Is this stable?

spb251272 · 5 Mar 2007 at 07:33

After getting my e6600 up and running for a day, I decided to try overclocking. I managed to take it up to 3.4, but SuperPi would sometimes hang. I ended up backing it down slightly to a 1500fsb which gives 3.375Ghz. Ram is unlinked at 800mhz, 2.1v and 4-4-4-15. Vcore is set at 1.475v (about 1.425 actual), fsb and nb are both at 1.5v.

I decided to try running orthos overnight at these settings, and it's now been going error free for 7hrs and 52mins, with TAT reporting temps between 40 and 44c.

Do you think the fact that SuperPi was sometimes hanging means that it's unstable, even though orthos has ran error free for so long?

Stelly · 5 Mar 2007 at 08:35

has it froze since you backed it down using SuperPi??

Stelly

spb251272 · 5 Mar 2007 at 08:52

Yes, it has, but sometimes it runs fine. When it hangs, I can see the cores are still being accessed, then it says "not responding" at the top of the superpi window, and I can close it. The fact that I'm running it in Vista wouldn't make a difference would it? Also, should I run it with affinity set to a single core?

If you do think it's unstable, do you think it's safe to up the vcore, and if so, what would you recommend? I was hoping to get to 3.6 on this cpu so I'm hoping I haven't hit a wall yet :eek:

Jleo · 5 Mar 2007 at 09:33

Your temps can create instablity, worth checking if you havn't already.

What are your temps? with tat or core temp? what cpu cooling are you using?

spb251272 · 5 Mar 2007 at 09:37

Temps while running Orthos are 45c with a Tuniq Tower.

spb251272 · 5 Mar 2007 at 18:31

It has now been running orthos for over 18 hours, so should I assume that it's stable and try for a bit more??

simonnance · 5 Mar 2007 at 19:03

18hrs is a lot more than most people go for, so that sounds pretty solid!

Are you measuring temps with TAT or CoreTemp? Other monitoring software can be considerably off, but if you are then you have a good temperature overhead to work with too, most people seem to think that 60C max at Orthos load is about the safe limit for using C2Ds on a 24/7 basis (of course, your comp will rarely GET that loaded).

spb251272 · 5 Mar 2007 at 21:43

I'm using TAT to measure temps. I've now got it running at 3.6Ghz at 1.55V (about 1.475 actual). It's 1hr 40mins into an orthos run, and temps are maxing out at 55c. I'm gonna leave it on overnight to see if it's ok, then I think I'll leave the core at this speed, and see how much I can overclock the RAM

I managed a 14.9 sec 1M Superpi at 3.6 - is this ok?

Jleo · 5 Mar 2007 at 22:03

Good temps for air at 3.6Ghz, excellent super pi score

simonnance · 6 Mar 2007 at 02:00

must be pretty good circulation in that case, got many 120mms running? Quite some Vdroop though, 0.05-0.075V, is that the board, or are you hitting the top end of your PSU's power range?

spb251272 · 6 Mar 2007 at 07:11

It's done 11 hours orthos, so I'm assuming this is a stable setup

I do have good circulation, my MountainMods case has 4 120mm intakes and 5 120mm exhausts. I don't think the voltage drop is vdroop, because it's just the difference with what I set it in the bios and what it reports (even at idle) in vista. I'm sure I've read something about the nvidia 680i boards undervolting.

Anyway, I'm very happy with 3.6 at these temps, so I'm not going to push it any further because it would need more volts and then it would be getting too hot for my liking :eek:

Now it's time to try oveclocking my OCZ pc6400 plat rev2. I've got it unlinked at 800 4-4-4-15, so I'm going to try for 1000-1100 and see what it does.

dis · 9 Mar 2007 at 13:45

spb251272 said:
I managed a 14.9 sec 1M Superpi at 3.6 - is this ok?

Seems a bit high to me, sure i've hit a flat 14 without going to 3.6 (can't *quite* get it stable there yet). could be FSB difference, i'll check when i get home tonight