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MCH Voltage Recommendations for Gigabyte EP45-DS3R

  • Chipsets
  • Gigabyte
  • Memory
  • Overclocking
Last response: in Overclocking
August 2, 2008 5:40:30 AM

Ok...I'm working on getting my memory stable (not overclocked) and believe it may have caused a freeze-up in Windows today (required a hard restart by turning off the power supply in back). My Corsair Dominator memory will pass Memtest86+ in pairs at 2.13V (my motherboard has some Vdroop so setting at 2.1V actually gives less voltage). Now I have 2 pairs in (8GB) total and I think my MCH (Northbridge) voltage may be too low. It is defaulted at 1.1V. What should I safely change it to, seeing as it is only cooled by a heat sink on the EP45-DS3R? My processor (Q9450) is at 3.2GHz and my memory isn't really overclocked (1066MHz). I just want to make my system stable? I've heard bumping the MCH all the way to 1.4V but that seems like a huge jump. Any thoughts, or do I just keep playing with Memtest86+ and gradually bump the MCH voltage up until everything seems good and I get 0 errors?

More about : mch voltage recommendations gigabyte ep45 ds3r

August 3, 2008 2:08:02 PM

If memtest checks out, why worry? If you want, up mch a notch & memtest all sticks together. I'd keep it around 1.5v on air.
August 3, 2008 7:45:48 PM

Unfortunately, my motherboard or memory didn't like the bump up. I tried it at 1.3V and ended up with a frozen computer. It also froze in Memtest. Right now I have the MCH set at "Auto" and it passed Memtest, so I guess I'll leave it here. It also passed on "Normal." I'm still trying to figure out what the difference between Auto and Normal is, and if there is a benefit to using one over the other.
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August 4, 2008 12:39:58 PM

If you set voltages to auto, the bios still sets the voltages. You can see them under hardware monitor or something like that in bios. Note the auto voltage on mch.
a b } Memory
a b K Overclocking
June 25, 2009 9:24:38 PM

Can somebody help me?
I have a problem:

- i bought this motherboard (ga ep45c ds3) 1 weeks ago. I have 2, 1-1Gb ddr3 rams. The problem:
When I installed the XP(sp2) to my computer, and I experienced (after 2 hours system running time e.g.: xfire, msn, nvidia driver) blue screen :S --> this just restarted my computer approx: 6 times.. -.-

First I thought: the problem was my OS. I have just intalled win vista ultimate. The blue screen appeared after exiting Call of duty 2 :S

- than I tried with 1 GB- single memory. I thought of the memory...but in "separated mode" they were good :S

I am at a loss... please help me guys
(my email: