2700k WOW!

Damien c

Active member
Well yesterday I thought I would treat myself to a small upgrade, so went from a 2500K @ 4.8ghz to a 2700K.

Installed it last night and setup the watercooling loop tested it all and everything was fine
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Woke up this morning to start playing with the overclock and got it straight up to 4.8ghz with no problem so decided to push on.

Currently stressing it at 5.2ghz and it seem's to be fine.

Temp's currently have maxed at 65c, 77c, 78c, 72c using 1.550v but according to Aida it's actually using 1.536v.

Would you lot say that is a fine voltage to use 24/7 or should I knock it down as I know it will do 5.0ghz at 1.45v so I am thinking the extra voltage is not worth it for the small 200mhz increase.

Also while on the subject I cannot get CPUZ to work, as it just get's stuck on the Monitoring part after clicking the icon so, I cannot use the CPUZ validation thing which is annoying any ideas on what could be causing it as the Aida CPUID work's.

Older versions of CPUZ below 1.53 work's but doesn't tell me the voltages etc and anything above 1.53 doesn't load.
 
Trust me on this,1.55v is for benching.Next two week it will be down to 5ghz.Suddenly it wont boot 5.2 then 5.1 and so on.
 
Well I have dropped it down to 5.0ghz using 1.475v and after 2.5 hours of Prime95 the highest core temp was 71c so pretty happy with that.
 
I'd advise caution here.

I've been reading more and more of people who've had good, stable overclocks using more than v1.4 vCore (under load) who've been finding that their OC's aren't quite as stable as they once were. A friend of mine is included in that list so I have first hand experience. This is on Sandy B. chips of course.

The often common denominator is water cooling. A good water cooling loop (like my friend has) really does keep temperatures in check, so there's no "too hot" warning. Rather the risk appears to be electromigration from running too high vCore for a little too long.

The thing is, these chips (Sandy B. is my most recent experience) can really clock high, but the vCore curve gets exponential while the Mhz remain linear as you go up. With some of the excellent WC loops people build temperatures remain great however, and Sandy B. is a fairly cool chip to start with. For example, my friend never saw the hot side of 50c on his loop, yet the CPU was still being pushed too hard. Hence it needs either more vCore to hit the same speed it was hitting fine previously, or the clock pulled back a bit, to get it stable. All the while temps are just fine.

For the odd benching run, and just for the fun of seeing how high you can go, you'll most likely be ok. But do take care not to simply leave it there as it's been working fine for a couple of days.

I admit, I pushed my 2500k a little far soon after getting it. It turned out to be a runner up in the silicon lottery so needed excessive vCore (i.e well over 1.4v under load) to hold a 5.0ghz clock. Also, as I was on a basic closed loop WC kit (Antec Kuhler 620) my temps were the first warning - for me personally I'm uncomfortable if the CPU hits 70c.

So, take care of your new 2700k and it should last you, abuse it and it []imay[/i] cause you problems in the future. *

Cheers,

Scoob.

* Standing joke between me and my friend; whenever there's new and better kit out the idea of pushing the clocks a little too high and breaking something, being "forced" to upgrade, isn't entirely unappealing lol. Never do it of course, I'd not deliberately break something, but funny to joke about none the less.
 
its just not heat that kills chips but to much voltage for extended time can also have un-nerving effects. Another member here clocked his 2500k to a sweet spot then left it folding for a few days then blammo she wouldnt hold anything decent for oc's since. Best advise is stay under 1.4vcore for 24/7 use and dont bench for to long at over 1.4vcore. Remember just because its not getting hot dont mean ur not hurting it.
 
Wait you are using water cooling on the 2700k and can only get 5.0 with 1.475? Need to play around a bit, i have my 2600k at 5.0 with 1.41V on my loop. With 29c idle and 48C max load. Maybe you can push a little less volts? Just curious as that sounds very high, all though I dont think you added what board you are using to OC with.
 
Wait you are using water cooling on the 2700k and can only get 5.0 with 1.475? Need to play around a bit, i have my 2600k at 5.0 with 1.41V on my loop. With 29c idle and 48C max load. Maybe you can push a little less volts? Just curious as that sounds very high, all though I dont think you added what board you are using to OC with.

HT on or off bro??
 
Well I am running this system at the moment.

