & RT) it's starts throttling between multi 6 and 9.

HW used:
- Asus P5K vanilla (vdroop mod)
- 2x 1GB Team Elite DDR2-667
- LC Power 550w GP
- Ninja with TT2 fan (air)
- Eheim 1048 + Thermalright XWB-1 + 240 radiator & noctua NF-S12-1200 + 120 radiator + Scythe 1200