wrote:
Experimenting with Windows 10 Pro 64bit.
I want to replace the two chips with 4GB chips.
Could use any suggestions what I might need that will work with
this computer.

I'm not a techie - like the other fine folks here - but I just
finished adding RAM to my Lenovo T500 - similar vintage to
your Samsung - P8400 2.26 but Win 8 Pro originally Vista.
See the recent thread in this newsgroup for my experience -
but to summarize -
- G.Skill F3-12800CL9S-4GB SQ series DDR3-1600
did not work - I believe this was high density ? 4 chips.
- G.Skill F3-8500CL7S-4GB SQ DDR3-1066
did work - I believe this is low density ? 8 chips.
I upgraded from 3 GB to 6 GB re-using the 2 GB DIMM.
I'm quite sure my max. is 2 x 4 = 8 GB.
Not really any significant performance improvement,
that I can see yet - but I'm not doing any intensive stuff.
The SSD that I installed a couple months ago was more
noticeable - start up and shut down significantly improved.
The first DIMM was $ 30. Canadian - luckily the store
let me exchange it for the $ 35. one.
The SSD was Amazon . ca ~ $ 65. free shipping.
Crucial MX500 250 Gig. Their software download worked
great to duplicate the old HD prior to the swap-out.
Good luck.
John T.

The drive I will use in the end is a SAMSUNG SSD EVO 860. Thiis is
the 32 bit drive I currently use.
It sounds like you purchased your memory local? Is G.Skill the
brand? Bill

G.Skill is the brand I have in the test machine (8x8GB DDR3).
They used Hynix chips on those. Yours are not likely
to be Hynix, because the 8500 DIMMs are a different
generation (like... stepping into a time machine).
No matter what the brand, always read customer reviews when
some are offered (this is because, when chip supplies run
out, they may need to find a second source of similar chip,
with disasterous consequences).
Based on my experience so far with G.Skill, I've had
no problems with them. For their enthusiast grade
stuff, G.Skill would be about the same as some
Corsair or OCZTechnology (when they still existed).
The machine I'm typing on has had OCZTechnology (2x1GB),
Kingston (Non-HyperX 4x2GB) and Corsair (4x2GB). I don't
think G.Skill made stuff for my older machine. And finding
that Corsair when I did, was about as unlikely as you
guys finding that 8500 sitting around...
Paul

I ordered the recommended G.Skill from NewEgg. Will report when it
arrives and how it goes.
Bill


As long as you didn't rely on the newegg Memory Finder tool.
I just checked for my T500 2242 and it listed the G.Skill
DIMM that did not work.
... along with 247 other 4 GB DIMMs.
Buyer beware.
John T.

I relied on your post in T500. So I am going to blame you if it they do not
work :-). My computer has Intel's Mobile Intel(R) 4 Series Express Chipset.
I am having a problem with my HDMI port working properly. The screen will
start flashing. I have tried different WDDM files and can not get it to
work reliably. The VGA port works fine. Did you have a problem with this?

Chips I Purchased: G.SKILL 4GB 204-Pin DDR3 SO-DIMM DDR3 1066 (PC3 8500)
Laptop Memory Model F3-8500CL7S-4GBSQ 2
--
Bill

Brought to you from Anchorage, Alaska