Could you provide information as follows:
1. What CPU do you use?
2. How do you get 3.6 GHz? (exact settings)
Please mind the conditions as below:
a) If C1E is enabled in BIOS then while CPU is idle, C1E is enabled.
But when CPU is fully loaded then C1E is disabled.
b) If C1E is disabled in BIOS then Window always disables C1E.
P.S. Could anybody else with this noise issue help to verify FVB bios? Thanks
Hi runn3R... My observations are as follows:
My earlier problem:
[P1]
[From Windows Welcome screen until Windows XP is fully loaded] Acoustic noise: "squealing" noise
[P2]
[After Windows XP is fully loaded and if Google Chrome is loaded] Acoustic noise: constant "high-pitch" noise
CPU: i7 Core 920 D0
BIOS: FVB (Load Optimized Default)
- CPU Clock Ratio [20x]
- Intel (R) Turbo Boost Tech. [Enabled]
- C1E [Enabled]
- C3/C6/C7 [Enabled] (Default is Disabled)
- EIST [Enabled]
With BIOS FVB (plus "Load Optimized Default" and C3/C6/C7 is enabled):
[1] "Squealing noise" described in P1 above
still exists but with some improvement, i.e. the duration it occurs is shorter now.
[2] "High-pitch noise" described in P2 above
does not exist.
At no-load condition (only Google Chrome is opened):
- When both "C1E" and "EIST" are enabled, the CPU voltage is maintained at 0.912V.
- When "C1E" is disabled and "EIST" is enabled, the CPU voltage is also maintained at 0.912V.
- When both "C1E" and "EIST" are disabled, the CPU voltage fluctuates slightly between 0.912V and 1.040V although most of the time (e.g. 90%) it's maintained at 0.912V.
With earlier BIOS versions (e.g. F5, F6i, etc), the CPU voltage immediately goes up to and maintains at 1.200V after the "C1E" is disabled. This phenomenon, however, is not noted with BIOS FVB. I'm not sure if the new observation with FVB is normal or not.
C1E and EIST are ENABLED.
C1E is DISABLED and EIST is ENABLED.
C1E and EIST are DISABLED.
