I7 2600k 4.9 GHz fine, 5.0 GHz just won't boot?

Toggle sidebar Toggle sidebar
R

Raaz0r

Commendable
Aug 2, 2016
3
0
1,510
Hey all,
after reading a lot of Guides and other Threads I OCed my i7 2600k to stable 4.4 GHz @1.35V, HT etc. all on (PLL OV and Spread Spectrum disabled). Very nice performance and sweetspot for me. With fans on 100% it stays at about 60°C while Intel Burn Test

Setup:
AsRock P67 Pro 3
I7 2600k
Thermalright Le Grand Macho RT (ca. equal to Noctua D15 and Alpenföhn Olymp)
Be Quiet Straight Power 500W
Case: Cooler Master Silencio 550 (silent, but hot)
CaseFans: 3x Silentwings 2 (2x front, 1x rear. All: front->back)


Now that I didn't found anyone who said "my i7 died due to OC", I wanted to try 5.0 GHz:
Disabled everything, fixed the Voltage instead of Offset and raised the Voltages to:

Vcore: 1.45
Ram: 1.50
PCH: 1.012
PLL: 1.791
VTT: 1.077
VCCSA: 0.925

The other Settings are listed below.

My Problem: 4.9 GHz are booting and stay stable while Playing (Rocket League seems to be my "killer test". Even if Prime and Intel Burn stayed stable, Rocket League just freezed my System...
5.0 GHz on the other just won't boot. Bios screen runs fine, than nothing but a little grey bar, blinking and the top left of my Screen. I even tried to up all Voltages about "one click" and the VCore to insane 1.5 Volt. Nope, no Windows...

Any ideas why that? Maybe there is some "magic" which would break that wall?
4.9 GHz are running so damn fine and cool, I don't see any reason why it just denies to boot :(

If I forgot anything just mention it, will try to answer that as fast as I can :)

Thank you in advance,
Rasmus

Other Settings just for Info:
PLL Overvoltage: disabled
SpeedStep: disabled
Turbo: Manual (can't disable it)
Power Limits:
Short: 150W
Long: 150W
Duration: 1s
Additional Turbo Voltage: 0.004 V (the lowest)
Core Current Limit: 150
BCLK: 100
Spread Spectrum: disabled
Hyper Threading: disabled
Hardware Prefetcher: enabled
Adjacent Cache Line Prefetch: enabled

C1E, C3, C6, Packe C State: disabled
CPU Thermal Throttling: enabled
Intel Virtualization Technology: enabled
No-Execute Momory Protection: disabled
 
Solution
basroil


4.4 is usually a sane target for 24/7 use. If you can keep the voltage under 1.35, even better since it will actually be more efficient than at default speeds ;)
Sort by date Sort by votes
basroil

basroil

Glorious
Oct 19, 2013
8,698
1
46,960
Clearly you haven't learned as much about overclocking as you thought. Not every chip is capable of 5GHz, and it seems yours definitely can't. Not on air at least, maybe water cooling will give you a bit higher clocks, but you'll be spending a hell of a lot of money for next to nothing in return (other than bragging rights)
 
Upvote 0 Downvote
R

Raaz0r

Commendable
Aug 2, 2016
3
0
1,510


First: Thanks for your answer :)
You sound a little bit "offending". I really didn't want to sound bigheaded in any way and it's not about bragging, but for single core performance for games like Gothic 3 which FPS are dropping in Cities.

You are right, I don't know very much about overclocking, that is why I tried to ask people like you in a kind way :)
To the Watercooling: I don't see why this should make it bootable. More stable under Load: yes, that's clear, but does the CPU gets hot before even booting? My Fans are at 100% at the moment I power on (for the case that it gets hot before booting).

Anyway: I didn't find much about "my CPU is just not capable of 5 GHz", so maybe a few others could confirm this. I just thought that maybe I just don't know about any special setting, that you need for high Clocks.
 
Upvote 0 Downvote
basroil

basroil

Glorious
Oct 19, 2013
8,698
1
46,960


That's not what I meant by bragging rights, that's just basically just meant that all you get out of it is a 2% and the chance to say you hit 5GHz ;)




Water cooling itself won't necessarily help with booting, but it may let you drop your voltage a bit (since you won't need the voltage to stay stable), which might let you then boot. Again, very iffy, and you could end up shelling $100 for no gain. 1.45V is unacceptably high for Sandy Bridge, borderline "instant fry" level and it will definitely shorten your CPU's life by several years.
 
Upvote 0 Downvote
scuzzycard

scuzzycard

Honorable
Feb 26, 2016
1,583
0
12,960
I hate to crush your dreams, but stick a fork in it! It's done! It's not even 100% stable at 4.9 and you're trying for 5.0? What's going to happen is that eventually it will degrade so badly that you will be lucky if it can even run at stock speeds. You need to get that voltage back down to ~1.3 and call it quits before you ruin it.
 
Upvote 0 Downvote
basroil

basroil

Glorious
Oct 19, 2013
8,698
1
46,960


Are you sure you really want to say that? 1.45V is already pushing it, I wouldn't be surprised if >1.5V fried his chip instantly (i.e. without enough time to heat up the chip at all)
 
Upvote 0 Downvote
bicycle_repair_man

bicycle_repair_man

Splendid
Jan 10, 2014
5,752
2
28,960


Absolutely, increasing the voltage is the only way record-breaking overclockers are able to achieve the speeds they can. Like I said, it's easier said than done, because the practicalities of keeping everything cool are beyond most people.
 
Upvote -1 Downvote
basroil

basroil

Glorious
Oct 19, 2013
8,698
1
46,960


Record breaking overclockers don't care if their chip dies after the record is set. Voltage is a "force", and like any force, there's a huge difference between how long something will last under a small force vs a large one. Temporary overclocks are focused mostly on the heat production rather than voltage, but it's pretty clear raazor want this to be a long term overclock, which means he has to consider the effects of higher voltages, especially with gaming (rapid loading and unloading)


Going back to raazor's first post, there is not magic setting for 5GHz, not all chips can hit that high without potentially hazardous voltages, and fewer still can hit that on air even with very high voltages.
 
Upvote 0 Downvote
bicycle_repair_man

bicycle_repair_man

Splendid
Jan 10, 2014
5,752
2
28,960
Like I said, easier said than done. I understand that in the real world, people aren't going to be using ridiculously-high voltages.

From a theoretical point of view, the voltage can be as high as you like if the temperatures are kept in check, but again, like I said, the practicalities of this are beyond most people.
 
Upvote 0 Downvote
R

Raaz0r

Commendable
Aug 2, 2016
3
0
1,510
Thank you very very much for that many answers so fast.
I will happily stay at my 4.4 GHz after all.
I considered to upgrade my motherboard and CPU so I thought why not try it. I know that the chances are there to fry it but I was willing the risk. Not for 24/7 but for a few hours in a few games (thanks to uefi profiles).

But it seems that my good old sandy just doesn't want to reach the 5 GHz. I had 5fps boost with 4.9 GHz. So yeah, no great achievement haha.
What really impressed me was my cooling. 4.9 GHz @1.45V and Intel burn stayed at 75 C :)

It was a nice adventure trip, thanks again for the replys!
 
Upvote 1 Downvote
basroil

basroil

Glorious
Oct 19, 2013
8,698
1
46,960


4.4 is usually a sane target for 24/7 use. If you can keep the voltage under 1.35, even better since it will actually be more efficient than at default speeds ;)
 
Upvote 0 Downvote
Solution
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom