Phenom 9950 overclocking

[Meizuman]

Hmm... My mobo is definately a weirdo (or my chip is). I've been having a bit strange behavior lately. I am not going to brag that my CPU 3.2g, NB/HT 2,48g, mem 1.1g OC was perfect or stable, since it didn't run prime more than couple of minutes... but still it was gaming stable for long perioids, of course every now and then it did gave a hard reset or loop of death... But I used it quite a long time.

Then I started to try those new "f3-series" bioses and well, they didn't really do a jack. Though I got my highest CPU-Z screenie/ validation with some of those bioses... But to be honest, lately my rig has been a bitch. In some point I was unable to boot to windows even @ 3gig no matter what I tried! And those reboots! I got to know them real good...

Then the other day I came to a conclusion that my Nexus PSU was not good enough. I read few tests, in the other (finnish) it had the most fluctuating 12V rail and it was below 12V all the time. Well that got me thinking, maybe I can (with a good luck) change my PSU to some other brand in the store where I got it. Now that was easy trick... Had to pay 30€ to swap it to HX620. So then I got a real deal in the power section. I went home, hooked it up and... well.

Nothing changed. Still got reboots and I thought that the chip has gone "bad" or something like the mobo mosfets... I have spent couple days now and tried and tried. F3 bioses just wont overclock. Maybe it is the ACC that doesn't really work in F3's. I searched the most stable settings in F3o... The "trick" was disabling the Dynamic clock gating in NB, I also disabled Azalia.

Then switched back to F2 (ONCE AGAIN) and tried 3.2g with multiplier only. Volts were at 1.4 where it has been working earlier. First tried with ACC disabled... got to XP loading screen and freezed. Reset, set acc to +0, XP loading screen, on the desktop, freeze. Reset, set ACC to +2, XP loading screen, on the desktop, loop of death. Reset, set CPU NB VID to +0.050V... I just thought I will try if it helps anything. Xp loading screen, desktop, melody, started AOD, task manager, hwmonitor, intelBurnTest... enabled error detection, maximum stress, 5 loops, start... Everything looked good, and then... PASS! This was the Second time I passed linpack The first time was a bit earlier today with F3o... But I don't know if it would've passed second time.

One thing I did was adding a fan to the top of mosfet cooler. It doesn't really stand out so much because its the same color. I have it behind a controller (MFC1 Plus). It is not so loud but at full speed it does move air quite much. Since the Northbridge is linked to mosfet cooler with 2 heatpipes, it dropped NB temp about 4-6 degrees. Maybe that gives a minimal effect on stability... At least it felt like it.

Now that I have shared this with you, I must say that overclocking a Phenom (at least an Agena) can be a long journey... maybe a neverending. I have still things to learn and maybe this OC will fail on the second I press "Submit Reply". Hopefully it doesn't!

I have learned a lot from this thread and seen many newcomers to get really decent results. On the other hand I've seen MANY mobos go up in smoke too! As Brother Esau in the XS forums said, I would not recommend overclocking with HTT, it will add more stress and can fry your mobo! That said, I'll probably going to play some games after this.

Over and out (for some time)

 

[fullinfusion]

wow man, quite a story and im glad it all worked for ya

 

[Cocayn]

I can get it to 3023Ghz like that around,, its on 33C* idle... on load 45*

so tryed to clock over 3,2GHZ , computer crashes or else it would not start more then Bios just Black screen,,

what is the problem??

 

[fullinfusion]

I can get it to 3023Ghz like that around,, its on 33C* idle... on load 45*

so tryed to clock over 3,2GHZ , computer crashes or else it would not start more then Bios just Black screen,,

what is the problem??

a 600watt psu for what your running mite be part of the Phenomenon your experiencing you need at least 800w for what your running.... what cpu voltage you running @ to try and clock 3.2GHz?

 

[fullinfusion]

Here's what im doing at the moment, this mite shed some light on where your problem lays.... notice how high i need to run the core volt's for this clock (stable), take caution thou, im on water

 

[Skywalker12345]

Those voltages are crazy!

what are your temps?

 

[p_o_s_pc]

Those voltages are crazy!

what are your temps?

