Hi. Is it ok to add a 512MB DDR2-533Mhz SODIMM to a laptop unit w/ existing standard 512MB DDR2-667Mhz SODIMM?

Answer 1

Well technically it is okay, but it will cause the 667Mhz RAM to run at the slower 533Mhz speed, so I wouldn't recommend you do it. Try to find some 667Mhz, it shouldn't be much more expensive.

Answer 2

Many laptops come with two memory slots, but, the sticks are smaller, like they'll install two sticks of cheaper 256MB RAM, so, you'll need to remove one, to stick in a bigger stick!

Then, you would have 768 Mb of RAM, but, like others say, all the memory runs at the speed of the slowest stick!

Usually, when I hotrod systems, I begin by running a fast Operating System, that is upto 50X faster than Microsoft Windows XP, and that would be http://pcllinuxos.com that screams on 512 Mb of SODIMM and finds most wifi cards, also.

Big support forum, all FREE software, runs live in CD and RAM disc, runs 50X faster when it is installed, can install as a dual boot system, and is virus proof. Oh, and, it rescues Windows when it crashes, rescues 'dead' drives, finds lost or erased files...

No wonder that Microsoft.com, Hotmail.com, and MSN.com all run on 45,000 Linux computers!

Answer 3

It totally depends on if the memory is compatible with your laptop. In theory it should be okay since usually computers are backwards compatible, BUT some computer makers make it difficult to use anything but their own brand of memory. Hope this helps.

Answer 4

It's good to have the same Mhz,.. mixing can cause one to fall down to the others Mhz,...

Or worse,.. it might be weird and drop even LOWER then the lowest of the two.

So try to get the same Mhz if you want them to stay at 512MB each (oh ya,.. that might drop too when you mix them).