How to check what RAM is suitable

Acer / 1694wlmi
August 12, 2010 at 21:20:05
Specs: Windows XP
Hi,
I want to upgrade my laptop RAM. These are the specification:

Intel Pentium M Processor 760
(2.0GHz, 533MHz FSB, 2 MB L2 cache)
I'm currently using 512MB DDR2.

What are the best RAM:FSB ratio to get the fastest speed?

I wonder is it possible to get 2 1Gb PC2-5300 DDR2-667 or better to get PC-2700 DDR-333?

Thank you.


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#1
August 12, 2010 at 21:25:41
http://www.crucial.com

Use the "Crucial System Scanner Tool" to ascertain compatable memory.

Have you checked if the BIOS has the facility to alter RAM Tinings ?

"I wonder is it possible to get 2 1Gb PC2-5300 DDR2-667 or better to get PC-2700 DDR-333?"

These are two different types of memory not interchangeable....


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#2
August 12, 2010 at 21:35:43
Hi X86,
Thank you. I've use the "Crucial System Scanner Tool", it recommended DDR2 PC2-5300.

# Maximum Memory Capacity: 2048MB
# Available Memory Slots: 2
# Total Memory Slots: 2
# Dual Channel Support: No
# CPU Manufacturer: GenuineIntel
# CPU Family: Intel(R) Pentium(R) M processor 2.00GHz Model 13, Stepping 8
# CPU Speed: 1994 MHz

How do I check if the BIOS has the facility to alter RAM Tinings?

Thank you.


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#3
August 13, 2010 at 05:38:37
What are the best RAM:FSB ratio to get the fastest speed?

Generally the best ratio is 1:1 although 1:2 is also an option. And that ratio is based on frequency, not the bogus FSB or DDR ratings. In other words, your 533MHz FSB CPU has a frequency on 133MHz, so you need RAM that runs at 133MHz (266MHz DDR) for 1:1 or 266MHz (533MHz DDR) for 1:2. It won't hurt to run DDR2-667 but the ratio will be 133:333 (2:5) which is less that optimal.

"How do I check if the BIOS has the facility to alter RAM Tinings?"

You simply enter the BIOS & look to see if the settings are available. On a laptop, chances are they're not. And even if they are, altering timings doesn't do all that much to improve performance, & if you don't know what you're doing, it can possibly make the system unstable.


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#4
August 13, 2010 at 10:10:17
Also, when dealing with laptops you are better off buying memory that has been specifically recommended for your laptop. Many vendors have what is called system specific RAM. This assures total compatibility.

Crucial.com guarantees the RAM they recommend for your laptop will work in your laptop. Others may do the same.


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#5
August 13, 2010 at 20:26:49
Thank you for all your helps.
I guess I better not alter the RAM Timings.

I checked with Crucial and it recommended DDR2 PC2-5300. But seem like the FSB:RAM ratio will be 133:333 (2:5).


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