View Full Version : Types of RAM

11-20-2010, 02:04 AM
I want to upgrade my Dell Inspiron E1705 RAM from 1GB to the maximum RAM it can hold. There are 2 memory slots. The OS is WinXP Pro SP3.
From this URL, it said the max. RAM it can hold is 2GB

From this URL, it said it is 3.25GB.

From MS site, it said XP can handle 4GB

From the original receipt from Dell, I apparently ordered 1GB, DDR2, 533MHz 2Dimm. STUPID ME!!!

I am very confused. Exactly how many GB my laptop can hold and what kind of RAM am I looking for?

Should the RAM be DDR2 533 or DDR2 667 or DDR2 667 or it doesn't matter as long as both sticks are of the same type?

I am looking at "Patriot 2GB 200-Pin DDR2 SO-DIMM DDR2 800 (PC2 6400)". It is CAS 6. Will this fit?

Is the higher the CAS, the faster the data transfer time is?

Thanks in advance.

11-22-2010, 06:58 PM
Hi Sorcerer,

It looks like your system supports 2GB max or 1GB per slot at 667MHz. You might be able to use the PC2-6400, but the system would probably downclock the speed to 667MHz. If you use the PC2-4200, it should support it at the 533MHz speed.

Lower Latencies actually yield better performance. Hence Cas 5 would be better than Cas 6.

The thread in which you are referencing to is somewhat of a separate issue. For systems that support more than 2GB, It will only address around 3.XX GB if you are using a 32-bit O/S. This is more of an Operating System issue rather than a Hardware issue.

I would stick with what the manual recommends and go with 2 x 1Gb PC2-667 or 2 x 1Gb 533 sticks.