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After CPU upgrade, RAM only works in Single Channel mode

post #1 of 9
Thread Starter 
I was running a perfectly stable FX-4300 on an Asrock 990FX Extreme3 in dual channel mode @1866.
After I upgraded to an FX-6300, it just refuses to run in Dual Channel mode, regardless if I put the sticks in slots 2,4 or 1,3.
It is driving me freaking nuts.

Both sticks had been memtested and were working great.
Latest version of BIOS/EFI.

Thanks guys!
post #2 of 9
try Memory mapping or "unganged" mode
Edited by Sunshine323 - 5/2/13 at 6:48pm
post #3 of 9
Thread Starter 
Did not, but 1 & 2 are the same bank A, while 3 & 4 are another. It wouldn't work in dual channel mode otherwise (as per mobo's manual)
So better yet, I tested A1 + B1 and A2 + B2. And it was working fine before the CPU upgrade.
post #4 of 9
Hi. Did you perform a Clear CMOS at stock, before the upgrade?
   
Frappenstein
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Frappenstein
(12 items)
 
CPUMotherboardGraphicsRAM
Phenom ii x4 965 BE GA-MA-790FXT-UD5P Sapphire R9 290 Tri-x OC Kingston Value RAM 
RAMHard DriveHard DriveOptical Drive
Kingston Value RAM Seagate Barracuda (Died) WD Caviar Black Sony DVD/RW 
Optical DriveCoolingOSMonitor
Sony DVD/RW Xigmatec Aegir SD128264 Win 7 Home Premium 64 bit LG 2443T 
PowerCase
ThermalTake Toughpower 800 (Non modular) ThermalTake Eureka 
CPUMotherboardGraphicsRAM
Pentium 4 1.7Ghz Northwood Gigabyte GA-8ITX Creative GeForce3 Ti 500 Some generic Samsung 512Mb 
Hard DriveOptical DriveCoolingOS
Hitachi 80 Gb Plextor CD-DVD RW  What was that again? Windows 98 SE  
MonitorKeyboardPowerCase
15'' CRT Broken Yes,it has. Fridge 
MouseMouse PadAudio
In the lab for exeriments  To disect the mouse Audigy 3 
CPUMotherboardGraphicsRAM
5930k ASUS Rampage V Extreme Sapphire R9 290 Ripjaws V 2400MHz  
Hard DriveHard DriveCoolingOS
Intel 750 Series 400GB WD Caviar Black 1 Tb H-100i Win 7 64 bit Ultimate 
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Super Flower 1600W Platinum Coolermaster Cosmos2 
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post #5 of 9
Reminds me of the time when I increased my memory clock past 1800+MHz and my memory wouldn't work in Dual Channel
The Ancient
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The Ancient
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FZ-G1
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Phenom X6 1055T 3.9GHz NB 3.0GHz ASUS Crosshair V  GTX 770 8GB G.Skill TridentX 1652MHz CL7-7-8-20-22 1T 
Hard DriveOptical DriveCoolingOS
OCZ 60GB Vertex 2E - 3x HDD's Samsung Blu-Ray Drive Custom W/C Loop Windows 7 64bit 
PowerCase
Superflower Leadex 650W Coolermaster Storm Scout Mod 
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post #6 of 9
Check the CPU install, make sure it is clear of any dust particles or bent pins. If you have an aftermarket CPU cooler, make sure it is not too tight or too loose. One more thing to check is for shortages. Any metal material should not be in contact between the motherboard and computer case.

If all these check out fine, the motherboard may be defective. Did you neutralize yourself from any static charge prior to installation?

Cheers
post #7 of 9
Thread Starter 
It turned out that that a couple of pins were shorted by a tiny, almost invisible, line of thermal paste. All good now.
post #8 of 9
Quote:
Originally Posted by danct View Post

It turned out that that a couple of pins were shorted by a tiny, almost invisible, line of thermal paste. All good now.

thumb.gif So it's all working fine? Dual Channel and everything?
The Ancient
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FZ-G1
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CPUMotherboardGraphicsRAM
Phenom X6 1055T 3.9GHz NB 3.0GHz ASUS Crosshair V  GTX 770 8GB G.Skill TridentX 1652MHz CL7-7-8-20-22 1T 
Hard DriveOptical DriveCoolingOS
OCZ 60GB Vertex 2E - 3x HDD's Samsung Blu-Ray Drive Custom W/C Loop Windows 7 64bit 
PowerCase
Superflower Leadex 650W Coolermaster Storm Scout Mod 
CPUGraphicsRAMHard Drive
Core i5-3437U Intel HD4000 8GB 256GB SSD 
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Windows 8 Pro 10.1 WUXGA Touchscreen Worlds Durable Tablet 
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The Ancient
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FZ-G1
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CPUMotherboardGraphicsRAM
Phenom X6 1055T 3.9GHz NB 3.0GHz ASUS Crosshair V  GTX 770 8GB G.Skill TridentX 1652MHz CL7-7-8-20-22 1T 
Hard DriveOptical DriveCoolingOS
OCZ 60GB Vertex 2E - 3x HDD's Samsung Blu-Ray Drive Custom W/C Loop Windows 7 64bit 
PowerCase
Superflower Leadex 650W Coolermaster Storm Scout Mod 
CPUGraphicsRAMHard Drive
Core i5-3437U Intel HD4000 8GB 256GB SSD 
OSMonitorKeyboardCase
Windows 8 Pro 10.1 WUXGA Touchscreen Worlds Durable Tablet 
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post #9 of 9
bingooooo biggrin.gif
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