The AMD Phenom II OC'ers Club

[exodusprime1337]

@ paulieg, i have a gigabyte board, well my g/f does with a p2 940 and she's using 1.3625-1.3875 to hit 3k nb on hers. i don't know much about the board cause i'm more of a nvidia chipset guy. but i'll ask her when i get home later to check and see if she knows. i'm sorry i didn't even look at the post cause i don't use the board, but i think i can help.

 

[Super XP]

LOL. I'm quoting myself here, but does anyone have any answers to this??

My settings:
3.60 GHz vCore = 1.375v Stable (Anything higher than 3.60GHz needs over 1.45v from my testing. That extra speed is not worth the higher volts required unless you go water cooling.
NB @ 2,000MHz = NB Voltage = 1.45v Stable

Reason why I have a high voltage for my NB is because I am using 8GB of DDR2 ram. You need to up the NB voltage if you plan on using all the DIMMs on your mobo along with the memory voltage.

 

[jbunch07]

ADD me to teh list please.

 

[Chicken Patty]

alright jbunch, woohoo, bout time

 

[cdawall]

ADD me to teh list please.

tighten your TRC to ~24

 

[jbunch07]

Thanks bro..Ill will do that!

 

[Super XP]

Thanks bro..Ill will do that!

Ya, should get you a few more FPS out if it.

 

[mime_fx]

ADD me to teh list please.

 

[Super XP]

Holly Mother, is that setup stable? The Hyper Transport and the NB speeds are way Super Clocked

 

[eidairaman1]

dont tell me this is the stable limit for the Phenom 2, because i want it to break 4 GHz barrier on Air.

 

[Wartz]

You can go past 4ghz on air, but your cooling and case airflow better be damn good, because you are going to need 1.58-1.6vcore most likely. Luckily, the PHII can take that voltage just fine, but your motherboard has to be good too.

 

[mime_fx]

i am stable but i am on water and i cant go any higher
i thing i am limit by my motherboard.
my stepping is (CACVC AC 0849DPAW)
if you see at this forrum :http://www.xtremesystems.org/forums/showthread.php?t=213248
two more users have same stepping as me but have higher clocks.

sorry for my english.

 

[eidairaman1]

ya Athlon XP liked High Volts too for overclocking, fastest Known AXP was a 3.0 GHZ but i think Confirmed was 2.7.

 

[cdawall]

Holly Mother, is that setup stable? The Hyper Transport and the NB speeds are way Super Clocked

go check some of mine i ran the NB up to 3ghz

 

[computertechy]

3.8ghz CPU-Z

check my rig out for 3dmark scores

add me please

 

[trt740]

3.8ghz CPU-Z

check my rig out for 3dmark scores

add me please

very nice very nice

 

[johnnyfiive]

My highest on stock vcore:

This is a Phenom II 920 btw.

 

[MAGMADIVER]

I've gone upto 2,400MHz now for the NB. How will having a faster NB improve performance? I've done memory benching with 1,800, 2,000 & 2,400 NB with no noticable performance improvement.

Also It's not worth OC'ing past 3.80 GHz if you require more than 1.50v. I don't think that extra speed justifies that massive spike in vCore. This is why 3.60 GHz seems to be the sweet spot. Even 3.70 GHz if you can keep the vCore bellow 1.45v.

Ive got my rig running at 3.711Ghz and I have the voltage set to 1.48V and it runs really cool. i am quite pleased with it's stability... I havent checked any benches to see if it makes any real difference to move the NB from 1.8 to 2.0Ghz

 

[Super XP]

I've had my Phenom II all the way upto 3.90 GHz with 1.50v and it passed Prime95 along with several other benchmarks running for hours at a time. My system never crashed. BUT when playing a game like Left 4 Dead, it crashes on intense scenes where a horde of zombies attack you.

So I don't think benchmarks really determine whether your system is stable or not. I think playing physical PC games does a much better job in determining whether your setup is 100%stable or not.

 

[Super XP]

go check some of mine i ran the NB up to 3ghz

Thats an awesome speed but I think if you want a maximum CPU OC I would at least drop the NB down to 2000MHz.

 

[cdawall]

Thats an awesome speed but I think if you want a maximum CPU OC I would at least drop the NB down to 2000MHz.

it didn't clock higher last time i tried but then again this was my max

 

[MAGMADIVER]

it didn't clock higher last time i tried but then again this was my max

My motherboard wont let me run up the FSB at all i can get it up to 208-209 and the it will crash or not even boot... so I have to rely on the multiplier. but if I put it above 18.5, it becomes really unstable no matter how much voltage i pump into it.

 

[cdawall]

My motherboard wont let me run up the FSB at all i can get it up to 208-209 and the it will crash or not even boot... so I have to rely on the multiplier. but if I put it above 18.5, it becomes really unstable no matter how much voltage i pump into it.

do you have a chip that will flash off the older BIOS's i have seen some chips getting better oc results on a BIOS that doesn't really support the phenom II chips

 

[Super XP]

There are other settings involved which you will have to address if you plan on upping the FSB (HTT) speed from its 200MHz default. That is most likely why you are running into stability problems.

I’ve seen 4.20 GHz to 4.50 GHz OC’s with the PII 940 on air cooling alone with reasonable CPU voltage increases. But these guys really took the time to completely dissect the every single Bios setting,

After work I am going to try for a nice 4.00 GHz OC, then work from there.

 

[cdawall]

There are other settings involved which you will have to address if you plan on upping the FSB (HTT) speed from its 200MHz default. That is most likely why you are running into stability problems.

I’ve seen 4.20 GHz to 4.50 GHz OC’s with the PII 940 on air cooling alone with reasonable CPU voltage increases. But these guys really took the time to completely dissect the every single Bios setting,

After work I am going to try for a nice 4.00 GHz OC, then work from there.

i have seen 3.8-4.2ghz on air nothing over that even on XS