Intel Core I7 2700K

12gb Corsair Venegence 1600mhz 1x 8gb kit, and then 2 sticks from a 6gb kit

MSI P67A-GD53 Motherboard

MSI GTX 480

Coolermaster 1KW PSU

HDD's

1x Samsung 1TB

1x Samsung 2TB

1x Samsung 160gb

1x Corsair Force 3 SSD

Cooling is done by

EK-D5 Pump Top

Alpha Cool VP655 Pump

3/8 pipe

XSPC RX360 Rad

3x Sctyhe Kazi Jyuni 1900rpm fans pushing

3x Corsair fan's pulling

The Corsair fan's will be replaced either tonight or at the weekend dependant on if I can be bothered to strip them out of my dad's pc or not, or I might just buy another 3 of them.

I did try taking the 2 stick's out from the 6gb kit, and leaving it with 8gb but it made no difference to the voltage that was needed and didn't limit the overclock, I know it will do 5.2ghz but until I have sorted it all out I am not going to entertain doing that speed.

The temp's are maxing out at 71c on the hottest core.

I have had it running at 5ghz using 1.45v but I didn't leave it stressing long enough, and then for some reason I bumped it up to 1.475v.

I will look tonight at seeing if I can get it to 5.0ghz with lower volt's but I cannot remember at the moment if I tried, it at a lower voltage or not as I think I just tried the 1.45v and ran prime for about 30 minutes.

I will post back tonight when I have had a look at stuff.

I know at stock, the temp's were 15c idle and maxed out at around 40c on the hottest core, but there is a 10c difference between the hottest and coolest core so may need to take the block of and put, it back on again as I didn't do it but my dad did.

What thermal paste would people recommend as I think I have some Artic Silver 5, and I know I have some Artic MX3 and I am currently using the Artic MX4 that came with the block.

Oh just to add I still have the Hyper Threading enabled as I changed from a 2500K to a 2700K because I needed the extra threads, for video editing as it's knocked around 5 minutes of the converting time.
 
Dude listen to the boys....

1155's will degrade with too much voltage... Keep it too high and in a couple months that CPU might not even do 4.6
 
Dude listen to the boys....

1155's will degrade with too much voltage... Keep it too high and in a couple months that CPU might not even do 4.6

Ignoring the thread for this part completley can I just say you are a "Legend" only found this site because I was looking for reviews of some hardware a while ago and came, across one of your video's and it was so unbiased and based on nothing but the truth that it made me check out more of them and the site.

On topic though, as I say I will be looking at the voltages tonight and if I can get it at 5.0ghz with 1.4 volt's or less then I will be happy, but I may just drop it down to 4.8ghz and see what the lowest voltage is that I can use for that.

When I 1st started bumping up the speed I noticed it will post at a 55x multi but won't load window's so probably would need some insane voltage for that which I just won't put through it as my cooling situation is just not good enough to keep it cool.

I think it might be a good idea to get the warranty thing for my chip from Scan.co.uk, as it's only £20 so probably might save me some money judging by the post's on here.

Just like to say thank's people and I will take on board everything you say and look at lowering the voltages.
 
What does everyone make of this seen a few post's on different forum's and the like of Overclockers.co.uk saying that various different max voltages apparently told to them from Intel.

Max 1.425v

http://www.overclockers.co.uk/showproduct.php?prodid=CP-390-IN&groupid=701&catid=6&subcat=1859

Max 1.45v

http://forums.guru3d.com/showthread.php?p=4150721

Max 1.52v

http://forums.guru3d.com/showthread.php?t=352614

I hope I don't offend anyone but I am confused because I cannot seem to find anything from Intel (officially) regarding the maximum safe voltage and with different thing's being said on different forum's it's, hard to actually find which place is actually accurate.

I saw the one from Overclockers when I was looking at the prices but only found the ones from Guru3d just now when I started looking for something, official from Intel regarding voltages.

Obviously I would prefer to use as low a voltage as possible for the overclock, but I don't actually want to damage the chip as my dad will be getting it when I next upgrade.

Again I don't mean to offend anyone but as I say I am getting confused (not hard to do) as to what is "safe"
 
LOL almost the whole OC3D forum says it, yet .....ook NVM........
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As I say I am just trying to find out what you think of those post's on the other forum's as I seriously am getting confused about it.

I mean everyone on here say's 1.4 max, and even my motherboard say's 1.4v max so I will just stick to 1.4v

Now my thing to do will be to see what speed it will do at that voltage as a maximum.

Thank's all.
 
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