On 19/01/2005, at 8:48 AM, Peter Hinchliffe wrote:
On 18/01/2005, at 12:55 PM, bill parker wrote:
Can anyone help with this question?
I have been doing a throw out of old computers and salvaged bits from
some old 7200 machines.
Thus I have the RAM from a 7200/90. Will this be compatible with
the 7220/200? Both machines built in 1995.
I am obliged to use the latter machine because of its connection to a
piece of equipment in a lab. Bill
The 7200 and 7220 used different sorts or RAM. In fact, the wonderful
(!) 7220 was unique in the RAM it required: no other Mac used the same
sort. The 7200 used 168 pin 5V FP DIMMs, while the 7220 used 168 pin
3.3V EDO DIMMs. It is NOT possible to use your 7200 RAM in a 7220. It
doesn't do any damage - it just doesn't work. I know, after having
been supplied with the incorrect RAM on several occasions when trying
to upgrade clients' old 7220s well into the iMac age. Apple Australia
(who are now out of the upgrade business , BTW) have been the only
source of 7220-compatible RAM for some time. Now, not even they supply
it.
--
Peter Hinchliffe Apwin Computer Services
If you absolutely have to have RAM for the 7220 you will find that
Other World Computing
has the Ram listed in their eshop outlet . Note that they say the same
RAM is used in 4400 Macs
Go to this address ... make sure you get all the link
<http://eshop.macsales.com/MyOWC/Upgrades.cfm?
model=29&type=Memory&TI=%23TimeFormat%28Now%28%29%2C+&shoupgrds=Show+Upg
rades>
Bob
