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IBM's 5.0GHz Power6 processor
- Prrometheus 19y agoNo price? I'm looking for an extra Linux system to develop on.
- wmf 19y agohttp://www-03.ibm.com/systems/power/hardware/520/browse_linux.html http://www-03.ibm.com/systems/power/hardware/520/browse_linu... ~$5,500 per core. The blade is cheaper but you'd have to buy a chassis.
- keating 19y agoThis is kind of pointless without commensurate memory bandwidth. Those CPUs are just going to be waiting around doing nothing.
- wmf 19y agoThat's why Power6 has enormous memory bandwidth (~50 GB/s theoretical).
- keating 19y agoThe theoretical processor bandwidth is one thing; the actual throughput on motherboards with existing slow memory chips (DDR2-667 according to the specs page) is quite a different matter. This becomes a pretty big deal when you have that many cores all hammering on it at once. Divide by 32...
- wmf 19y agoSure, so maybe in reality you only get ~30 GB/s/socket, which is 15 GB/s/core. That's a lot more bandwidth than other systems have.
- keating 19y agoUnfortunately the limit is going to be in the chipsets for that DDR2-667 RAM. PC2 5300 -- that is not a wide bus, 5.3 GB/s. That's the bottleneck.