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Windows 7: Undervolting Ram bsod

23 Nov 2010   #1
Len19

Windows 7 64 bit
 
 
Undervolting Ram bsod

Hello, i am using a set of Dominator GT 2000mhz Ram Amazon.com: Corsair CMG6GX3M3A2000C8 6 GB Dominator GT PC3-16000 2000Mhz 240-pin Triple Channel DDR3 Memory Kit: Electronics

Dram Bus Voltage should be 1.65v, mine are set at 1.50v underclocked to 1066mhz on a Gigabyte x-58a-ud3r motherboard, and at the moment my pc gets multiple bsod's attributed to memory corruption. I am wondering is this voltage setting may be responsible for the errors, and if a simple bios Dram bus voltage change would fix it.


My System SpecsSystem Spec
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23 Nov 2010   #2
LiquidSnak

W7 Professional x64
 
 

It certainly won't hurt to try it. Also, if you can run memtest it would be able to tell you if it's a bad stick or not.
My System SpecsSystem Spec
23 Nov 2010   #3
Len19

Windows 7 64 bit
 
 

A 12 pass run of memtest86 showed 1 error, i asked someone if i should rma, he suggested that with only 1 error it's more likely a bios setting issue than a hardware issue.
My System SpecsSystem Spec
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23 Nov 2010   #4
LiquidSnak

W7 Professional x64
 
 

Set the RAM to proper settings, and give memtest another try.
My System SpecsSystem Spec
24 Nov 2010   #5
GeneO

Windows 10 Pro. EFI boot partition, full EFI boot
 
 

Quote   Quote: Originally Posted by Len19 View Post
Hello, i am using a set of Dominator GT 2000mhz Ram Amazon.com: Corsair CMG6GX3M3A2000C8 6 GB Dominator GT PC3-16000 2000Mhz 240-pin Triple Channel DDR3 Memory Kit: Electronics

Dram Bus Voltage should be 1.65v, mine are set at 1.50v underclocked to 1066mhz on a Gigabyte x-58a-ud3r motherboard, and at the moment my pc gets multiple bsod's attributed to memory corruption. I am wondering is this voltage setting may be responsible for the errors, and if a simple bios Dram bus voltage change would fix it.
Dunno, depends. Use CPU-Z to look at the SPD profiles. There may be one for 1066 MHz. If so it will tell you the voltage and timings for the profile. Then set those in your BIOS (or use the XMP option if your BIOS supports it to select and set the profile).
My System SpecsSystem Spec
24 Nov 2010   #6
smarteyeball

 
 

I'm curious as to why you are running 2000mhz RAM @ 1066mhz?

Why not run it at it's rated timings and voltages?

Whatever the reason increasing the DRAM volts should certainly help.
My System SpecsSystem Spec
24 Nov 2010   #7
johngalt

 

DDR3 spec is 1.5 according to Wikipaedia.... DDR3 SDRAM - Wikipedia, the free encyclopedia

Corsair says it can be easily OC'd at 1.65 - but that is technically exceeding DDR3 specs. In fact, he is not undervoltig them, he is just not over-volting them. Which I find odd, b/c I could have sworn DDR3 was stock 1.65 not 1.5....

I need to research this a bit more....
My System SpecsSystem Spec
26 Nov 2010   #8
Len19

Windows 7 64 bit
 
 

Quote   Quote: Originally Posted by smarteyeball View Post
I'm curious as to why you are running 2000mhz RAM @ 1066mhz?

Why not run it at it's rated timings and voltages?

Whatever the reason increasing the DRAM volts should certainly help.
Main reason, it came at 1333mhz by mobo default, and i was getting bsod issues, it automatically dropped itself down to 1066mhz after more bsods. 2000mhz ram usually can't get that high most of the time. I'll raise the ram clock speed once i get the ram stable.
My System SpecsSystem Spec
26 Nov 2010   #9
smarteyeball

 
 

Fair enough.

Although a 3x2GB kit rated for 2000mhz should be able to run at spec without issues. It's normally when you run 12GB that it can get a bit iffy.

If you haven't already, set the DRAM volts to 1.65V (or 1.64V if your BIOS won't allow 1.65V) loosen the timings even further to 9-9-9-24 @1066mhz and even bump your QPI/Vtt volts a few steps and re-run memtest. This will rule out BIOS settings as an issue.

If you still get any errosr with sufficient volts and very loose timings, then it's most likely a bad module (or a dimm slot if it's a new board).
My System SpecsSystem Spec
26 Nov 2010   #10
Hopalong X

Windows7 Pro 64bit SP-1; Windows XP Pro 32bit
 
 

  1. 6 x 1.5V DDR3 DIMM sockets supporting up to 24 GB of system memory(Note 1)
  2. Dual/3 channel memory architecture
  3. Support for DDR3 2200/1333/1066/800 MHz memory modules
  4. Support for non-ECC memory modules
  5. Support for Extreme Memory Profile (XMP) memory modules
Your moboard is XMP capable.

Mike
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 Undervolting Ram bsod




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