A few years back I purchased 4-1GB Kingston Value Ram sticks: Kingston ValueRAM 2GB (2 x 1GB) 240-Pin DDR3 SDRAM DDR3 1066 (PC3 8500) Dual Channel Kit Desktop Memory Model KVR1066D3N7K2/2G I used it on an Intel X38 board that was glitchy, finall gave up and swapped it on to an MSI X-48 board, with a Q6700 processor, that was glitchy so I scrapped the whole thing and did an I-5 build. Decided to revisit the Q6700 and the Kingston Ram and do a Home Theater build using an Intel DG43 RK. The "tested ram" spec for that board calls for 1333, 1.5 volt, non ECC ram. However when I go on the Kingston website and plug in that motherboard, it specifies the 1066 ram. If I plug in the 2-2GB sticks of 1333 that I use in the I-5 build everything works fine. But when I plug in the 1066 ram, 2 of the 1GB sticks are accepted by the motherboard and two are rejected with the 3-beep code. When I was running this ram on the previous motherboards, they were always glitchy, beep codes at startup, lock-ups. I must have run Memtest86 100 times and always showed no errors. Does anyone have any suggestions as to where I should look for the problem? Ram always says "limited lifetime warranty" but when I have run Memtest86 in the past, it shows no problems. Does anyone have any suggestions about warranty replacement? I think that will be a waste of time.