Weird 1700+ Overclocking. AXDA1700DLT3C - JIUHB - 0311XPMW

[BDSM]

This cpu will do about 2 ghz. Maybe a few mhz more at 1.52 V actual core and at around 39C idle with an AX7 + papst 12 db fan. I can get it stably to around 2080 mhz at this voltage.. over that NOTHING helps..
I tried raising the voltage all the way up to 1.9 volts.. But this thing even refuses to post at anything over 1.75 volts even if I set it to 1000 mhz core.

I can't eek out one extra mhz out of this cpu by raising the core voltage!!!

Anyone have any clues about this?.. It "feels" like it could go much farther.. I actually got it to boot into windows at 2.3 ghz at 1.6 volts. But then it froze and after that I had to clear the cmos to revive it!

I'm wondering if this could have something to do with the mobo (NF7 2.0) cuz it seemed more stable and easy to overclock on the Asus a7v333 I used before.. I didn't test it any higher than 2083 mhz on that mobo though cuz that's the highest I could go with pci and agp in spec (12.5*166).

Anyone got any clues?

I'm thinking about getting an SLK 900 with a 40 cfm fan and some better thermal paste.. That should lower my temps maybe 3-5 C.. Dunno if that will make any difference for overclocking though.

 

[INGlewood78]

Originally posted by: BDSM
This cpu will do about 2 ghz. Maybe a few mhz more at 1.52 V actual core and at around 39C idle with an AX7 + papst 12 db fan. I can get it stably to around 2080 mhz at this voltage.. over that NOTHING helps..
I tried raising the voltage all the way up to 1.9 volts.. But this thing even refuses to post at anything over 1.75 volts even if I set it to 1000 mhz core.

I can't eek out one extra mhz out of this cpu by raising the core voltage!!!

Anyone have any clues about this?.. It "feels" like it could go much farther.. I actually got it to boot into windows at 2.3 ghz at 1.6 volts. But then it froze and after that I had to clear the cmos to revive it!

I'm wondering if this could have something to do with the mobo (NF7 2.0) cuz it seemed more stable and easy to overclock on the Asus a7v333 I used before.. I didn't test it any higher than 2083 mhz on that mobo though cuz that's the highest I could go with pci and agp in spec (12.5*166).

Anyone got any clues?

I'm thinking about getting an SLK 900 with a 40 cfm fan and some better thermal paste.. That should lower my temps maybe 3-5 C.. Dunno if that will make any difference for overclocking though.

Seems maybe there's some other limiting factor involve...whats ur RAM, PSU, etc

 

[Jeff7181]

Sounds like you just found the limit. I don't believe the DUT3C stepping is a 1.5 volt chip, I believe it's 1.6 or 1.65.

Could be a RAM problem, what kinda RAM do you have?

 

[Corporate Thug]

DUT3C is 1.6 V

 

[BDSM]

Hey there Mr's.. thanx for the replies!

My bad there.. it's a dlt3c!

I also though there must be some sorta limitation somewhere else other than in the processor itself.
I am using Twinmos pc3200 ram (winbond bh-5) 2 256 meg sticks.
Psu is a stock chieftec 340W. Voltage reading seem very good with this psu.. Just about nothing is dipping under what it should be.

Another really weird thing I discovered is that it won't even post at 1.65-1.725 volts at 2 ghz.. It will however post at 2.1-2.2 ghz at those voltages!!
It will post at any frequency at 1.75 volts now.. but anything over 1.75 v.. it's dead.. no post at all..weird!

Is this weird or what?.. Something is REALLY fishy with this processor!!

 

[rogue1979]

Are you sure you aren't power supply limited?

 

[BDSM]

Hello Rogue.. No I'm not..But I only have 1 radeon 9000, 1 harddrive, 2 cdroms and a few fans in this box.

 

[BG4533]

What are your temperatures? It is possible you are running too hot and that is causing problems. It would explain why adding extra voltage wouldnt help you get any higher.

Brian

 

[BDSM]

Hey BG.. temps are 39 C idle (at most. about 36,5 ifit is a cool day).

Load= about 56 C

 

[BG4533]

If those are your temps at 1.5V I cant imagine them at 1.9V. They don't seem quite high enough to limit you to 2GHz, but I think they may be responsible for holding you back a bit. Do you have a stronger fan than the papst to test on youtr heatsink? Anyone else agree?

Brian

 

[pelikan]

I totally agree. When the system locks up it is usually heat related. While 56C is find for a cpu running stock, they get real sensitive while overclocked. Mine won't pass prime over 50C. And those DLT chips in particular run hot, so I don't think that Papst is going to cut it. The cpu looks good, getting to 2000MHz on stock voltage. Maybe try a more powerful fan, or a variable speed fan.

 

[BDSM]

Alright.. thanx.. I am going to order an SLK 900 and some of that Sheng Fui paste. I'll let ya know what the results are.

Thanx.

 

[BDSM]

Just a li'l update. This chip IS weird!

