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pII x3 740 -> x4 40 stable at 3.58GHz and 2.74GHz CPU/NB, how normal is fluctuation

post #1 of 4
Thread Starter 
This is the highest I've tried so far, and very pleased so far. Temps with the 2 90cm case fans running and the room is cool, made the CPU 43-44C, I guess thats the socket temp though.



17x210 ~ 3582 MHz @ 1.4003???V or maybe its 1.40003???V (don't know why HWmonitor says 1.43V)

13x210 ~ 2739 MHz @ in between 1.2-1.3V (I can't remember)
210FSB puts the RAM at 1680MHz @ 1.425V
9x210=1890MHz for the HT link





I ran prime95 on custom using 2800MB Ram for 11h 20 min, I will shut it down now and post this.



, and this time I watched an hour of a .avi movie in VLC, in the early part of the run, and used firefox sometimes like now, and uTorrent was running the whole time and AVG did its thing at some point. So aside from taking a little CPU usage from prime95, I'm glad they didn't seem to interfere.



As before, every so often, the whole thing jumps up a bit, for about a 1-5 seconds, as seen here





I just watched CPUz for 2 minutes, and it happened at ~1min for a second, and at ~1m45s for 4 seconds. Always to the same thing +/- about 3MHz on the CPU NB HT, so really the FSB jumps slightly.

On previous OCs, the same type of thing would happen. I don't know if this happened at stock, or unlocked to x4 40 at stock.

How common is this? Do I have some issues with the quartz crystal timing clock circuits?
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post #2 of 4
this is perfectly normal, voltages jump around all the time and so do clocks. this doesnt mean its unstable or anything
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post #3 of 4
Quote:
Originally Posted by jy360 View Post
this is perfectly normal, voltages jump around all the time and so do clocks. this doesnt mean its unstable or anything
Yeah, speaking for myself I don't like to see up/down movement like that but it always happens. Things just fluctuate like that when electricity is involved. I think it's great the Electrical Engineers can make it work and be stable at all!
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post #4 of 4
Thread Starter 
Well last night I reached 3.6GHz, I only went from 210 to 211, and didn't have to change anything else, 215 didn't work, but I never messed with volts. So I just take it slow from here, but theres more yet.





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pII x4 40 @ 3.72GHz NB @ 2.79GHz M4A89gtd PRO/USB3 Sapphire 6950 2GB nonRef 950/1520 @1.2V 4GB Gskill DDR3 CL7eco @1656 6-8-6-20-24-1T 
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pII x4 40 @ 3.72GHz NB @ 2.79GHz M4A89gtd PRO/USB3 Sapphire 6950 2GB nonRef 950/1520 @1.2V 4GB Gskill DDR3 CL7eco @1656 6-8-6-20-24-1T 
Hard DriveOSMonitorPower
WD Black 640GB SATA3 Windows 7 Ultimate BenQ 24" G2420HD 1920x1080 SeaSonic M12II 520W 
Case
TV stand on wheels + cardboard door 
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