Hehe, didn't see your sig carefully...... I'm running mine at 1.425v. Reason for that is that from this vcore onwards, the gains in terms of mhz is less and less.... you know, the point of diminishing return.....

No worries. It's just the app. Use other programs and you'll see that the ram speed don't fluctuate.....

Nope. I'm using Xigmatek S1283. Stock HSF can't go that high.....

Anyway, since you're also using the E6750 @ 1.35v, try higher OC. The E6750 can go 3.2Ghz to 3.3Ghz at 1.35v (stock voltage). Check your temperature though....

This post has been edited by kmarc: Dec 6 2007, 10:50 PM

Hmmmm...... you sure it is not due to other factors like the mobo settings or the ram settings?

Cool! The overclock, I mean. The temp is not so cool..... 65'c on what type of load? (What type of apps running)......

I guess it is ok if you max temp is around 60-65'c (for a stock HSF)......

Yeah, you can try to turn on C1E and EIST and see whether your rig is stable or not. If it is stable, then no problems running them.

Eh? Cannot adjust vdimm aaa? Make sure you press Ctrl+F1 when you're in the main bios page. After that, you'll get a whole lot of other options in M.I.T.....

Yeah, that's the problem with the E6550 with lower CPU multiplier. You need a good mobo to get higher bus speed......

No, when you pressed Ctrl+F1 in the main bios page, the additional options are in the M.I.T page, not the main bios page.

Don't set the vdimm to normal then. Default vdimm is 1.8v. So if you set it to default + 0.1v, the vdimm would be 1.9v, which is correct....

What's your CPU setting? Multiplier, fsb, vcore, vdimm, core temperature....

P35-DS3 - best bang for buck. Should be adequate for your proc. Dunno why some people don't like gaygaybyte......

Is your rig stable on orthos at that setting? At 3.4Ghz at stock voltage, that is already a good overclocked for the E6750. Most E6750 can only OC to 3.2 to 3.3Ghz at stock vcore. Of course, you have to determine your vcore first.... check it in bios.....

And yeah, the core temp is a bit high for stock vcore, maybe you're running at a higher value....

If you get "failed" for vdimm, why not manually set it to the default value i.e. 1.8v to see whether the "failed" still comes out....

This post has been edited by kmarc: Dec 13 2007, 05:48 PM

Vcore as set in Bios? Looks like you need quite a bit of voltage to go higher. Either it is the CPU or your mobo.... maybe higher vdroop?

If you already need 1.49v for 3.52v, you'd probably have to increase the vcore a whole lot more to achieve 3.6Ghz. Probably 1.55v to 1.60v...... which is definitely NOT RECOMMENDED!

For my E6750, now running 24/7 3.50Ghz @ 1.425v (set in bios).... see my sig....

No way you can know......

Not to worry. If you look at some of gigabyte's P35 mobo, some of them already have bios updates that supports penryn. If I'm not mistaken, the P35-DS3R already has bios supporting penryn.

I guess we just have to wait until a bios supporting penryn is released for the P35-DS3.....

Wow! That's a gem! You're running at the same speed as my E6750!!!

May I know how much additional vcore did you pump into it?

Wah, so high. For me, 1.425v already scared..... haha.... don't dare run at higher vcore 24/7...

Yeah, I'm a real chicken when it comes to this. Folding load at 55'c is comfortable for me. Anything above 60'c, already

Just don't want the hassle of RMA, that's all.....

Err..... for vdimm, you should be more worried of your rams rather the the mobo eh.....

If you're using crucial rams, not recommended to run 24/7 above 2.2v. 2.2v should be the max irregardless of ram cooling.

However, remember that these are based on other overclockers' experiences....

1.6V.... I'm not that daring. Especially when I don't have a backup CPU. Hmmm.... maybe one day I'll try going up to 1.5v....

A few forums did say that crucial ballistix rams doesn't like high vdimm as they can suddenly kaput just like that. Their recommendation is not to exceed 2.2v irregardless of cooling..... Of course, these are personal experiences and I don't know whether you can apply it to all crucial rams....

That's already good. It's either your mobo or your CPU FSB wall.

My rig can only reach 480mhz..... dunno whether it is due to the mobo or CPU....

Nope. It is a feature of this mobo. However, it only does that when you change a certain bios setting so don't worry about it....

What's your vcore? For a 45nm dual-core penryn, that's high.... What app did you use to check your core temperature. Make sure your heatsink is seated properly....

This post has been edited by kmarc: Jan 13 2008, 01:53 PM

I don't have a penryn but the temperature at stock speeds is definitely higher than and overclocked C2D!!! And that's not right, if you take into account that the 8400 is a 45nm proc and stock vcore is supposed to be 1.225v max....

So, all the apps are giving the same readings? Yeah, maybe you should try to reseat the heatsink again.....

BTW, what's your vcore?

This post has been edited by kmarc: Jan 13 2008, 02:27 PM

Wait a sec. What's the temperature at load which indicates 41'c?

Then, it shouldn't be that high. Why is your CPU fan rpm at 0? Is it connected/spinning?