1974darrenh Posted February 22, 2020 Share Posted February 22, 2020 I have bought a computer that has one stick of Corsair CML16GX3M2A1600C10 installed. Runs fine on its own. I also have a new stick of Corsair CML8GX3M1A1600C10 which also runs fine on its own, but if I put the 2 together, my PC wont boot at all. Motherboard is ASUS P8Z77-V-LX with latest BIOS update. Any ideas please? :confused: Link to comment Share on other sites More sharing options...
1974darrenh Posted February 23, 2020 Author Share Posted February 23, 2020 Anyone please? Link to comment Share on other sites More sharing options...
c-attack Posted February 24, 2020 Share Posted February 24, 2020 You’ve combined modules from two different kits. It is electrically sensitive enough that subtle material differences can cause problems. These two appear to be the same size and type, so you might have a shot at it by upping voltage a little. You likely cannot use XMP to set the 1600 overclock value and will need to manually set timings for anything other than 1333. What happened the other 8GB stick from the CML16.... kit? Was this bought from a builder who split the kit apart? Link to comment Share on other sites More sharing options...
1974darrenh Posted February 25, 2020 Author Share Posted February 25, 2020 Yeah I think he split the kit. How do I up the voltage and set timings in my bios? Link to comment Share on other sites More sharing options...
c-attack Posted February 25, 2020 Share Posted February 25, 2020 (edited) It will be BIOS specific. Most Asus BIOS let you enter by mashing delete. Then within it you will need to find "DRAM voltage". DDR3 is typically 1.50v at default. You should be able to go up to 1.65v. I also would check to see if XMP is enabled. Having it on with a mixed kit likely leads to instant failure and if it is enabled, unchecking it could resolve the prime issue. Edited February 25, 2020 by c-attack Link to comment Share on other sites More sharing options...
1974darrenh Posted February 25, 2020 Author Share Posted February 25, 2020 Will give it a go. Thank you very much. Link to comment Share on other sites More sharing options...
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