Hi

Is it possible to upgrade CPU on my  ThinkCentre Edge 71 (1578E1G) G840 2.80GHz to Intel Core i5 or i7?

My motherboard:

Manufacturer    LENOVO
Model    To be filled by O.E.M.
Version    ThinkCentre Edge71
Motherboard Chipset:  Intel H61 (Cougar Point)
Chipset Vendor    Intel
Chipset Model    Sandy Bridge
Chipset Revision    09
Southbridge Vendor    Intel
Southbridge Model    ID1C5C
Southbridge Revision    05

My CPU:

Processor Name:                         Intel Pentium G840
  Original Processor Frequency:           2800.0 MHz
  Original Processor Frequency [MHz]:     2800
  CPU ID:                                 000206A7
  CPU Brand Name:                         Intel(R) Pentium(R) CPU G840 @ 2.80GHz
  CPU Vendor:                             GenuineIntel
  CPU Stepping:                           Q0
  CPU Code Name:                          Sandy Bridge-DT
  CPU S-Spec:                             SR05P
  CPU Thermal Design Power (TDP):         65.0 W
  CPU IA Cores Thermal Design Current (TDC): 113.5 A
  CPU GT Cores Thermal Design Current (TDC): 35.5 A
  CPU Power Limits (Max):                 Power = 84.00 W, Time = 1.00 sec
  CPU Power Limit 1 (Long Duration):      Power = 65.00 W, Time = 1.00 sec [Locked]
  CPU Power Limit 2 (Short Duration):     Power = 81.25 W, Time = 0.00 sec [Locked]
  CPU Type:                               Production Unit
  CPU Platform:                           Socket H2 (LGA1155)
  Microcode Update Revision:              28
  Number of CPU Cores:                    2
  Number of Logical CPUs:                 2
 [Operating Points]
  CPU LFM (Minimum):                      1600.0 MHz = 16.00 x 100.0 MHz
  CPU HFM (Maximum):                      2800.0 MHz = 28.00 x 100.0 MHz
  CPU Turbo:                              2800.0 MHz = 28.00 x 100.0 MHz [Locked]
  CPU Current:                            2793.9 MHz = 28.00 x 99.8 MHz @ 1.1759 V
  CPU Bus Type:                           Intel Direct Media Interface (DMI) v2.0
  Maximum DMI Link Speed:                 5.0 GT/s
  Current DMI Link Speed:                 5.0 GT/s
 [Cache and TLB]
  L1 Cache:                               Instruction: 2 x 32 KBytes, Data: 2 x 32 KBytes
  L2 Cache:                               Integrated: 2 x 256 KBytes
  L3 Cache:                               3 MBytes
  Instruction TLB:                        4 KB Pages, 4-way set associative, 128 entries
  Data TLB:                               4 KB Pages, 4-way set associative, 64 entries

Knows anyone?

Propably I'll buy i7-2600S and exchange my existing G840 2.80GHz.

http://ark.intel.com/products/52215

According to:

http://www.lenovo.com/shop/emea/content/pdf/desktops/thinkcentre/edge-71/en/EDGE71_DS_EN.pdf

it should be OK and I hope the power supply can manage it.

BTW do I need another CPU heatsink for i7-2600S, or I can use the same from G840?

Knows anyone if i7-2600S will work with an original Lenovo mainboard, I mean will the BIOS support it?