BIOS and Fedora Core 4 detect incorrect proccessor clock speed

[stabor23]

The system in question:
Dell Precision 620
2x 866Mhz Intel PIII Xeon Processors
OS: Fedora Core 4

When I boot my system and enter BOIS it identifies the both processors as:
266Mhz Intel PIII 133Mhz FSB 256K Cache

Here is the information i found on the processors from intel by checking the sSpec Number printed on the processors:

--------------------------
Results

sSpec Number
SL4HA

Processor Frequency
866.00 MHz

CPUID String
0686

Package Type
S.E.C.C.

Core Voltage
2.8V

Bus Speed
133 MHz

Thermal Guideline
26.8W

Core Stepping
C0

Thermal Spec
55°C

L2 Cache Size
256 KB

Manufacturing Technology
0.18 micron

L2 Cache Speed
866 MHz

Bus/Core Ratio
6.5
--------------------------

To make things more odd, fedora has another (also incorect) take on what these processors can do:

--------------------------
cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 8
model name : Pentium III (Coppermine)
stepping : 6
cpu MHz : 532.021
cache size : 256 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips : 1052.67

processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 8
model name : Pentium III (Coppermine)
stepping : 6
cpu MHz : 532.021
cache size : 256 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips : 1060.86
--------------------------

The thing that bothers me the most, and had me looking into it, is how much slower this system is than another system I have running FC4. They both have the same basic setup. The one with the problem is the Precision 620 the other (that I am working on now) is a Dimension XPS T700r. Now, the reason I do not think that this is merely an aesthetic problem is that the Dimension runs so much faster despite the fact that the Precision has 2 faster better processors, 2x the RAM, a much better graphics card, faster HDD, and is actually running less services. As a final note about the speed disparity, I run Seti@Home through BOINC and it benchmarks the PCs you install it on, it also benches the Precision much lower than other systems I have that run regular(not Xeon) and slower (in the 700Mhz range) PIIIs.

Please let me know if you have any idea how to fix this problem, know a better place to post and find a solution, or need any addtional information.


Thank you for your time,
ST