+1 that is a high voltage chip isn't going to last that long

 

[Skywalker12345]

i had my 9950 at 1.425V around 3.35ghz on AIR

 

[gkout]

My greetings to all of you,

I am a newbie here and this is my first post. I have been looking around the forum and read alot. I have a 9950 PH on Gigabyte DS4H (790GX) board and 800mhz Corsair Mx2 memory.Oh yes the vga is a 4670 Ati and a zalman 9000 cpu cooler. I am ready to get my feet wet on oc and wanted to ask what is a safe voltage for a production system. I know someone can just crazy ov the cpu just for numbers but I need to have a safe voltage for a system that will last long enough .

All comments are welcome,

Happy OC to all of u.

 

[Skywalker12345]

i had my 9950 at 1.425V around 3.35ghz on AIR

closest one i could find on this thread

i accidentally booted into vista but it doesnt seem very stable

 

[Skywalker12345]

stay below 1.425 if on air. the lower the vcore the longer the chip will last suposoply

 

[fullinfusion]

Those voltages are crazy!

what are your temps?

31c at idle and 48c @ full prime stress for 2hrs.....

 

[fullinfusion]

My greetings to all of you,

I am a newbie here and this is my first post. I have been looking around the forum and read alot. I have a 9950 PH on Gigabyte DS4H (790GX) board and 800mhz Corsair Mx2 memory.Oh yes the vga is a 4670 Ati and a zalman 9000 cpu cooler. I am ready to get my feet wet on oc and wanted to ask what is a safe voltage for a production system. I know someone can just crazy ov the cpu just for numbers but I need to have a safe voltage for a system that will last long enough .

All comments are welcome,

Happy OC to all of u.

Welcome to TPU mate!!!!! id try 1.3875volts and see what it can get for a clock.

 

[gkout]

Welcome to TPU mate!!!!! id try 1.3875volts and see what it can get for a clock.

Thank you infusion...full of it.... I will try it and post the results.

Cheers

 

[fullinfusion]

Thank you infusion...full of it.... I will try it and post the results.

Cheers

Hmmmm, not sure how to take that but whatever........ post your results mate.

 

[Meizuman]

I may have solved something... Now at 3.3Ghz Linpack x5 stable
There is two runs on linpack, the other was ran at 3.2 and the other 3.3

Hmmm, I found a screenshot showing 1 hour of prime95 blend at 3.3Ghz and 2.4GHz NB/HT link... and the max temps were 52C I can't remeber what kind of settings I had that time. It is possible that I had my window hatch open for some cooler air... Because those two runs made my chip to run at 55-60. And all fans were blowing their blades off! Room temp about 23C.

I'm going to stay at +2 with ACC... I haven't tested it SO much, but it looked like it had a tiny effect on stability when I set it to "per core" better than "all cores" though they all are +2.

I did find one possible reason for my reboots. I OC'd the PCIe bus to 108MHz (RT HDR IBL got the best frame rate at that speed). Today when I tried to increase that from 100 to 108, I got sudden reboot. So that little gain (few fps in RT HDR IBL) will be gone. Not a big deal... Maybe if there was PCIe voltage, it could be raised very slightly. But there isn't so thats it.

Now that I have been OC'ing this rig for over 4 months, I have come back to where I was after about a month or one and a half...

Glad to see my chip back in the business.

 

[Chicken Patty]

My greetings to all of you,

I am a newbie here and this is my first post. I have been looking around the forum and read alot. I have a 9950 PH on Gigabyte DS4H (790GX) board and 800mhz Corsair Mx2 memory.Oh yes the vga is a 4670 Ati and a zalman 9000 cpu cooler. I am ready to get my feet wet on oc and wanted to ask what is a safe voltage for a production system. I know someone can just crazy ov the cpu just for numbers but I need to have a safe voltage for a system that will last long enough .

All comments are welcome,

Happy OC to all of u.

Hi there buddy, welcome to TPU. I would start off by leaving all voltages on auto except for vcore and ram voltage.

THe ram just simply set at manufacturers specs, and voltage.

The vcore set it to 1.300v.

Then from there for now start to raise your CPU multiplier one notch at a time only. You should be able to do about 2.9-3.0 GHz at 1.300v. Try that out and check back in. Good luck

 

[gkout]

Hi there buddy, welcome to TPU. I would start off by leaving all voltages on auto except for vcore and ram voltage.

