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Vegeta
Joined: 13 Apr 2013
Posts: 7049
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 Posted: Sun Apr 21, 2019 7:28 am Post subject: Vegeta April 2019 10 UNISYS & ALPHA |
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You can shipping worldwide $8 < 250g, $14 < 500g, $24 < 1kg, $38 < 2kg; AVICC as cost, or postpone until the next sales.
Payment with PayPal or ChipPay by AVICC.
1x Compaq Alpha 21264C IB21264C-1000VGN 1000Mhz CLGA-675 micro chip on corner; - $15
SOLD Compaq Alpha 21264C IB21264C-1000WGN 1000Mhz CLGA-675 uncommon; - $20 blue mark removed with ethanol pixelmanca
1x Compaq Alpha 21264C IB21264C-1225TPN 1225Mhz CLGA-675 micro chip on corner; - $15
SOLD Compaq Alpha 21264C IB21264C-1250TPN 1250MHz CLGA-675 micro chip on corner; - $15 akva-5
SOLD UNISYS 32R7896 CMOS CPU from a UNISYS mainframe CLGA-1593 + IBM93 32R3818 system chip CLGA-1591; - 65$ for rare set pixelmanca
quality scans available:
https://i.ibb.co/F42FJQm/00726.jpg
https://i.ibb.co/1KzJYky/00727.jpg
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Last edited by Vegeta on Mon Apr 22, 2019 3:01 am; edited 3 times in total |
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isa-d
Joined: 16 Aug 2006
Posts: 2984
Location: Italy
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| Posted: Sun Apr 21, 2019 8:12 am Post subject: |
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| Do you have any more information about Unisys Clearpath cpu set? |
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Vegeta
Joined: 13 Apr 2013
Posts: 7049
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| Posted: Sun Apr 21, 2019 8:18 am Post subject: |
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| isa-d wrote: | | Do you have any more information about Unisys Clearpath cpu set? |
No
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akva-5
Joined: 19 Feb 2019
Posts: 131
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| Posted: Sun Apr 21, 2019 11:42 am Post subject: |
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| 1x Compaq Alpha 21264C IB21264C-1250TPN 1250MHz CLGA-675 micro chip on corner; - $15 for me, please |
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pixelmanca
Joined: 03 Oct 2018
Posts: 316
Location: USA
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| Posted: Sun Apr 21, 2019 10:22 pm Post subject: |
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1x UNISYS 32R7896 CMOS CPU from a UNISYS mainframe CLGA-1593 + IBM93 32R3818 system chip CLGA-1591; - 65$ for rare set
For me please... 
And a question... on the 'Compaq Alpha 21264C IB21264C-1000WGN 1000Mhz CLGA-675 uncommon; - $20' is the blue mark on the bottom right corner of the ceramic permanent, or can it be removed with a solvent? If you can remove it with some Isopropyl or Acetone then I'll buy that one too, but if it's a permanent blue spot that can't be removed than I'll pass on it... please let me know, thanks.
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while the error of age is to believe that experience is a substitute for intelligence"
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Vegeta
Joined: 13 Apr 2013
Posts: 7049
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| Posted: Mon Apr 22, 2019 3:02 am Post subject: |
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| pixelmanca wrote: | 1x UNISYS 32R7896 CMOS CPU from a UNISYS mainframe CLGA-1593 + IBM93 32R3818 system chip CLGA-1591; - 65$ for rare set
For me please...
And a question... on the 'Compaq Alpha 21264C IB21264C-1000WGN 1000Mhz CLGA-675 uncommon; - $20' is the blue mark on the bottom right corner of the ceramic permanent, or can it be removed with a solvent? If you can remove it with some Isopropyl or Acetone then I'll buy that one too, but if it's a permanent blue spot that can't be removed than I'll pass on it... please let me know, thanks. |
blue mark removed with ethanol
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pixelmanca
Joined: 03 Oct 2018
Posts: 316
Location: USA
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| Posted: Mon Apr 22, 2019 5:00 am Post subject: |
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Thank you Dmitriy...
It's funny that these were put on sale yesterday, because I just got one recently and I decided to de-lid it the other day and then wanted another one once I saw how cool it looked inside.
It took a long time to dig all of the silicon out from the channel around the very heavy heat sink insert and the metal base frame that's attached to the ceramic. Then it took a long time to heat it up enough to get the silicon to soften up enough to get the heatsink insert to come out of its metal frame.
When I finally got the heat sink insert to come out of its frame, I was very surprised to see that it has an IBM ceramic module inside. I wasn't aware that IBM had manufactured these for Compaq...
