Overclocking / CPU / RAM / MOB

Hello guys, my specs,

MOB : MSI 790FX-GD70
CPU : AMD Athlon II x4 630@2,8 Ghz
GPU : ATi Radeon from Gygabite / 5850HD, 1GB, GDDR5, 256Bytes
RAM : KINGSTON 4GB, Dual Channel@1333 Mhz, CL7 Latency
HDD: WD, Caviar Green, 1TB, 64MB/Buffer
DVD: LG@22x, Rewriteable

I have overclockings problem, I want to overclock my CPU to ~3,8Ghz and make the RAM work with CL7 Latency(7-7-7-21)

I had already entered the BIOS and overclocked from FSB my CPU to 3,4Ghz but if I want to go furthermore I have a CRASH, probably because I need to increase the Voltage, the BIOS has the Voltage option with gray and I cant access them and I don't know how to unlock them.

Also the RAM, I have installed CPU-Z obviously and I saw there the memory works with 9 clocks-9 clocks-9 clocks-24 clocksm where it should write 7-7-7-21.

Now, let me show you how it looks :

CPU

http://www.mypicshare.com/thumbs/20100201/kut9ewxn.jpg
RAM

http://www.mypicshare.com/thumbs/20100201/kaxn22er.jpg

And now I want to ask you what means "Unganged"... it means that the RAM doesen't works in DUAL CHANNEL ? Is it good or bad ?

Thank you,
Vlad