Some CPUs hitting 4ghz easy?

Hmmm, well tried the things listed here that I hadn't tried before (Spread Spectrum disabled, Static Read Control disabled) and I managed to get to 3.4 GHz (1.5v bios / 1.45v load), but 3.6 GHz (9*400) crashes prime 95 before I even have the chance to get the second instance running. This is with 2x 240 mm radiators running CPU>rad1>GPU>rad2, D5 pump, MP-05 SP SE and MCW60. RAM is set to 1:1 5-5-5-15 2.1v and should be able to handle it easy. Chipset is 1.45v, which is the max. Advice? And I mean the concrete kind, not the dismissive "your-style-is-weak" kind

 

G L i think your cpu need more voltage , in order to run mine at 3.6 iuse 1.52 Bios 1.50 real , theres some pencil and volt mods for your mobo here. I also have an Asus P5B board in my secondary rig and in order to make it run stable at high clocks i did the pencil Vdroop mod. heres the guide , it works in the P5B-E also:http://www.xtremesystems.org/forums/showthread.php?t=114076

Good Luck.

 

^^^i agree.i had to run 1.55v in bios to get my 6600s to run stable at 3.6.the vdroop mod may help some as well.thats a pretty big drop from bios to load.

 

I actually did that, if it worked it was something fairly minor. I had seen droops closer to .1v before, so I think it may have helped on the order of .03v... or perhaps I just need a better pencil. Next time around I'm getting a drop-free board even if costs me $300 to do it, or at the very least I'm doing the mods before I strap on all the waterblocks and tubing. If its just matter of vcore I think I'll forget it for the time being.. when I see a firm penryn ETA (and not the XE kind) I'm consider OCing this one into the ground a few months prior.

Or is 1.5/1.55 not considered "high"...?

 

All depends on the cooling used to cool properly the cpu at high voltages , for example i can run my C2D E6600 at 1.55V with temperatures around 38C , cpu lap and heatsink. Good Luck G L.

 

Hah, I have a hard time feeling my temps are under control even with fairly high-end water, because every monitoring program I try spits out a different temperature, even though they are must all be getting their readings from the same integrated thermal diode. Any consensus on why this is and what to trust?

 

personally i dont think so.i ran both of my 6600s at 1.55 24/7 on water.the one i have now is a dog tho and a hot one at that.it idles at 42c at stock(1.275)!so if heat isnt a problem(from your wcing loop it doesnt sound like it is)i wouldnt hesitate to up the voltage if it stabilizes your oc.

 

I have trusted speedfan as recommended by john the mod. Its as accurate as core temp. Intel tat does not read correctly as stated by john also.

Good day.

 

i only use coretemp and speed fan.i get the same readings from both.i get really screwy temps with this 6600 for some reason tho.the difference between idle/load is only 5c(40c/45c)?
btw i can appreciate the droop you mentioned earlier.my p5b droops .8-.9v underload!time to do that mod i think.i had no idea it was that bad.btw what did you use to measure the cpu voltage GL?im using cpu-z and asus probe2.they both show 1.21-1.22 underload with 1.3v set in the bios.

 

Volts, CPU-Z says 1.213/1.4 and Asus 1.46/1.4. Idle on CPU-Z is way off for some reason.

Temps, CT 29/32 & 46/46, TAT 32/33 & 42/44, Asus 38 & 54. I guess I'll stick with Core Temp from now on. That was just 30 seconds or so of dual-prime 95 load, but the good news is that it doesn't seem to creep up a whole lot from there. Actually I'm pretty happy with either CT or TAT, it was the Asus temp that was really depressing me.

My Setup. The rads are BI:X which aren't the best, but I presume should do the job. No didn't lap the block or IHS, lazy me... I'll have to look into that. The fans are Antec tricool, which I got because I was thinking I could change from quiet to loud without losing all the LED power, then fine-tune with my fan speed controller, only to find they sound like crap the moment I dial them down any at all (maybe a rheostat would do better?) Right now the top are low speed or 39 CFM, the bottom medium or 56 CFM, all exhaust which is the motivation behind the 22 cm fan on the side. Turn them all up to medium and the whole thing roars. I might look into some of the more high-end fans.

 

very cool rig GL!looks very clean,i especially like the way you mounted those rads.
those temps are top notch!i wouldnt sweat upping the voltage to 1.55 at all.i liked the bix2 i had.the only drawback really is you need high cfm fans for them to shine(which can be a pain).i cant say if a rheostat would help with those fans.ive never used them so i cant really say what they will do with one.ive found that high cfm fans are kind of loud even on a fancontroller or rheostat tho(no matter the setting).
the only thing i use asus probe2 for is voltage.other than that its very innaccurate.it reads from the mb rather than the cpu so the temps are always off by 5c-8c for me.

 

Awsome looking rig there G L , very nice. I like it , like maxfly i would not trust probe 2 for temperatures on my P5B also , nice and clean set up G L , sad i dont use cases anymore I run my rigs on an open bench enviroment. But I would not mind having a case like that. Wich case its that one G L ? and where I can find one to buy?

Good Day.

 

I'm using Everest Ultimate Edition 07 and I find it much more accurate. On 2 other systems I put speedfan on it puts out random temps over 100c.

 

Thanks, I made the case... well, I got the panels cut to size at Tap plastics and cut out the holes and such and glued it all together. I had some thought about trying to get some laser cut and sell them on ebay, until I realized I'd still have to assemble them by hand and if C3 or whoever decided to make something similar but naturally more professional looking I'd be way out of business about 2 seconds later.

 

Good Stuff G L , you have great skills there , turn out awsome looking.


Good Day.

 

G L. Did you already tried to max your FSB lowering the multiplier?

And btw, can you say the CPU batch?