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Motherboard RAM incompatibility?

post #1 of 9
Thread Starter 
Hi everyone, I joined in search for some answers and hopefully I came to the right place and can become an active asset to the forums. I recently purchased an entire pc rig at an NCIX warehouse sale, in the heat of the moment I purchased the g1 gygabyte assassin 2 http://www.newegg.ca/Product/Product.aspx?Item=N82E16813128533 for 200$ to use with the 3930k i order via the retail edge program for 180. When browsing the RAM I saw the the corsair dominator 12Gb triple channel http://www.amazon.com/Corsair-Dominator-Desktop-Memory-CMT12GX3M3A2000C9/dp/B0047IQ7OE for 75$ so I nabbed it before anyone could. When i got home i noticed that my motherboard doesn't support the 2000mhz that my RAM runs at. My understanding is the 2000mhz is an overclocked speed and that my RAM will default to a lower frequency? My main question is will my pc accept the RAM or am I stuck with it because all sales were final? Thanks in advance everyone for the help suggestions soon to come!
post #2 of 9
Quote:
Originally Posted by Arcangellos View Post

Hi everyone, I joined in search for some answers and hopefully I came to the right place and can become an active asset to the forums. I recently purchased an entire pc rig at an NCIX warehouse sale, in the heat of the moment I purchased the g1 gygabyte assassin 2 http://www.newegg.ca/Product/Product.aspx?Item=N82E16813128533 for 200$ to use with the 3930k i order via the retail edge program for 180. When browsing the RAM I saw the the corsair dominator 12Gb triple channel http://www.amazon.com/Corsair-Dominator-Desktop-Memory-CMT12GX3M3A2000C9/dp/B0047IQ7OE for 75$ so I nabbed it before anyone could. When i got home i noticed that my motherboard doesn't support the 2000mhz that my RAM runs at. My understanding is the 2000mhz is an overclocked speed and that my RAM will default to a lower frequency? My main question is will my pc accept the RAM or am I stuck with it because all sales were final? Thanks in advance everyone for the help suggestions soon to come!

No problem.

You could just run them in tri-channel and @ 1866MHz with the same stock timings. Use 1.6v for the sticks.

You might be able to do 2133MHz with the same timings with 1.65v.
    
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post #3 of 9
I don't know the answer to your question, but what I would do it install the RAM and see if it works. I think it will actually run at a slower speed.
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post #4 of 9
Thread Starter 
When you say run them at 1866mhz, I'd put them in and they would down clock to 1066mhz or whatever the value is, then using XMP boost them?
post #5 of 9
The rig should run fine with that memory at 2000mhz, & chances are good it would be fine at 2133mhz. I've never tried triple channel in an x79 rig, should work although 4 modules for quad channel would be ideal.
    
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post #6 of 9
1333MHz would be the stock setting until you set 1866MHz in the bios. Manually set the timings and voltage to 1.6v

If for some reason they aren't stable, up the dram voltage to 1.625v.

I also want to point out that a 3930k supports quad channel ram that gives you more bandwidth. But tri-channel and dual channel works too.
    
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post #7 of 9
Thread Starter 
Yea, they only had the tri-channel kit and for the price why not. Assuming i could find a single stick of the same RAM would i be able to run it in quad channel? Thanks for the help and advice by the way!
post #8 of 9
Quote:
Originally Posted by Arcangellos View Post

Yea, they only had the tri-channel kit and for the price why not. Assuming i could find a single stick of the same RAM would i be able to run it in quad channel? Thanks for the help and advice by the way!

Yeah, but it's best to get the same kind of stick of ram to match.

There is no harm running Tri anyways. Some people run dual channel with their 3930ks and they don't see a difference.
    
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post #9 of 9
Quote:
Originally Posted by MrTOOSHORT View Post

Yeah, but it's best to get the same kind of stick of ram to match.

There is no harm running Tri anyways. Some people run dual channel with their 3930ks and they don't see a difference.

This ^, you would be able to see the difference between dual, tri & quad channel in superpi scores, but other than cpu based benchmarks you would likely never notice any difference.
    
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