Maximum OC limit of PhenomII x4 955 BE

[StrYker_BLACK_E]

^ u didn't tell me your ambient temp and also the TIM u used.

oops!
ambient room temp is 29-30d/celcius
TIM- MX-2

 

[$$Lionking$$]

oops!
ambient room temp is 29-30d/celcius
TIM- MX-2

Adjust Load Line Calibration in BIOS to 16.xyz%-19.xyz% @ 1.4875v and then see if youre able to reach a higher speed.

Adjusting Load Line is most of the times worth 100-150MHz...

disable CnQ too...

 

[StrYker_BLACK_E]

Unstable @4.0ghz even after trying everything
increased vcore set to 1.55v
cpu-nb @1.29v
load line caliberation@19%
temp goes up to 63d/c @100% load p95 and
reboots with BS error BCCode 124.

Now running p95 stable back @3.9ghz vcore1.50v cpu-nb1.28v
P95 load temp @62d/c

 

[$$Lionking$$]

post a cpuz shot(cpu & memory) with current settings.... did LLC help??

and is ur BIOS up to date?

 

[StrYker_BLACK_E]

post a cpuz shot(cpu & memory) with current settings.... did LLC help??

and is ur BIOS up to date?

as requested here it is current settings
CPU-Z Validator 3.1

and yes LLC did help as i could go upto 3.9ghz

updated bios to latest "2105"

 

[$$Lionking$$]

did u update bios just now?? and y is ur ram @ 533MHz is it unstable at 667?
try 667MHz and then run SuperPI 32m to see if there is any error if u can?

P.S. My bad My bad, i thought u were doing 3900MHz without LLC...

 

[StrYker_BLACK_E]

did u update bios just now?? and y is ur ram @ 533MHz is it unstable at 667?
try 667MHz and then run SuperPI 32m to see if there is any error if u can?

P.S. My bad My bad, i thought u were doing 3900MHz without LLC...

BIOS already updated last year
and yeah about ram speed it was unstable @667mhz
but will give another try+run SPI 32m

thanks for the assistance

changed ram speed back to 667 from 533mhz
ran superPI32m n completed without any error.Next up
ran prime95 @3.9ghz but was unstable @667mhz giving BCCode 0x50

so now,i'm back to the previous settings 3.9ghz@1.52v cpu-nb1.28v

I think this is the max stable oc for my cpu as clock speeds of 4.0ghz is absolutely a no go for me no matter how much i change the settings.

 

[$$Lionking$$]

really?? I think ur doing pretty well... little more tuning for RAM, HTLink & IMC and u shud be doing something between 3950Mhz - 4050Mhz.

Try decreasing the HT Link 200MHz(1800MHz), CPU-NB to 2300-2400MHz. NB VID between 1.25-1.28... RAM - 667MHz Timing looks good.. As you have 2 memory sticks your IMC is a little more stressed than it is with 1 stick so u have to back down a little at a few places...

Try CPU Multiplier @ 19.5.
Then start increasing reference clock from 201MHz in steps of 1Mhz to 205MHz...

Hopefully this will do the trick..

 

[StrYker_BLACK_E]

Try decreasing the HT Link 200MHz(1800MHz), CPU-NB to 2300-2400MHz. NB VID between 1.25-1.28... RAM - 667MHz Timing looks good.. As you have 2 memory sticks your IMC is a little more stressed than it is with 1 stick so u have to back down a little at a few places...

Try CPU Multiplier @ 19.5.
Then start increasing reference clock from 201MHz in steps of 1Mhz to 205MHz...

Finally here is my stable OCed result..

CPU-Z Validator 3.1

Bios settings
Vcore:1.52500
HT/Reference Clock: x204
CPU/Nb:2400
CPU/Nb Voltage:1.30000
LoadLineCaliberation@16.125%
HT Link@200MHz
SDRAM@667MHz/ 9.9.9.22.33

Thank you guys for your help
@radeon6950
@$$Lionking$$
@doomgiver
@Tech_wiz
@Avichandana20000

 

[radeon6950]

your htlink is too low it should be as close as possible to 2000mhz

 

[StrYker_BLACK_E]

your htlink is too low it should be as close as possible to 2000mhz

OOkey dockey....back to BIOS again
btw...if i am able to push the htlink close to 2000mhz stable
do you think i could achieve higher clocks?? since my current settings with htlink@200mhz is stable @clock speed 3.98ghz

 

[radeon6950]

i think you have reached your max possible limit. because overclocking further will increase temps beyond 60 degrees.

 

[StrYker_BLACK_E]

your htlink is too low it should be as close as possible to 2000mhz

too low?can you please let me know because i cannot find any other frequency stable than the 200mhz.

Not stable @ any other frequency
the only frequency stable is 200mhz
tried HT Link
@400
@1800mhz
@2000mhz....
All settings unstable
only BCCODE 124 ERROR

what say guys....

 

[radeon6950]

provide me with a link to your ram.
set htlink @2000mhz and drop your cpu clock a bit and then try.

 

[$$Lionking$$]

You could do a little over 4GHz if you try harder...

Just a reminder - 1.275V/1.280V @ CPU-NB is very very aggressive on AIR but 1.300V - stupid.

Njoi!!

 

[radeon6950]

@lionking the max voltage limit of the cpu-nb is 1.55v same as the cpu. and for 24/7 usage it is 1.4v
i dont understand how 1.3v is really aggressive. also just to clarify we are talking about the imc and not the motherboard north bridge.

 

[StrYker_BLACK_E]

provide me with a link to your ram.

Will this do?

*img651.imageshack.us/img651/2828/capture1bxu.png

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*img43.imageshack.us/img43/388/capture2ig.png

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*img192.imageshack.us/img192/9669/capture3yi.png

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[radeon6950]

okay go into bios and manually set ram frequency, timings and voltage as per jedec #4.
if you're still not stable drop your cpu frequency a bit.

 

[StrYker_BLACK_E]

okay go into bios and manually set ram frequency, timings and voltage as per jedec #4.
if you're still not stable drop your cpu frequency a bit.

timings & voltage manually set but not frequency as the options for this are
400mhz
533mhz
667mhz
800mhz

and my current mem timings are
680mhz
9
9
9
25
34

i guess i should just select 667mhz right?

 

[$$Lionking$$]

radeon6950 - Well Thubans are toast @ 1.45-1.5v on IMC... @ln2.. 1.3v is what u shud be doing on air max!!.... Denebs are not gng to be much different in my experience... 1.325/1.35v Max probably but again that wud be on coolers like Truright/NHD14/V10...

@Stryker - increase ram voltage a little bit at this same setting... drop ur cpu nb to 2200 or 2000 keep it at 1.3v. Increase HTLink to 1600 or 1800MHz and run 256K FFTs in prime95....