[HECnet] My newest toy

[Mark Benson]

On 13 Jan 2013, at 16:04, Brian Schenkenberger, VAXman- wrote:

...but I don't BUY systems. ;)

You KNOW what I mean ;)

I have.   There's quite an air volume but I would hessitate to call it a
toaster oven. 

Okay try this comparison. Stick your hand behind a normal modern Intel PC. Now stick it behind a rx2600/zx6000. See what I mean. It's hot in comparison. It might be the flow is slower and hotter in a zx6000 but you can see where all that electrical energy is ending up :)

I'm not saying Itanium is inefficient as it has a LOT of raw CPU horsepower per Watt but I anm skeptical as to wether it's more efficient than a late Alpha on a per-MHz comparison. Both CPUs get very hot in operation. Both have a LOT of raw power for that draw and per MHz. It's not like comparing a Pentium 4 and an Alpha, for example.

I'm not in Florida. ;)

No, I know, You're in NY/NJ, I know what 'Sandy' was, 2 of my best friends live in Hoboken. I was using Florida as a comparison as a 'it's hot there most of the year' place. If you'd prefer I use Texas or Louisiana I can do ;)

With regards to performance, the VUPS.COM benchmark (which is probably wildly inaccurate on fast non-VAX hardware) considers my zx6000 (472 VUPs) to be 3 times as fast as my 500Mhz PWS500au (161 VUPs). Even so, that's probably one CPU only on the zx6000 so it's probably 6x faster if you multi-thread. Like I said, though, it's not that accurate on a fast VAX, I doubt it's accurate at all on non-VAX CPUs ;)

-- 

Mark Benson

http://DECtec.info
Twitter: @DECtecInfo
HECnet: STAR69::MARK

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