No response past a certain OC point

KNiVES

KNiVES

KNiVES

Soldato
Joined
4 Jan 2005
Posts
15,017
I've recently starting overclocking my CPU. It's an E6300 sitting with with 2xGB Elixir DDR2800mhz on an MSI 975x Platinum motherboard. The PSU is an Enermax Noisetaker 485w.

Everything is totally and completely stable (Orthos, gaming, diagnostic tools, etc) at FSB 381mhz frequency with ram/fsb at 1:1 ratio. Processer's at 2.67ghz, memory's at 762mhz and the computer runs stable as I've said before. Ram voltage is 1.8v, CPU voltage is 1.15v, I haven't touched those yet.

But then, whenever I even try to go over FSB 381mhz, there is no video signal, and no beeps. I have to reset the BIOS settings by pushing a little button on the motherboard. So currently the computer is tiptop stable, fit as a fiddle etc etc on FSB 381mhz, but refuses to do anything at 382mhz and over. What could be the reason behind this? Would upping either voltage help?
 
I upped the vcore to 1.2, previous setting was on 'auto'. I haven't upped the FSB or anything yet, I just want to show you guys the CPU-Z information in case I've missed something major.



Anything out of the ordinary?
 
To be honest the overclock you're getting at that voltage is amazing!

That's undervolting your CPU by quite a way, so it will be kicking out quite a lot less heat then it should be. Definitely up it, you should push past 3.0GHZ with no problems there :)
 
Unfortunately, I can't do it - my vcore is at 1.27 and the FSB is at 382 maximum. If either or both of those go up, my computer hangs on desktop after a few seconds. Just freezes completely. The temperate of the processer only hits 57 at the most though, which is puzzling. It's hardly going through fiery hell, so I have no idea why it won't go any further.
 
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What are load temperatures like on the higehst volts possible?

If they're pretty high then it's probably an issue with heat sink seating.
 
The highest volt I can touch without it crashing straight away is 1.27, which does 57 degrees under full load. I'm using CoreTemp as my temperature monitoring program.
 
It's an Arctic Freezer 7 Pro. I'll check out TAT. Thermal Analysis Tool isnt it?


Edit: TAT won't open for me. Even if I turn off 'force unsigned drivers on' in the startup menus, TAT opens for about a split second then turns off.
 
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Odd.

It sounds to me as though you may have seated the heatsink with a little bit too much/too little thermal interface material. I'll let someone else confirm this as I don't really know if that temperature is indeed too high.
 
The heatsink came with the thermal compound already applied. I didn't struggled to put it in, but I guess it's worth taking a look again.
 
Don't quote me on it :p I have no experience with c2d's really regarding temperature. It's just the only thing I can think of :\
 
Just a thought, could it be your motherboard? I've not really heard much about that chipset, could it be that it doesn't really overclock well?
 
That's a possibility, nothing on google about the MSI 975x Platinum being a particularly poor overclocker though.

Edit: It's just dawned on me that I haven't changed the CPU multiplyer yet :p

2nd Edit: Nuts, I can't seem to access the option to alter it.
 
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