Official Phenom II x2 550 Club! - Page 17 - Overclock.net

**thlnk3r** · 07-02-09

Quote:

Originally Posted by memnoch_thedevil

Oh and thlnk3r here is the 2 that I like the best, take your pick

Clock speed 3930.6 or 3815.1
FSB x Multi 224 x 17.5 or 218 x 17.5
Vcore 1.44v or 1.375
RAM speed 900 or 872
HT Link 2695 or 2616
Motherboard Gigabyte GA-MA790GP-UD4H
Cooling method Xigmatek DarkKnight

Memnoch, wow nice overclocks. I especially like the OC with 1.375 volts. Have you tested stability in OCCT or Prime95/Orthos?

By the way great suggestion above.

Quote:

Originally Posted by RendoR

Is there a point where you absolutely have to add voltage to the vcore? Like 3.7ghz or so? Just curious... It was weird though. Everything was fine until I put the multiplier back to normal. Then it crashed on me for the first time?

RendoR, there really is no set speed or time when you should start increasing the Vcore. Just keep overclocking until you run into stability issues. Once that starts occurring then bump the Vcore (or the other necassary voltages) up a little. Here is an excellent Phenom II overclocking guide that I highly recommend reading over: http://www.overclock.net/amd-general...ing-guide.html. Hopefully that guide sheds some light on your questions.

Good luck guys

memnoch_thedevil · 07-02-09

I can run a Prime95 overnight tonight if you want. I passed a 20 pass IBT on high with those settings, so I didn't really think it was necessary to run Prime, as IBT stresses the CPU more, and usually higher temps too (especially on high setting). I did pass a 15 minute OCCT, I usually run that first, and if that passes, I do a 10 pass IBT on standard, then after that a 20 pass on standard, and then a 20 pass on high.

**thlnk3r** · 07-02-09

Quote:

Originally Posted by memnoch_thedevil

I can run a Prime95 overnight tonight if you want. I passed a 20 pass IBT on high with those settings, so I didn't really think it was necessary to run Prime, as IBT stresses the CPU more, and usually higher temps too (especially on high setting). I did pass a 15 minute OCCT, I usually run that first, and if that passes, I do a 10 pass IBT on standard, then after that a 20 pass on standard, and then a 20 pass on high.

Memnoch, no worries buddy. It appears your overclock is stable enough. I was just curious about Orthos/Prime95 because those seem to be the standard/common stress testers around.

Great job on the overclocks

Contagion · 07-02-09

i past an over night blender with my 550 unlocked at 3.2.
not able to go much farther until i get a new cooler

**thlnk3r** · 07-02-09

Quote:

Originally Posted by Contagion

i past an over night blender with my 550 unlocked at 3.2.
not able to go much farther until i get a new cooler

Contagion, good job. You may be able to get by with a higher overclock if you keep the Vcore at stock. That shouldn't really effect your full load temperatures too much. Have you attempted to do that yet?

Good luck

Contagion · 07-02-09

Quote:

Originally Posted by thlnk3r

Contagion, good job. You may be able to get by with a higher overclock if you keep the Vcore at stock. That shouldn't really effect your full load temperatures too much. Have you attempted to do that yet?

Good luck

how would i do that? keep it at stock volts and overclock it a bunch?
right now, i have the volts raised from 1.33 to 1.36
thnx for help

raxen · 07-02-09

Depending on your chip, you might actually be able to reach 3.2 with an undervolt.

Check the spreadsheet I pmed you with last night. I have a section devoted to undervolting. Try those settings out. The less volts you pump into a chip, the lower temps it will be.

Contagion · 07-02-09

Quote:

Originally Posted by raxen

Depending on your chip, you might actually be able to reach 3.2 with an undervolt.

Check the spreadsheet I pmed you with last night. I have a section devoted to undervolting. Try those settings out. The less volts you pump into a chip, the lower temps it will be.

ok. according to that spreadsheet, i should be able to get 18.5x200 with 1.2125 votls?

raxen · 07-02-09

LoL... i wish.

Some of the settings on there aren't stable. The green ones highlighted were good. Focus on those.

Basically, the spreadsheet was a log of all the settings I have tried, including the ones that didn't work out.

EDIT: I see where you're confused a bit. Basically, how the biostar mobo works is you apply a Vcore and a Vcore overvolt. The sum of those two numbers is your ultimate Vcore. If you look at the spreadsheet, 200x18.5 highlighted green, you will see my Vcore is actually 1.25+0.25 = 1.5v.

The reason I do this is because the Vcore setting sets the Vcpu-nb of the chip. In the above case, my Vcore is 1.5v, and my Vcpu-nb is 1.25v.

You want to limit Vcpu-nb to the minimum. Additional voltage only generates unnecessary heat, and limits your OC potential.

Contagion · 07-02-09

Quote:

Originally Posted by raxen

LoL... i wish.

Some of the settings on there aren't stable. The green ones highlighted were good. Focus on those.

Basically, the spreadsheet was a log of all the settings I have tried, including the ones that didn't work out.

EDIT: I see where you're confused a bit. Basically, how the biostar mobo works is you apply a Vcore and a Vcore overvolt. The sum of those two numbers is your ultimate Vcore. If you look at the spreadsheet, 200x18.5 highlighted green, you will see my Vcore is actually 1.25+0.25 = 1.5v.

The reason I do this is because the Vcore setting sets the Vcpu-nb of the chip. In the above case, my Vcore is 1.5v, and my Vcpu-nb is 1.25v.

You want to limit Vcpu-nb to the minimum. Additional voltage only generates unnecessary heat, and limits your OC potential.

lol. on the spreadsheet you pm'ed me there is nothing in green

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