RAM upgrade issues DDR2 1066 Mhz

lightxbulb

Reputable
Oct 25, 2014
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Hi!
Recently I bought a memory stick to upgrade my old PC. I had 2x2Gb DDR2-1066 sticks and I bought a 3rd one same manufacturer 2Gb DDR2-1066. The pc started shutting down randomly, and today it got stuck at bios, made 3 short beeps so I figured it was an issue with the ram. I ran memtest86+ and it didn't give any errors, however my two older sticks were labeled as ddr2-800 in memtest86+ and the newer ddr2-1111. Any ideas how I can fix this issue (for now I've took out the new memory stick and currently I have no issues, but the pc still crashed with 3 beeps the first time I started it after taking out the memory stick).

EDIT: My Windows is 64bit. The ram stick in slot0 and slot2 are the old ones and in slot1 the new one. I have 4 slots. I am not mixing ram as they're supposed to be identical. 4gb is not enough for me for working with larger files in PS and PPT. Nobody sells 4gb ddr2 here it seems.
 
Solution
Mixing RAM can always be problematic.
Your CPU more than likely has two memory controllers. The motherboard probably has four RAM slots and this will be two on each channel. This means you should be installing memory in pairs.
Keep in mind too that once you get into Windows, you will need a 64-bit version to use more than 4GB of RAM.
4GB of RAM is generally fine for anything that will runn on an older home PC anyway.

If you really do want to have more than 4GB in this old machine, you will probably need to buy two identical 4GB RAM DIMMS and remove your existing RAM.

Mixing RAM can always be problematic.
Your CPU more than likely has two memory controllers. The motherboard probably has four RAM slots and this will be two on each channel. This means you should be installing memory in pairs.
Keep in mind too that once you get into Windows, you will need a 64-bit version to use more than 4GB of RAM.
4GB of RAM is generally fine for anything that will runn on an older home PC anyway.

If you really do want to have more than 4GB in this old machine, you will probably need to buy two identical 4GB RAM DIMMS and remove your existing RAM.

 
Solution