kefan77 Posted September 1, 2013 Share Posted September 1, 2013 MB (running latest BIOS): http://www.asus.com/Motherboards/P5Q3/ CPU (on stock): http://ark.intel.com/products/33921/Intel-Core2-Extreme-Processor-QX9650-12M-Cache-3_00-GHz-1333-MHz-FSB memory, above one stick from the new kit, below one stick from the old kit: http://i42.tinypic.com/21e3ghi.jpg I was happily using my 4x2GB 1333MHz kit, but I got hold of several 2x4GB kits for really cheap and so thought for myself, that I'll swap them and sell the 1333MHz. The MB should support 1600MHz natively, but something went wrong. When I insert 1 1600MHz module, the PC will not boot, MB will not even post (no bleep) so I cannot even enter BIOS to change any settings. When I reinsert 1333MHz all is fine. I tried 3 of those 1600MHz sticks, all with same result, but I would rule out faulty memory stick, as it's really unlikely to have 3 faulty sticks from 2 different brand new packs is highly unlikely. So I believe it has to either be setup manually or is totally incompatible, which would be a shame. here's my BIOS http://i40.tinypic.com/243jo92.jpg I originally thought, that I'll just change the settings in AI Tweaker to manual, change the FSB to 400, subsequently CPU ratio to 8 and DRAM frequency to 1600MHZ, but it seems it's going to be more complicated than that. I noticed the RAMs have different timing, but I always left it on Auto, so not sure if that will cause trouble. I'd really appreciate, if someone can tell me how to set those values in BIOS, so I can run the new RAM (even at 1333MHz for now) and when I get a new current board, it should wotk with 1600MHz out of the box. I've just tried them in HP N54L microserver and they seem to be running there just fine. thanks Link to comment Share on other sites More sharing options...
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