I haven' gotten my new hsf or paste yet.. but now this chip is prime stable at 2100 at 1.54 actual Vcore. And it will boot into windows without a problem at 2200 but it will fail prime at once. It will run prime fine at 1.65 volts now until it gets too hot.

It seems the chip is changing over time.. Weird!

 

[BG4533]

Sounds even more like a heat problem. You also mention keeping your AGP/PCI bus in spec in your first post. All nForce2 boards should automatically lock them or give you the option to lock them so you dont have to worry about it. Keep us updated as to your progress.

Brian

 

[BDSM]

Hey there BG and thanx for your reply!

The agp/pci in spec thingie was for my old mobo, the a7v333.

I'll keep u posted.

 

[Killrose]

I'd say it's a heat and PSU issue. What is your PSU voltages on the 5+ and 3+ while running? And what are the combined watts total listed on the PSU for these (2) rails? Should be at least 185watts.

 

[Corporate Thug]

i think the CPU may have just reached it's limit

 

[BDSM]

Hey Killrose.. they are 3.38-3.41 and +5 = very stable at 5.08

I dunno what the "combined watts" are. I just know it's a chieftec 360W psu. The rest of the voltages are also within spec.

 

[BDSM]

Hey everyone.. Just wanted to say that I am at 2300 mhz stably now.

I took a different approach to get here from what I first planned though.. I got an enermax 120 mm fan and some AS3 instead of AS2. The 120 mm fan is very quiet and still cools great and since it's so large it sticks out a good bit from the hs so it blows a great deal at both the NB (which I only have a zalman nbj32 heatsink on now) and on the memory as well.

Works great and only cost me half of what a new Slk 900 woulda cost me!

 

[BDSM]

Hmm.. I think this chip still has more to give.. Extra cooling will be needed to get there wihout excessive noise.. gah!

I'll have to buy that slk900 after all.

 

[BDSM]

Alrighty. I have the slk 900u installed now and I am at 2400 mhz now. I have been priming for about an hour and she's still going strong @ 44C. I've had to turn up the case fans and the 120 mm cpu fan a bit but I still consider the system to be quiet. The actual voltage is 1.74-1.76 V.

She will boot and run prime at 1.84-1.86 V but will fail within a minute or so. Also I have to turn the cpu fan into a jet engine to make it run at this speed!!
The 900u really kicks ass. There is about 4.5c difference form the ax7 I used be4!!
I got some shin etsu today.. I might try it tomorrow.

Anyway.. it seems like the 0311 wasn't too bad after all. At least not the one I got!

 

[infinite012]

Glad to know you got up to 2.3GHz. I've been having some weird problems of my own, also. I bought a 0310 WPMW 1700+ and it won't go any higher than 2.2GHz with a "safe" voltage. 2.2GHz is prime95 stable, game stable, everything I throw at it stable at 1.525V in BIOS (1.57 actual, Asus sure loves to overvolt...). 2.3GHz won't run prime95 stably even with my VCore at 1.65 in BIOS (1.7 actual). Anyone know of a cure?

Temps @ 2.2GHz (HHC-001-FAN IS SET TO 3300 RPM) : 46C from temp probe (physical probe next to core) idle
Temps @ 2.2GHz (HHC-001-FAN IS SET TO 6000 RPM +/- 10%) : anywhere from 36 to 40 idle

full load and the cpu will go anywhere from 48 to 52C (high and low speed, respectively).

Got any suggestions?

A7N8X Deluxe rev 1.04
2x256MB Corsair TwinX PC2700LL running 200FSB 100% with CPU
Athlon XP 1700+ (200x11 crunching and prime stable)
PCI/AGP locked to 33/66
4 80MM case fans set to silent
2 PSU fans - thermal controlled
420W turbolink PSU (came with the chieftec case)

 

[infinite012]

BTW, I'm just pulling your legs...I'm actually quite satisfied with 2.2GHz, just wanting to know why 2.3GHz hates me. Maybe its the ram?? haha don't answer my question...please...for the sake of your time and my time.

 

[BDSM]

Wel try a bigger heatsink with a bigger fan. 120mm is good And give it more voltage. The closer ya get to the limit of the processor the moe juice it will require to get higher. It's up to you to decide if it's worth it or not.

 

[Overkiller]

Guys guys guys...

a couple of things to put into perspective...

A) Doesn't the stock 1700+ only run @ 1400?...so being *not that satisfied* w/ a 600 mhz overclock or a 800 mhz overclock sounds kinda bad - yes i know *most* can overclock that high but still! that's a nice overclock!
B) isn't the chip only like 60ish$...and with that 600 mhz overclock it puts it into territority of chips that are 150+$ (too lazy to look up actual prices )

just my .02 cents...other than that good job on the overclock..

besides cooling, psu, just allow the sucker to burn in after each oC. for a few days..i.e. run a distributed computing client or prime95 for a few days. then oc. a bit more...same thing. its amazing what a burn in can do