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Get new RAM to run at optimum speed - 1333 to new 1866Mhz

Tags:
  • DDR3
  • RAM
  • BIOS
  • Corsair
  • Memory
  • Speed
Last response: in Memory
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September 9, 2014 8:03:20 AM

Hi All,

Just just purchased some Corsair Vengeance DDR3 2x8GB 1866Mhz modules (CMY16GX3M2A1866C9B) for my GA-990XA-UD3 Mobo (AMD FX-6100 processor). I did have 2x4GB 1333Mhz chips and wanted more RAM to start virtual machines so thought I would upgrade the speed too!

However every time I go into the BIOS and change the RAM timing from x6.66 - 1333 to x9.33 - 1866 it doesn't boot and the BIOS informs me that its switching back to 1333. I upgraded the BIOS from F10 to F13 and its still the same.

1. Is it worth upgrading to the beta firmware F14b do you think?
2. Is it possible to get the RAM running at 1866Mhz, do I need to set the other timings/voltages below the speed settings and if so which ones? The RAM says 1866 - 9 - 10 - 9 - 27 and even though I know these are certain timing settings I'm not sure which ones to set in BIOS.
Thanks

More about : ram run optimum speed 1333 1866mhz

a b } Memory
September 9, 2014 8:15:08 AM

Have you tried activating an XMP profile ? That should do the overclocking process for itself.
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Best solution

September 9, 2014 8:25:15 AM

Set your FSB on manual and put it on default speed (usually it's 200MHz).
Set HT speed on manual and put it on its default speed (usually 2000MHz)
Set the multiplier on manual and put it to its default value, or lower.
Set the RAM voltage to manual and put it on stock value (usually 1.5V)
Set the timings on manual, and set it exactly as designed (which is the 9 - 10 - 9 - 27 you provided)
Set your memory speed on manual and set it to 1333.

If system boots normally, set the RAM to 1600. Keep the timing FSB and multiplier the same. See what happens.
If all is still normal, repeat same as above, but with 1866. If the prior ones worked, this one should work. You can put the multiplier on auto again, but I wouldn't touch the rest again. Unless you want to overclock other things.

And btw, the difference between 1333 and 1866 is actually negligible.

http://www.youtube.com/watch?v=dWgzA2C61z4
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a c 2285 } Memory
September 9, 2014 9:04:59 AM

BIOS update might help, on your mobo though, look for one of the settings DOCP, EOCP or XMP for DRAM overclock profiles, enable it and set to 1866 - if still problems may need to raise the DRAM and/or CPU/NB voltage (it feeds your MC (memory controller))
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September 9, 2014 12:18:25 PM

Thanks for all the advice, apparently the profile mention are only for intel processors not AMD one, I did find a post http://www.tomshardware.co.uk/forum/272304-29-what-chan... with timings but it didn't work and I had to reset the CMOS, if I could find the right setting I would probably change it up but after watching NightAntilli's link for the time being I think I'll stick with 1333!! Wish I had watched the video before buying!! Thanks all
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a c 2285 } Memory
September 9, 2014 12:35:31 PM

The DOCP and EOCP are AMD profile approaches, and many of the mobos now support XMP standards. Think your mobo has DOCP
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September 9, 2014 1:39:49 PM

I'll have another look thanks for the heads up
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