Intel Core i5 & i7 Sandy Bridge Overclocking and Feedback

[cadaveca]

That's why I set, verything, including memory timings, manually. I NEVER NEVER leave anything on "AUTO".

Problem is not there on my MSI Z68A-GD65, so maybe they have fixed the issue...sounds like BIOS problem, anyway, not exactly a hardware issue.

[heky]

I know, i have also set everything manually. I set all the voltages and timings manually and it still raises voltage under load. I think the "problem" is only on P67 MSI boards, not Z68. I think the difference is also in the bios, completely different UEFI for the P67 and Z68 line.

I even wrote to MSI technical support, and they said not to worry about it. I guess i will just have to wait and see if something goes wrong over time.

[Dj-ElectriC]

So... got my P8P67Pro from asus and i have started overcloking it
First stop - 4500MHZ. voltage required? 1.288V (didnt try lower yet :P )



Oh well... 4.6Ghz is stable aswell on that voltage





Continuing... 4.7Ghz aint kinder-garden, had to pump up the voltage



BTW thank you very much Lanzar for investing so many hours hand-picking this CPU and testing so much of them

[heky]

Sorry to dissapoint you, but running linx with just 772mb of memory is far from prof for being stable. Run prime blend for a couple of hours, you might be surprised.

[Dj-ElectriC]

I actualy did with that settings and it was rock solid, getting to 4.8Ghz tho was a b*tch... had required about 1.328V

[heky]

You mean 1.328v in bios?

[johnnyfiive]

Originally Posted by Dj-ElectriC

I actualy did with that settings and it was rock solid, getting to 4.8Ghz tho was a b*tch... had required about 1.328V

"Pics or it didn't happen."

[Chewers]

Kinda weird, cant OC memory. Set timings to 9-11-9-27 1T and 1.65V, but cant boot.. memCheck fail. I know - this memory can do much better then 1600Mhz.

[Wrigleyvillain]

Maybe your board undervolts dimms?

[cadaveca]

Subtimings. XMP Profile doesn't work? Then VCCIO.


IF that doesn't work, then it's the BIOS.

[Chewers]

Dunno, here is the review with says i can do it.. only im running p8p67 pro boards

[cadaveca]

Originally Posted by Chewers

Dunno, here is the review with says i can do it.. only im running p8p67 pro boards

oh. I get it; you're trying to OC like a review from another site, and it ain't working. That's normal. You could call it luck of the draw, and be happy. Nowhere does that kit advertize that it will OC the same with every kit, and if a review implies that, well...use your own judgement.

[Boneface]

Got bored and decided to try 5ghz. This was after 2 hrs of bc2

[Chewers]

Flawless..

P8P67 Pro With 2500k @ 5.1GHz
All Cores - 49
BLCK 104.1
PLL Overvoltage - Disable
1.440v in UEFI
VCCSA 0.925v
VCCIO 1.05v
CPU PLL Voltage: 1.8v
Load-Line Calibration: Ultra High
Phase Control: Extreme
Duty Control: Extreme
CPU Current Capability: 130%

2h in prime95 - max temp 59°C (All case fans max 1200rpm (2x12cm front, 12cm side, 12cm back, 14cm top), CPU chilled by Thermalright Silver Arrow

[random]

I've got my proc at 200+ offset in BIOS which gives me a 1.5vcore reading, although because of the power savings etc and with LLC off it never actually shows 1.5vcore as being the set voltage in my OS. On load I get 1.440vcore while idle is the usual 1.2v idle. I got the 1.5vcore reading from CPU-Z at the start of the program it shows 1.5vcore then reverts to idle 1.2 and load 1.44.

Since load line calibration is off and I am running the CPU under 1.52v is it safe to stay I am running within Intel spec? I am not too worried about degradation since I don't do any CPU heavy task so my temps are quite far from reaching the 72 max. I am mainly doing this for oblivion as I've been playing the game ALOT as of late and the extra mhz really does help.

[heky]

And you are applying this voltage for a overclock how high?

[random]

Originally Posted by heky

And you are applying this voltage for a overclock how high?

5ghz seems to be my wall so yeah 5ghz. Made alot of difference in Oblivion for me going from 4.5ghz HT to 5ghz HT off. My chip is quite average so I'll most likely end up needing more than 1.52vcore with LLC off if I were to use HT and clock to 5ghz, but again load voltage is only at 1.440vcore.

[heky]

When you say load voltage, what are you loading it with? Games or Prime95? Why not use LLC and set a lower voltage instead. Modern LLC systems are safe.

[random]

Originally Posted by heky

When you say load voltage, what are you loading it with? Games or Prime95? Why not use LLC and set a lower voltage instead. Modern LLC systems are safe.

Prime 95 Blend and small ftt. Well I generally idle at 1.2vcore and load at 1.440 so I am assuming that this is what my CPU voltages are set to 24/7 and I don't run a fixed voltage because I don't want to run my chip outside of Intel specs, I've read somewhere from TPU I think from this thread actually that the 1.52v max spec that Intel released didn't actually consider LLC and that 1.52v max was for systems with LLC disabled. So I want to back myself up really and I don't have any luck with fixed voltages at all, I can use a moderate amount of LLC and tweak the voltages so that the load is what it would be with LLC off but I'd end up needing more vcore in the end anyway so the offset settings start to outweight to what I had my fixed voltage at.

[Darkleoco]

My Heaven BenchMark with standard clocks on everything. Are these good or bad for no overclocking yet?

Core and GPU:

Core 0: Max 51 C
Core 1: Max 49 C
Core 2: Max 48 C
Core 3: Max 47 C

Gpu 1 maxed 60 C and Gpu 2 maxed at 59 C.

Also what should my first overclock attempt be?

[LAN_deRf_HA]

Can the epu be run with a 4.4 ghz oc? Gotten into efficiency now that I've gone platinum.

[cadaveca]

Originally Posted by LAN_deRf_HA

Can the epu be run with a 4.4 ghz oc? Gotten into efficiency now that I've gone platinum.

Sure can. You may also want to tweak the VRM settings, as gains in power savings can be had there as well.



As far as I am concerned, if you are running 1.5v memory, no PLL overvoltage, and no loadline calibration, anything is fair game for tweaks.

[felix014]

hi all, i have a question about i7 2600k OC (with cooler master hyper 212 plus), did not wanted to make new thread.

I'm new at this stuff and have a simple question.I wanted to get 4.2ghz, on asus P8Z68 mobo, do i have to change anything else than the multiplier to 42? or do i also need to struggle with all that voltage settings etc? if so, can anyone with a similar mobo enlighten me?

thanks in advance.

[Millennium]

Hi Felix,

You should be ok just changing the multiplier. If you change the max turbo multi it will still use speedstep and only speed up when it needs to (better for efficiency).

If you have more questions about what exactly to change please post again I don't have that exact board but someone else is bound to have it.... good luck.

[felix014]

Thanks for the reply Millennum, i dont want to change anything else, i just want a stable system to run 7/24 without turbo, with at least 4.2 ghz.