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I've got an Intel Core Duo T2300 in my laptop (Lenovo 3000 N100, 0768-49G). Here is what I could find out about it:

$ sudo dmidecode 
# dmidecode 2.11
SMBIOS 2.4 present.
42 structures occupying 1436 bytes.
Table at 0x000DC010.

Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
        Vendor: LENOVO
        Version: 61ET37WW
        Release Date: 06/04/07
        Address: 0xE6B70

Handle 0x0002, DMI type 2, 8 bytes
Base Board Information
        Manufacturer: LENOVO
        Product Name: CAPELL VALLEY(NAPA) CRB

Handle 0x0004, DMI type 4, 35 bytes
Processor Information
    Socket Designation: U2E1
    Type: Central Processor
    Family: Other
    Manufacturer: Intel
    ID: E8 06 00 00 FF FB E9 BF
    Version: Genuine Intel(R) CPU           T2300  @ 1.66GHz
    Voltage: 3.3 V
    External Clock: 166 MHz
    Max Speed: 2048 MHz
    Current Speed: 1600 MHz
    Status: Populated, Enabled
    Upgrade: ZIF Socket
    L1 Cache Handle: 0x0005
    L2 Cache Handle: 0x0006
    L3 Cache Handle: Not Provided
    Serial Number: Not Specified
    Asset Tag: Not Specified
    Part Number: Not Specified

$ cat /proc/cpuinfo 
processor   : 0
vendor_id   : GenuineIntel
cpu family  : 6
model       : 14
model name  : Genuine Intel(R) CPU           T2300  @ 1.66GHz
stepping    : 8
microcode   : 0x39
cpu MHz     : 1000.000
cache size  : 2048 KB

I believe the chipset is "Mobile Intel 945GM Express", but I don't know how to verify it on a Linux system.

I'm not sure about the socket, but Intel claims "Sockets Supported: PBGA479, PPGA478". Now, I'd like to upgrade to the fastest compatible CPU available, but I'm a bit lost in all the details. Can you guys help me out with a couple of questions, please?

  1. What CPUs can I choose from? (I think it's only the Core2Duo line, but it should be enough for an upgrade)
  2. Can I use a 64-bit CPU?
  3. Can I use a CPU with a higher FSB than 667 MHz?
  4. Do I have to worry about additional cooling, or is it enough to check for similar voltage/TDP values?

Thank you!

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up vote 5 down vote accepted

If you look at the Lenovo link you provided, they give you a list of compatible processors:

Intel Celeron M processor:

  • 420(1.6GHz), 1MB L2 cache
  • 430(1.73GHz), 1MB L2 cache

Intel Core Solo processor:

  • T1300(1.66GHz), 2MB L2 cache

Intel Pentium dual-core processor:

  • T2060(1.6GHz), 1MB L2 cache

Intel Core Duo processor:

  • T2250(1.73GHz), 2MB L2 cache
  • T2350(1.86GHz), 2MB L2 cache
  • T2300(1.66GHz), 2MB L2 cache
  • T2300E(1.66GHz), 2MB L2 cache
  • T2400(1.83GHz), 2MB L2 cache
  • T2500(2GHz), 2MB L2 cache

Intel Core 2 Duo processor:

  • T5200(1.6GHz), 2MB L2 cache
  • T5500(1.66GHz), 2MB L2 cache
  • T5600(1.83GHz), 2MB L2 cache
  • T7200(2GHz), 4MB L2 cache

I've highlighted the fastest one they say will work.

share|improve this answer
Thank you, techie007! This implies the answers to my other questions are: (2) 64 bit is fine, (3) FSB should be the same. Since 7200/7400/7600 seem to be all compatible - do you think it's worth going for the fastest CPU clock? This would touch my fourth question. – Pavel Sep 22 '12 at 16:01
It should be fine with the stock cooling. – Ƭᴇcʜιᴇ007 Sep 22 '12 at 16:43
I just upgraded from a T2300E to T7200. Here's the story:… – Sinan Ünür Sep 29 '12 at 21:33
"Long story short" - thanks for the SuperUser shout-out. ;) – Ƭᴇcʜιᴇ007 Sep 30 '12 at 5:12
Thanks again, T7200 is working like a charm :) – Pavel Oct 6 '12 at 14:28

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