Corsair Dominator Platinum 2133C9 won't boot into Windows

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Champion
Jul 27, 2010
10,584
4
51,965
I have an older P55-Lynnfield system and decided to upgrade the RAM. My motherboard specs indicate that it can handle 16GB (2x8GB) DDR3 2133 RAM.
https://www.msi.com/Motherboard/P55GD80.html#hero-specification

After I installed two sticks of Corsair Dominator Platinum 9-11-11-31, everything seemed to work fine until booting into Windows 10 Pro 64-bit. I got the Windows logo, but then it kicked out into the re-boot sequence for a while then it froze on the Windows logo.

I used XMP to clock the RAM to 2133 (the bios indicated it was at 2124 MHz), and everything else at stock settings. I was able to get a good boot with removing XMP and running at 1333 MHz. I was also able to boot using the OC Genie button, which ran at 3.8 MHz on the CPU and 1800 MHz on the RAM.

My system w/Old RAM:
MSI P55 GD-80
Corsair Dominator 8GB (4x2GB) at 1600 MHz XMP 1.65V
SSD for Windows

New RAM:
Corsair Dominator Platinum 2133C9 16GB (2x8GB) 1.65V

So do I need to return the RAM and get the 1866 MHz versions, or is there a way I can get this sweet RAM to work at least above 2000 MHz?
 
Solution
Tradesman1
The Dominators are made with high density memory chips (as is basically all DRAM (DDR3) being made (since around 2010/2011), for the P55 chipset best to look at older sticks made with low density chips - the GSkill NT series of DDR3 value DRAM is still available - might look at NewEgg.com
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Tradesman1

Tradesman1

Legenda in Aeternum
Jun 5, 2013
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The Dominators are made with high density memory chips (as is basically all DRAM (DDR3) being made (since around 2010/2011), for the P55 chipset best to look at older sticks made with low density chips - the GSkill NT series of DDR3 value DRAM is still available - might look at NewEgg.com
 
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Solution
17seconds

17seconds

Champion
Jul 27, 2010
10,584
4
51,965
Thanks Tradesman!
I was kind of thinking the OS didn't like the RAM speed for whatever reason. The new sticks do work at lower speeds. My plan eventually is to return them for the 1866 MHz variety. I'm hoping to see if there is an alternative using these current 2133 MHz sticks before I pack it in for the lower speed. It seems like there's probably a BIOS setting that I'm missing.
 
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17seconds

17seconds

Champion
Jul 27, 2010
10,584
4
51,965
OK, I think I got it figured out. This wasn't readily apparent at first, but when I enabled XMP at 2133 MHz on the new RAM it forced the CPU up to 3.89 GHz. That was a tad too much for it to handle. The CPU frequency and the RAM frequency are interlocked, so I needed to manually adjust the frequencies to something that my CPU can handle.

I am still tweaking, but at this point I am running at 3.0 GHz on the CPU (i7-875K, 2.9 MHz stock) and 2000 MHz on the RAM, very stable. This is pretty much exactly what I wanted to see... CPU at or near stock (making full use of the power saving/Turbo Boost features) and 2000+ MHz on the RAM. So far so good.

By the way, this old system with a GTX 780 Ti is still rocking, currently maxing out Fallout 4 (High God Rays, rather than Ultra is the only concession).
 
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