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What speed is my laptop RAM???

Eug

Eug

Lifer
I have one stick of PC100 3-2-2 NEC 128 MB and one stick of PC100 2-2-2 Crucial 128 MB.

Should I scrap the CAS 3 one? I've been getting rare, but nonetheless irritating, blue screens in my Win 2000 machine, esp. when coming out of hibernation. I first thought it was my Network card, but I've since gone wireless and removed the old one with no luck. I reinstalled the OS once.

My rig.

By the way, an extra 256 stick of Crucial is only US$91 at the moment.

Now I just need to know where I can find a good 5400 rpm drive for the thing. 4200 rpm is too slow for my tastes.

EDIT: BTW, mine is the Sceptre 69002, which is the same as the Dell Inspiron 5000e.
 
Have you tried pulling the CAS3 stick and the problem goes away or the other way around with the CAS2? If you can isolate the problem this way maybe what you have is a problematic stick but not necessarily the CAS rating of the memory. Only 2.5" HDD with 5400RPM are IBM's.
 
Make sure cas3 is in the first dim slot.

IIRC it will sense the cas speed of dim#1. If your cas2 is there, it will try to run both at cas 2.
 
Hmmm... That's interesting. I've already pulled the CAS3 RAM but the blue screens happen infrequently so I dunno if it's made a true improvement yet, but so far so good. I dunno either which dimm slot is #1 or #2 since a single stick works in either but it must be labelled somewhere. I guess I can check the BIOS when I get the chance. Hopefully the RAM timings are there. If not I can run Sandra or something I guess?

If it is trying to run CAS3 memory at CAS2, I may end up buying new RAM anyway, esp. since a 256 stick is so cheap these days.

.. Eug salivates at 384 MB of RAM goodness ..

Any problems with the IBM Travelstar drives?
 
Hmmm.... I don't have software that lists CAS speed, and my BIOS don't show it. However, I've been running Sandra 2001 with some interesting results.

Running memory benchmark, each twice, with a reboot (of course) before each switch.

Nec RAM 128 MB Cas 3-2-2 alone: 279/326 and 282/326
Crucial 128 MB Cas 2-2-2 alone: 315/373 and 335/374

Running both together (Nec RAM on right): 299/348 and 316/362
Running both together (Crucial on right): 301/350 and 315/365

With both together the RAM speeds are a bit slower than Crucial alone, but significantly faster than the NEC ram alone. This suggests to me that no matter where the Crucial ram is located, the computer is trying to run the ram at 2-2-2, and that's probably why I'm getting these rare reboots.

If my interpretation is correct, I'm going to buy another stick of 2-2-2 Crucial ram (256 MB) asap. How much do you think I should sell that Nec ram for?

By the way, is there any software that shows Cas settings in Windows 2000?
 
Sandra will show you that using the system summary or the mobo info. I guess you were able to see what you wanted to see. So go forth and buy the 256MB. As for selling the 128Mb, I bought mine last month for $48.00 when the price of a regular 128SDRAM was $33.00. So do not expect anything more than $48.00 or in the ball park therein. Do not expect significant performance either and also about the reboot problem, I sincerely doubt it'll go away with a new 256SODIMM.
 


<< Sandra will show you that using the system summary or the mobo info. >>

I'm running Sandra 2001. The system summary doesn't say anything, and I suspect the mobo info just lists the cas info in the memory, but not what it is actually running at. See here.


<< Do not expect significant performance either and also about the reboot problem, I sincerely doubt it'll go away with a new 256SODIMM. >>

Performance will be nearly identical I think, but I do believe it may help for the reboot. I've solved a few problems with my desktop by simply getting new ram.
 
How fast is my NEC RAM anyway?

Sticker on chip:
128MB T8 PC100-322-620

Printed on chip:
NEC Singapore
D45128841G5
-A10-9JF
0020EE609

There is this page which seems similar but not exactly the same.

It seems to me that this RAM is 10 ns. Do you agree?
 
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