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X79 Sabertooth 3820 Auto-overclocked?

post #1 of 5
Thread Starter 
Just got the system built, 3820 x79 sabertooth, windows 8 64-bit, hyperx 1600mhz ram 16gb, 680 gtx 4gb, 850watt psu, 128gb ssd, 1tb HD WD black. First time I turned on the system I just shut off the Under clocking, where it turns down your processor's speed for less power usage. Then I continued to install windows 8 on to my system. After windows 8 was done I installed the Asus software and checked my four cores MHz, just to see what they were currently running on. To my surprise is was at 4677 MHz, I freaked out alittle because I've never touched any of the overclocking settings, so I ran some intelburn tests just to see if it was stable and it passes the tests. I'm just curious if anyone has ever had this happen before on this motherboard? Or any advice into making sure nothing is set to high. Current vcore is set at 1.38 and Temps don't go higher than 40C while gaming on intelburn it jumped to 53C during a 10 series test. Vcore temp also jumped to around 50C. Thanks for any advice.
post #2 of 5
Thread Starter 
Also just a note I'm using a H80i with fans set on Performance.
post #3 of 5
Thread Starter 
Blck Freq 126.375
Vcc 1
cpu pll 1.8
Vtt cpu 1.05
post #4 of 5
Welcome to OCN!

The temps are fine, the voltage is acceptable, although if you tune it manually, you may get lower than that.

You should go into the BIOS and see exactly what is turned on, it is not supposed to auto-overclock like that by default. I suspect that the BCLK strap is at 1.25 instead of 1.00.

What the motherboard does do automatically if you have RAM with a XMP profile is, if you enable the XMP profile, it will also overclock the CPU to 3.8 Ghz on all cores instead of just one core, so effectively the CPU speed will go from the stock 3.6 Ghz on all cores to 3.8 Ghz.

You can read more about it here: http://www.anandtech.com/show/6214/multicore-enhancement-the-debate-about-free-mhz


Edit:
Quote:
Originally Posted by Antisyorotomo View Post

Blck Freq 126.375
Vcc 1
cpu pll 1.8
Vtt cpu 1.05


Yep, just like I suspected, the BCLK strap is above normal, for normal CPU speed it should be at 100, by the way, you can get up to 4.3 Ghz by only changing the multiplier, above that you need to change the BCLK strap.
Edited by tpi2007 - 3/19/13 at 7:52pm
 
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Metro 2033 review
Metro 2033
CPUMotherboardGraphicsRAM
Core i7-3820 Asus Sabertooth X79 MSI GTX 750 Ti TF Gaming 16 GB Corsair DDR3 1866 Mhz Dominator 
Hard DriveOptical DriveCoolingOS
Samsung SSD 830 128GB + WD Caviar Black 1TB Sony Optiarc DVD-RW Corsair A70 + Noiseblocker M12-P Windows 7 Home Premium 64-bit 
MonitorKeyboardPowerCase
BenQ RL2455HM Cooler Master Octane Corsair AX750 Professional Modular 80 Plus Gold Cooler Master HAF 912 Plus 
Mouse
Cooler Master Octane 
  hide details  
Reply
post #5 of 5
Thread Starter 
Just was curious how I ended up making it go that high without really touch anything. Just scared me thought my stuff was going to catch fire lol. Thanks for the information, I'm just glad that its within safe limits.
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