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Overclocking with Baseclock on Sabertooth Z77 and 3770k

post #1 of 5
Thread Starter 
Hi, so at the moment I'm on air cooling (Hyper 212 Evo) and have been able to get my 3770k stable (2 hours Prime while watching videos, browsing, etc. which is enough to me) at 4.6 ghz and 1.29 volts, ONLY by turning off EIST and C-states, and setting voltage manually to 1.29 (offset and turbo mode was only stable to 4.5 ghz).

Right now I'm trying to get it stable at 4.7 ghz at about 1.3x volts, but I'm having difficulties with temperature climbing above 70C in Prime before I have a chance to see if it is stable for enough time (70c as measured in Asus Thermal Monitor).



If I'm not able to get 4.7 this way, and though I know it is not going to make any appreciable difference in performance, I'd like to squeeze a bit more performance out of the system and I was thinking about overclocking the baseclock just a bit, to 101-103mhz, which I think might OC my memory slightly as well if I'm not mistaken.

Is there any reason NOT to do this? I've read that trying to go above 105mhz can actually cause some kind of damage, so if this is a concern then I may as well not do it. However if it is not likely to actually cause damage I might want to explore it a bit.


Any thoughts? Thanks.
My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7 3770k @ 4.7 ghz 1.34V Asus Sabertooth Z77 MSI Twin Frozr III 7950  Gskill Trident X 2400mhz 16gb 
Hard DriveCoolingOSMonitor
Samsung 840 Pro SSD Swiftech H220x Windows 7 64 Bit Qnix QX2710 Evolution II 27" 2560x1440p  
KeyboardPowerCaseMouse
Corsair Vengeance K70 Corsair TX 750W  Antec P280 Gigabyte M6980X 
AudioAudioAudio
Sound Blaster ZXR  Audioengine A5+ Audioengine S8 
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My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7 3770k @ 4.7 ghz 1.34V Asus Sabertooth Z77 MSI Twin Frozr III 7950  Gskill Trident X 2400mhz 16gb 
Hard DriveCoolingOSMonitor
Samsung 840 Pro SSD Swiftech H220x Windows 7 64 Bit Qnix QX2710 Evolution II 27" 2560x1440p  
KeyboardPowerCaseMouse
Corsair Vengeance K70 Corsair TX 750W  Antec P280 Gigabyte M6980X 
AudioAudioAudio
Sound Blaster ZXR  Audioengine A5+ Audioengine S8 
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post #2 of 5
Thread Starter 
Also, and I know this has been answered, but any comment on acceptable operating temperatures for air cooling on 1.3x volts at 4.7 ghz?

I'm running Real Temp now with Prime 95 at 1.33 v and getting: 79 82 84 81
My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7 3770k @ 4.7 ghz 1.34V Asus Sabertooth Z77 MSI Twin Frozr III 7950  Gskill Trident X 2400mhz 16gb 
Hard DriveCoolingOSMonitor
Samsung 840 Pro SSD Swiftech H220x Windows 7 64 Bit Qnix QX2710 Evolution II 27" 2560x1440p  
KeyboardPowerCaseMouse
Corsair Vengeance K70 Corsair TX 750W  Antec P280 Gigabyte M6980X 
AudioAudioAudio
Sound Blaster ZXR  Audioengine A5+ Audioengine S8 
  hide details  
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My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7 3770k @ 4.7 ghz 1.34V Asus Sabertooth Z77 MSI Twin Frozr III 7950  Gskill Trident X 2400mhz 16gb 
Hard DriveCoolingOSMonitor
Samsung 840 Pro SSD Swiftech H220x Windows 7 64 Bit Qnix QX2710 Evolution II 27" 2560x1440p  
KeyboardPowerCaseMouse
Corsair Vengeance K70 Corsair TX 750W  Antec P280 Gigabyte M6980X 
AudioAudioAudio
Sound Blaster ZXR  Audioengine A5+ Audioengine S8 
  hide details  
Reply
post #3 of 5
Quote:
Originally Posted by Robertdt View Post

Hi, so at the moment I'm on air cooling (Hyper 212 Evo) and have been able to get my 3770k stable (2 hours Prime while watching videos, browsing, etc. which is enough to me) at 4.6 ghz and 1.29 volts, ONLY by turning off EIST and C-states, and setting voltage manually to 1.29 (offset and turbo mode was only stable to 4.5 ghz).

Right now I'm trying to get it stable at 4.7 ghz at about 1.3x volts, but I'm having difficulties with temperature climbing above 70C in Prime before I have a chance to see if it is stable for enough time (70c as measured in Asus Thermal Monitor).



If I'm not able to get 4.7 this way, and though I know it is not going to make any appreciable difference in performance, I'd like to squeeze a bit more performance out of the system and I was thinking about overclocking the baseclock just a bit, to 101-103mhz, which I think might OC my memory slightly as well if I'm not mistaken.

