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3770k: Below average unit or bad overclocker? Any ideas?

post #1 of 8
Thread Starter 
Hey guys,

I was wondering how to test whether my CPU is really that bad, since I can't get a stable overclock. Maybe you can give me an advice how to improve it?

Anyway, my setup is:
MB: Gigabyte Z77x-d3h (bios - last stable release)
CPU: i7 3770K
Cooler: Noctua C12P SE14
PSU: OCZ ModXStream PRO 600W
GPU: integrated one
Memory: Corsair Vengeance Low Profile Black 16GB (2x8GB) DDR3 1600MHz (XMP turned on)

Stability, temperatures etc. are measured by OCCT

Problem:
I tried various settings (http://www.xtremesystems.org/forums/showthread.php?280517-Ivy-Bridge-Overclocking-Guide-(Extreme-LN2-Section-Guide-Included) , http://www.overclock.net/t/1249693/my-ivy-bridge-3770k-oc-results , + other settings)
My LLC is Turbo, voltage switching sth. is set to fast and profile is to high performance, saving functions are disabled, HT enabled, VT-x disabled, XMP on

I tried fix voltage increase (upto 4.5Ghz with 1.38V, 1.85V PLL, even increasing slightly VTT and DRAM voltage), temperatures were below 90, usually below 80.

I ran also voltage offset setup with 4.5Ghz on 1.35V, VTT 1.07V and again failed OCCT. Now I'm running 4.2Ghz on 1.3V, but that seems too high compared to other threads here.

Failure:
Sometimes its just OCCT fail (within a few minutes, not because of temp.), sometimes its BSOD.

Purpose of the computer: Numerical operations in R, so the frequency makes a lot of difference, but I need stability to run the code for a few days. (yes, I'm using all the cores with parallel package)


Does anybody maybe have a comment/advice for me?

Thank you!
post #2 of 8
Sounds like a bad clocker, anything needing 1.3v or more for 4.5ghz is below average, sell it or settle for a lower overclock.
post #3 of 8
Thread Starter 
thx for the reply..
that's what I was afraid of.. I was wondering why I have such a high stock Vcore.
I'll try to get a replacement


Have a nice day!
post #4 of 8
Just to see, try lowering your PLL voltage to 1.7 or so and see if it makes a difference.
Gaming PC
(16 items)
 
Asus G750jw
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CPUMotherboardGraphicsGraphics
Core i7 3770k  ASrock Extreme4 P67 Sapphire Dual X OC 7950 Sapphire Dual X OC 7950 
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8GB Corsair Vengeance 1866 Kingston V300 240gb (OS) Seagate 1tb (data) Corsair H60  
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Windows 7 Ultimate Samsung S27C750P 75Hz A-MVA Dell S2340m (x3) Corsair TX850 
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Azza Hurrican 2k ODAC Hifiman HE-500 O2 amp 
CPUGraphicsRAMHard Drive
Core i7 4700HQ GTX 765m 8GB DDR3L 1600 Corsair Force 3 120gb SSD 
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Gaming PC
(16 items)
 
Asus G750jw
(10 items)
 
 
CPUMotherboardGraphicsGraphics
Core i7 3770k  ASrock Extreme4 P67 Sapphire Dual X OC 7950 Sapphire Dual X OC 7950 
RAMHard DriveHard DriveCooling
8GB Corsair Vengeance 1866 Kingston V300 240gb (OS) Seagate 1tb (data) Corsair H60  
OSMonitorMonitorPower
Windows 7 Ultimate Samsung S27C750P 75Hz A-MVA Dell S2340m (x3) Corsair TX850 
CaseAudioAudioAudio
Azza Hurrican 2k ODAC Hifiman HE-500 O2 amp 
CPUGraphicsRAMHard Drive
Core i7 4700HQ GTX 765m 8GB DDR3L 1600 Corsair Force 3 120gb SSD 
Hard DriveCoolingOSMonitor
HGST 1TB Cooler Master Notepal U3 Windows 8.1 17-inch FHD 
PowerMouse
180 watt power brick Razer Deathadder 3G 
  hide details  
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post #5 of 8
If lowering pll doesn't work, try raising your LLC to extreme, disable HT, disable XMP, maintain your pll at default, set your processor power to max out at 300w and current 200A.

It is utmost vital that you note what bsod you get coz that will give you a rough idea of where the issue could be emanating from.

That motherboard is advertised as 6+2+1 power phase but that isn't true at all, analysis has it as 4 phase only, its not good for the longevity of any quad core with high overclocks
post #6 of 8
animator we have virtually the same motherboard and same cpu. I mad a thread here on how to overclock the 3770k - http://www.overclock.net/t/1392279/info-intel-3570k-3770k-overclocking-tips

Give it a shot, with ivy you only realistically need to change cpu vcore and cpu multi.
post #7 of 8
Thread Starter 
thank you all for the replies...

yes, I tried lowering PLL voltage, disabling HT,XMP and my max watts and amp are already set.

2Silent: I'll try your guide, as soon as I get my cpu back


UPDATE:

I have a new unit, which is running on 1.185 stock voltage. Is it normal or little bit higher?
anyway, it's 0.05 better than the last CPU. Overclocking still very unstable for 4.5Ghz + the heat waves came, so I am done.

2Silent: Guide is not working - if I leave turbo on and just adjust the voltage as you suggest there, turbo will kick the voltage to even 1.45 for 4.5Ghz (so I shut it down immediately). I have to OC the more difficult way.

Question: After this experience, I'm not sure if I will exchange the CPU again. How difficult is deliding? I've built only 8 computers so far, so I don't if I would be able to delid it without any damage.
Edited by animator - 7/1/13 at 10:58am
post #8 of 8
Thread Starter 
btw. I got to 4.4Ghz on 1.26V (1.284 shown in windows) with turbos/energy saving disabled, OCCT running for one hour so far (91C maxtemp). Below average unit again:-/
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