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Mixing G.Skill Ripjaws X 2x2GB CL7 1600Mhz with Kingston HyperX Predator 2x4GB CL9 1866Mhz

Tags:
  • Memory
  • G.SKILL
  • RAM
  • Kingston
Last response: in Memory
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August 20, 2014 9:59:34 AM

First of all, hello everybody! First post, although I've been following the forum since forever. :-)

I recently bought 2 sticks of 4GB Kingston RAM 1866Mhz CL9 1.6v to either replace or, if possible, combine with my current sticks of RAM, which are 2 sticks of 2GB G.Skill RAM 1600Mhz CL7 1.5v.

Yes, completely different sticks, I know, but I was still wondering whether they could work together. If I plug them all in, the computer won't boot, but both pairs work separately.

I went to the BIOS and took some photos of the settings for both sticks and tried to increase the 7-8-7-... values to match the highest of both RAMs (not sure if this is how you do it). Also, I set the frequency at 1600Mhz and the voltage to about 1.652v. Still didn't work.

My question is twofold. First, I would like to know if I can run these two types of RAM together and, if so, how. Then, I would like to know what kind of documentation and values should I be looking at when trying to configure all those little settings to make two different types of RAMs compatible (when possible, of course).


If it helps, here are the references for the sticks:

G.Skill: F3-12800CL7D-4GBXM
Kingston: KHX18C9T2K2/8X


Also, here are photos of the BIOS info (with XMP profiles) for both RAMs:







Best regards,
José Devezas

More about : mixing skill ripjaws 2x2gb cl7 1600mhz kingston hyperx predator 2x4gb cl9 1866mhz

a b } Memory
August 20, 2014 10:10:35 AM

not at all a good idea mixing ram of different brands and with different mhz and latency always creates some weird problems like bsod restarts shutdowns etc.....
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August 20, 2014 10:13:22 AM

prit87 said:
not at all a good idea mixing ram of different brands and with different mhz and latency always creates some weird problems like bsod restarts shutdowns etc.....


So what you're saying is that more frequently than not, the system will become unstable, or that this is certainly going to happen? Is it even worth the effort to test if this happens?
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a b } Memory
August 20, 2014 10:17:28 AM

it may happen the moment you install the ram and boot your pc or it may happen after 6 months.... but most likely the problems occurs instantly.....
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August 20, 2014 10:23:31 AM

prit87 said:
it may happen the moment you install the ram and boot your pc or it may happen after 6 months.... but most likely the problems occurs instantly.....


Well it didn't even boot (and I mean literally didn't show anything) with the two RAMs. It might just not be worth the hassle to get from 8GB to 12GB anyway.

I'm still curious though if it's possible to make the machine boot by tweaking the settings. I tried some values but none worked.
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a b } Memory
August 20, 2014 10:34:01 AM

generally underclocking the ram does the job in some cases but there is always a 50% chance .....
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a c 2209 } Memory
August 20, 2014 11:50:46 AM

Try with the 1600 sticks set manually to 8-8-8-24, DRAM voltage 1.57 (safe) and boot, then shut down and add the 1866 sticks and try
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