I'm not that new to computers but I've never oc'd before. ( i know i suck) Can someone tell me how to overclock a i7 2600 (no k) on a ASUS Maximus IV Extreme-Z LGA 1155 Intel Z68 to 4.0 ghz? I want to do this in the next month or so but i need simple but specific instructions. Thanks to anyone willing to help!
Just saw the above post - DO NOT raise bclock on SB above about 105 to at the Most 108. This is also the freq for pci-e which becomes UNSTABLE very easily when messing with the 100 MHz. END ADDED.
To Overclock a sandybridge CPU you must be able to up the cpu multiplier.
Older Intel CPUs you could adjust the bclock and adjust the multiplier. On the 1155 platform the bclock is set to 100 MHz and only MINOR adjustments should be made.. You can up the bclock about 3 MHz, but above that you start runing into stablity problems (as that is also for the pci-e). This is simply not worth it as 3% to 5 % just is not noticable.
I've heard that you can change the multiplier for the single core (single threaded application) for non k Cpus. So see if it will let you change core 0 to x40. For suck a small OC should not have to adjust vcore, maybe a small amount.
The nonK processors (mine is a 2600 also) can be OC'd to a multiplier of 4 over the rated 'turbo' for your CPU. In other words you have a stock speed of x34, a turbo of x4, and then additional headroom of another x4.
This brings your max multiplier to x42 (34+4+4), which at the default BLCK of 100 will get you to 4.2GHz (or at least really really close to that. Mine would get to 4.18).
This is a turbo boost OC, so your idle clock will still be 1.6GHz, Windows will still say that it is at 3.4GHz, and your clock at load will vary (wildly in some cases). I am running prime95 right now with a 101 BLCK and 42 multiplier, and most of the time the multiplier is hovering around x39-41, with the occasional x42 in there.
With my Hyper212 Evo I am seeing temps in the high 30s to low 40s so far (just started the test 30min ago, and all is well so far.
Oh, and this little OC brought that pesky WEI from 6.9 (limited by stock CPU settings) to a glorious 7.7 (now bottle necked by my 1333 Ram). I'm not a huge OCer (thus why I did not get a 'K' processor), but a bump up from a stock 3.4GHz to my current max of 4.24GHz is making me pretty happy with my 'Non Overclockable' CPU. Especially when there are some 'K' processors out there that cannot get this high.
I use to mess with the BLCK, but found that I could OC my GPU (much more important) more if I left the BLCK at 100
My average single core was at 4.2 when under load, running heavily threaded loads I was up at 3.9-4.0, but now that I have a (much) better case I am seeing a much more consistent 4.1-4.2GHz when under full load.
Hi people, good day to all.
I'll bump this thread because i have almost the same -problem- here.
I've decided go further with my rig and OC my CPU after had a sucessfully GPU OC (GTX580 SC even more OC to 860/2070/1088v)
First my rig specifications:
-Mobo: MSI P67a G43 (BIOS up to date, i'm sure of that, i did it today)
-Corsair Vengance 4GB*2 1333 or 1600, not sure. Anyway.
-Intel 2600 (Non K)
-Thermal take Frio (Which actually does a great work, because my ambient temps are between 35 and 38 celcius degrees, and it keep my CPU at 38 on IDLE -when no OC'ed and 63 MAX when fully loaded playing games)
Thats all the relevant.
Let me show you the options that i'm able to see in the BIOS:
1-General Bios Options under Overclocling Menu:
2-CPU Features topic:
3-CPUZ summary: (By the time i took that screenshot, it had a overclock by multiplier to 42, following also the steps provided by HugoStiglitz in the second reply of this post)
As you can see, no mather what i do, i always get 3.891as core speed. Intel Turbo boost gadget show me 3.9 when load, but still not getting 4.2 as it supposed to be.
I saw some people post and videos, someo of them managed to get this processor to 4.5Ghz, i dont wanna that now, just get 4.2 (as appears in the BIOS UEFI after set the core ratio to 42).
I see some of them options and they are able to modify the BLCK and raise it up to 100. One of those videos i saw show how raising it value a bit more the 2600(non K) get 4.5Ghz or so.
Can any one give me a hand with this? Check CPUZ, never go upper x39.
I have exactly the same problem like cm17x with my 2600(non k),i know it's not meant for big overclocks but people are getting 4.2 easily.
After changing the multiplier to 42 my cpu speed in the bios is 4.2Ghz but it's not showing in windows. In CPU-Z the multiplier is never stable and switch between 39,40,41 and 42.the weird thing is when prime95 is running it stays at 39..
Intel Core i7 2600 / Cooler Master Hyper 212+
8Gb DDR3 Gskill RipjawX 1600
ASUS HD7850 Direct CU ii 2Gb
Antec HCG 520W