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Help with Sandy + 1866 mem OC

post #1 of 2
Thread Starter 
Hey guys. I just got a i5 2500k, Z68X-UD4, and G.Skill Sniper 1866mhz 9-10-9-28 memory. I am not new at overclocking at all and actually quite experienced with it, but I am not sure whether I will need to RMA my ram or I just need to fine tune some things. I have set the OC to 4.5Ghz with 1.32 vcore under load and it seems fine with that. I have done a few 20 passes with IBT and last night did 40 passes with close to maximum amount of ram and everything showed to be stable, all of the results matched, and everything seemed fine, but on the final pass it came up with a critical error saying if I had UAC enabled to disable it or my system may be unstable (in other words not the usual message that comes up saying you are unstable. some of you guys might know what messege I'm talking about. I have also been doing Prime 95 blend and had gotten away with 7 hours before I stopped it, but then after that IBT run every time I try a blend it fails almost instantly.

I have reset my OC and just enabled XMP and am running a blend and things seem fine so far. QPI/VTT is on auto at the moment.

One thing I really want to know is what I need to be entering for QPI voltage in relation to my OC and the 1866 ram and if that is usually needed. I had selected from 1.08-1.1 give or take (this board gives more than I enter at load for example if I enter 1.1 it will show 1.13 or around there at load. I am familiar with the IMC on 1366, but for 1155 it has proved to me that I need to learn more about when the extra QPI is needed and how much for any given OC or ram settings.

I would think that that's the only thing I need to get right since I just enter what the ram is rated for. I just wanted a little feedback on this as I just need to hear from other people as it's hard for me to google and find things that are helpful for me.

And another weird thing is memtest will throw tons of errors when both sticks are in, but when I put one at a time I get none.

Any advice or tips?
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 950 Gigabyte G1 Guerrilla Rev. 1.0 ASUS R6950 2Gb x2 G.Skill Trident 2Ghz 3x2Gb 
Hard DriveOptical DriveOSMonitor
Intel X25-V 40gb SSD, WD Black 1TB SATA rev. 3 ASUS DVDRW Win7 64 Acer X193W+ 19" 1680x1050 (upgrading soon) 
KeyboardPowerCaseMouse
Logitech Corsair AX850 Antec 1200 w/Window Razer Naga Molten 
Mouse Pad
Classic 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 950 Gigabyte G1 Guerrilla Rev. 1.0 ASUS R6950 2Gb x2 G.Skill Trident 2Ghz 3x2Gb 
Hard DriveOptical DriveOSMonitor
Intel X25-V 40gb SSD, WD Black 1TB SATA rev. 3 ASUS DVDRW Win7 64 Acer X193W+ 19" 1680x1050 (upgrading soon) 
KeyboardPowerCaseMouse
Logitech Corsair AX850 Antec 1200 w/Window Razer Naga Molten 
Mouse Pad
Classic 
  hide details  
Reply
post #2 of 2
Thread Starter 
One thing to note is I did test with my ram at Intel default settings for my OC and things were fine. Once I had a good idea of stability I upped the ram to rated settings. I just noticed that it was using 1T and I entered 2T now to do the stock with rated mem settings for blend. I need to see on the sticks themselves whether they say 1T or 2T. But the main thing is I need some feed back on the IMC voltage. Once I am sure I have enough QPI voltage I myself will be able to determine whether I have faulty sticks. I'm just not sure what on average people give their chips with certain OC and ram settings.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 950 Gigabyte G1 Guerrilla Rev. 1.0 ASUS R6950 2Gb x2 G.Skill Trident 2Ghz 3x2Gb 
Hard DriveOptical DriveOSMonitor
Intel X25-V 40gb SSD, WD Black 1TB SATA rev. 3 ASUS DVDRW Win7 64 Acer X193W+ 19" 1680x1050 (upgrading soon) 
KeyboardPowerCaseMouse
Logitech Corsair AX850 Antec 1200 w/Window Razer Naga Molten 
Mouse Pad
Classic 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 950 Gigabyte G1 Guerrilla Rev. 1.0 ASUS R6950 2Gb x2 G.Skill Trident 2Ghz 3x2Gb 
Hard DriveOptical DriveOSMonitor
Intel X25-V 40gb SSD, WD Black 1TB SATA rev. 3 ASUS DVDRW Win7 64 Acer X193W+ 19" 1680x1050 (upgrading soon) 
KeyboardPowerCaseMouse
Logitech Corsair AX850 Antec 1200 w/Window Razer Naga Molten 
Mouse Pad
Classic 
  hide details  
Reply
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