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2000MHz memory in 1866MHz slots.

post #1 of 7
Thread Starter 
Hey all, i just bought this memory: Corsair Dominator GT 2x2Gb 2000MHz. my board only supports 1866MHz, but i thought that it could just downclock itself and i could use it anyway, but now when i have installed it the system wont boot. is this simply not possible?

-Ridick2602
Haf932
(13 items)
 
  
CPUMotherboardGraphicsRAM
E8400 @ 4.46 @ 1.4 [Lapped] ASUS P5E64/WS/EVOLUTION GeForce GTX 670 2x2048 MB DDR3 2000 MHz Dominator-GT @ 1631MHz 
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WD Caviar 250GB Microsoft Windows 7 Ultimate Logitech G15 Refresh - Gaming Keyboard Corsair CMPSU-750TXEU 750W 
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Haf932
(13 items)
 
  
CPUMotherboardGraphicsRAM
E8400 @ 4.46 @ 1.4 [Lapped] ASUS P5E64/WS/EVOLUTION GeForce GTX 670 2x2048 MB DDR3 2000 MHz Dominator-GT @ 1631MHz 
Hard DriveOSKeyboardPower
WD Caviar 250GB Microsoft Windows 7 Ultimate Logitech G15 Refresh - Gaming Keyboard Corsair CMPSU-750TXEU 750W 
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Cooler Master HAF 932 Microsoft SideWinder X8 QPAD CT GRIN Limited Edition 
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post #2 of 7
your board/bios settings tell the memory what speed to run at, the memory does not have it's own clock gen.

try a cmos clear.
post #3 of 7
Clearing CMOS will do nothing in my opinion, the only way you could underclock it would be if you could actually boot, then change it via bios. But, actually, you can try setting the frequency really low (without having on the 2000 module) then plug in the module, and see if it works.
Current System
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Current System
(18 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX-8350 @ 4GHz Gigabyte 990XA-UD3 AMD Radeon R9 380X Kingston 
Hard DriveHard DriveOptical DriveCooling
Samsung 840 Pro EVO Seagate 500GB LG DVD Burner 3x Coolermaster 80mm + 2 Thermaltake 200mm 
OSMonitorMonitorKeyboard
Windows 10 x64 LG TV LG Flatron W2361V Logitech K200 
PowerCaseMouseMouse Pad
Enermax Galaxy 850W Thermaltake Element S Logitech G502 Proteus Spectrum RGB Steelseries QcK 
AudioAudio
Realtec HDA Lexicon Omega 
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post #4 of 7
Quote:
Originally Posted by AngeloG. View Post
Clearing CMOS will do nothing in my opinion, the only way you could underclock it would be if you could actually boot, then change it via bios. But, actually, you can try setting the frequency really low (without having on the 2000 module) then plug in the module, and see if it works.
clearing cmos would reset the memory speed to the default for the chipset which is almost always lower than what the memory is rated for. memory does not automatically try to run at it's rated speeds when you install it, you must set it to run at those speeds.
post #5 of 7
Now that I look again, it seems the OP has overclocked the CPU, I guess through FSB, so the RAM are overclocked by that. If he upgraded to rated 2000 RAM modules, it means that his previous RAM did not run any higher than 1850. Which means, that when he replaced them with 2000 rated, they would not run past 1850 by themselves. Makes sense?
Current System
(18 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX-8350 @ 4GHz Gigabyte 990XA-UD3 AMD Radeon R9 380X Kingston 
Hard DriveHard DriveOptical DriveCooling
Samsung 840 Pro EVO Seagate 500GB LG DVD Burner 3x Coolermaster 80mm + 2 Thermaltake 200mm 
OSMonitorMonitorKeyboard
Windows 10 x64 LG TV LG Flatron W2361V Logitech K200 
PowerCaseMouseMouse Pad
Enermax Galaxy 850W Thermaltake Element S Logitech G502 Proteus Spectrum RGB Steelseries QcK 
AudioAudio
Realtec HDA Lexicon Omega 
  hide details  
Reply
Current System
(18 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX-8350 @ 4GHz Gigabyte 990XA-UD3 AMD Radeon R9 380X Kingston 
Hard DriveHard DriveOptical DriveCooling
Samsung 840 Pro EVO Seagate 500GB LG DVD Burner 3x Coolermaster 80mm + 2 Thermaltake 200mm 
OSMonitorMonitorKeyboard
Windows 10 x64 LG TV LG Flatron W2361V Logitech K200 
PowerCaseMouseMouse Pad
Enermax Galaxy 850W Thermaltake Element S Logitech G502 Proteus Spectrum RGB Steelseries QcK 
AudioAudio
Realtec HDA Lexicon Omega 
  hide details  
Reply
post #6 of 7
Thread Starter 
Thanks, but i found that one of the slots on the mobo was defect, and everytime i installed a module the system would not boot. now im using a2 and b2 instead of a1 and b1, and now it works
Haf932
(13 items)
 
