Go Back   Hardware Canucks > PC BUILDERS & TWEAKERS CORNER > Overclocking, Tweaking and Benchmarking

    
Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old July 11, 2008, 04:44 PM
Rookie
 
Join Date: Jun 2008
Posts: 17
Default X48 Max Safe NB Voltage for 24/7 use?

Like it says in the title, I am looking for opinions on the maximum safe voltage I can run on my P5E3 Premium motherboard. I am currently running (3) 40mm fans strapped to the NB heatsink, but since this board doesn't report chipset temps, I am kinda nervous about my current Vmch setting (1.61v). I have tried less, but running the 9x mutiplyer to reach 4.0ghz at 450mhz FSB, required a bump from 1.57v when I was running at 3.8ghz. Adding to the load is the fact that I am running 2x2gb OCZ reaper memory, and believe me, I have tried reducing the Vmch, but the system becomes unstable when I do.

For anyone interested, I am running PL7 and the CLOCK TWISTER on STRING, as STRONGER made almost no difference in benchmarks. I really am interested to know who high some of you have run an X38 or X48 board for an extended period of time with or without board failures. Then I can decide if I should back it down to 3.8ghz

Thanks!
Reply With Quote
  #2 (permalink)  
Old July 11, 2008, 06:27 PM
Banned
F@H
 
Join Date: Jun 2007
Location: Edmonton
Posts: 1,628
Default

Anything above 1.65v starts to cause instabilities in USB on my board. I've not needed more than 1.55 for 520FSB though.
Reply With Quote
  #3 (permalink)  
Old July 11, 2008, 07:07 PM
Rookie
 
Join Date: Jun 2008
Posts: 17
Default

Thanks for the input. Are you running 4gb of memory? I was disappointed, for sure to need that kind of voltage for 450mhz FSB. The thing is, every time I hear people running about the same mem speed, and CPU speed as me, thye usually have a 2x1gb config, which is a, easier load for the NB. Also, what PL (performance level and clock twister settings are you running? Thanks!
Reply With Quote
  #4 (permalink)  
Old July 11, 2008, 07:25 PM
Banned
F@H
 
Join Date: Jun 2007
Location: Edmonton
Posts: 1,628
Default

I run 4gb, @ 1006mhz, 417fsb mostly. I havea qx9650, and this chipset is quite cpu limited with quads.

But my E6600 # 450mhz, 1.45v, 333mhz strap, PL @ 8. PL @ 7 requires 1.65v, but with the mentioned issues, and the lack of real-world performance benefit, PL8 is good for me.

E8400 @ 520mhz x9 needs 1.55v, again, PL8.

So maybe try that drop down to PL8, and see how much lower the voltage will go...
Reply With Quote
  #5 (permalink)  
Old July 11, 2008, 08:45 PM
Allstar
 
Join Date: Jul 2008
Location: Terrace, BC
Posts: 558
Default

Any sugestions on what to overclock a q6600 to speeds to match a 3870X2 to lessen bottlenecks? Also, what can I overclock 1000Mhz HyperX to?
I also plan on running air cooling, maybe with case side panel off.
Reply With Quote
  #6 (permalink)  
Old July 11, 2008, 09:10 PM
Banned
F@H
 
Join Date: Jun 2007
Location: Edmonton
Posts: 1,628
Default

400mhz ++ FSB most important. 3ghz + is ok.
Reply With Quote
  #7 (permalink)  
Old July 13, 2008, 10:21 AM
Rookie
 
Join Date: Jun 2008
Posts: 17
Default

Anyone else?
Reply With Quote
Reply


Thread Tools
Display Modes