Then it took a couple of hours to get all of the silicon glue off of the heatsink insert and its metal frame around the ceramic module, but it was well worth it because the heatsink insert itself looks really cool on the underside, due to how it's machined. It's very iridescent when held at certain angles to the light, although it doesn't really come across in the picture.
I thought I'd post a picture of it here, since I doubt many people have ever seen the inside of one of these...
(Click on the pictures to see high resolution versions.)
Here's a picture of one of these showing the frame removed from the ceramic plate. This one didn't have a QR code on it:
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"The error of youth is to believe that intelligence is a substitute for experience,
while the error of age is to believe that experience is a substitute for intelligence"
- Lyman Bryson
Last edited by pixelmanca on Wed Mar 04, 2020 3:20 pm; edited 8 times in total |
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Bator
Joined: 28 Oct 2013
Posts: 1285
Location: Russia / Yakutia & Siberia
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| Posted: Mon Apr 22, 2019 7:13 am Post subject: |
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pixelmanca, You have done a great job!
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pixelmanca
Joined: 03 Oct 2018
Posts: 316
Location: USA
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| Posted: Mon Apr 22, 2019 1:41 pm Post subject: |
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| Baator wrote: | | pixelmanca, You have done a great job! |
Thanks for the compliment Baator...
I just wish I hadn't taken a few small gouges out of the right side of the metal frame and slightly bent some parts of the right side of the metal frame as well. I was able to mostly straighten the frame again with some needle nosed pliers and you can see what I mean by looking at the right right side of metal frame in the picture. That happened when I pried the heatsink insert out of the frame with a small screwdriver. 
But I don't know another way to get it to come out, besides prying on it with a small screwdriver, because the silicon seal softens up after heating it for a long time, but it still needs some pressure applied to release things from it.
Maybe when I get this next one I'll try again and use something that's wider and not quite as blunt to pry the heatsink insert out of the frame. Unfortunately since there's no guidebook for "tearing down" old technology, I'm left to my imagination and to the trial and error approach LOL...
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"The error of youth is to believe that intelligence is a substitute for experience,
while the error of age is to believe that experience is a substitute for intelligence"
- Lyman Bryson |
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Glory_Cloud
Joined: 24 Jul 2010
Posts: 2942
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| Posted: Mon Apr 22, 2019 1:57 pm Post subject: |
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Pixelmanca - I have (100+) Compaq Alpha 21264C IB21264C-1000VGN's.
If you would like some to practice on, please just let me know.  |
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isa-d
Joined: 16 Aug 2006
Posts: 2984
Location: Italy
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| Posted: Mon Apr 22, 2019 3:02 pm Post subject: |
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| ... I had the same problem |
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Robev
Joined: 10 Mar 2006
Posts: 3693
Location: New Zealand
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| Posted: Tue Apr 23, 2019 1:45 am Post subject: |
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You could try using a razor blade that would cut the silicon as you pried the top off and should not need so much pressure
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pixelmanca
Joined: 03 Oct 2018
Posts: 316
Location: USA
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| Posted: Sat May 04, 2019 11:48 am Post subject: |
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| Robev wrote: | | You could try using a razor blade that would cut the silicon as you pried the top off and should not need so much pressure |
I had already removed all of the silicon from the channel around the heatsink prior to heating it up. I appreciate the advice, but that wouldn't work because there's no way to get a razor blade under the heatsink insert to get it to come out, if you could do that the insert would already be lifted up enough to come out on its own...
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"The error of youth is to believe that intelligence is a substitute for experience,
while the error of age is to believe that experience is a substitute for intelligence"
- Lyman Bryson |
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stamasd
Joined: 05 Jun 2014
Posts: 1311
Location: Connecticut
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| Posted: Sat May 04, 2019 12:20 pm Post subject: |
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| pixelmanca wrote: | | Robev wrote: | | You could try using a razor blade that would cut the silicon as you pried the top off and should not need so much pressure |
I had already removed all of the silicon from the channel around the heatsink prior to heating it up. I appreciate the advice, but that wouldn't work because there's no way to get a razor blade under the heatsink insert to get it to come out, if you could do that the insert would already be lifted up enough to come out on its own... |
Perhaps not a razor blade as it comes out of the package because the steel is hardened and if you bend it, it will break. But if you heat the blade to red heat and then let it cool slowly it will soften and allow you to bend it to shape; it will even bend by itself when pushed into a narrow, curved channel. Yes it will not cut as well as before, but silicone glue shouldn't pose much resistance. BTW this would work better with double-edged blades rather than single-edged because they're usually much thinner. |
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