  
CPUMotherboardGraphicsRAM
E8400 @ 4.46 @ 1.4 [Lapped] ASUS P5E64/WS/EVOLUTION GeForce GTX 670 2x2048 MB DDR3 2000 MHz Dominator-GT @ 1631MHz 
Hard DriveOSKeyboardPower
WD Caviar 250GB Microsoft Windows 7 Ultimate Logitech G15 Refresh - Gaming Keyboard Corsair CMPSU-750TXEU 750W 
CaseMouseMouse Pad
Cooler Master HAF 932 Microsoft SideWinder X8 QPAD CT GRIN Limited Edition 
  hide details  
Reply
Haf932
(13 items)
 
  
CPUMotherboardGraphicsRAM
E8400 @ 4.46 @ 1.4 [Lapped] ASUS P5E64/WS/EVOLUTION GeForce GTX 670 2x2048 MB DDR3 2000 MHz Dominator-GT @ 1631MHz 
Hard DriveOSKeyboardPower
WD Caviar 250GB Microsoft Windows 7 Ultimate Logitech G15 Refresh - Gaming Keyboard Corsair CMPSU-750TXEU 750W 
CaseMouseMouse Pad
Cooler Master HAF 932 Microsoft SideWinder X8 QPAD CT GRIN Limited Edition 
  hide details  
Reply
post #7 of 7
Good to know. Enjoy.
Current System
(18 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX-8350 @ 4GHz Gigabyte 990XA-UD3 AMD Radeon R9 380X Kingston 
Hard DriveHard DriveOptical DriveCooling
Samsung 840 Pro EVO Seagate 500GB LG DVD Burner 3x Coolermaster 80mm + 2 Thermaltake 200mm 
OSMonitorMonitorKeyboard
Windows 10 x64 LG TV LG Flatron W2361V Logitech K200 
PowerCaseMouseMouse Pad
Enermax Galaxy 850W Thermaltake Element S Logitech G502 Proteus Spectrum RGB Steelseries QcK 
AudioAudio
Realtec HDA Lexicon Omega 
  hide details  
Reply
Current System
(18 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX-8350 @ 4GHz Gigabyte 990XA-UD3 AMD Radeon R9 380X Kingston 
Hard DriveHard DriveOptical DriveCooling
Samsung 840 Pro EVO Seagate 500GB LG DVD Burner 3x Coolermaster 80mm + 2 Thermaltake 200mm 
OSMonitorMonitorKeyboard
Windows 10 x64 LG TV LG Flatron W2361V Logitech K200 
PowerCaseMouseMouse Pad
Enermax Galaxy 850W Thermaltake Element S Logitech G502 Proteus Spectrum RGB Steelseries QcK 
AudioAudio
Realtec HDA Lexicon Omega 
  hide details  
Reply
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