Overclocking Ram On AMD Platform...

I have heard from many people that it is possible to overclock ram to 1866 with phenom quad core processor. I can only get mine overclocked to 1720MHz at the most and sometimes it doesn't even work. What do I have to do to get it that high. My motherboard supports up to 2133 and my ram supports up to 2000MHz. I have the ram set at 1600MHz and the bus speed up to 215 which brings my ram up to 1720MHz. If I go 216 on the FSB it wont work. I've tried raising voltages but I'm afraid to go to high even though my motherboard can probably support it. Im affraid to fry my processor. Should I set the ram at 1333MHz and put the bus up to like 260-270 or so.

When I first built the system the ram was set at 1066MHz. Should I start from here and overclock? If I do this its seems that I would have to set the FSB really high to get the ram at 1866 or higher.

Let me know if anyone has overclocked their ram to 1866 or higher with a phenom x4 965 be or similar. Or if it's even possible. I have tons of cooling and non of that is a problem. I've overclocked my CPU up to 4.3GHz and it wont get close to 50C.

Please let me know what you think and if you have any suggestions.

Also, I know that the bulldozer is coming out soon and I would like to know if it will be able to support 1866, 2000, or 2133MHz overclock ram speeds. My motherboard supports all these frequencies.

Any suggestions are greatly appreciated.

Thank you.


CPU: AMD Phenom II x4 965 Black Edition
Motherboard: MSi 990FXA GD-80
Bios: MSi
Graphics Card: XFX Radeon HD 6790 CrossFireX
Memory: Corsair XMS3 DDR3 2000Mhz
Hard Drive: OCZ SATA III 60GB SSD
Optical Drive: SONY
Power Supply: Corsair TX750 V2
Display: 3 x 23.6" ASUS LED HDMI 1080p VE247H
Case: Corsair 600T White Graphite Series
Sound Card: THX TruStudio PRO Realtek ALC892
Speakers: On Monitors
Headphones: Corsair HS1A Headset
Mouse: RAZER DeathAdder Precision Optical
Mouse pad: COD: Black Ops
Keyboard: RAZER Lycosa Black
Operating System: Windows 7 Ultimate
CoolingCPU: Corsair H80
Graphics Card (GPU): Dual Fan
Memory: ZALMAN ZM-RC1000 TI Aluminum
Case: 2x200mm Corsair, 1x120mm Corsair
SpeedsCPU
Stock: 3.4 GHz
Overclocked: 4.2 GHz

Overclocked:
Memory
Stock: 1333Mhz
Overclocked: 1720 Mhz
Memory - Timings
Stock: 9-10-9-27
Overclocked: 11-11-11-35
Graphics Card - Core
Stock: 840 Mhz
Overclocked: 965 Mhz
Graphics Card - Memory
Stock: 1050 Mhz
Overclocked: 1200 Mhz