I already have stock 4gb 1333 mhz DDR3 RAM installed. But I feel like I need 8GB, because it is always being 75 percent or more used, often more than 85.

The problem is, I can't find that exact same type to put in the second slot.

So my question is, which 4GB ram stick can I put inside?

I live in Europe, so I would like to order something from Europe or China, not USA.

EDIT: I use 64bit Windows 10 in my Compaq CQ2951EC Desktop which has the HP 2AE2 motherboard.

closed as off-topic by music2myear, Twisty Impersonator, DrMoishe Pippik, Mike Fitzpatrick, BillP3rd Feb 21 at 16:46

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  • 1
    Did you look up your motherboard specs at HP.com? What exact PC model is it? – Moab Feb 19 at 16:45
  • It is an HP Compaq CCQ2951EC computer. – Petr L. Feb 19 at 21:06

The magic of Google compelled me to search for "HP 2AE2" which revealed:

Memory upgrade information
Dual channel memory architecture
Two 240-pin DDR3 UDIMM sockets
Supports DDR3 UDIMMs
PC3-8500 (DDR3-1066)
PC3-10600 (DDR3-1333)
PC3-12800 (DDR3-1600 with Ivy Bridge processors)

Non-ECC memory only, unbuffered
Supports up to 4 GB on 32-bit* systems
Supports up to 16 GB on 64-bit systems (with 8 GB UDIMMs)
*NOTE: 32-bit systems cannot address a full 4.0 GB of memory.

If you have one 4GB memory module already in the first slot, make sure to buy exactly the same type of memory for the second slot.

  • Thanks for help. I found out that my PC uses an Ivy Bridge processor, so I think adding one 4gb 1600 stick will be fine. One question though, does the manufacturer make a difference, so can I have Samsung and for example Kingston at the same time? – Petr L. Feb 19 at 21:21
  • hardwarerecs.stackexchange.com is the place to talk hardware, i.e., Samsung v. Kingston. However, I always dismount the existing memory, get the part and model numbers from it, remount it, and add a duplicate, unless I am upgrading further than another module will take me (e.g., over 8GB). Before you do anything, though, check to make sure your OS is 32-bit or 64-bit; only a 64-bit OS can use > 4GB. – K7AAY Feb 19 at 21:24
  • This may be too specific, but are options like this suitable? amazon.com/Kingston-ValueRAM-4GB-1600MHz-DDR3/dp/B00B90PX48 or this model: Kingston Value 4GB DDR3 1600 CL11 SR STD Height 30mm. Just to know I understood you correctly. – Petr L. Feb 19 at 21:30
  • " so can I have Samsung and for example Kingston at the same time?" Most of the time yes you can mix different manufacturer memory modules as long as the specs are the same, no guarantees though. – Moab Feb 19 at 21:50
  • Also, the voltage should be the same, right? – Petr L. Feb 20 at 11:21

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