cpuLook

 Intel® Core™2 Duo Processor E6540
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Processor Number Δ E6540
Processor Technology 65 nanometer technology
Last Level Cache 4M
Clock Speed 2.33 GHz
Front Side Bus Speed 1333 MHz
Intel® QuickPath Interconnect  
Cores 2
Intel® Hyper-Threading Technology N/A
Integrated Memory Controller N/A
Other Intel Technologies Intel® 64,
Enhanced Intel SpeedStep® Technology,
Dual-core,
Execute Disable Bit°,
Intel® VT±
Package FC-LGA
Chipset N/A
Memory Type/Speed NA
Boards NA
Slot/Socket Type LGA775
Pin Count 775-land
sSpec Number SLAA5

http://compare.intel.com/PCC/intro.aspx

 Intel® Core™2 Duo Processor E4700
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Processor Number Δ E4700
Processor Technology 65 nanometer technology
Last Level Cache 2 MB
Clock Speed 2.60 GHz
Front Side Bus Speed 800 MHz
Intel® QuickPath Interconnect  
Cores 2
Intel® Hyper-Threading Technology N/A
Integrated Memory Controller N/A
Other Intel Technologies Intel® 64,
Enhanced Intel SpeedStep® Technology,
Dual-core,
Execute Disable Bit°
Package FC-LGA
Chipset Intel® 945G Express Chipset,
Intel® 945P Express Chipset,
Intel® 946GZ Express Chipset,
Intel® Q965 Express chipset,
Intel® Q963 Express chipset,
Intel® G965 Express chipset,
G31 Express chipset,
G35 Express chipset,
P35 Express chipset,
Q33 Express chipset,
Q35 Express chipset,
X38 Express chipset,
P45,
Q43,
Q45,
G45,
G43,
G41,
X48,
X38
Memory Type/Speed DDR2
Boards NA
Slot/Socket Type LGA775
Pin Count 775-land
sSpec Number SLALT

http://compare.intel.com/PCC/intro.aspx

  Pentium® Dual-Core Processor E5300

Processor Number Δ E5300
Processor Technology 45 nanometer technology
Last Level Cache 2M
Clock Speed 2.60 GHz
Front Side Bus Speed 800 MHz
Intel® QuickPath Interconnect N/A
Cores 2
Intel® Hyper-Threading Technology N/A
Integrated Memory Controller N/A
Other Intel Technologies Intel® 64,
Enhanced Intel SpeedStep® Technology,
Execute Disable Bit°,
Intel® Virtualization Technology
Package FC-LGA6
Chipset N/A
Memory Type/Speed DDR2
Boards NA
Slot/Socket Type LGA775
Pin Count 775-land
sSpec Number SLB9U

http://compare.intel.com/PCC/intro.aspx

  Pentium® Dual-Core Processor E5200

Processor Number Δ E5200
Processor Technology 45 nanometer technology
Last Level Cache 2M
Clock Speed 2.50 GHz
Front Side Bus Speed 800 MHz
Intel® QuickPath Interconnect  
Cores 2
Intel® Hyper-Threading Technology N/A
Integrated Memory Controller N/A
Other Intel Technologies Intel® 64,
Enhanced Intel SpeedStep® Technology,
Execute Disable Bit°
Package FC-LGA8
Chipset G31 Express chipset,
G33 Express Chipset,
G35 Express chipset,
P35 Express chipset,
Q33 Express chipset,
Q35 Express chipset,
X38 Express chipset,
P31 Express chipset,
P45,
Q43,
Q45,
G45,
G43,
G41,
X48,
P43
Memory Type/Speed DDR2
Boards NA
Slot/Socket Type LGA775
Pin Count 775-land
sSpec Number SLAY7

http://compare.intel.com/PCC/intro.aspx

  Pentium® Dual-Core Processor E2220

Processor Number Δ E2220
Processor Technology 65 nanometer technology
Last Level Cache 1 MB
Clock Speed 2.40 GHz
Front Side Bus Speed 800 MHz
Intel® QuickPath Interconnect  
Cores 2
Intel® Hyper-Threading Technology N/A
Integrated Memory Controller N/A
Other Intel Technologies Intel® 64,
Enhanced Intel SpeedStep® Technology,
Dual-core,
Execute Disable Bit
Package FC-LGA
Chipset N/A
Memory Type/Speed NA
Boards NA
Slot/Socket Type LGA776
Pin Count 775-land
sSpec Number SLA8W

http://compare.intel.com/PCC/intro.aspx

  Pentium® Dual-Core Processor E2200

Processor Number Δ E2200
Processor Technology 65 nanometer technology
Last Level Cache 1 MB
Clock Speed 2.2 GHz
Front Side Bus Speed 800 MHz
Intel® QuickPath Interconnect  
Cores 2
Intel® Hyper-Threading Technology N/A
Integrated Memory Controller N/A
Other Intel Technologies Intel® 64,
Enhanced Intel SpeedStep® Technology,
Dual-core,
Execute Disable Bit
Package FC-LGA
Chipset N/A
Memory Type/Speed NA
Boards NA
Slot/Socket Type LGA775
Pin Count 775-land
sSpec Number SLA8X

http://compare.intel.com/PCC/intro.aspx

  Pentium® Dual-Core Processor E2180

Processor Number E2180
Processor Technology 65 nanometer technology
Last Level Cache 1 MB
Clock Speed 2 GHz
Front Side Bus Speed 800 MHz
Intel® QuickPath Interconnect  
Cores 2
Intel® Hyper-Threading Technology N/A
Integrated Memory Controller N/A
Other Intel Technologies Intel® 64,
Enhanced Intel SpeedStep® Technology,
Dual-core,
Execute Disable Bit
Package FC-LGA
Chipset N/A
Memory Type/Speed NA
Boards NA
Slot/Socket Type LGA775
Pin Count N/A
sSpec Number SLA8Y

http://compare.intel.com/PCC/intro.aspx

  Pentium® Dual-Core Processor E2160

Processor Number E2160
Processor Technology 65 nanometer technology
Last Level Cache 1 MB
Clock Speed 1.80 GHz
Front Side Bus Speed 800 MHz
Intel® QuickPath Interconnect  
Cores 2
Intel® Hyper-Threading Technology N/A
Integrated Memory Controller N/A
Other Intel Technologies Intel® 64,
Enhanced Intel SpeedStep® Technology,
Dual-core,
Execute Disable Bit
Package FC-LGA
Chipset N/A
Memory Type/Speed NA
Boards NA
Slot/Socket Type LGA775
Pin Count N/A
sSpec Number SLA3H

http://compare.intel.com/PCC/intro.aspx

Taking the time to take quick looks at CPUs and their specs for personal computers.