Opteron 170 CBBWE 0550UPMW

[alpha0ne]

1.42 vcore for 2700.

Fails prime within a few minutes @ 2800 with 1.42v. Tirying more volts but anything over 1.5 leads to 50c+ load temps. 2.8 fails after an hour or so (core 0) core 1 still going.

I've read that altering the driving strength can help stabilize Oc's but my board doesn't have the same options. The options I have available are Drive strength (disabled or weak) and DATA drive strength (15%,30% or 45% weakened)...anyone recommend a setting please (running corsair 3500ll)?

Cooling with TTBT.

The Corsair 3500ll are very hard to settup right though once you get the right combination they should be very good, its just a matter of trying every setting until you find the right one

[Ic3man]

Ic3man, is that a 165 or 170?

Its a 170...killed my 165 taking off the IHS

[no_n|ck]

Its a 170...killed my 165 taking off the IHS

heh, same here..i killed my 146 fpbw wich was doing 3.1
it was bad mounting of w block

[nealh]

Its a 170...killed my 165 taking off the IHS

well very nice result is that at 1.42v(bios setting or xp)...very low vcore congrats

and people were saying the 170 upmw 408L substrate did not do as well...2750@1.42v....

[Ic3man]

Bios and windows setting 1.42vcore-core 0 failed after 14hours. Upped vcore to 1.4275 in bios(reported in windows as 1.44) left it overnight currently 16hrs+

Cannot get anything above 2.7 stable as yet without using excessive vcore and even then it wont go past a couple of hours. I think my memory settings are holding me back tbh. Currently using 2-3-2-6 on a 166 divider, tried slackening them a little to no avail. Its 3dmark 06,superPI32, S&m and game (BF2/FEAR/Farcry) stable @ 2.8 tho @1.42vcore.

[[timko]]

Ic3man, have you tried giving your ram an extra 0.1v to see if that makes any difference?

Also, what mem timings did you try slackening them to?

[Ic3man]

Running the memory @2.8v already, don't want to kill them (well not yet!) reports are that 2.75 is the 'sweet spot' for this memory..although tbh I havn't really noticed a difference between 2.6-2.8.

Tried:
2.5-3-3-7
3-3-3-8
3-4-4-10

Still no luck.

There are plenty of other memory related settings on this A8n32 that I havn't played with that 'may' make a difference such as:

Async latency
Read Preamble
Drive Strength (disabled, weak)
Data Drive Strength (15%,25%,45%)
..to name a few.

One weird thing I have noticed is that I appear to be more stable running a 133 divider than a 100 divider

also the NB-SB divider is confusing me..do i need to set it to x5 (1000) regardless of overclock or do I need to match it to the LDT (x3 - 600) when running @275htt x 10.

[Ic3man]

Just noticed aswell that my 12v rail is drooping to 11.65 and then fluctuates between that and 11.71 as reported through PC probe. My vcore is also fluctuating, 1.42 (as set in bios) will sometimes jump to 1.44. New PSU (hiper R 580w), hope its not dying on me. Will this cause instability or is this normal?

[THunDA]

also the NB-SB divider is confusing me..do i need to set it to x5 (1000) regardless of overclock or do I need to match it to the LDT (x3 - 600) when running @275htt x 10.

You want to adjust your LDT multi to make sure your total htt stays at or below 1000mhz..

At your clock above.. 270mhz you should have this on 3x..

[mongoled]

Starting to get a bit of stabilty with mine

Frequency: 280x10
vCore: 1.475 (set in bios)
timings: 2.5-4-4-8
Sync: 1:1



Nothing to shout home abt, at least looks like I have a chance on getting the 2.8Ghz i said i wanted



- EDIT -

Oh forgot to say, this is with

dram drive strength: 6
dram data drive strength: 3
Max Async Latency: 8ns
Read-Preamble: 5.5ns

[[timko]]

Async latency
Read Preamble
Drive Strength (disabled, weak)
Data Drive Strength (15%,25%,45%)
..to name a few.

The first two are measured in nano-seconds which means in order to "relax" these settings they should be increased. As for Drive Strength, is it just those two settings available (only disabled and weak)? There isn't a "strong" or "increased" option? If so, then try that.