THe ram just simply set at manufacturers specs, and voltage.

The vcore set it to 1.300v.

Then from there for now start to raise your CPU multiplier one notch at a time only. You should be able to do about 2.9-3.0 GHz at 1.300v. Try that out and check back in. Good luck

Nice to meet you Chicken,

Thank you for the guidelines. I suppose I have to disable the auto frequency adjustment on the bios too right? Could I just increase the multipliers and leave auto frequency on? Is it suggested?

Thnx

 

[Cocayn]

a 600watt psu for what your running mite be part of the Phenomenon your experiencing you need at least 800w for what your running.... what cpu voltage you running @ to try and clock 3.2GHz?

its work at 3,18Ghz,, but just if i got over 3.2Ghz it will just run around Bios and it will black screen and the windows vista wont start or something, or else sometimes it just get black screened when I Save and restart from Bios. Then I need to let the computer off 5 minutes take it on back it comes Red Writing : Overglocking failed blablaba ...


hmmmm so you think its my Power supply`?

 

[Meizuman]

It can be just your chip... if it fails when it doesn't exactly suck power. And that 3.18 Ghz is a decent number! And your mobo can be a limiting factor too. You have SB600. In worst case it can cost a few hudred MHz's when you don't have ACC. With golden chips it probably isn't so big deal. But I would say 3.18 is a good result for your system.

Now you could try to overclock NB (memory controller) and HT link... They improve 3D performance among other small things. But dont be suprised if your rig will be hanging/rebooting when you try it. It's a long trial and erroring process... if you want the most.

Cheers

 

[Cocayn]

It can be just your chip... if it fails when it doesn't exactly suck power. And that 3.18 Ghz is a decent number! And your mobo can be a limiting factor too. You have SB600. In worst case it can cost a few hudred MHz's when you don't have ACC. With golden chips it probably isn't so big deal. But I would say 3.18 is a good result for your system.

Now you could try to overclock NB (memory controller) and HT link... They improve 3D performance among other small things. But dont be suprised if your rig will be hanging/rebooting when you try it. It's a long trial and erroring process... if you want the most.

Cheers

aa Cheers Mate, btw

HT link is on : 2320MHZ now with along 3Ghz Clocked on CPU

NB Freq is on : 2322MHz

so you think I can Clock it more ? the HT and NB?

 

[Meizuman]

aa Cheers Mate, btw

HT link is on : 2320MHZ now with along 3Ghz Clocked on CPU

NB Freq is on : 2322MHz

so you think I can Clock it more ? the HT and NB?

Nope You can try of course!

 

[Chicken Patty]

Nice to meet you Chicken,

Thank you for the guidelines. I suppose I have to disable the auto frequency adjustment on the bios too right? Could I just increase the multipliers and leave auto frequency on? Is it suggested?

Thnx

of course, set your frequency to default. leave your NB at 10, and your HT at 2.0 GHz.

So like this


CPU multi - 13x
NB multi - 10x
HT 2.0 GHz

Just raise the CPU multi .5 at a time.

Raising the NB multi will yield better performance, but it also makes it harder to stabilize your o/c. Find your max on the CPU first, then raise your other multipliers.

 

[gkout]

2.9Ghz and rising

of course, set your frequency to default. leave your NB at 10, and your HT at 2.0 GHz.

So like this


CPU multi - 13x
NB multi - 10x
HT 2.0 GHz

Just raise the CPU multi .5 at a time.

Raising the NB multi will yield better performance, but it also makes it harder to stabilize your o/c. Find your max on the CPU first, then raise your other multipliers.

Hi Chicken, all,

Took my first steps into o/c. Raised .5 each time. Tested with 3d mark '06 and prime95 run at least 30 minutes in torture mode (i believe i would have crashed it in 5 if i had stability issues). I have not touched voltages and NB multipliers. Everything is still in factory settings except for the cpu multi which is configured currently at 14.5

Here 's a screenie of my first tests .




Waiting for your comments.

 

[3dsage]

Those are some nice temps for Load, I'm getting around 59C after an hour of OCCT with those same settings.
I think I have to reseat my HS.