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Overclocking Memory/ RAM

post #1 of 3
Thread Starter 
So i have the Gigabyte motherboard : GA-MA790XT-UD4P

with a AMD Phenom II X4 965 Processor WATERCOOLED

650w PSU

4x 2GB Kingston Hyper X Blu DDR3 - 1600

Description of ram:

This document describes Kingston's 256M x 64-bit (2GB)
DDR3-1600 CL9 SDRAM (Synchronous DRAM), 1Rx8 memory
module, based on eight 256M x 8-bit FBGA components. This
module has been tested to run at DDR3-1600 at a low latency
timing of 9-9-9 at 1.65V.The SPD is programmed to JEDEC
standard latency DDR3-1333 timing of 9-9-9. This 240-pin
DIMM uses gold contact fingers. The JEDEC electrical and
mechanical specifications are as follows:

Spec Sheet : http://www.kingston.com/datasheets/KHX1600C9AD3B1_2G.pdf

Basically i was having random BSOD's tried 100's of things which included resetting BIOS, Updating BIOS, Reinstalling OS, Memtesting each stick/ SLot

It turned out i was getting errors on memtest at 1600mhz speed with RAM in all together

So when i set my BIOS to default the Memory would go back to 1333mhz and run fine without errors.

I read somewhere it might need a voltage bump for stability?

A bit confused how to do that as my BIOS is abit different to youtube videos there is no where i can change the voltage of the ram to say like 1.5, 1.55, 1.60

theirs only numbers like.

+ 0.125
+ 0.150
post #2 of 3
what the voltage is telling you is that it will add +0.125v to the current setting of the voltage (for mine, it adds 0.02v per notch). Default off the top of my head is 1.5v. So, for mine, the next notch higher would be 1.52v then.

as for random BSOD... what is your memory divider set to? My x3 would NEVER run anything on the 8x mem divider. If i wanted to get faster, i would have to set it to the 6.66 divider and up the FSB to get my memory speed higher.

Heck, even the thuban i have now.. i have the same problem where it won't even post if i use the 8x mem divider.
my baby
(14 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II X6 1090T 3.888 | 2.916 NB  Gigabyte GA-890FXA-UD5 Powercolor Myst 7870xt Viper Xtreme Division II 1620 @ 8-9-8-22 
Hard DriveOptical DriveCoolingOS
640GB WD Black (others as storage) LG WH08LS20 BDR Burner Hyper212+ in push pull config Windows 7 Pro 64bit 
MonitorKeyboardPowerCase
HP W2207h (i know i know..) Cordless Desktop Pro (Natural Keyboard) Corsair 620HX Cooler Master HAF 932 
MouseMouse Pad
Logitech MX518 Generic Gel with Wrist pad 
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my baby
(14 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II X6 1090T 3.888 | 2.916 NB  Gigabyte GA-890FXA-UD5 Powercolor Myst 7870xt Viper Xtreme Division II 1620 @ 8-9-8-22 
Hard DriveOptical DriveCoolingOS
640GB WD Black (others as storage) LG WH08LS20 BDR Burner Hyper212+ in push pull config Windows 7 Pro 64bit 
MonitorKeyboardPowerCase
HP W2207h (i know i know..) Cordless Desktop Pro (Natural Keyboard) Corsair 620HX Cooler Master HAF 932 
MouseMouse Pad
Logitech MX518 Generic Gel with Wrist pad 
  hide details  
Reply
post #3 of 3

I'm a former owner. The DRAM voltages on this board actually start at 1.6V. You need +0.05V to get your rated 1.65V.  When you have the x8 mem divider set, check your secondary timings such as tRFC.  Auto might set them to something too low to be stable.  Before I had my x6 I ran a black edition 965 and the x8 memory divider on my RAM with no issues.  Running 1600Mhz may require a CPU-NB voltage boost esp. with the 4 DIMMs present.

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