Intel Core i5 & i7 Sandy Bridge Overclocking and Feedback

[DOM]

CP Try 8-9-8-24 T1

 

[Chicken Patty]

CP Try 8-9-8-24 T1

I believe I've tried that with no luck, not at under 1.55v. My new RAM comes in tomorrow, they are CL8 already so we'll see how that goes.

 

[DOM]

Are the ones you got are for p67?

Which ones u getting

 

[Chicken Patty]

Are the ones you got are for p67?

Which ones u getting

Yes they are. Here is the link:

G.SKILL Ripjaws X Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL8D-8GBXM

 

[Darkleoco]

Nope. My 49( no PLL OV) multi chip needs 1.32v for 4.5GHz

My 46 multi chip needs less voltage.

TOtally random situation..it's not about voltage it seems..it's mroe about overall power consumption, and votlage won't tell you that. Some lower-volt chips consume more current and still maintian the same overal lwattage thanks to the lower VID.


Max multi that boots into windows with PLL OV turned off tells you how good your chip is. Just diabled all but one core(2 cores by windows becuase of HT), set votlage to 1.525v, and do the multi test, one by one, to see where it doesn't make it into windows.

Booted into Windows @ 4.5 with no problem on 1.32v now its time for Prime95

Edit: I turned Hyperthreading off before OC'ing so I could jump right into BF3 but it just occured to me it might be better to have it enabled when Stress-Testing? Or should I keep it off if it will not be used often?

 

[cadaveca]

I leave HT on. Whole point of getting a 2600K over a 2500K is the HT.

 

[Chicken Patty]

IMHO, most softwares won't take advantage of HTT. I have noticed more "snappy" performance when disabling HTT. I guess this is something you need to play around with and decide for yourself. It really depends on what you do with your PC. But if it's stable with HTT then it's stable without it.

But cadaveca is right, that's the whole point of getting a 2600K.

 

[Darkleoco]

Going to re-enable HT this time, have to bump up my vcore a bit more for 4.5 Ghz >.> gonna be a long day lol XD

 

[Chicken Patty]

Keep us posted, it shouldn't need much more vcore though.

 

[t_ski]

you guys are making me want to OC my kids' 2600K so bad with all this talk of 4-4.5GHz on air...

 

[Darkleoco]

Testing 1.34v @ 4.5 with hyper threading re-enabled.

you guys are making me want to OC my kids' 2600K so bad with all this talk of 4-4.5GHz on air...

Why not go for it? I haven't broken 60C under full load on prime 95 even at 4.5 Ghz on air.

 

[t_ski]

I've had the thing for several months and only ran the thing at stock. I know the binner I bought it from said the chip should be good for a 51x multi...

 

[Darkleoco]

I've had the thing for several months and only ran the thing at stock. I know the binner I bought it from said the chip should be good for a 51x multi...

I don't think I could ever bring myself to hit even 5 Ghz alread at 1.34 vcore and temps are around 70 under Prime95 which is significantly higher than 1.32 so I very well could need watercooling if I want to go much farther.

Also what is a safe voltage I shouldn't exceed? Not going to run my computer 24/7 only when it is actually in use or I am at home doing something else temporarily.

 

[Chicken Patty]

you guys are making me want to OC my kids' 2600K so bad with all this talk of 4-4.5GHz on air...

You should

Testing 1.34v @ 4.5 with hyper threading re-enabled.




Why not go for it? I haven't broken 60C under full load on prime 95 even at 4.5 Ghz on air.

try linpack, prime doesn't seem to stress CPU's with HTT too well, at least not for me.

I've had the thing for several months and only ran the thing at stock. I know the binner I bought it from said the chip should be good for a 51x multi...

Put it to use.

I don't think I could ever bring myself to hit even 5 Ghz alread at 1.34 vcore and temps are around 70 under Prime95 which is significantly higher than 1.32 so I very well could need watercooling if I want to go much farther.

Also what is a safe voltage I shouldn't exceed? Not going to run my computer 24/7 only when it is actually in use or I am at home doing something else temporarily.

I think 1.45v, not too sure.

 

[cadaveca]

I suggest not going over 1.375v for 24/7 and high loading. That should be enough for most chips to get 4.5 GHz.

 

[Darkleoco]

try linpack, prime doesn't seem to stress CPU's with HTT too well, at least not for me.

I think 1.45v, not too sure.

How long should I be stressing since its not a 24/7 overclock I have been going for only an hour on prime.

Damn it just BSOD on 1.34v :shadedshu

 

[cadaveca]

Prime takes like 9 hours to complete a full loop on "Blend".


I use Linpack with 1024 MB for CPU MHz testing(at least 50 passes). Then use it with maximum memory(usually ~7 GB) for CPU_NB/VCCIO testing, running for 20 passes.

Usually Linpack is enough, but I'll run Prime95 for the full 9 hours too, and then do things like wPrime and such.

 

[Chicken Patty]

Prime for 9 hours should be enough. I used to use LinX though.

 

[Darkleoco]

Where exactly do I find the Linpack I should be running? I downloaded the Intel one and its saing its for Xeon processors?

 

[Chicken Patty]

Where exactly do I find the Linpack I should be running? I downloaded the Intel one and its saing its for Xeon processors?

This is the one I run.

http://www.xtremesystems.org/forums/showthread.php?201670-LinX-A-simple-Linpack-interface

 

[Darkleoco]

Might go grab that on my desktop and use it, which do you think causes systems to fail sooner if their OC is not stable?

 

[Chicken Patty]

I think both are the same pretty much. I've only used the one I linked. Maybe Cadaveca can chip in with some info. For sure it works better than prime95.

 

[DOM]

i dont even test my oc if it doesnt crash its stable

 

[Darkleoco]

i dont even test my oc if it doesnt crash its stable

I would hate to be doing something important though only to have it crash due to instability that could have been checked for

 

[Chicken Patty]

For DOM if it breaks a world record, it's stable.