HELP!! Can`t get past 3.5GHZ on E6600 / Watercool

smegle

smegle

smegle

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Joined
31 Dec 2006
Posts
190
Hi everyone,
I`m currently pulling my hair out with my overclock.
Spec: e6600
p5n32 e sli plus
watercooled system
pc5400 ram (unlinked running at oem settings)


i`m at 3.5ghz stable @1.53 vcore but anything more and it reboots (no bsod) after about 4 mins small ffts on dual prime 95.
NB=1.50
SB=1.5
VTT= 1.55
FSB 1576 (x9)

I`ve tried upping all of the voltages above to no avail.
I`ve even tried the vcore at 1.7volts!! (load temps 70 deg :p )
Still rebooted.

Can anybody help?
Cheers,
Smegle
 
tried upping the pci-e frequency to 105mhz?

Tried upping voltage to the chipset/fsb?

if so, prolly just one of those pants cpu's, happens dude...
 
V|per said:
tried upping the pci-e frequency to 105mhz?

Tried upping voltage to the chipset/fsb?

if so, prolly just one of those pants cpu's, happens dude...
Click to expand...

haven`t tried upping the pci frequency i`ll try that now.
This chip has always ran hot but this wall at 3.5ghz seems to be a big bleeder!!
 
small fft's are a cpu stress test. not sure that pci-e volt's will help. v-core might be worth a look though.

[edit]
sorry, see you've already bumped to 1.7v - which is quite high, V|per may be right, you may have hit your chip's physical limit.
[/edit]
 
yep even with the pcie to 125 i had no look.
Really can`t think of anything else to try.
ah well, how much are quad cores again? :D
 
smegle said:
yep even with the pcie to 125 i had no look.
Really can`t think of anything else to try.
ah well, how much are quad cores again? :D
Click to expand...


:) :) :)

3.5 from a 2.4 unit is no disgrace (even with w/c) - and I'd hold off new purchases until Q3/Q4 given AMD's new chippery and Intel's penryn emerging...

good luck in the meantime!
 
speaking to PaulL 64 he wonders whether it could be the psu. Currently runing a 650w (EZ cool) but have:
8800gtx o/c`ed
e6600 (3.5ghz)
4x 120 mm fans
Waterpump
1 200mm fan
1 ram cooler

Orthos doesn`t fail, the computer just reboots during orthos (you can hear to processor stop processing before re booting)
has anybody else has this problem whilst trying for higher o/c`s?
 
I don't know about the p5n32 e sli plus, but my AW9D-Max allows me to set safe limits for warnings and shutdown if any of various temperature thresholds are hit or exceeded.
For example I get a warning beep if cpu temps hit 75, and the mobo will shutdown at 85 - these are configurable, and it is shutdown not reboot.

Do you possibly have any settings like this on your mobo?
 
what mk17 says sounds right, your temps are probably getting real high and mobo is shutting/rebooting the comp. it could also be that your oc is unstable and that's showing up as a reboot
 
58°c isn't that high, mine ran at 80°c for a couple of hours (i hadn't noticed by the way... i didn't actually LET it :eek: )
 
when it reboots when orthos is running the temps are fine. Both NB and cpu.

mobo never gets above 40 deg. its w/c`ed northbridge and noctua with fan on sb
 
sounds to me like a cpu limit.. 1.1ghz oc isn't exactly shabby and the mid 3ghz's are where most c2ds give up, my 6700 doesn't like much more than 3.6 without phase.
 
matt100 said:
sounds to me like a cpu limit.. 1.1ghz oc isn't exactly shabby and the mid 3ghz's are where most c2ds give up, my 6700 doesn't like much more than 3.6 without phase.
Click to expand...

the thing is though my tempos are nowhere near that of the throttling temp of the cpu, so surely temperatures can be disregarded out of the equation.

Cpu rounding ability doesn`t decrease as temperature rises does it?
 
there's no hard and fast point where things stop working. For a start your mobo might not be able to handle the fsb, for another thing it could be your ram, it could be your psu, it could just be the cpu isn;t capable of operating at that fsb regardless of temp.

After all if temps were the only limit then I wouldn't have hit a brick wall on my old x2 3800 at 3ghz when it was still sub zero at 100% load.

Tried upping the fsb termination and nb voltage? they are the route to the final few mhz from what I can tell.

If you want to rule out the ram/mobo then drop your multi to something silly like 5 or 6 then whack up the fsb, that'll show you the fsb limit before you get close to the ghz limit.
 
I'm no motherboard expert but I don't think the one you have is a renowned clocker either, try a p5b delux or an nv 680i board.. but seriously, you're probing the limits of most 6600s, I've seen a few at 3.8/4ghz maxed out at high vcore with top end watercooling loops.

is it really worth the hassle for an extra 200mhz?
 
matt100 said:
there's no hard and fast point where things stop working. For a start your mobo might not be able to handle the fsb, for another thing it could be your ram, it could be your psu, it could just be the cpu isn;t capable of operating at that fsb regardless of temp.

After all if temps were the only limit then I wouldn't have hit a brick wall on my old x2 3800 at 3ghz when it was still sub zero at 100% load.

Tried upping the fsb termination and nb voltage? they are the route to the final few mhz from what I can tell.

If you want to rule out the ram/mobo then drop your multi to something silly like 5 or 6 then whack up the fsb, that'll show you the fsb limit before you get close to the ghz limit.
Click to expand...

fsb termination, is that the cpu vtt voltage?
 
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