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Windows 7: Asus Sabertooth x58 board only posts 8gb instead of 12gb

08 Aug 2017   #1

Windows 7 Ultimate x64
Asus Sabertooth x58 board only posts 8gb instead of 12gb

This problem is driving me insane.

Asus Sabertooth x58 board
i7 960 3.20ghz
3x 4gb Corsair Vengence 1600mhz

Tried in triple channel mode and bios posts 4gb, fit Ram in slot A1,A2 + B1 bios posts 8gb, tried changing settings in Ai Tweaker and makes no difference. Any help to save my sanity would be much appreciated

My System SpecsSystem Spec
08 Aug 2017   #2
Mellon Head

Win 7 Pro x64/Win 10 Pro x64 dual boot

Have you tested each RAM stick individually to see if you can boot from it? Maybe you have a bad stick.
My System SpecsSystem Spec
09 Aug 2017   #3

Windows 7 Ultimate x64

Yup tried single stick they all post 4gb no problem, also tried removing cpu and reseating it with fresh compound. Also tried loosing heatsink as it was overly tight.
My System SpecsSystem Spec

09 Aug 2017   #4

Windows 10 64 bit

Try one module in each memory slot and see what happens. I had a (new) ASRock Z77 motherboard and it had a bad memory slot (confirmed by ASRock Tech). It obviously was returned as defective.

A BIOS (CMOS) Reset may help if each slot tests good.
My System SpecsSystem Spec

 Asus Sabertooth x58 board only posts 8gb instead of 12gb

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