Hello together.
My Phenom II 720 is running at 3600 mhz (18x200) with a Northbridge frequenqy of 2400. That's the limit I've found for the Cpu (at 1.5 Vcore).
It is stable for 7hours of prime 95 small ffts (maybe even longer but I stopped after).
While overclocking I had my ram "underclocked" to 800 mhz. It's stock frequency would be ddr3-1333.
I've increased the Ram speed again and the system lost stability (only 10 min prime 95 blend test).
The strange thing is that when the processor runs at stock speed (but still 2400 nb) it is stable so the ram shouldn't be the problem right?
What should I do to make my system stable at ddr3-1333 (even ddr3-1066 isn't stable when overclocked)? I've even increased Ram voltage by 0.2V but it wouldn't help.
Another problem that I have is that the Motherboard (Gigagyte ga-ma790fxt-ud5p) doesn't allow me to increase the v-core by more then 0.6 V but I need to increase it to 1.5 so that I wont need Amd overdrive anymore. Anyone knows a solution for that problem?
My ram: http://www.newegg.com/Product/Product.aspx?Item=N82E16820145251
Psu: corsait tx 650
Cpu cooler: xigmatek hdt-s 1283
I was already utterly disapointed that the Cpu wouldn't overclock further then 3600 herz I even needed to Use Acc(0,0,+2 to even get 3600 stable but now even this overclock starts to make truble.
PLEASE help me. The System I've built is the project for my final school "paper", I have to get good results.
Kind regards Erdinger
Ps: if you need anymore information don't hesitate to ask
My Phenom II 720 is running at 3600 mhz (18x200) with a Northbridge frequenqy of 2400. That's the limit I've found for the Cpu (at 1.5 Vcore).
It is stable for 7hours of prime 95 small ffts (maybe even longer but I stopped after).
While overclocking I had my ram "underclocked" to 800 mhz. It's stock frequency would be ddr3-1333.
I've increased the Ram speed again and the system lost stability (only 10 min prime 95 blend test).
The strange thing is that when the processor runs at stock speed (but still 2400 nb) it is stable so the ram shouldn't be the problem right?
What should I do to make my system stable at ddr3-1333 (even ddr3-1066 isn't stable when overclocked)? I've even increased Ram voltage by 0.2V but it wouldn't help.
Another problem that I have is that the Motherboard (Gigagyte ga-ma790fxt-ud5p) doesn't allow me to increase the v-core by more then 0.6 V but I need to increase it to 1.5 so that I wont need Amd overdrive anymore. Anyone knows a solution for that problem?
My ram: http://www.newegg.com/Product/Product.aspx?Item=N82E16820145251
Psu: corsait tx 650
Cpu cooler: xigmatek hdt-s 1283
I was already utterly disapointed that the Cpu wouldn't overclock further then 3600 herz I even needed to Use Acc(0,0,+2 to even get 3600 stable but now even this overclock starts to make truble.
PLEASE help me. The System I've built is the project for my final school "paper", I have to get good results.
Kind regards Erdinger
Ps: if you need anymore information don't hesitate to ask