Data Drive Strength on the other hand is labelled different on the DFI board that I have so I couldn't even guess at which one of those options would be better Leave it in the middle option for now (25%) and then try the other two settings as a last resort... after you've messed about with and tested other settings above.

[Ic3man]

The first two are measured in nano-seconds which means in order to "relax" these settings they should be increased. As for Drive Strength, is it just those two settings available (only disabled and weak)? There isn't a "strong" or "increased" option? If so, then try that.

Data Drive Strength on the other hand is labelled different on the DFI board that I have so I couldn't even guess at which one of those options would be better Leave it in the middle option for now (25%) and then try the other two settings as a last resort... after you've messed about with and tested other settings above.

Drive strength are just those two settings (default - disabled)
Data Drive Strength defaults at disabled too.

[nealh]

IC3man....I thought S&M was a greater stress than Prime 95???

Hmm if all those other stablity test are good at 1.42v@2800..seems there must be something to tweak to get Prime95 stable..if not I would argue that 2800 is stable at 1.42

it has to be a memory thing....if you use a 133 divider what ram settings are you using

try setting ram to 133, 3-3-3-10-2t, idle cycle limit 256...I know not fast setting
data drive strength, preaamble..5/1 or 6/1

wonder if this would help to get things stable...I do not think 2700 is the wall if you can boot and run those other test at the low vcore and 2800..I would expect the cpu just needs a little help

[fareastgq]

IC3man....I thought S&M was a greater stress than Prime 95???

Hmm if all those other stablity test are good at 1.42v@2800..seems there must be something to tweak to get Prime95 stable..if not I would argue that 2800 is stable at 1.42

it has to be a memory thing....if you use a 133 divider what ram settings are you using

try setting ram to 133, 3-3-3-10-2t, idle cycle limit 256...I know not fast setting
data drive strength, preaamble..5/1 or 6/1

wonder if this would help to get things stable...I do not think 2700 is the wall if you can boot and run those other test at the low vcore and 2800..I would expect the cpu just needs a little help

actually, if it's a dfi board, it may be your board's pwm temps. u might have to cool the hot spots better. IMO though, if it games for hours on end, it's stable, no matter what any stress test says.

[tHe_jOkeR]

have you tested your 170 upmw..what substrate number?

cant test, boxed cooler
next month watercooling, u mean 434L <---this?

[nealh]

cant test, boxed cooler
next month watercooling, u mean 434L <---this?

yes..just looking for more info on those chips

[nealh]

actually, if it's a dfi board, it may be your board's pwm temps. u might have to cool the hot spots better. IMO though, if it games for hours on end, it's stable, no matter what any stress test says.

wow..165@3000 what is your vcore and cooling

[-aDaM^]

Awesome

agreed.

[Pete@X]

My UPMW was good for a bit over 3GHZ, now one of my 0550VPMWs blows really smoke after the lid is off and he get´s chilled water ->

http://www.xtremesystems.org/forums/...postcount=2361

So far 3,2GHz ... but i`m still testing

[fareastgq]

wow..165@3000 what is your vcore and cooling

I'm on water, was using a weapon 302 core, a g5, and an iwaki md-20rzt. v-core was at 1.6v, 1.6 makes it game/prime/3d etc... stable 24/7. Could prob suicide shot higher but there's no point in that for me. I'll be using what's coming in my sig soon

[fenomenhaa]

New opty 408L 2xx

[nealh]

fenomenhaa

that is one awesome cpu 2950@1.456vcore(1.48-1.5 bios??)..is this on air, water , phase???

[fenomenhaa]

fenomenhaa

that is one awesome cpu 2950@1.456vcore(1.48-1.5 bios??)..is this on air, water , phase???

it's on water water temp 15-20c in bios ı think 1.48 but not sure

[matt samoohi]

how much u would suspect that 408l oc under the big typhoon i got one 170 upmw 0550 408l shipping to me for my first ever build i saw someone get 2850mhz on air at guru3d

ALso water only increases overclocks when u wanaa keep temps down like if u wanaa push more than 1.6volts if not would i be able to run the same cpu on a big typhoon higer temps at 2950mhz 1.48v?

[nealh]

I would be thrilled and overjoyed to get 2800 on air at a reasonable vcore