Thanks Russ. One more question. The manual states the following;
"For proper system operation, if your system supports DDR-SDRAM DIMMs, the
DIMMs must be industry standard 184-pin, unbuffered PC 1600 200 Mhz- or
PC2100 266 Mhz-compliant, 2.5 volt DDR-SDRAM DIMMs. The DDR-SDRAM DIMMs must
support CAS latency 2 or 2.5. They must also contain the mandatory JEDEC SPD
information. DIMMs constructed with x4 SDRAM are not supported; the system will
not start using unsupported DIMMs."
I pretty much follow all of this except I'm not familiar with the terms
"JEDEC information" and "x4 SDRAM". These are not terms I usually see (or, at
least, notice) when shopping for ram. How do I know if a DIMM fits these
requirements?
Thanks again,
-Phil-
In a message dated 10/9/2008 10:28:40 AM Eastern Daylight Time,
[log in to unmask] writes:
Hi Phil,
Most PC's will run with RAM that is rated for a faster speed than the
recommended. Quite possibly when the system was built, the faster RAM was
easier to obtain due to market supply.
However, the speed at which the RAM is accessed is determined by the
processor and motherboard, not the RAM itself. Thus the system is not
running any faster with the faster RAM.
When adding memory, it is usually a good idea to match the RAM since they
share timing and data busses, and slight timing differences can lead to odd
behavior. So it would be best to matc the speed of what is already in there,
or replace the older one with all new memory that meets or exceeds the
specifications.
Russ Poffenberger
[log in to unmask]
-----Original Message-----
From: Personal Computer Hardware discussion List
[mailto:[log in to unmask]] On Behalf Of [log in to unmask]
Sent: Thursday, October 09, 2008 4:53 AM
To: [log in to unmask]
Subject: [PCBUILD] Compaq Evo D510 Small Form Factor ram
I bought this pc off lease and have been happy with it except for being a
bit slow somtimes. So I decided to up the ram. Research shows it takes up to
2
gig of DDR Synch Dram PC2100 (266-MHz) Non ECC. However, when I opened it
up,
it had one 256mb stick of pc3200 400MHz!
I wouldn't have thought this would be compatible but it works! Is it
actually running at the lower (266 MHz) speed? And any reason I shouldn't
stick
with the pc3200 when upgrading? (Found some pretty good deals on pc3200).
THX,
-Phil Williams-
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