Type of So-DIMMS T61vT60

[ccd]

It seems that PC2-5300 DDR2-667SODIMM non-ECC will not work in T61. What is the correct spec for the memory then? DDR3?

[Troels]

Hi,
DDR2-667 / PC2-5300 ought to work - since this is what it uses from stock (regardless if the T61 has a "Penryn" or "Merom" CPU).
What happens when you power it on?

[istudio]

My T61 work with 2 SODIMM now:

Stock: Hynix DDR2-667(5300) 1G (DS)
Extra: Kingston DDR2-667 (5300) 2G (DS)

What happen to your T61 now? any beep codes?

[ccd]

My T61 work with 2 SODIMM now:

Stock: Hynix DDR2-667(5300) 1G (DS)
Extra: Kingston DDR2-667 (5300) 2G (DS)

What happen to your T61 now? any beep codes?

I have put in Kingston 2GB DDR2 533/667 MHZ PC-5300 SO-DIMM and it makes eight beeps gives a message and only recognizing 2gb of the old chip -- I went to the thinkpad upgrades site and it states that I should use DDS3 1066 PC3 8500 1066MHZ SODIMMs? Does it make any sense? thanks for your feedback - basically trying to get 4 gb instead of existing 3gb in my Thinkpad T61... any experience of this?

[richk]

That doesn't make sense. You need DDR2 memory - PC5300 or faster (PC5400 or PC6400 are OK, but work at PC5300 speed)

[EAkamai]

That can't be correct info on the upgrades site.
The Kingston PC5300 works perfectly on this T61, but only added a gb for 2gb total: 1gb came with + added the Kingston 1gb. No hiccups at all.