AMD® Phenom™ II Overclocking Thread

[eddyc]

Here is a longer prime blend. I had to put the memory settings back to 'auto' because a prime failed on me 10 mins in this morning with the same settings from my previous post. The only thing I had changed for that one had been memory settings. Not sure what to try next.

Also I noticed that core 2 seems to be running quite a bit faster than the other 2. I am thinking this must be due to background processes slowing the other 2 down occasionally. Does this seem likely or is it a problem?

 

[NoNameNoNumber]

got the antec 300 up and running now with the fans on full

ambient room temperature 24 degrees at full load

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next im gonna up the multiplier etc and see how cold we can keep it.

 

[NoNameNoNumber]

what is the max temp and voltage for a phenom II x2 550...

 

[bigjimmyauk]

Hey bigjimmyauk, that is looking promising , I wonder what is holding you back? . . . You forgot to add your name to the screenie and half your screenie is bare desktop!

What fan have you got on the Baram or is it running passive? . . .

To anyone else that is having problems getting 4.0GHz stable I am thinking it's either temp related, lack of vCore or CPU-NB vCore or something else random?

i know this quote is from 2 pages back but only just spotted it i found getting any stability at 4ghz was down to 3 things lack of Vcore,cpu-nb V and HT speed i actually had to back off the HT a bit to get more stabilty 2400MHZ seemed by far the best point. but thats just like AMD say HT should be = to 3 time memory speed in my case ddr3 1600MHZ = 800MHZ *3=2400HT(800MHZ because of the double data rate meaning 1600MHZ is actually 800Mhz

 

[NoNameNoNumber]

overclocked to 3.5 GHz just upping the multi to 17.5 on stock voltage

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and at 3.725 @ 1.425v

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3.825 GHz @ 1.488 volts, should i stop there???

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[Uriel]

It's not just RAM / HT balance that seems to make a difference but RAM / NB frequency.

At the moment I'm running my RAM at roughly DDR2 600 speeds (as I don't need to have the RAM volts quite as high as DDR2 800). With my NB at 2100 I get a 3DMark06 score of 13880. With my NB at 1800 I get a score of 13963 (both scores with stock HD4850). SuperPi was faster too, with me getting around 21.5s @ NB 1800 as opposed to 21.8s @ NB 2100. Fritz was a little faster with the northbridge clocked higher though.

At exactly 3x the RAM speed, do NB and HT timings just get a little more efficient?

 

[bigjimmyauk]

i think a lot of people neglect ram speed,and cpu-nb,ht
not a lot of point going from say 3.2ghz to 3.8 ghz if your not going to increase the HT speed,cpu-nb,and ram timings
(the above are certainly noticable at high resolution gaming giving smoother and faster framesrates.

syaing that tho i stopped seeing in game differences in crysis at 3.6GHz

 

[Muel]

Wayne, how about a leaderboard?

Fastest clock.
Fastest stable clock. (Prime95 for a time period of your choosing).
Fastest SuperPi 1M time.

Any others? But please, this would be fun! I'd be above middle ground which would be a nice feeling.

 

[Uriel]

Wayne, how about a leaderboard?

Fastest clock.
Fastest stable clock. (Prime95 for a time period of your choosing).
Fastest SuperPi 1M time.

Any others? But please, this would be fun! I'd be above middle ground which would be a nice feeling.

Largest % overclock or performance improvement from stock?

 

[Muel]

I'm loosing that badly!

But yeh excellent idea. I'd like to see % overclock increase and SuperPi 1M time decrease, but then I loves me SuperPi....

 

[buttkinz]

just a quickie to show the progress of this x2 chip unlocked, this is my day to day speed, have undervolted it slightly and havent got round to tightening the ram timings back up after flashing a modded bios to up the HTT speed.

 

[NoNameNoNumber]

3.725 GHz @ 1.425v 8 hrs prime 95

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gonna leave p95 on all day on 3.825 @ 1.5v

 

[SMAndy]

Guys... my vCore is currently on 1.475v, at 3.5Ghz (PII X3 720BE, 206x17)

Do you think it would help me get to 3.6 if i upped the voltage to 1.5? Also, has anyone tried changing the settings to something like an HT ref of 250 to get RAM speed of 1332 (250x5.33) CPU speed of 3.625Ghz (multiplier 14.5) and HT/CPU-NB of 2.5Ghz?

I'm wondering if this would be a decent way for me to get a nice overclock. Any experience with this?

 

[~>Dg<~]

me personally wouldnt go much more if at all for daily 24/7 use

 

[bigjimmyauk]

Baram push/pull results for you bigwayne

baram 1 fan push, 33,idle-- load 53(2 hours prime 95)
baram 2 fans push/pull 27idle-- load 43 (2 hours 25 prime 95)

while we are on subject what causes prime 95 to fail a blend test just been fiddling a 3.9 overclock but it's failing blend test within 1-5 minutes

 

[eddyc]

I assume you have tried upping the vcore?

 

[~>Dg<~]

my c2 955 takes 1.5v to be stable at 3.9

 

[Uriel]

Prime Blend tests lots of stuff (cpu, cache, RAM) but while overclocking my FX5000, it was usually a sign to up the vcore.

 

[bigjimmyauk]

yup a 0.25v boost to both vcore and cpu-nb seems to have done the trick been blending for 2 hours now at 1.45Vcore instead of the 1-5 minutes i got earlier lol

thanks gonna blend it for 6 hours if i can

 

[joewm18]

I've got the following:

P2 965 3.4 GHz C3
1600mhz g skill ripjaw cl7 ram
Asus 770 mobo

Cooled using an arctic 7 Rev 2 - I am seeing temperatures up to 70C! That is running at only 3.6GHz. What's going wrong? I applied the heatsink using AS5 but this paste was about 6 years old, does paste degrade and cause such mayhem?

I've tried all options, currently I'm running stable 3.6GHz (15 X 240) at 1.45v - the reason being the only way I can run my ram at 1600 without crashing is by setting to 1333, 7-8-7-24-2T at 1.65v and upping the FSB. NB is 2400MHz at 1.3v.

Is this a total mess? Thanks for helping a noob.