Linked by Thom Holwerda on Thu 26th Aug 2010 23:24 UTC
IBM At the Hot Chips 2010 conference, IBM announced their upcoming z196 CPU, which is really, really fast. How fast? Fastest chip in the world fast. Intended for Z-series mainframe computers, the Z196 has a clock speed of 5.2GHz. Measuring just 512 square millimeters, the Z196 is fabricated on 45nm PD SOI technology, and on its surface contains almost one and a half billion transistors. My... Processor is bigger than yours.
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Why would I need to read a 3rd party article, by a non-technical writer, when I was getting the specs directly from IBM?

Do you guys even comprehend the impossibility of a single chip at that 45nm process with those cache sizes?

See the specs from IBM directly, or if you need a 3rd party check wikipedia:

A 16 MB of L1 would be idiotic, since it could actually make things like context switches very costly with so much local data to flush in/out.

First of all, remember that Mainframes are designed to push I/O ops at unparalleled speeds. Their main focus forever was I/O performance, not processing speeds. That is why mainframe processors are not used in their super-computers, they are just not designed for raw calculations. Add to that, these machines are bundled with with some fast storage units - and you get ultra low wait times for data.
I've actually seen how these machines perform, Oracle RAC isn't a contender when comparing the I/O heavy DB operation performance these machines can achieve with DB2.

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