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Overclocking help

post #1 of 15
Thread Starter 
I have a few questions before I start overclocking my PC manually. I aim to reach 4.6GHz stable for 24/7 operation - and I believe that I won't use all of the full horsepower fully, maybe 8 hours a day.

Before I ask, my spec: i7 2600k and some latest Asus board (the pro version).

1) Should I set the manual vcore to determine what voltage is the most stable first? Starting from around 1.300v? Or should I just set the offest and increase the value until I reach the stability? BTW I'm still not 100% sure how the offset and the manual work. Say.... base voltage is 1.23 and if the offset is set as +.20, then the voltage will become 1.43? That's without the PPL overvoltage feature (and another one) being disabled. Right?

2) Does the offset vcore save power? If so, then yes I'll use it instead of the manual one. But I'm just wondering, how would that work with speedstep? Should I disable speedstep and still save power from the offset vcore?

3) Should the PPL overvoltage feature be enabled? I was Reading that the feature could cause the PC to malfunction if the Sleep feature is used. Not that I use the Sleep feature, but still.

4) I have 16GB ram (4x4gb) and I've heard that 4 sticks have to use more voltage than 2 sticks to get an OC stability. Should I take that into consideration when overclocking my processor?

5) What value should the LLC feature use for 4.6GHz? High, ultra high or extreme (100%)?*

6) What values should the Phase Control and Duty Control features use? Extreme? T.Probe?** * * * **

Many thanks in advance!
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Intel Core i7 2600K (4.6gHZ @ OffsetV + SpeedStep) Asus P8P67 PRO 2GB XFX HD 6970 16GB g.SKILL (1600mHZ) 
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Intel Core i7 2600K (4.6gHZ @ OffsetV + SpeedStep) Asus P8P67 PRO 2GB XFX HD 6970 16GB g.SKILL (1600mHZ) 
Hard DriveHard DriveHard DriveOptical Drive
128gb SSD Samsung 830 3TB HDD Seagate 1TB HDD Seagate DVD Asus QuietTrack 
CoolingCoolingOSMonitor
Noctua D14 11 mini cooling fans (Red Orange LED) Windows 7 Ultimate (64BIT) 23" Samsung PX2370 
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post #2 of 15
Thread Starter 
bumpbump
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Intel Core i7 2600K (4.6gHZ @ OffsetV + SpeedStep) Asus P8P67 PRO 2GB XFX HD 6970 16GB g.SKILL (1600mHZ) 
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128gb SSD Samsung 830 3TB HDD Seagate 1TB HDD Seagate DVD Asus QuietTrack 
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Noctua D14 11 mini cooling fans (Red Orange LED) Windows 7 Ultimate (64BIT) 23" Samsung PX2370 
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Intel Core i7 2600K (4.6gHZ @ OffsetV + SpeedStep) Asus P8P67 PRO 2GB XFX HD 6970 16GB g.SKILL (1600mHZ) 
Hard DriveHard DriveHard DriveOptical Drive
128gb SSD Samsung 830 3TB HDD Seagate 1TB HDD Seagate DVD Asus QuietTrack 
CoolingCoolingOSMonitor
Noctua D14 11 mini cooling fans (Red Orange LED) Windows 7 Ultimate (64BIT) 23" Samsung PX2370 
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post #3 of 15
Ok first read this:

Sandy Overclocking by Sin

Ok so there you go my friend. Enjoy and always watch your temps with a temp monitor. Some chips require higher vCores to get stable like mine is 4.5GHz and vid is 1.355. So dont be afraid of it just dont push your vid past 1.45 IMO also temps should be below 70c. Enjoy and post back letting me know if you got it.

P.S. use prime blend or IBT to test for stability.
Upgrayedd
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post #4 of 15
I have only OC'ed my i7 950 yet, not sure if it's all the same for SB but at least, yes, 4 sticks require more uncore (everything except cores in CPU, like memory controllers) voltage. Power saving features might cause instability, and I think if you OC you don't worry too much about power. About the offset thing I'm not sure. If I remember correctly, offset vcore you should have off, speedstep off and load-line calibration on. Need confirmation from someone else on this tho.

If your honestly that much worried about power I'd say don't OC at all

And yes you should always have manual vcore because the auto one tends to use WAY too much. I don't know how much voltage you need with SB, I think I remember someone using around 1.4v or something but you just have to work your way upwards with clock and voltage and see when your temps get too high I guess. Every chip is unique.
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post #5 of 15
Quote:
Originally Posted by Dimaggio1103 View Post
also temps should be below 70c.
At this moment in time, temps are a preference. Sb throttles at 95 or 92c so what ever you feel comfortable at. It is advised to keep it below 85 or 80c but personally I keep mine below 70c.
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post #6 of 15
Quote:
Originally Posted by munaim1 View Post
At this moment in time, temps are a preference. Sb throttles at 95 or 92c so what ever you feel comfortable at. It is advised to keep it below 85 or 80c but personally I keep mine below 70c.
I agree. that seems to be the general comfort level of people is 70c. mine under load is 63c so I feel good
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post #7 of 15
Thread Starter 
Thanks, I already have read that guide before. hence this thread...
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CPUMotherboardGraphicsRAM
Intel Core i7 2600K (4.6gHZ @ OffsetV + SpeedStep) Asus P8P67 PRO 2GB XFX HD 6970 16GB g.SKILL (1600mHZ) 
Hard DriveHard DriveHard DriveOptical Drive
128gb SSD Samsung 830 3TB HDD Seagate 1TB HDD Seagate DVD Asus QuietTrack 
CoolingCoolingOSMonitor
Noctua D14 11 mini cooling fans (Red Orange LED) Windows 7 Ultimate (64BIT) 23" Samsung PX2370 
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My System
(18 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 2600K (4.6gHZ @ OffsetV + SpeedStep) Asus P8P67 PRO 2GB XFX HD 6970 16GB g.SKILL (1600mHZ) 
Hard DriveHard DriveHard DriveOptical Drive
128gb SSD Samsung 830 3TB HDD Seagate 1TB HDD Seagate DVD Asus QuietTrack 
CoolingCoolingOSMonitor
Noctua D14 11 mini cooling fans (Red Orange LED) Windows 7 Ultimate (64BIT) 23" Samsung PX2370 
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post #8 of 15
Thread Starter 
I'm not comfortable with that guide... coz I'm using an anus
board

