| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 3418.1 | | WJG::GUINEAU | | Thu Feb 01 1990 14:16 | 26 |
| Jeese Ed, I just soldered 2 meg into my 2620 last night! 5Meg total now!! And
Sculpt 3Dxl soaked up a good 3.5 meg of it in one gulp!
The parts are 414256-100. I ordered them from a place pointed to by a
recent note (look in the last 100 or so for one I entered on RAM). The place is
in New Jersey.
Cost was 230.00.
You need 16 chips.
I ended up with the 80ns parts so I decided to try the 2620 at 80ns timing
(it usually runs at 100ns). It worked (so far...)!
The difference was pretty noticable. A RAMSpeed program I have gave me:
Cycle time effective ram access speed
100ns 11.2 MHZ
80ns 13.8 MHZ
13.8/11.2 = 1.23 times faster or about 23% faster!
John
|
| 3418.2 | | WJG::GUINEAU | | Thu Feb 01 1990 14:18 | 10 |
|
> I ended up with the 80ns parts so I decided to try the 2620 at 80ns timing
> (it usually runs at 100ns). It worked (so far...)!
The 80 ns parts they shipped were marked 514256-80 @ $14.00 a piece.
John
|
| 3418.3 | Try Micro-processors Unlimited | AIMHI::DEROO | | Thu Feb 01 1990 14:57 | 17 |
| I don't know how they are for the chips you are looking for but my past
experience with
Micro-processors Unlimited
phone # 918-267-4961
has allways been that they have had what I wanted at the best price I
could find and they have allways shipped same day. In fact if you
called DEC Employeee Purchase looking for memory you would often be
refered to them.
Now that I have given them a reference watch them start to mess up.
Good luck.
Ken-
|
| 3418.4 | | LEDS::ACCIARDI | | Thu Feb 01 1990 15:11 | 10 |
|
Thanks John, Ken...
I just ordered 16 of the 80 nS parts from Corey at Microprocessors
Unlimited for $11.95 each (100 nS parts are $11.75).
They ship UPS 2nd day air; total cost: $198.25.
Ed.
|
| 3418.5 | | NSSG::SULLIVAN | Steven E. Sullivan | Fri Apr 27 1990 14:06 | 24 |
| this seems as good a place as any for this:
I visited Active Electronics in Westboro MA (they are a nationwide chain)
recently. I noiticed a flyer there about "Memory Mania" - a sale on memories.
These include all kinds of varities of ram and rom. Most are in rather large
(100 and up) quantities and for the more mundane varieties the price is only
"OK." A couple of things might make this interesting for some readers of this
conference:
1) it is a local dealer in many instances and many folks I know would prefer
to buy locally.
2) they have 1 meg X 4 DRAMS that allow the A3000 to have 16 meg on the
motherboard. This latter point is what caught me. The 1 meg X 4 chips are
80ns cmos zips and I think they are also static column mode. The price in
quantitys of 10 or more 71.95 each. The A3000 upgrades in groups of 8
chips - 4 meg hunks.
I also noted that Active is now selling AMP (the better variety) zip
sockets. This is for any of us who feel uncomfortable soldering directly
on those sensitive little rams! They were listing for $1.80 each. That DOES
seem steep and they may be available elsewhere for less.
-SES
|