Is there any reason NOT to do this? I've read that trying to go above 105mhz can actually cause some kind of damage, so if this is a concern then I may as well not do it. However if it is not likely to actually cause damage I might want to explore it a bit.


Any thoughts? Thanks.

I use bclk fairly often although not usually running 24/7, the possible issue with increasing bclk is that other frequencies like pci-e & sata are increased with it.
I've never run into issues up to about 109 bclk short term, one of my ssds will refuse to work after that, although other ssds & HDDs are fine with it. Gpus can also be affected since they are basically getting overclocked behind the scenes.
I've never actually heard of hardware being damaged by increasing bclk (at least nothing that could be confirmed as caused by the bclk increase), but data corruption is a possibility.
    
CPUMotherboardGraphicsRAM
i7 990x/3930k/3770k/4770k GB x58a-OC/Asus RIVE/x79 gd65/z77 mpower/z77 MV... gtx480s/gtx580s/7970s/680s/Titan Hyper/PSC/BBSE/Hynix/Samsung 
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samsung 2320 Razer Lycosa ax1200 carboard box 
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CPUMotherboardGraphicsRAM
i7 990x/3930k/3770k/4770k GB x58a-OC/Asus RIVE/x79 gd65/z77 mpower/z77 MV... gtx480s/gtx580s/7970s/680s/Titan Hyper/PSC/BBSE/Hynix/Samsung 
Hard DriveOptical DriveCoolingOS
HDDs/SSDs DVD Air/water/phase/copper pot Windowz 
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samsung 2320 Razer Lycosa ax1200 carboard box 
Mouse
Trackball 
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post #4 of 5
Thread Starter 
Thanks. I'm going to start out with 101.0 mhz as my base clock. This gives me 46 x 101 = 4646 as my processor frequency and 24mhz addition on my ram frequency.
My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7 3770k @ 4.7 ghz 1.34V Asus Sabertooth Z77 MSI Twin Frozr III 7950  Gskill Trident X 2400mhz 16gb 
Hard DriveCoolingOSMonitor
Samsung 840 Pro SSD Swiftech H220x Windows 7 64 Bit Qnix QX2710 Evolution II 27" 2560x1440p  
KeyboardPowerCaseMouse
Corsair Vengeance K70 Corsair TX 750W  Antec P280 Gigabyte M6980X 
AudioAudioAudio
Sound Blaster ZXR  Audioengine A5+ Audioengine S8 
  hide details  
Reply
My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7 3770k @ 4.7 ghz 1.34V Asus Sabertooth Z77 MSI Twin Frozr III 7950  Gskill Trident X 2400mhz 16gb 
Hard DriveCoolingOSMonitor
Samsung 840 Pro SSD Swiftech H220x Windows 7 64 Bit Qnix QX2710 Evolution II 27" 2560x1440p  
KeyboardPowerCaseMouse
Corsair Vengeance K70 Corsair TX 750W  Antec P280 Gigabyte M6980X 
AudioAudioAudio
Sound Blaster ZXR  Audioengine A5+ Audioengine S8 
  hide details  
Reply
post #5 of 5
Thread Starter 
Hey, so the Ivy Bridge Overclocking Guide Asus says:


" BCLK -Base Clock
Allows you to adjust the CPU and VGA frequency to enhance system performance. Keep at 100. Do NOT change! Increasing this will overclock DMI and PCI-E busses and may result in damaging them or anything connected to them."


http://www.overclock.net/t/1291703/ivy-bridge-overclocking-guide-asus-motherboards



Is this accurate?

There looks to be contradictory information as it also states in the same guide by another author that you can OC the BCLK more with IB than SB (suggesting that it is ok to do so)....


Any thoughts on this?
My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7 3770k @ 4.7 ghz 1.34V Asus Sabertooth Z77 MSI Twin Frozr III 7950  Gskill Trident X 2400mhz 16gb 
Hard DriveCoolingOSMonitor
Samsung 840 Pro SSD Swiftech H220x Windows 7 64 Bit Qnix QX2710 Evolution II 27" 2560x1440p  
KeyboardPowerCaseMouse
Corsair Vengeance K70 Corsair TX 750W  Antec P280 Gigabyte M6980X 
AudioAudioAudio
Sound Blaster ZXR  Audioengine A5+ Audioengine S8 
  hide details  
Reply
My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7 3770k @ 4.7 ghz 1.34V Asus Sabertooth Z77 MSI Twin Frozr III 7950  Gskill Trident X 2400mhz 16gb 
Hard DriveCoolingOSMonitor
Samsung 840 Pro SSD Swiftech H220x Windows 7 64 Bit Qnix QX2710 Evolution II 27" 2560x1440p  
KeyboardPowerCaseMouse
Corsair Vengeance K70 Corsair TX 750W  Antec P280 Gigabyte M6980X 
AudioAudioAudio
Sound Blaster ZXR  Audioengine A5+ Audioengine S8 
  hide details  
Reply
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