X2 550 Unlocking & Overclocking Consolidated

[gOtVoltage]

Cheers, I was just looking for that Luckily mine runs at 1.35v as standard but i wanted to make 100% sure i wasn't over/under

yup,,

Also in X4mode and X2mode this is simalar.

NBvid is 1.1volts too...they run better stock @ 1.2v NBvid up to 3600+ with Default Vcore

May take hair more Vcore in X4 vs X2 over default the Vcore.

All depends on your cooling .

[Smartidiot89]

My Phenom II x2 550BE ran at 1.28v stock, and clocked to 3690mhz... Always thaught it was 1.28v doesn't anyone have a link to prove me wrong cause I am really confused now that you say 1.35v

[gOtVoltage]

My Phenom II x2 550BE ran at 1.28v stock, and clocked to 3690mhz... Always thaught it was 1.28v doesn't anyone have a link to prove me wrong cause I am really confused now that you say 1.35v

From what ive seen depends on Bios and What Mobo. Average is 1.35v some will set 1.3v or 1.28v like yours even due to Bios.


Heres Mine @ 1.35v default unlocked X4.

F5A and F5 set same defaults on UD4P DDR2

[Dopamin3]

My Phenom II x2 550BE ran at 1.28v stock, and clocked to 3690mhz... Always thaught it was 1.28v doesn't anyone have a link to prove me wrong cause I am really confused now that you say 1.35v

My x2 550 has stock VID of 1.325v. I think it really depends on the chip and/or bios version.

[Rezag1000]

could anyone post the temps that they are getting with their dual core 550 and what HSF they are using? I am trying to decide whether or not I should invest in a new HSF. With two cores running at 3.4 ghz and 1.35V, my thermaltake silent boost keeps my dual core 550 at 50C MAX when running intel burn test. I dont think this HSF will give me any head room to overclock once my 550 is unlocked.

[Dopamin3]

could anyone post the temps that they are getting with their dual core 550 and what HSF they are using? I am trying to decide whether or not I should invest in a new HSF. With two cores running at 3.4 ghz and 1.35V, my thermaltake silent boost keeps my dual core 550 at 50C MAX when running intel burn test. I dont think this HSF will give me any head room to overclock once my 550 is unlocked.

On a mugen 2 (applied with ocz freeze) with stock fan, I run my x2 550 at 4ghz with 1.505v and the under load it goes up to about 48 degrees. When I unlock it and run about 1.4v it is close to the same temperature.

On an unrelated note, does anyone notice these cpus have a weak IMC, or did I just get an unlucky one? It won't run 1600mhz no matter what I try, even as dual or quad.

[Rezag1000]

On a mugen 2 (applied with ocz freeze) with stock fan, I run my x2 550 at 4ghz with 1.505v and the under load it goes up to about 48 degrees. When I unlock it and run about 1.4v it is close to the same temperature.

On an unrelated note, does anyone notice these cpus have a weak IMC, or did I just get an unlucky one? It won't run 1600mhz no matter what I try, even as dual or quad.

How do you read your temps once you unlock it? On my 790X UD4P, unlocking my 550 renders the temp sensor inoperative. I suppose this may not be the case with all boards though.....

Another question. Shouldn't unlocking two additional cores add a considerable amount more heat? I find it suspect that the temp remains the same.

BTW, how do you like the mugen 2? I am thinking about picking one up!


EDIT: I just read the part where you say you run 1.4V when unlocked. sorry! That makes more sense now. thanks for the info!

[Maregg]

On an unrelated note, does anyone notice these cpus have a weak IMC, or did I just get an unlucky one? It won't run 1600mhz no matter what I try, even as dual or quad.

Hi, I had a very simillar problem with a set of G.skill ddr3-1600 C8 1.65v.
Couldn't run them at their rated speed. Setting the ram to Auto in the bios was fine but it was setting them at 1333 C9 1.6v.

It took a while to figure out the problem. Then I got a hint while trying to force the voltage to 1.65. Apparently, Gigabyte tought it funny to confuse us with the supplied voltage to ram. On the 1.5v rating, it actually set the ram to 1.6v. Innitially, I manually set the bios to supply 1.65v. It actually crashed the ram even faster. Then I realized that setting the ram voltage to 1.65v in bios actually made the board supply 1.76v to the ram, effectively overvolting it !!/$"/%?

I had to guess the number to set in bios so that the board would phisically supply 1.65 volt to the ram. Since then, those sticks have been rock solid at their rated speed in both memtest86 and Prime95 blend.

I'm on latest bios besides. Still confused how they implemented the ram voltage on these boards....

[Dopamin3]

Hi, I had a very simillar problem with a set of G.skill ddr3-1600 C8 1.65v.
Couldn't run them at their rated speed. Setting the ram to Auto in the bios was fine but it was setting them at 1333 C9 1.6v.

It took a while to figure out the problem. Then I got a hint while trying to force the voltage to 1.65. Apparently, Gigabyte tought it funny to confuse us with the supplied voltage to ram. On the 1.5v rating, it actually set the ram to 1.6v. Innitially, I manually set the bios to supply 1.65v. It actually crashed the ram even faster. Then I realized that setting the ram voltage to 1.65v in bios actually made the board supply 1.76v to the ram, effectively overvolting it !!/$"/%?

I had to guess the number to set in bios so that the board would phisically supply 1.65 volt to the ram. Since then, those sticks have been rock solid at their rated speed in both memtest86 and Prime95 blend.

I'm on latest bios besides. Still confused how they implemented the ram voltage on these boards....

So now you are running at 1600mhz stable? No matter what I do, I can't achieve 7 CL @ 1600mhz. Trust me, I've tried everything lol. It will pass memtest but fail prime95 blend. So the culprit is definitely the CPU IMC.

[Maregg]

could anyone post the temps that they are getting with their dual core 550 and what HSF they are using?

I'm using the Xigmatek HDT-S1283 with artic colling TIM.
Unlocked X2 to X4 with a modest overclock. My room temp is tipically 24C.
With that setup, I'm getting 34C idle temp and 46C load.

Oh I have lapped my HDT before sitting it up. Also, I have pretty strong airflow in my case.