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Need some advice on memory upgrade

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  • Memory
  • DDR2
  • Memory Upgrade
Last response: in Memory
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October 23, 2008 4:05:56 PM

OK, so it's my B-day tomorrow, and my wife asked me what I want. After much debate I decided to upgrade the RAM in my laptop.

It's a Toshiba Satellite A135-4666 (I know, not the greatest but it runs great, and was on sale)

OK, so I go to crucial.com and run a scan and it tells me this> http://www.crucial.com/systemscanner/viewscanbyid.aspx?id=8C673F1B31D926C3

Basically it states that Each memory slot can hold DDR2 PC2-4200 with a maximum of 1GB per slot. However, currently installed memory is DDR PC2-5300 (I also confirmed this by pulling one of the sticks out personally)

I plan on buying a set of 2 RAM modules at 1gig each.

My question is, do I get DDR2 PC2-4200 • CL=4 • Unbuffered • NON-ECC • DDR2-533 • 1.8V •

OR

DDR2 PC2-5300 • CL=5 • Unbuffered • NON-ECC • DDR2-667 • 1.8V


The only difference that I can see is CL5 on the PC2-5300, but it's DDR2-667. The PC2-4200 has CL4 but is DDR2-533.

I know the difference is probly minimal, but I want to squeeze every last drop of performance out of it, so thus my dilemma.

What confuses me is that the laptop currently has PC2-5300, yet it has the slower CL of 5. My laptop has a Front Side Bus of only 533 MHz, so it isn't taking advantage of the 667MHz that the PC2-5300 memory has.

From what I can gather, the PC2-4200 has a CL of 4, and is 533MHz.
So given the fact my FSB on my laptop is only 533MHz to begin with, would it make sense to get the PC2-4200 over the PC2-5300 just for the better CL, because both will run at 533MHz anyway, ? or am I way off?

More about : advice memory upgrade

a c 128 } Memory
October 23, 2008 5:49:44 PM

Your laptop has an older chipset on the motherboard; it runs at a slow speed. You can use either speed of memory; Fry's.com and newegg are pretty cheap, and the Fry's stores locations are rock bottom when on sale. I usually buy crucial or corsair. Before changing, you can run cpuid, a free download, and see what timings it detects.
October 23, 2008 6:08:47 PM

I already found a pretty good deal on either set (33 bux for a pair of 1gig sticks) and I am aware the laptop can run either speed.

I have CPU-Z(have used if for a long time) and as I stated my post, my FSB is 533MHz

Thanx, but I was kinda hoping to get an answer for the final question in my post however.

Vedalkin said:

So given the fact my FSB on my laptop is only 533MHz to begin with, would it make sense to get the PC2-4200 over the PC2-5300 just for the better CL, because both will run at 533MHz anyway?
October 23, 2008 6:18:52 PM

In your situation the real world advantage of a lower CL is minimal to none ... so go with the least expensive.
!