unknown processor, may be IBM

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isa-d



Joined: 16 Aug 2006
Posts: 2984
Location: Italy

PostPosted: Mon Aug 16, 2010 5:01 am    Post subject: unknown processor, may be IBM Reply with quote

Some time ago I bought this chip/processor but I'm not able to find nothing on it
seem to be used and it's a 2295 pin LGA, no costructor marking or copyright on it
seem to be an IBM for these two part number 44M0205 and 44M0195 but not information on Google
I thinking it's a CPU because it's very unusual a chipset in LGA package (standard it's a BGA package soldered on board)


any suggestions are welcome



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isa-d



Joined: 16 Aug 2006
Posts: 2984
Location: Italy

PostPosted: Wed Aug 18, 2010 11:04 am    Post subject: Reply with quote

I thinking the mistery of this chip is solved
I find an auction on Taobao with this photo



the left chip is a Power 6 processor with heatspreader



and the right chip is like mine

from Wikipedia
Each core has a 64 KB, four-way set-associative instruction cache and a 64 KB data cache of an eight-way set-associative design with a two-stage pipeline supporting two independent 32-bit reads or one 64-bit write per cycle.[7] Each core has semi-private 4 MiB unified L2 cache, where the cache is assigned a specific core, but the other has a fast access to it. The two cores share a 32 MiB L3 cache which is off die, using an 80 GB/s bus

I thinking the second chip is this cache
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doccybrown



Joined: 03 Oct 2005
Posts: 1736
Location: Germany

PostPosted: Wed Aug 18, 2010 3:20 pm    Post subject: Reply with quote

I think you are right.
The big MCM-version of Power4 has also external L3 cache-chips
in similar big packages. The "low-end" Power4 is a dual-chip module
(dualcore + L3-cache) as you know.
On Power5 the big cache-chip(s) is/are always on module.
Power6 low-end is off-chip.

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henriok



Joined: 30 Dec 2007
Posts: 157
Location: Gothenburg, Sweden

PostPosted: Thu Dec 19, 2013 6:09 pm    Post subject: Reply with quote

It's probably not the cache chip since no POWER6 offering used external cache chips on their own package. The combinations that used L3 cache had it mounted on the same substrate in dual-chip modules (1x POWER6 and 1x cache chip) and tri-chip modules (1x POWER6 and 2x cache chips).

I think it's a POWER6+ which came on organic LGAs. It even says "POWER" on the heat spreader, something I've only seen on other POWER processors (like POWER6, POWER and Blue Gene/Q). I've never seen a POWER6+ in person though.

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