Bought an OCUK '4.8Ghz' chip, can barely get to 4.6Ghz.

[bulldog147]

Latest updated at 7.26pm: Got BSD again and cold issues again! Not very happy now I cannot believed it. Why the shop metion me of 28 hours stable which I find it hard to trust it ! really fed up.

I had try 40x100 and leave everything alone at default auto (BSD after 3 mins) This isn't right at all. Many forums say that all sandybridge was easy to get up to 4.4 with everything leave at auto at the bios setting. Look like I had a crap chip indeed.

Next Monday I am going to order this board: http://www.overclockers.co.uk/showproduct.php?prodid=MB-051-AK&tool=3 and a new CPU here: http://www.overclockers.co.uk/showproduct.php?prodid=CP-358-IN&groupid=701&catid=6&subcat=1859 and get a new ram too: http://www.overclockers.co.uk/showproduct.php?prodid=MY-094-KS&groupid=701&catid=8&subcat=1517 and hopefully it will auto overclock stable at 4.8GHz. Finger crossed. If it work well next week, going to sell my z68x ud4 b3 and i7 2600K unstable chip too.

 

[Justintime]

lol man you have bad luck. Try 45x100 @ 1.36v and maybe 1.59-1.6v RAM, maybe lower your PLL a bit to say 1.75v and use whatever the medium LLC is called.

 

[DavyBoy]

RE: Batch numbers, this is something I've never agreed with tbh, with my D0 920s I went through various chips in order to find a decent one (5 in total), my last two had identical batch numbers, and when I bought them they were both installed into two EX58 UD5 mobos, and they both required completely different BIOS settings in order to make my rigs stable.

All these folk who go crazy trying to find a chip from a specific batch number seems completely pointless in my opinion, just because one guy gets a cracking chip that can do crazy speeds with low vCore, doesnot mean that the next person with identical batch number will acheive the same results.

I've been trying to decide whether I should replace my RIIE and 920 for a 2600k and a decent P67/Z68 motherboard, but tbh I don't really think it would be worth my while, I'm just going to wait it out until the LGA2011 socket comes out and see how well it's going to perform first before I decide to upgrade.

 

[DavyBoy]

@Bulldog, you are mad mate!

You're going to go out and buy a new chip, mobo and RAM just so you can get 4.8GHz using auto OC????

Why don't you just try your current chip on a different board, maybe one with a UEFI BIOS instead of the old style BIOS?

If the shop are managing to get your rig stable, then it's clearly something else that you are doing that's causing your system to cripple constantly.

 

[DarkBahamut]

What's the obsession with using an auto OC anyway?

I wouldn't expect most setups to get to 4.8GHz with completely auto settings.

IMHO, 'Auto' OC buttons are probably the worst development motherboards have ever seen. Spending time to learn exactly what all these settings do and tweaking them by hand makes it a million time easier to diagnose a BSOD/Crash when you start to hit limits.

 

[ChrisGTL]

@Bulldog

Try 44x @ 1.375v
X.M.P Profile Disable
RAM 1600Mhz (set manualy timings to 9-9-9-24/2T)
PLL Overvoltage Disable
Multi-Steps Load Line Level 4
DRAM Voltage 1.50v
BCLK Clock Control Enabled
BCLK Clock Frequency 100.0Mhz

Boot into windows and report CPU-Z vcore at idle and Prime95 torture.

Cheers

 

[bulldog147]

My overclocked appear stable now, after setting the bios change from PCI-E x16 to PCI standard as I thought my Geforce GTX 260 is PCI-E x16 support and should be no issue ?

Right guy, I had tested overnight:

4.20GHz (100.30 x 42.0) (all on auto as default) vcore are within range of between 1.260v and 1.272v under load and 0.972v under idle had passed after 8 hours prime95 blend test with max temp of 56-61-63-59 with a room temp of 24C. CPU VID is 1.3611 (under load) and 1.2810 (under idle) I leave the same setting for 4.00GHz as well, it should be stable the same as 4.20GHz but only change (100.30 x 40.0)

Now testing 4.40GHz (100.30 x 44.0) (all on auto as default except change in bios vcore set at 1.310v LLC Level 5 and still running 7 hours prime95 blend test with no BSD so far, temp now reading out as 59-63-66-60 and vcore are in range between 1.296v & 1.308v under load and 1.332v (under idle) and room temp is 23C.

See here:

 

[Justintime]

What's the obsession with using an auto OC anyway?

I wouldn't expect most setups to get to 4.8GHz with completely auto settings.

IMHO, 'Auto' OC buttons are probably the worst development motherboards have ever seen. Spending time to learn exactly what all these settings do and tweaking them by hand makes it a million time easier to diagnose a BSOD/Crash when you start to hit limits.

Had a fiddle with the Auto 4.5GHz on another P67 PRO3 running BIOS 2.00 with a 2600k rig i'm doing for a mates bro, vcore went to 1.412v!! under load, temps with the TRUE and Scythe S-Flex 1600rpm fan were hitting 78C under prime only and 83C with Linx, terrible and its not even a hot day. Chip seems just fine at 1.36v 4.6Ghz so far for 14hrs prime blend so far and hottest core is 72C Prime and 76C Linx haha. Not over fussed and 4.7Ghz freezes at 1.36v and bsds prime in less than 15 mins at 1.375v, too much vcore needed for the extra Mhz which i figure is like 4.7-4.8 maybe @ 1.39 or 1.4v so this seems a good 4.6 chip.
I wonder how much life the chip would have lost being left at auto and regularly seeing 1.4v+ daily.

 

[Clum]

Some? All? None? - nobody knows

There are guys who have been running 24/7 on 1.5+ since release and haven't shown any signs of degradation yet. Reckon 1.4 will turn out to be perfectly fine in the long run.

 

[Justintime]

I'm in that boat as well, keeping it under 1.4 for now, maybe one day i'll jack it up when the kit is cheap as chips (ha) like i did with my last E6600, 1.575v and 3.8GHz

 

[bulldog147]

Same here max idle vcore are 1.404V but under load are within the range of 1.356-368-380V for 4.60GHz The bios set at 1.350V at LLC 6