should I oc RAM first and then CPU?
My System
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Intel Core i7 2600K (4.6gHZ @ OffsetV + SpeedStep) Asus P8P67 PRO 2GB XFX HD 6970 16GB g.SKILL (1600mHZ) 
Hard DriveHard DriveHard DriveOptical Drive
128gb SSD Samsung 830 3TB HDD Seagate 1TB HDD Seagate DVD Asus QuietTrack 
CoolingCoolingOSMonitor
Noctua D14 11 mini cooling fans (Red Orange LED) Windows 7 Ultimate (64BIT) 23" Samsung PX2370 
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Microsoft Wireless Keyboard TX650 Corsair Enthusiast Coolermaster HAF 932 Microsoft Wireless Mouse 
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My System
(18 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 2600K (4.6gHZ @ OffsetV + SpeedStep) Asus P8P67 PRO 2GB XFX HD 6970 16GB g.SKILL (1600mHZ) 
Hard DriveHard DriveHard DriveOptical Drive
128gb SSD Samsung 830 3TB HDD Seagate 1TB HDD Seagate DVD Asus QuietTrack 
CoolingCoolingOSMonitor
Noctua D14 11 mini cooling fans (Red Orange LED) Windows 7 Ultimate (64BIT) 23" Samsung PX2370 
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Microsoft Wireless Keyboard TX650 Corsair Enthusiast Coolermaster HAF 932 Microsoft Wireless Mouse 
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post #9 of 15
Quote:
Originally Posted by Serady View Post
I'm not comfortable with that guide... coz I'm using an anus
board

should I oc RAM first and then CPU?
No the cpu first.Worry about the ram later.

Just simply up the multiplier a bit and run ibt to check for stability.If it passes up the multiplier more.Vcore voltage will eventually need to be bumped up a bit.
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My System
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I5-750 4.3@1.375v Asus Maximus III Formula Asus ENGTX465 4gb G Skill 2000 Mhz.Trident @2133 9-9-9-27 
Hard DriveOptical DriveCoolingOS
OCZ VERTEX 2 50GB SSD/WD 500GB Blue/WD640GB Black Samsung DVD/RW Corsair H-50 Windows 10 home 64 Bit Retail 
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ASUS 24"1080P LED Asus VE248H Abs M1 Cooler master silent pro 600 modular M600 RS-60... Lian Li Lancool PCK-58 
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post #10 of 15
Thread Starter 
Ok, finally did it! I have OC'd to 4.6ghz at 1.325~1.330v (set the vcore offset at +0.020).

Booted that up. So far no bios or boot issues, even though speedstep and cstates are all enabled (except the power saving one). But I've been stress testing the CPU with Prime95 (small FTL) for about 20 minutes now. I'll leave it on for a couple of hours. The max temp hit 75C according to RealTemps. Not too worried because I will barely hit that max temp if I game or multitask anyways.

So, if this is actually a stable OC after hours of no issues, I might then up the multi to 48. If there are crashes with 48, then I'll change the LLC to Ultra High (it's currently set at High) and see what happens. If still crashes, then I probably will go back to 46 and maybe try lowering the vcore offset.

my settings:
epu power saving mode: off
turbo multi set to 46 on every core
ppl overvoltage is off (weird I can't find it in the BIOS)
LLC: high
vrm fixed frequency: 350
phase control: extreme
duty control: t.probe
vcore offset: +0.020 (1.320~1.330v)

the rest are set to default.
My System
(18 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 2600K (4.6gHZ @ OffsetV + SpeedStep) Asus P8P67 PRO 2GB XFX HD 6970 16GB g.SKILL (1600mHZ) 
Hard DriveHard DriveHard DriveOptical Drive
128gb SSD Samsung 830 3TB HDD Seagate 1TB HDD Seagate DVD Asus QuietTrack 
CoolingCoolingOSMonitor
Noctua D14 11 mini cooling fans (Red Orange LED) Windows 7 Ultimate (64BIT) 23" Samsung PX2370 
KeyboardPowerCaseMouse
Microsoft Wireless Keyboard TX650 Corsair Enthusiast Coolermaster HAF 932 Microsoft Wireless Mouse 
Audio
Sony Stereo 
  hide details  
Reply
My System
(18 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 2600K (4.6gHZ @ OffsetV + SpeedStep) Asus P8P67 PRO 2GB XFX HD 6970 16GB g.SKILL (1600mHZ) 
Hard DriveHard DriveHard DriveOptical Drive
128gb SSD Samsung 830 3TB HDD Seagate 1TB HDD Seagate DVD Asus QuietTrack 
CoolingCoolingOSMonitor
Noctua D14 11 mini cooling fans (Red Orange LED) Windows 7 Ultimate (64BIT) 23" Samsung PX2370 
KeyboardPowerCaseMouse
Microsoft Wireless Keyboard TX650 Corsair Enthusiast Coolermaster HAF 932 Microsoft Wireless Mouse 
Audio
Sony Stereo 
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