First time overclocker- got probs

[wave4mer]

Hello all,

First post first overclock.

Im having a few problems stablising my Overclock. here are my specs

Phenom II x6 1055T REV PH-E0 stepping 0 @4004Mhz
Gigabyte GA-MA790X-UD3P MB
4x2GB DDR2 800 PQI matched pairs dual unganged
2 x XFX HD 5550 DDR2 1gb
700w PSU rated 80+
Arctic Freezer Xtreme Cooler
3x WD 80G HDD Raid 0

Settings

CPU multiplyer locked @ x14
CPU voltage @ 1.475
CPU NB VID @ 1.250
NB Freq Vol @ 1.300
SB Voltage @ 1.200
DDR2 Vol @ 1.80 (stock)
FSB @ 286 increased by 1 Mhz till unstable took back 3 mhz to keep it at 4Ghz

NB Multiplyer x8 = 2574Mhz
HT link x7 = 2288Mhz
DDR2 multiplayer x2.66 = 763Mhz (underclocked)

Timings of DDR2 CL 5.0 / tRCD 5.0 / tRP 5 / tRAS 15/ tRC 23 / CR 2T

the timing are quite loose as the ram is underclocked.

My problem is that this setup will run everything except Prime 95 it crashes about 10 mins into it, Ivwe tried all sorts, upping volatege to core / NB vid / NB / SB , dropped HT link , upped HT link,

I just cannot sem to get it stable for Prime 95, Now I can be gaming for hours without a glitch, or downloading, running BOINC, listening to music and its all fine, but as soon as I put it to torturre test on prime 95 it last about 10 mins.. I have check the temps and with prime they do get quite high.

48c on idividual cores 53c CPU temp in everest. 40c MB temp

idle temp is 21c

Thee question is am I missing or doing something wrong ?

any help would be appreciated, many thanks


shaun

 

[dfour]

Have you tried backong the HT back 5 points and testing prime again. Do it until your happy and then see if the resulting speed is enough for you.

IMHO if you can do all you want to do for hours but cant get prime stable I wouldnt care. Overall the machine seems totally stable bar one intesive processor test that is just that a test.

Oh and BTW welcome to the forums

 

[wave4mer]

thank you,

Im in agreement with you, but in order to make it an overclock it does have to be stable with prime 95 I would like it to be anyway, just for arguments sake, can you spot any great mistakes ive made? how does my overclock fair for first time


many thanks

 

[dfour]

Have you tried backing the northbridge down 1 multiplier??

I cant spot any glaring errors and its a good overclock fo that chip on air

 

[Legion]

My problem is that this setup will run everything except Prime 95 it crashes about 10 mins into it, Ivwe tried all sorts, upping volatege to core / NB vid / NB / SB , dropped HT link , upped HT link,

I just cannot sem to get it stable for Prime 95, Now I can be gaming for hours without a glitch, or downloading, running BOINC, listening to music and its all fine, but as soon as I put it to torturre test on prime 95 it last about 10 mins.. I have check the temps and with prime they do get quite high.

48c on idividual cores 53c CPU temp in everest. 40c MB temp

idle temp is 21c

Thee question is am I missing or doing something wrong ?

any help would be appreciated, many thanks


shaun

As you can see Shaun the only thing tipping your overclock over is Prime.
This is because it's the only program you've decribed you use that's using all 6 cores at full load,gaming and the rest you've described is mostly 1-2 threads.

The only reliable 1055t (stable)4ghz overclocks you read about are watercooled.

I've not seen many stable 4ghz "air cooled" 1055t's,most top out around 3.8 - 3.9ghz which is probably your chips "6 core stable" limit also.

The newer "95watt" 1055t's are the thing to be looking to buy now,the lower thermal envelope gives these cpu's a higher chance of 4ghz+.

Give IBT (intel burn test) a go also(using max settings) if it can pass 20 loops of that it's pretty much stable for whatever you can throw at it

 

[wave4mer]

hey thanks I didnt know that, about my chip not being able to deal with it so well, I numbercrunch using BOINC -seti & docking, this uses all 6 cores and temps are around 49c individual cores & 6 degrees higher for CPU according to everest 55c thats maxed out on Load.

@dfour - yes I tried knocking back the NB multi by 1 and 3 workers failed Prime95, so uppped it back up and increased NB voltage that got it stable but now it just crashes after 10 mins, I thought it might be thermal but temps are high but not dangerously, or are they, I cant find much info on max temp for my chip, I read somewhere that it is around 62-63 but it did not say indivdual CPU temps or core temps, does anyone know the max temp for my chip ?

thanks for the warm welcome

shaun

 

[wave4mer]

Ok after some thinking about what I need 4Ghz for I coldnt think of anything apart from BOINC number crunching and I cant get it stable @4Ghz so the 4G club will have to wait till my next build ( well at least x3 core will anyway) this is what ive decided to settle on as voltages are a close to mormal as possible to keep the temps down, was getting way to close to 60c on prime 95 so Ive decided to give myself some headroom and these are the setting that seem stable for now...

CPU @ 3500Mhz FSB 250 x 14 CPU core Voltage 1.4
CPU-CPB enabled @4125Mhz CPU core Voltage 1.475
CPU VID normal
NB +0.2v @ 2500Mhz
AMD C&Q enabled
SmartFan enabled


Temps idle 21c -----------------100% load prime95 blend 45c-51c


So I get the best of both worlds when Im number cruching all 6 @ 3500Mhz 44c-50c
When Im gaming 3 cores @ 4125mhz 32-36c


well I think thats ok what about you guys

Im pretty pleased, I think 4G on all 6 was pushing it on Air with 7 series AMD board & DDR2 RAM

cheers for your help and also to Martin on his own thread too

 

[wave4mer]

Well I have finally settled on a 27/4 setup, 3.8 is quite comfortable for prime and intel burn test.. will test using BOINC & SETI overnight to check for stability, if it can do that then im happy its stable.. thank for you help everyone.

 

[Hagar]

I am following you up, will post some pics tomorrow, currently at 3510MHz (13 x 270) on six cores. TMPIN1 53C under prime95 and steady, core temps 43C, vcore in bios 1.4v, in CPUID 1.26v.
Memory at 1440MHz, HT and NB at 1890MHz all still slightly underclocked

andy

 

[dfour]

There is no point overclocking the HT it makes no difference to performance. Just try to keep it near stock speeds for max stability.

 

[Hagar]

There is no point overclocking the HT it makes no difference to performance. Just try to keep it near stock speeds for max stability.

That was my understanding, will try just the cpu multi later going up to 14x in two steps which will give me another 270 or 3780MHz. I would be more than happy at that with my current setup.

PS sorry if I hijacked your thread wave4mer

regards, andy.

 

[wave4mer]

no probs andy, go for it , im happy wioth my clock, just wish there was a way of uping my ram a little whist locking all other multiplyers

 

[Hagar]

no probs andy, go for it , im happy wioth my clock, just wish there was a way of uping my ram a little whist locking all other multiplyers

THe 890 board which I am using has memory multiplyers (DDR3) of 4x 5.33x 6.66x and 8x FSB I am using 5.33 x 270 currently which is as close to 1600 as I can get unless I increase the FSB further.

andy.

 

[wave4mer]

3.8 survied the BOINC seti number crunching all the way through the night highest temp 50c nice.... might try 3.9 havent decided yet