G5 slower than G4 in Xbenches?
I just saw the new mac-mini Xbench charts! Unbeliebable
Look athttp://www.macintouch.com/perfpack/comparison.html
If you look at the CPU and Thread bars the iMac G5 1,8 is slower than the G4 1,42 G4 mini! How is this possible? I checked my iMac with Xbench myself and i got 161! In terms of CPU and threads the G5 is slower than a G4! How can this be?
Look athttp://www.macintouch.com/perfpack/comparison.html
If you look at the CPU and Thread bars the iMac G5 1,8 is slower than the G4 1,42 G4 mini! How is this possible? I checked my iMac with Xbench myself and i got 161! In terms of CPU and threads the G5 is slower than a G4! How can this be?
Comments
I am surprised that people still bother with Xbench. The general consensus is that it is a junk of benchmark, and I think that results like that do nothing else than confirming it. And when was the last time it has been updated? 2003-10-06? Hmm...
(Sorry about the spelling)
It is, however, true that the G4 is a much better chip than it gets credit for being. I expect it to get a second wind when it gets an onboard memory controller, and its biggest bottleneck and obstacle to progress (MaxBus) is pulled off the motherboard.
Freescale's doing well with it, though. Don't look at the Hz, look at the Hz/watt, to see how much it's improved over the last year or so (it's already running at or near 12:1 relative to the bus, so there's not much point clocking it higher...). I'm a lot more optimistic about its future than I was two years ago.
Oh, and Xbench is wildly inconsistent. You'll get markedly different scores from different runs on the same machine. I wouldn't put much stock in any results that it yields.
Mike
http://www.xlr8yourmac.com/G5/8GB_RA....html#storytop
I didn't see a ram listing for the tests. Did I overlook it somewhere in the link comparing processors?
Originally posted by aircft.sys.spec.
Take a look at this article on G5 performance in relation to equiped ram. According to this article, a G5 with minimum ram (as they ship), can be up to 4 times slower than any other configuration.
http://www.xlr8yourmac.com/G5/8GB_RA....html#storytop
I didn't see a ram listing for the tests. Did I overlook it somewhere in the link comparing processors?
4GB looks as though it's a bit of a sweet-spot.
Originally posted by hardeeharhar
Most of this speed may be due to the fact that the mini is smaller, hence less time for signals to get from one place to another...
"If you change Apple's standard Energy Saver options to get "Highest" processor performance, the iMac G5 finally beats its cheaper siblings, but there must be some reason that's not the default, and clock speed alone should give the iMac a big advantage. In return for pushing the iMac, you're likely to get more fan noise at the very least."
It mentions how running the iMac on 'High" the performance will make the fan louder, but are there any other set-backs? Such as wearing the chip out earlier, or something like that? I know it uses more power....
just curious