DLT3C voltages

[Como]

What have you guys done for save voltages in a 1700+ DLT3C?

i have mine, it gets too hot for me with anything past (edit) 1.6V(/edit), but i have a feeling my SP-97 isnt installed correctly....i shouldnt be getting 45+ load on it, even with my no name fan.

i wanted a poll but i cant make one...dunno how...lol

[jonspd]

6volts:mad:


stock would be 1.5 and 6 volts would be 4xstock voltage the chip would blow @ about 2.5-3.0volts on air IMO

[c627627]

Big thanks to hitechjb1 whose collection of posts should probably be made into a sticky.


1. Increase of 60 MHz at the expense of increasing 0.2 volts is not recommended.

2. Assuming expected CPU life time is 10 years, 30% overvolt statistically reduces it to six years.

3. 30% overvolt for DLT3C's is 1.95 volts and for Bartons and DUT3C T-Breds, about 2.1 volts. (Remember to keep the on die CPU temperature under 65 C.)

4. Highest attainable stable Overclock cannot be reduced within months provided on die CPU temperature is kept under 65 C, however:

5. CPU weak spots not discovered during manufacturing stress tests may lead to permanent failure sooner than average:


Originally posted by hitechjb1
A 10% increase in Vcore, would shorten the failure time to 83% of nominal failure time.
A 20% increase in Vcore, would shorten the failure time to 69% of nominal failure time.
A 30% increase in Vcore, would shorten the failure time to 59% of nominal failure time.
A 50% increase in Vcore, would shorten the failure time to 44% of nominal failure time.


Nominal failure time is assumed to be 10 years at default voltage.

[Como]

MY BAD! that was suppsoed to be 1.6, not 6....edit time!

[ChillPhatCat]

I've been running it at 1.925V for the last 4 days... load temps of 53-54*C and Idle around 44*C

[nut581]

1.725 for 2.3Ghz (11.5x200) on an overclocked 1700+, 45'C load temp (running folding@home 24/7).

at 1.7V folding would have problem (early end unit .. basically failed simulation), but at 1.725 it's all good.

when you're testing how stable your overclock is, I'd recommend playing 3d games like UT2003 or run folding@home overnight .. before I knew folding, I take stability for granted.

fold if you haven't :D

[Como]

Sorry, i folded for a few hours on my old system, but having dialup and my computer is in my room, i cant. apparently its internet based or something, i cant make it work w/o a connection.
cant play games cuz i dont have a video card yet iether...wont even try to load postal 2 :(

1.925?! holy crap! how comre your only at 110X11?...i thought 1.8 would be max before it just blew to overvolting, guess i thought wrong!
now i cant wait to lapp this sucker and bolt it down tight...maybe i can get safe temps with 1.8V *evil grin* that ought to get some good speed....(okay, so i'll just up the voltage when i HAVE to, but still...its an evit thought!)

[nut581]

you can fold with dial-up, and they only require internet connection like 10 minutes every 9 hrs or so .. and with automatic dial-up solution, you won't even have to touch a thing for folding :D .. if you need more info about this, just drop me a PM, I'd be more than happy explaining it to you.

but anyway, I agree that 1.85V is the highest healthy vcore for air cooling solution .. that's with slk-900a and 5000rpm thermaltake SFII ..

[Susquehannock]

I have two dLt3c chips here. One 1700 & one 1800, both are
0307 VPMW.

So far both top out just above 2.5ghz at 1.85v
in my Soltek.
Doide temps with the SLK-900a are 33c idle & 42c load.
Socket temps are 39c idle & 51c load.

The ABIT kr7a seems to be able to power
them at 2.5ghz with only 1.6v. :confused:

[Como]

first off, dialup cant be accessed from my new computer. np line in my room, fatehr removed it. nor can i afford a modem, or let it auto dial. we have strict internet times :( so my dlt3c wont see the net till i get a job and start paying for broadband.

2.5 at 1.6?! dayum, i wish i had known that before i got my NF7-S...

oh well...2.5 at 1.85 would be sweet for me, my sp-97 should keep it cool at that voltage when i lapp it and get better airflow...and a faster fan for it...

[nut581]

Originally posted by Como
first off, dialup cant be accessed from my new computer. np line in my room, fatehr removed it. nor can i afford a modem, or let it auto dial. we have strict internet times :( so my dlt3c wont see the net till i get a job and start paying for broadband.

2.5 at 1.6?! dayum, i wish i had known that before i got my NF7-S...

oh well...2.5 at 1.85 would be sweet for me, my sp-97 should keep it cool at that voltage when i lapp it and get better airflow...and a faster fan for it...

no problem :)

2.5@1.85 is really good IMO .. I have 2 DLT3Cs, one will max out at around 2450Mhz@1.85V, the other will only do ~2350Mhz at that voltage .. I wouldn't use more than 1.85V tho ..

[Como]

okay, my DLT3C is a JIUHB 0308 DLT3C, got it from "NinjaZX6R", any idea what the range on this peticular chip is? i'm hoping to hit 2.5, but i'd be happy for reg.use with 2.3...but i have to get a good cpu cruch bench when i bench against the dual xeon being built in this class...man, they've got like 8G's in this thing, i'm hoping to get within 80% of the cpu power, although i know it wont happen....but still.

must get sandpaper...and thermal epoxy! (not for the processor, thats what AS creme is for...lol)

[fusionpit]

I am running my JIUHB 0310 DLT3C at 1.625V, 11x166 for now, but it is stable at 200x11.5 at 1.650V.

[ChillPhatCat]

Originally posted by Como
okay, my DLT3C is a JIUHB 0308 DLT3C, got it from "NinjaZX6R", any idea what the range on this peticular chip is? i'm hoping to hit 2.5, but i'd be happy for reg.use with 2.3...but i have to get a good cpu cruch bench when i bench against the dual xeon being built in this class...man, they've got like 8G's in this thing, i'm hoping to get within 80% of the cpu power, although i know it wont happen....but still.

must get sandpaper...and thermal epoxy! (not for the processor, thats what AS creme is for...lol)

Well I'll tell you this much, I was running my chip at 1.8V and 2.2GHz without a problem... it took that extra .125V to get that 110MHz out of it. It plays games 100% stable and folds without a hitch but will error out of prime after about 8 mins. Seems to me that to get to 2.5 you usually need 2.0V and it's a good idea to switch over to water at that point.

I only started to go to 1.9+ because I hadn't heard of anybody damaging their chips at or slightly above that voltage... I hear that 2.1V will slowly degrade your overclock.

[james.miller]

mine happily chugged along at 2.37ghz, 1.725v

[Como]

so i basically dont want to break 2.0 + Vcore...i dont think it will be a problem, i wont ever run the risk of breaking 55C, i get edgy at 45 so i'll just make do with what i have....anyonee happen to have the same exact chip as me?