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Why can't i run 6GB of ram?

post #1 of 9
Thread Starter 
In my sig rig i have 4gb (2x2gb) 1600 G.Skill RAM. I just got some 2gb (2x1gb) Crucial PC3-10600u RAM from a friend... when i put it into my PC it says 6GB 3 GB Usable? When i have only the 4gigs in it works fine using 4...

Yes, I have 64bit Windows 7 Ult.
    
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Core i7 5930k MSI X99S SLI GTX 1080 32GB Crucial DDR4 
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(3x) Crucial 256GB (768gb RAID0) WD 3TB EK Supremacy EVO + D5 Vario GT-AP15 
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2X HWLABS GTX360 (2x) 1440p QHD PLS MicroBoard 40" 4k MVA Corsair K70 RGB 
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post #2 of 9
prolly running into a compatibility issue, thats all i know of well aside from being dead but don't think there dead tho.
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post #3 of 9
Thread Starter 
No they work fine in another PC running by themselves. So they arnt dead, but how can i fix it?
    
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(3x) Crucial 256GB (768gb RAID0) WD 3TB EK Supremacy EVO + D5 Vario GT-AP15 
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CPUMotherboardGraphicsRAM
Core i7 5930k MSI X99S SLI GTX 1080 32GB Crucial DDR4 
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(3x) Crucial 256GB (768gb RAID0) WD 3TB EK Supremacy EVO + D5 Vario GT-AP15 
CoolingMonitorMonitorKeyboard
2X HWLABS GTX360 (2x) 1440p QHD PLS MicroBoard 40" 4k MVA Corsair K70 RGB 
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post #4 of 9
Yeah i'd say thats a compatibility issue there dude, mixing different makes of ram is never a great idea i'm afraid.
Try lowering the speed of the ram, that might kick it into life.
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post #5 of 9
Thread Starter 
:/ i tried dissabling all my overclocks and no luck.
    
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CPUMotherboardGraphicsRAM
Core i7 5930k MSI X99S SLI GTX 1080 32GB Crucial DDR4 
Hard DriveHard DriveCoolingCooling
(3x) Crucial 256GB (768gb RAID0) WD 3TB EK Supremacy EVO + D5 Vario GT-AP15 
CoolingMonitorMonitorKeyboard
2X HWLABS GTX360 (2x) 1440p QHD PLS MicroBoard 40" 4k MVA Corsair K70 RGB 
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post #6 of 9
Maybe a ram slot or ram module is not working. Common issue.
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post #7 of 9
Thread Starter 
Quote:
Originally Posted by BradleyW View Post
Maybe a ram slot or ram module is not working. Common issue.
Well, tried the ram in another PC, and tried that PC's ram in my PC. all 8 gigs worked when i did it that way, and the 2gb worked in the other PC. So all slots and modules work.
Also when i ran 2x2gb sticks and 1 of the 1gb sticks, It said 5 out of 5 gigs usable. (Yes i know that's only single channel then..)
    
CPUMotherboardGraphicsRAM
Core i7 5930k MSI X99S SLI GTX 1080 32GB Crucial DDR4 
Hard DriveHard DriveCoolingCooling
(3x) Crucial 256GB (768gb RAID0) WD 3TB EK Supremacy EVO + D5 Vario GT-AP15 
CoolingMonitorMonitorKeyboard
2X HWLABS GTX360 (2x) 1440p QHD PLS MicroBoard 40" 4k MVA Corsair K70 RGB 
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Corsair RM1000 Custom Build Logitech G900 Yamaha RX-V465 + 5.1 Surround 
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CPUMotherboardGraphicsRAM
Core i7 5930k MSI X99S SLI GTX 1080 32GB Crucial DDR4 
Hard DriveHard DriveCoolingCooling
(3x) Crucial 256GB (768gb RAID0) WD 3TB EK Supremacy EVO + D5 Vario GT-AP15 
CoolingMonitorMonitorKeyboard
2X HWLABS GTX360 (2x) 1440p QHD PLS MicroBoard 40" 4k MVA Corsair K70 RGB 
PowerCaseMouseAudio
Corsair RM1000 Custom Build Logitech G900 Yamaha RX-V465 + 5.1 Surround 
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post #8 of 9
There may be a setting in your motherboard that causes this. Im not sure exactly what it is called but some motherboards have a setting that lets you do something with your extra ram if you have more than 4 gigs on a 32 bit OS. Check for something like this.
    
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post #9 of 9
Thread Starter 
Figgured it out. Set the dram speed to auto now it all shows up.
    
CPUMotherboardGraphicsRAM
Core i7 5930k MSI X99S SLI GTX 1080 32GB Crucial DDR4 
Hard DriveHard DriveCoolingCooling
(3x) Crucial 256GB (768gb RAID0) WD 3TB EK Supremacy EVO + D5 Vario GT-AP15 
CoolingMonitorMonitorKeyboard
2X HWLABS GTX360 (2x) 1440p QHD PLS MicroBoard 40" 4k MVA Corsair K70 RGB 
PowerCaseMouseAudio
Corsair RM1000 Custom Build Logitech G900 Yamaha RX-V465 + 5.1 Surround 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
Core i7 5930k MSI X99S SLI GTX 1080 32GB Crucial DDR4 
Hard DriveHard DriveCoolingCooling
(3x) Crucial 256GB (768gb RAID0) WD 3TB EK Supremacy EVO + D5 Vario GT-AP15 
CoolingMonitorMonitorKeyboard
2X HWLABS GTX360 (2x) 1440p QHD PLS MicroBoard 40" 4k MVA Corsair K70 RGB 
PowerCaseMouseAudio
Corsair RM1000 Custom Build Logitech G900 Yamaha RX-V465 + 5.1 Surround 
  hide details  
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