Hi and welcome to the Gigabyte Forum.
Where did you read the figures you are quoting as the speed of the CPU?
 well, for once it says at  MB INTELIGENT TWEAKER in bios, cpu host freqency: 200 mhz, cpu clock ratio: 6x.....my bios is BIOS F7D........
and everest
Field   Value
CPU Properties   
CPU Type   DualCore Intel Pentium E2200, 1200 MHz (6 x 200)
CPU Alias   Conroe-1M
CPU Stepping   M0
Instruction Set   x86, x86-64, MMX, SSE, SSE2, SSE3, SSSE3
Original Clock   2200 MHz
Min / Max CPU Multiplier   6x / 11x
Engineering Sample   No
L1 Code Cache   32 KB per core
L1 Data Cache   32 KB per core
L2 Cache   1 MB  (On-Die, ECC, ASC, Full-Speed)   
Multi CPU   
Motherboard ID   OEM00000 PROD00000000
CPU #1   Intel(R) Pentium(R) Dual CPU E2200 @ 2.20GHz, 2200 MHz
CPU #2   Intel(R) Pentium(R) Dual CPU E2200 @ 2.20GHz, 2200 MHz   
CPU Physical Info   
Package Type   775 Contact LGA
Package Size   3.75 cm x 3.75 cm
Transistors   167 million
Process Technology   8M, 65 nm, CMOS, Cu, Low-K Inter-Layer, 2nd Gen Strained Si
Die Size   111 mm2
Core Voltage   1.313 V
I/O Voltage   1.313 V
Typical Power   65 W
Maximum Power   99.4 W   
CPU Manufacturer   
Company Name   Intel Corporation
Product Information   
http://www.intel.com/products/processor   CPU Utilization   
CPU #1 / Core #1   15 %
CPU #1 / Core #2   7 %