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Question about RAM and motherboards...

post #1 of 3
Thread Starter 
I have a general question about an issue I had but did resolve with my RAM. As some know, I am running an ASUS M5A99X EVO motherboard and using GSkill Sniper Series 2133 MHz RAM with it.

The other day I booted into Windows and opened CCleaner to do a routine maintenance cleaning. At the top of CCleaner it posts general information, the CPU you're running and how much system RAM. I have 8 GB installed, however CCleaner was telling me there was 4 GB.

Windows also only recognized 4 GB and when I rebooted into BIOS, it too recognized only 4. It was heart racing time. First thing I did was check each stick of RAM in each slot on the motherboard to verify that each stick / slot was good, and indeed everything checked out. I reseated both sticks and booted back into BIOS, to still find out it was only recognizing 4 GB.

At this point I decided to shut down, unplug, and clear CMOS. Bingo. Once I booted back into BIOS, there was my 8 GB. I then proceeded to load my overclocking profile in BIOS, rebooted and prayed, and sure enough, it was back to seeing 8GB.

My question here is, and I understand the answer may not be a "general" one, but I am trying to learn as much as I can, why does this happen? I also realize there may be multiple possibilities for it, I did do some searching here on the forum but found nothing as to the "why". I found a lot of remedies, which was nice, but again no "why".

I am curious, sometimes this is good, sometimes this is bad (curiosity that is); I feel it may have had something to do with the overclock considering this has never happened before and I have never overclocked to this extent before, that being said, if there is something I should be aware of before I go and ruin either a slot or a stick of RAM, I would definitely like to be informed of it.

Thank you in advance for any answers to this, much appreciated!
Edited by ThisMaySting - 9/11/12 at 3:02pm
Abacus
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Abacus
(29 items)
 
  
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OCZ Vertex 4 256 EKWB Supremacy Evo CPU Block Bitspower G1/4 Matte Black Dual Rotary 60-Degre... Bitspower G1/4 Matte Black Dual Rotary 45-Degre... 
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EK-AF Ball Valve (10mm) G1/4 - Matte Black (x2) PrimoFlex Advanced LRT Tubing - 7/16in. ID X 5/... Monsoon Free Center Compression Fittings, 7/16"... Corsair Air Series SP120 Performance Edition Hi... 
CoolingCoolingCoolingCooling
Aquacomputer Aqualis D5 150ml Reservoir Alphacool Nexxxos Monsta 240mm Radiator (x2) Alphacool Nexxxos Monsta 480mm Radiator EK-FC970 GTX ACX - Acetal+Nickel (x2) 
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post #2 of 3
It could happen because of many reasons. Poor seating of the memory in the slots, improper CPU install (memory controller is on the CPU) although this happens more on Intel because of LGA where AMD uses PGA it is much less common, improper settings (most RAM settings like frequency, voltage, timings can throw things off) or even improper CPU-NB voltage.
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Beast
(14 items)
 
Dell XPS Faptop
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Alura :)
(11 items)
 
CPUMotherboardGraphicsRAM
i7 4790k Asus Z97 Pro WIFI-AC Sapphire Nitro Radeon R9 Fury Tri-X OC+  G.Skill 4 x 8GB F3-2133C9D-16GXH 
Hard DriveOptical DriveCoolingOS
2 x Intel 730 480GB SSD in RAID 0 Asus DRW-24B1ST/BLK/B/AS Noctua NH-D15 Winblows 10 Pro x64 
MonitorKeyboardPowerCase
Pixio PX277 Logitech G510 Seasonic SS-660XP2 Fractal Design R4 Blackout 
MouseMouse Pad
Logitech G500 Xtrac Ripper 
CPUMotherboardGraphicsRAM
Core 2 Duo T5250 @ 1.5ghz Dell 0N6705 Mobile Intel 965 Express 2 x 2GB Hyundai/Kingston DDR2 533mhz 
Hard DriveOptical DriveOSMonitor
OCZ Summit 60GB SSD Slot Load DVD-RW Windows 7 Ultimate x64 13.3 inch 1280x800 
CPUMotherboardGraphicsRAM
i5 2500k Asus P8Z68-V Pro MSI R7970 Lightning BE 2 x 4GB G.Skill Ripjaws 2133mhz 
Hard DriveOptical DriveCoolingOS
Mushkin Enhanced Chronos 240GB and WD Black 1TB Asus DRW-24B1ST Cooler Master Hyper 212 EVO Windows 7 Ultimate x64 
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Hannspree 24 inch Thermaltake Tough Power TP-750P 750W Gold Cooler Master HAF 932 
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post #3 of 3
Thread Starter 
I appreciate the reply, thank you. In retrospect, I do believe it was the CPU-NB Voltage that was causing the issue. When I cleared CMOS and reapplied my OC profile, I had set the voltages back to automatic, keeping the frequency overclock of course.

