Im finally figured out what caused problems to have 1600+ ram speeds and CPU speed beyond 3800MHz. It was realy IMC, cause if i raise 2nd memory timing to 9 i can go up to 1850Mhz - and thats cool with 955 c2 revision i think. After tweaking ram timing and CPU speeds i managed this setting:

  • CPU: 3825 MHz (225x17) @ 1.48V
    CPU NB: 2700 MHz @ 1.38V
    RAM: 1800 MHz CL7-9-6-22 28 1T @ 1.65V
    HT: 2025 Mhz
    Power - LinX 52Gflops, WinrarX64 3000Kb/s, CB R10x64 16500, MaxMemm 10.2Gbps


It is stable at LinX x64 15K 20 loops and no problems at all

Some benchmarks



So guys what you think, its ok or its lame?