IBM 49G2856

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aduream



Joined: 30 Apr 2012
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PostPosted: Fri Sep 21, 2012 4:56 am    Post subject: IBM 49G2856 Reply with quote

What is this?intel 486OD£¿
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aduream



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PostPosted: Fri Sep 21, 2012 5:00 am    Post subject: Back Reply with quote

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Robev



Joined: 10 Mar 2006
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PostPosted: Fri Sep 21, 2012 5:05 am    Post subject: Reply with quote

This is a 80486DX2-50 overdrive processor

See here

http://www.cpu-world.com/info/IBM-parts.html

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aduream



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PostPosted: Fri Sep 21, 2012 6:18 am    Post subject: Reply with quote

49G2988¡£¡£¡£¡£¡£This is 2956
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aduream



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PostPosted: Fri Sep 21, 2012 6:25 am    Post subject: Reply with quote

Is it nothing to do with 2956?
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Neon_WA



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PostPosted: Fri Sep 21, 2012 7:20 am    Post subject: Reply with quote

by date code the only equivalent Intel ODP parts being made were

40MHz ODP486SX-20 A2 SZ675 9217 - 9240
50MHz ODP486SX-25 A2 SZ676 9217 - 9239

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Neon_WA



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PostPosted: Fri Sep 21, 2012 7:24 am    Post subject: Reply with quote

the alternative FRU for 92F0147 is 92F0079
alternative manufacturer part number to 49G2856 is 32G3374
so it is a ODP486DX-25 / ODP486SX-25 (technically the same but different naming)
but only SX version was being made at this time

so will be a 50MHz ODP486SX-25

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aduream



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PostPosted: Fri Sep 21, 2012 8:57 am    Post subject: Reply with quote

It would be good if it is a DX-25,Can not find ODPDX-25.never seen a photo of it
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Neon_WA



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PostPosted: Fri Sep 21, 2012 9:43 am    Post subject: Reply with quote

aduream wrote:
It would be good if it is a DX-25,Can not find ODPDX-25.never seen a photo of it

ODP486DX-25 was never an official part number & never used

even if it was used, there is no physical difference between a DX & SX over-drive

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