Intel Core i5 & i7 Sandy Bridge Overclocking and Feedback

[BababooeyHTJ]

I'm not really referring to you. 1.42ish without loadline probably isn't bad at all. I was just surprised by what I saw on the forums while researching Sandybridge.

 

[Frizz]

well, that's for mem, so if ya don't need it, don't give more! 1600MHZ mem and up only need more.

Tirbo OC's are literally that easy. Sad, but AWESOME!!!111!!!

Turbo OC is awesome you have exposed a gold mine here cadaveca, not sure how this method will do for higher clocks but 4.5ghz is cruising. One thing to note though is that whenever I change the turbo related settings it seems I need to do a complete power cycle restart before the vcore etc changes to the correct amount.

 

[cadaveca]

I think what you are experiencing, vcore-wise, is just how your board works. Each one has it's little quirks.

For daily usage, Turbo, to me, seems the way to go. when websurfing, or whatever, you get low power usage, but when you need more power, for a gmae, or whatever, it's right there, without any fuss.

I can understand that guys that do idstributed computing want thier 24/7 clocks high, and most boards offer that option now, but personally, I like the best of both worlds..power savings + power computing.

 

[wolf]

time for me to join the crowd and follow the sheep so to speak, 2500K

90% finished in a Mini ITX build I've been planning for over a year now, parts include but are not limited to;

Gigabyte H67N-USB3
2x2gb G-Skill Ripjaws 1333mhz 9-9-9-24
i5 2500K stock cooler
Gigabyte GTX570 oc windforce 3x

obviously the H67 cannot overclock but at this stage a 'stock' (turbo enabled, aka permanent 3.4ghz) 2500K provides a hec of a lot of power. so in terms of overclocking I cant really contribute, but given the chipset limitations im doing the next best thing. undervolting.

so far, especially since I'm using the stock cooler, I've managed quite an agressive undervolt, and plan to go further.

1.075v set in bios, CPU-Z reports 1.092v at idle and 1.055-1.060v under prime 95 load. this results in temps right on the 60 degree mark across all 4 cores, give or take a couple of degrees. this is 100% prime stabe for the time being.

has anyone else undervolted a 2500/2600K at stock speed, if so what should I be aiming for, I feel I've already come a long way!

 

[KieX]

I've tried cadaveca's suggestion of using turbo to OC instead of volts OC'ing like I had until now. And It really is some good advice, thanks for that.

I am doing distributed computing so a balance of heat/performance is what ultimately decides the clocks for all my 2600K rigs. With Turbo OC I'm getting something like 6C drop in temperature for the exact same clocks.

Soon as I get home changing all the sandybridge OC's to Turbo mode. Good call man, you've just made my summer a little bit more bareable.

 

[cadaveca]

What I like most about turbo, is that if the CPU does get too hot, or passes a power consumption threshold(that you can adjust), it will throttle, and provides a bit of protection for your CPU that may not be present if you are forcing a 24/7 multi-lock.

I've tested how it affects performance too, and whiel there is a very small hit due to the clocks shifting around, it's barely noticible.

Intel really has done a good job making overclocking very simple, and easy to setup, and htat's a big reason why I'm focused right now on the entry-level boards, rather than the high-end. I'd much rather spend time with the boards that sell the most, and be able to help out there, than on the extreme edge, where alot of people just cannot afford to play.

It takes the same amount of work, really, whether I'm looking at @ $500 board, or a $100 board, so I'm kinda ripping myself off there, but I don't care. I'm doing this becuase I love doing it, not for money.

 

[Frizz]

has anyone else undervolted a 2500/2600K at stock speed, if so what should I be aiming for, I feel I've already come a long way!

Nope, but I have OC'd to 4ghz which only required 1.190vcore. So for 2500k and stock settings I would guess below or around 1.100vcore

 

[wolf]

Nope, but I have OC'd to 4ghz which only required 1.190vcore. So for 2500k and stock settings I would guess below or around 1.100vcore

cheers man, that must be a cool running 4ghz!

 

[BababooeyHTJ]

Has anybody else find that Intelburn doesn't prove Stability with Sandybridge? i had my 2500k stable with IBt, but would fail Prime and BSOD

I've found Prime blend test best for me

Thanks for the post. I passed 20runs of Linx with AVX which is a pretty obscene load. I figured that I would be fine but I remember reading this post and I figured that I would run prime blend overnight. Well, when I woke up my computer wasn't on. Looks like you are right.

