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Voltage ram sandy bridge

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October 7, 2011 1:55:20 AM

I am building some sandy bridge systems with i72600K's and i5 2500K's using MSI GD55 and GD80 MB's.

I am looking at ram and reading a whole lot of people claiming that 1.5V is the max you can put into a sandy bridge. I have found absolutely no official release from intel or any reputable testing site to support these statements. I have however found that intel states sandy bridge can handle 1.35-1.8V on ram and you do not need to keep the VTT and ram voltage with in any margin from one another.

I have ran 1600Mhz kits on 1156 systems at 1.8V during over clocking and not had issues. These will be my first sandy bridge builds and i want to hear what issues people are having with them and where the hell the idea is that you need to use 1.5v ram. i have never in my life used DDR2 or 3 at 1.5V its always been 1.65.
a b } Memory
October 7, 2011 4:54:57 AM

The 1.5 V had to come from somewhere. I prefer to go right to the source.

Page 11 of the 2nd Generation Intel Core Processor Family Desktop Datasheet

Section 1.2.1 System Memory Support
  • DDR3 I/O Voltage of 1.5 V


  • Page 80 - Table 7-6. Processor System Agent I/O Buffer Supply DC Voltage and Current Specifications

    VDDQ - Processor I/O supply voltage for DDR3

    Minimum: 1.425 V
    Typical: 1.5 V
    Maximum: 1.575 V

    Couldn't be any clearer than that.
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    October 7, 2011 4:56:48 AM

    k, so much conflicting data. on one intel product sheet for there CPU it stated 1.8v and this sheet shows 1.575. ill pick up some 1.5 ram then. perhaps gskill.
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    a c 251 } Memory
    October 7, 2011 12:13:50 PM

    Gskill and Corsair are the favorites at the moment.
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