When I had originally overclocked, I set the voltages manually and I feel I may have set them too low.

My biggest gripe with the automatic (voltage) settings was the CPU voltage. I am running a Phenom Black x4 Deneb and it's overclocked from 3.4 to 4.127 GHz and the "Auto" voltage is at 1.52V. I have never run a processor at such a high voltage before, and I was not a big fan of this. I tuned it down to the next increment lower (1.49***) but when running both OCCT and Prime I would get BSOD after 3 minutes or so. At 1.52*** this would not happen after hours of running an OCCT test.

With that being said, when I was concerned about the CPU voltage being so high at Auto, I was also concerned about all other voltages being too high at Auto, so I lowered them by one increment as well, this was after setting the CPU back to Auto (1.52***).

Now that I have read your post, I am pretty sure that the culprit was manually lowering the CPU-NB voltage (which is now back to Auto), so thank you for the response and helping me to understand this more clearly!
Abacus
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Intel I7-5820K Gigabyte X99P SLI EVGA GeForce GTX 970 FTW GAMING ACX 2.0 G.SKILL Ripjaws 4 Series 
Hard DriveCoolingCoolingCooling
OCZ Vertex 4 256 EKWB Supremacy Evo CPU Block Bitspower G1/4 Matte Black Dual Rotary 60-Degre... Bitspower G1/4 Matte Black Dual Rotary 45-Degre... 
CoolingCoolingCoolingCooling
EK-AF Ball Valve (10mm) G1/4 - Matte Black (x2) PrimoFlex Advanced LRT Tubing - 7/16in. ID X 5/... Monsoon Free Center Compression Fittings, 7/16"... Corsair Air Series SP120 Performance Edition Hi... 
CoolingCoolingCoolingCooling
Aquacomputer Aqualis D5 150ml Reservoir Alphacool Nexxxos Monsta 240mm Radiator (x2) Alphacool Nexxxos Monsta 480mm Radiator EK-FC970 GTX ACX - Acetal+Nickel (x2) 
CoolingOSMonitorKeyboard
EK-FC970 GTX ACX Backplate - Black (x2) Windows 7 Ultimate Sanyo 40" 1080P TV G.Skill RIPJAWS KM780 MX RGB 
PowerCaseMouseMouse Pad
EVGA SuperNOVA 1000 PS (Platinum) Cooler Master CM Storm Trooper Razer Naga Chroma Razer Goliathus Control Large 
AudioAudioAudioAudio
Yamaha RX-V1800 7.1 Receiver Klipsch KG-4 Floor Standing (front) Klipsch KV-3 Center Channel Klipsch KSF 10.5 Floor Standing (rear) 
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Logisys True-Color CCFL Light Bar - 12" - White... 
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Abacus
(29 items)
 
  
CPUMotherboardGraphicsRAM
Intel I7-5820K Gigabyte X99P SLI EVGA GeForce GTX 970 FTW GAMING ACX 2.0 G.SKILL Ripjaws 4 Series 
Hard DriveCoolingCoolingCooling
OCZ Vertex 4 256 EKWB Supremacy Evo CPU Block Bitspower G1/4 Matte Black Dual Rotary 60-Degre... Bitspower G1/4 Matte Black Dual Rotary 45-Degre... 
CoolingCoolingCoolingCooling
EK-AF Ball Valve (10mm) G1/4 - Matte Black (x2) PrimoFlex Advanced LRT Tubing - 7/16in. ID X 5/... Monsoon Free Center Compression Fittings, 7/16"... Corsair Air Series SP120 Performance Edition Hi... 
CoolingCoolingCoolingCooling
Aquacomputer Aqualis D5 150ml Reservoir Alphacool Nexxxos Monsta 240mm Radiator (x2) Alphacool Nexxxos Monsta 480mm Radiator EK-FC970 GTX ACX - Acetal+Nickel (x2) 
CoolingOSMonitorKeyboard
EK-FC970 GTX ACX Backplate - Black (x2) Windows 7 Ultimate Sanyo 40" 1080P TV G.Skill RIPJAWS KM780 MX RGB 
PowerCaseMouseMouse Pad
EVGA SuperNOVA 1000 PS (Platinum) Cooler Master CM Storm Trooper Razer Naga Chroma Razer Goliathus Control Large 
AudioAudioAudioAudio
Yamaha RX-V1800 7.1 Receiver Klipsch KG-4 Floor Standing (front) Klipsch KV-3 Center Channel Klipsch KSF 10.5 Floor Standing (rear) 
Other
Logisys True-Color CCFL Light Bar - 12" - White... 
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Reply
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