- Joined
- Oct 24, 2010
- Location
- South Africa
Hi all,
This past weekend I decided to try get my Phenom II x2 550 (3.1GHz stock) to hit 4.0GHz on air.
Ill quickly list my hardware for you guys:
mobo : MSI 785gtm-e45*
CPU : AMD Phemon II X2 550 BE
GPU : ASUS HD4850
Ram : kingston DDR2 800 2x2gig
PSU : 600w
Well I started off after a couple weeks of reading the OCF for info on overclocking the Phenom II. I of course read “DOLK’s Guide” thoroughly. Which was very useful.
I first went about finding my max FSB which was 255 and my max stable multi was 19.0 but 19.5 with minor stability issues, both of course on stock voltages.
I started my testing with: FSB set at 200 MHz and CPU multi set to15.5 (Stock). I then proceeded to up the multi by initially 1.0 until I reached 17.5 and from there on continued by 0.5 increments. I found out at stock voltages my max OC is 3.8 GHz when testing with Prime95. I did however up it to 3.9GHz and though Prime95 crashed at around the 15min mark.
I upped my CPU-NB to 2.4GHz, but still no improvement.
Now knowing I needed to up the CPU voltage a little I went to the bios and found out, there wasn’t even the option for CPU voltage adjustment on my board. So I searched the net and found a bios update/revision that added that option in to the bios. So I then flashed my bios to the new v8.6 and began to slowly adjust the voltage in my bios. It started at 1.384volts so I slowly upped it to gradually while testing up until 1.55 volts. I thought that this would help. And so after my whole Sunday of overclocking, I glimpsed at my voltage in CPU-Z and it stilled showed 1.384volts. So I thought maybe its got to do with the new bios, so I downloaded the new CPU-Z and it still showed the voltage to be 1.384volts. So I checked my bios and it shows 1.55volts.
Now being a little confused by this I jumped onto the laptop and searched the net for answers. I came across one post where a guy linked to a Taiwanese website in which he said that the motherboard needs to have a resistor in order to be able to adjust the voltages. So there goes my dream of hitting 4.0 GHz.
So has anyone else managed to adjust the CPU voltages on the 785gtm-e45? Or am I just missing some crucial step here?
Thanks
Garth
This past weekend I decided to try get my Phenom II x2 550 (3.1GHz stock) to hit 4.0GHz on air.
Ill quickly list my hardware for you guys:
mobo : MSI 785gtm-e45*
CPU : AMD Phemon II X2 550 BE
GPU : ASUS HD4850
Ram : kingston DDR2 800 2x2gig
PSU : 600w
Well I started off after a couple weeks of reading the OCF for info on overclocking the Phenom II. I of course read “DOLK’s Guide” thoroughly. Which was very useful.
I first went about finding my max FSB which was 255 and my max stable multi was 19.0 but 19.5 with minor stability issues, both of course on stock voltages.
I started my testing with: FSB set at 200 MHz and CPU multi set to15.5 (Stock). I then proceeded to up the multi by initially 1.0 until I reached 17.5 and from there on continued by 0.5 increments. I found out at stock voltages my max OC is 3.8 GHz when testing with Prime95. I did however up it to 3.9GHz and though Prime95 crashed at around the 15min mark.
I upped my CPU-NB to 2.4GHz, but still no improvement.
Now knowing I needed to up the CPU voltage a little I went to the bios and found out, there wasn’t even the option for CPU voltage adjustment on my board. So I searched the net and found a bios update/revision that added that option in to the bios. So I then flashed my bios to the new v8.6 and began to slowly adjust the voltage in my bios. It started at 1.384volts so I slowly upped it to gradually while testing up until 1.55 volts. I thought that this would help. And so after my whole Sunday of overclocking, I glimpsed at my voltage in CPU-Z and it stilled showed 1.384volts. So I thought maybe its got to do with the new bios, so I downloaded the new CPU-Z and it still showed the voltage to be 1.384volts. So I checked my bios and it shows 1.55volts.
Now being a little confused by this I jumped onto the laptop and searched the net for answers. I came across one post where a guy linked to a Taiwanese website in which he said that the motherboard needs to have a resistor in order to be able to adjust the voltages. So there goes my dream of hitting 4.0 GHz.
So has anyone else managed to adjust the CPU voltages on the 785gtm-e45? Or am I just missing some crucial step here?
Thanks
Garth