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PC133 memory in Sony VAIO PCG-Z505LS?

S

Sam Goldwasser

Jan 1, 1970
0
Someone gave me a 256M module to try. It was recognized by the BIOS
with 384M total (which would be correct), but Windows ME just kept
rebooting.

I know that Sony only supports up to 256M in this laptop but I've heard
others claiming 384M. Or, is it a bus speed or standard issue that
makes it either incompatible, or requires a change to the CMOS or BIOS
upgrade?

Thanks.

--- sam | Sci.Electronics.Repair FAQ Mirror: http://repairfaq.ece.drexel.edu/
Repair | Main Table of Contents: http://repairfaq.ece.drexel.edu/REPAIR/
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T

Travis Jordan

Jan 1, 1970
0
Sam said:
Someone gave me a 256M module to try. It was recognized by the BIOS
with 384M total (which would be correct), but Windows ME just kept
rebooting.

Most PC133 memory is 168 pin 32x4. I believe you need a 144 pin module
16x8.
 
T

Travis Jordan

Jan 1, 1970
0
Travis said:
Most PC133 memory is 168 pin 32x4. I believe you need a 144 pin
module 16x8.

Or for 256mb, PC 133 is 64x4...when you need PC100 32x8.
 
S

Sam Goldwasser

Jan 1, 1970
0
Travis Jordan said:
Most PC133 memory is 168 pin 32x4. I believe you need a 144 pin module
16x8.

Well, it fits physically and as I said, seems to pass power on boot
diagnostics.

Quite possible that the organization isn't compatible though.

Thanks.

--- sam | Sci.Electronics.Repair FAQ Mirror: http://repairfaq.ece.drexel.edu/
Repair | Main Table of Contents: http://repairfaq.ece.drexel.edu/REPAIR/
+Lasers | Sam's Laser FAQ: http://repairfaq.ece.drexel.edu/sam/lasersam.htm
| Mirror Sites: http://repairfaq.ece.drexel.edu/REPAIR/F_mirror.html

Note: These links are hopefully temporary until we can sort out the excessive
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T

Travis Jordan

Jan 1, 1970
0
Sam said:
Well, it fits physically and as I said, seems to pass power on boot
diagnostics.

So it must be a 144 pin module. Does it have eight chips (double sided)
or four?

I agree that it is interesting that the memory is recognized by the
BIOS. Did you try removing the existing 128MB module and replacing it
with the 256MB module?
 
S

Sam Goldwasser

Jan 1, 1970
0
Travis Jordan said:
So it must be a 144 pin module. Does it have eight chips (double sided)
or four?

4 chips on each side.
I agree that it is interesting that the memory is recognized by the
BIOS. Did you try removing the existing 128MB module and replacing it
with the 256MB module?

Unfortunately, that requires almost total disassembly of the laptop since
it is on the *bottom* of the mainboard.

--- sam | Sci.Electronics.Repair FAQ Mirror: http://repairfaq.ece.drexel.edu/
Repair | Main Table of Contents: http://repairfaq.ece.drexel.edu/REPAIR/
+Lasers | Sam's Laser FAQ: http://repairfaq.ece.drexel.edu/sam/lasersam.htm
| Mirror Sites: http://repairfaq.ece.drexel.edu/REPAIR/F_mirror.html

Note: These links are hopefully temporary until we can sort out the excessive
traffic on Repairfaq.org.

Important: Anything sent to the email address in the message header above is
ignored unless my full name is included in the subject line. Or, you can
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T

Travis Jordan

Jan 1, 1970
0
Sam said:
Unfortunately, that requires almost total disassembly of the laptop
since it is on the *bottom* of the mainboard.

Ugh - I suppose the base memory may be soldered in, too, which would
make swapping it out completely impractical.

You can pick up a 128MB PC100 module for $35 plus $5 shipping if you
really feel you need the upgrade. I'll note that for most uses Windows
ME runs just fine on 128mb.

http://www.memorysuppliers.com/mic12pc144pi1.html

..
 
S

Sam Goldwasser

Jan 1, 1970
0
Travis Jordan said:
Ugh - I suppose the base memory may be soldered in, too, which would
make swapping it out completely impractical.

No, it's the same physical format and socketed but not worth the effort
to get to it.
You can pick up a 128MB PC100 module for $35 plus $5 shipping if you
really feel you need the upgrade. I'll note that for most uses Windows
ME runs just fine on 128mb.

I know. It's sort of a purity thing. I'd like it to be full. :)
This memory was already available.

Thanks.

--- sam | Sci.Electronics.Repair FAQ Mirror: http://repairfaq.ece.drexel.edu/
Repair | Main Table of Contents: http://repairfaq.ece.drexel.edu/REPAIR/
+Lasers | Sam's Laser FAQ: http://repairfaq.ece.drexel.edu/sam/lasersam.htm
| Mirror Sites: http://repairfaq.ece.drexel.edu/REPAIR/F_mirror.html

Note: These links are hopefully temporary until we can sort out the excessive
traffic on Repairfaq.org.

Important: Anything sent to the email address in the message header above is
ignored unless my full name is included in the subject line. Or, you can
contact me via the Feedback Form in the FAQs.
 
T

Travis Jordan

Jan 1, 1970
0
Sam said:
I know. It's sort of a purity thing. I'd like it to be full. :)
This memory was already available.

Oh yeah, I know about the 'sense of completeness' feeling <grin>.
 
J

jakdedert

Jan 1, 1970
0
Sam said:
Someone gave me a 256M module to try. It was recognized by the BIOS
with 384M total (which would be correct), but Windows ME just kept
rebooting.

I know that Sony only supports up to 256M in this laptop but I've
heard others claiming 384M. Or, is it a bus speed or standard issue
that
makes it either incompatible, or requires a change to the CMOS or BIOS
upgrade?
Try slowing it (memory addressing) down a bit in BIOS and see if that
works...or it 'could' be a bad stick. I've had memory test fine in POST,
which totally screwed up in operation. In any case, obtain and flash the
latest BIOS.

jak
 
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