A gave the vcore a bump and have been running a blend test for about an hour now. We'll see what happens.

Thanks again for the tip.

 

[phaseshift]

anyone wanting to sell a 57x chip ? paypal is ready

 

[Frizz]

lol gah, when I set my ram to its rated specs eg. 1600mhz and 8-8-8-24, up the VTT to 1.20/40 and ram voltage to 1.5 I can't seem to keep my system on for 12 hours, it just freezes no bsod but i get the system log bsodx124 so I assume its related to ram because currently I have it set to 1333mhz and lower timings and system uptime is 27 hours so far

 

[heky]

Why are you using such a high voltage for VTT? I am using 1.09v and have ram clocked at 1866 8-9-8-24-1T with no problems whatsoever.

 

[Frizz]

Why are you using such a high voltage for VTT? I am using 1.09v and have ram clocked at 1866 8-9-8-24-1T with no problems whatsoever.

I don't really know, but even then my system doesn't stay on for long.

 

[heky]

Does your proc lower the voltage while idle? I have seen people have problems becouse of not enough voltage under idle. If that doesnt help try up-ing the ram volts instead of vtt.

 

[Frizz]

Does your proc lower the voltage while idle? I have seen people have problems becouse of not enough voltage undel idle. If that doesnt help try up-ing the ram volts instead of vtt.

yeah it does have lower voltages while idle, I will try those settings with the rated ram speeds.

 

[heky]

Try using a fixed voltage. I am almost 100% certain your problems will disappear.

 

[sneekypeet]

Sorry to bump this thread so late, but after reading 20 pages of info I don't think this is typical. I haven't run this overnight yet, but it has passed hours of testing at this speed, but for this image I only ran it for like 20 minutes. Input, tips, advice to tweak this setup?

 

[TheMailMan78]

Sorry to bump this thread so late, but after reading 20 pages of info I don't think this is typical. I haven't run this overnight yet, but it has passed hours of testing at this speed, but for this image I only ran it for like 20 minutes. Input, tips, advice to tweak this setup?

http://img.techpowerup.org/110625/4700_20mins.jpg

Do you think I could get those clocks on my 1090T?

 

[sneekypeet]

you got a supplier for LN2?

 

[TheMailMan78]

you got a supplier for LN2?

I have a small box fan. Will that work?

 

[sneekypeet]

was that small box, fan..or was that small, box fan? Oh, and no, you need much more to get that chip to 4.7

 

[Frizz]

Sorry to bump this thread so late, but after reading 20 pages of info I don't think this is typical. I haven't run this overnight yet, but it has passed hours of testing at this speed, but for this image I only ran it for like 20 minutes. Input, tips, advice to tweak this setup?

http://img.techpowerup.org/110625/4700_20mins.jpg

WOW are those load voltages!? If yes that is possibly the best chip I've seen online yet.

 

[sneekypeet]

they are loaded voltages, yes, Prime95 is still running at this point.
Actually I think the voltage may be slightly off

 

[LagunaX]

Sorry to bump this thread so late, but after reading 20 pages of info I don't think this is typical. I haven't run this overnight yet, but it has passed hours of testing at this speed, but for this image I only ran it for like 20 minutes. Input, tips, advice to tweak this setup?

http://img.techpowerup.org/110625/4700_20mins.jpg

Yes SneekyPeet,

read my thread here: http://www.xtremesystems.org/forums/showthread.php?266839-79.99-G.Skill-F3-12800CL6D-4GBXH-%282x2GB%29-1.5v-DDR3-2133-CL7!

cuz it looks like you have the sam ram!

 

[sneekypeet]

Yes SneekyPeet,

read my thread here: http://www.xtremesystems.org/forums/showthread.php?266839-79.99-G.Skill-F3-12800CL6D-4GBXH-%282x2GB%29-1.5v-DDR3-2133-CL7!

cuz it looks like you have the sam ram!

Already had my ram to 2219mhz with 9-11-9 timings...it was meh really
Also I have Mushkins, older stock PSC, not stuff made for 1155.