e4300 cant get above 275mhz on o/c

[Telboy73]

Hi every-one! This is my first post on here and im new to o/cing.

As the title suggests i cant get my e4300 past 275 fsb, i have the p5n-e sli mobo and have followed the unoffical guide to get where i am now (oc wise)but no matter what i try i cant seem to get past this 275 fsb wall!

as an example if i bump the fsb to 300 using linked/synched and run vcore @ 1.32 the system wont post and shows a black screen with the pwr lite still on but nothing else, the nb voltage is set to auto though i have set this manually as well and still no joy.

Im not sure where the problem lies at all and i hope perhaps that some-one can help!

thanx in advance.

also just to add that i have tried my ram at 4-4-4-12-2t and at 5-5-5-15-2t with stock volts(not sure how far my ram will volt up).

see my sig for system spec.

 

[gOJDO]

I think you are doing something wrong. Tell me these settings: vCPU, vDIMM, vFSB, vMCP, vSPP, PCI-e clock, RAM:FSB ratio, C1E, EIST, TM2, NX(executable) bit

 

[Telboy73]

Hi gOJDO, thanks for your prompt reply!

the settings are vcore 1.300v, vdimm 1.92v, nb 1.39v, pci-e clock 100, ram:fsb 1:1,
c1e & eist both disabled, tm2(not sure what this is)& nx bit is enabled.

i think i have done this right although not 100% sure.

 

[myocardia]

You most likely just need more vcore. Your other settings look correct to me, although I don't even know what TM2 happens to be. I don't believe my motherboard (a P35 chipset board) has that setting at all.

 

[Telboy73]

whats a safe vcore for e4300? i have had orthos stable at 2.5ghz for 6 hours no probs with a vcore of 1.3v though my t/junction temps were 65-67c at full load!

 

[The-Noid]

vcore seems a bit low.

200 fsb chips also have problems on the 650i/680i boards becuase they run on the 200 fsb strap.

Youc an bsel mod the chips to hit a higher fsb.

 

[myocardia]

Originally posted by: Yoxxy
200 fsb chips also have problems on the 650i/680i boards becuase they run on the 200 fsb strap.

Oh yeah, I forgot about that. Good catch.

You can bsel mod the chips to hit a higher fsb.

Yep, and here's how.

Originally posted by: Telboy73
i have had orthos stable at 2.5ghz for 6 hours no probs with a vcore of 1.3v though my t/junction temps were 65-67c at full load!

You need to finish installing your heatsink, then. At 2.5 Ghz, and especially at 1.30v, you should be way cooler than that. You know that the heatsink should be installed with the motherboard removed from the case, don't you?

 

[Telboy73]

thanks for the help guys much appreciated!

what should my t/junction temps be then, as i understand it at idle my t/j temp is 39-40c
and my t/case temp is norm about 14-15c less thus then giving me full load at t/case of 50-52c using orthos.

if this temp is too high i dont know what would cause this as i only fitted the freezer pro last weekend and i stripped it down with the mobo out the case and reapplied some fresh as5, i also installed it with the fan sucking air from the front intake.

just checked pc probe and the cpu temp is reading 44 under load from orthos....

this is just too confusing all these diff temps.

 

[Tempered81]

Originally posted by: Telboy73
bump the fsb to 300 using linked/synched

i think this is your problem

 

[Telboy73]

Originally posted by: jaredpace

Originally posted by: Telboy73
bump the fsb to 300 using linked/synched

i think this is your problem

hi jaredpace, did you mean the 300fsb or that it is linked and in synch mode?

 

[Telboy73]

quick update: just upped the vcore to 1.35 and tried 300, instead of no post at all it now posts to the asus sign and either freezes or keeps trying to boot!?:|

the other thing is that i think the vcore is too high for such a modest increase seeing as it runs at 1.3 on the vcore now

Would i have more luck if i changed to my p5b e?

 

[Tempered81]

that it is linked/synced 500mhz fsb should be attainable with that board, and a low multi

 

[Telboy73]

so i should set up through unlinked and consider dropping my multi?

what vcore should i start with? at the moment my vcore is at 1.30v running at 275fsb.

oh cheers for your help!

 

[Tempered81]

keep it at 9x, try your vcore at 1.395. disable "sync/linked" mode. disable those other options for c1st tm2 spread spectrum.
you can try increasing your NB voltage just a little and change the vdimm from 1.8 to 2.1

put your fsb as high as you need. dont go over the spec of your memory. if its 533ddr2 that maybe causing your freezes. if it is, use a different memory divider ratio

 

[Telboy73]

cheers for that jared, will try that in the morning & let you know the results(10pm uk,time to sleep!)

 

[Telboy73]

Originally posted by: jaredpace
keep it at 9x, try your vcore at 1.395. disable "sync/linked" mode. disable those other options for c1st tm2 spread spectrum.
you can try increasing your NB voltage just a little and change the vdimm from 1.8 to 2.1

put your fsb as high as you need. dont go over the spec of your memory. if its 533ddr2 that maybe causing your freezes. if it is, use a different memory divider ratio

ok i followed your advice and tried the above settings and it is still the same.

with my ram i have timings of 5-5-5-15-19 running at 667 and prior to that was using timings
of 4-4-4-12-15 running at 533(this is what cpuz showed as spd settings).

I am a little concerned how-ever with regards to the temps for the cpu, when under load using orthos(the gromacs test)@2.5ghz my temps in core temp 095 show between 60-67c t/junction and around 15c less through speedfan which i believe is showing an estimated t/case reading, this is when the vcore is at 1.300v!:frown:

So i think i wil have to find out if these temps are ok before i carry on.

thanks jaredpace

 

[Team42]

Telboy,

67C under full Orthos load for an e4300 isn't a major issue. That's just above "warm" for that processor. My CPU is running at 333 MHz x 9 with Vcore of 1.4625v (in BIOS) shown as 1.424v in CPU-Z at idle and 1.392v under load. The system is stable after 10 hours of Orthos and it peaked at 66C. If you need to increase your CPU frequency, you'll probably need to increase Vcore. I wouldn't recommend going above 70C under load though. Make sure your cooling is sufficient.

Good luck

T42

 

[VirtualLarry]

Originally posted by: myocardia
You most likely just need more vcore. Your other settings look correct to me, although I don't even know what TM2 happens to be. I don't believe my motherboard (a P35 chipset board) has that setting at all.

Intel Thermal Monitor 2 - a new throttling technique added with the C2Ds. Recommended keep it enabled, as it keeps the chip from burning up.