IBM's new power6 more cores tiny up in GHz
Wednesday Oct 08, 2008
IBM announced new power6 Quad-core, but it won't be avail until late November 21st? Wow that is really pre-announcing a long way ahead.
Let's cut through some of the over-marketing-hype...
- IBM's new Power 560 is essentially half a p570. IBM p560 only supports 3.6GHz Power6, which is ~25% less GHz than p570 at 4.7GHz.
- IBM p560 is the same building block chassis but only scales to 2 building blocks (8RU) instead of 4 (16RU).
- IBM's QCM (Quad Core module using 2 x Power6 dual core chips), yes they just glued two chips into a module, IBM is slowly working toward quad-core chips.
- Most importantly, new QCM requires important trade off in memory capacity. Memory slots are housed on the processor cards, so increasing the number of processors on each card reduces the amount of memory per processor. This REQUIRES installing MUCH MORE expensive, higher density memory dimms.
- IBM again plays games when talking about old Sun systems (V490) to un-released IBM servers. Shame! IBM avoids any comparison to Sun CMT - because they would lose and in fact, people are replacing p570 with CMT worldwide.
- IBM uses max watts for site planning guides instead of actually measuring power,
because they know that Sun have more configurable systems than IBM and a lot more expansion possibilities, so of course we have more headroom for future wattage growth if someone want a bit config. IBM why are you so very scared of real measured data? Truth hurts?
Warning SPEC & SAP disclosure statement omissions on IBM.com?
The following pages list performance, but they seem to do it in a way without benchmark disclosure statements, so SPEC members who always hound me when I miss a comma in a 200 word disclosure statements should have a heyday as IBM doesn't even put the disclosure statement on an Official ibm.com website!
http://www-03.ibm.com/systems/power/hardware/570/perfdata.html
http://www-03.ibm.com/systems/power/hardware/560/perfdata.html











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