rolandf said:
The top-end machines seems nice, although not enough pre-installed memory. But what is not workstation like, are the hard-drives
Um, it's configurable with any amount of memory you like. Given Apple's markup on memory, I'd rather have less so I can load up on faster Crucial or other 3rd party, first tier memory. You can get low latency DDR2 from a good vendor for less than Apple's normal latency. If I were buying a quad core machine I wouldn't hobble it with normal high latency DDR2.
I'm not able to confirm that the new controller supports lower latency DDR2 but the iMac G5 and the Older G5s support DDR down to 2 CAS though they ship with CAS3.
Also, what's not workstation-like about Hitachi's 250GB and 500GB drives? These are the same drives in the xServe RAID.
Granted, I like the Maxtor 300GB with 16MB cache but those aren't terrible drives (I run the MaxLineIIIs in my XServe and Dell 1U and they smoke).
So, they don't have incredibly overprices SCSI drives or way overpriced Raptors.. they have fast, reliable, large SATA drives.
My only real complaint about drives is.. no hardware mirroring or striping. If you've got a good disk-to-disk backup system, this thing would scream with L1 RAID (it does double you chance of a volume failure after all).
I suppose I'd also like NCQ. It's SATA-150 which can have NCQ but I do believe NCQ is standard on SATA2-300.
Overall I love the new machines. It's like Tiger, polish everwhere.
Dual GigE you can aggregate, PCI-E, built in Airport wireless antenna....
howard said:
is a dual core 2ghz faster than a dual 2ghz? if so why?
Dual core can be faster because, the cores can snoop on each other's caches.. they can cooperate more efficiently...
Dual core can be slower because two cores now share a Front Side bus while dual processor machines generally have their own busses. This should be fairly uncommon though as the FSB has way more bandwidth than the memory bus.
If the code threads with a very low level of parallelism where the threads are dependent on the results of other threads, dual-core should be better.
If the threads are very memory intensive and very independent.. then dual processor may be faster.
These dual-cores do have an extra advantage. Not only are they dual core on a very fast FSB, they have twice the L2 cache of the old CPUs.