P67a-gd55 multplier not dropping on idle

Question

OK guys. I have the MSI P67A-GD55 B3 mobo with the 1.11BIOS updated with an i7 2600k CPU
I have noticed 1 problem with the current BIOS update and would like someone at MSI to test and possibly do another update for this if needed.
I have the following setup
C1E support enabled
CPU ratio : 34
Base Frequency : 1000
Internal PLL Overvoltage : enable
EIST : enable
Internal Turbo boost : enable
Adjust DRAM Frequency : 1600
vDroop control : lower
Intel C-State : enable
If I do a factory restore and set this settings without touching the CPU ratio(multiplier), then the CPU multiplier will drop to x16 when idled.
If I go back into the BIOS and change only the multiplier up to 60, keep going up to cycle through and set it to 34 again, then CPU multiplier no longer drop down when idle inside Windows.
Ideally, I would like to over lock the CPU to x42 and still retain the abily tohave the multiplier drop when idle.
Can someone look into this and test if it happens to them as Welland/or how to fix it.

Answer 1

I think I know what you are talking about.  You want to use the Intel Speed Stepping feature (have the CPU idle at a low Freq, but then turbo boost to a higher freq).  For the MSI boards this is possible, but you can't do it via the CPU Multiplier.  You have to use the CPU Ratio Limit setting.  To help you, here is my bios settings.  My P67A-GD55 board is using Bios 1.9.
The below settings allow my i2500K process or idle at 1.6Gig, but then turbo boost to 4.2Gig under heavy load.  Please be sure you have a good CPU cooler before doing any O/C'ing.
Overclocking Menu:
CPU Base Frequency [10kHz] [10000]
Adjust CPU Ratio [33]
Adjust CPU Ratio in OS [Disabled]
Internal PLL Overvoltage [Auto]
EIST [Enabled]
Intel Turbo Boost [Enabled]
DRAM Frequency [DDR3-1600MHz]
Extreme Memory Profile (X.M.P) [Disabled]
DRAM Timing Mode [Auto]
Spread Spectrum [Disabled]
VDroop Control [Auto]
CPU Core Voltage [Auto]
CPU I/O Voltage [Auto]
DRAM Voltage [Auto]
System Agent Voltage (SA) [Auto]
CPU PLL Voltage [Auto]
PCH 1.05 [Auto]
DDR_VREF_CA_A [Auto]
DDR_VREF_CA_B [Auto]
DDR_VREF_DA_A [Auto]
DDR_VREF_DA_B [Auto]
Overclocking/CPU Features Menu:
Active Processor Cores [All]
Limit CPUID Maximum [Disabled]
Execute Disable Bit [Enabled]
Intel Virtualisation Tech [Disabled]
Intel VT-D Tech [Disabled]
Power Technology [Custom]
C1E Support [Disabled]
Overspeed Protection [Enabled]
Intel C-State [Enabled]
Package C State Limit [No Limit]
Long Duration Power Limit (W) 110
Long Duration Maintained (ms) 1000
Long Duration Power Limit (W) 130
Primary plane turbo power limit 0
1-Core Ratio Limit 42
2-Core Ratio Limit 42
3-Core Ratio Limit 42
4-Core Ratio Limit 42