Anthropy wrote:
Would a low end 8 core Nehalim be as fast or faster than an 8 core Xeon?
I would say yes, although I would need to get my hands on some official benchmarks. However, common sense would dictate that Apple would not release newer 8-Cores that perform "worse" overall than their previous 8-Cores.
Anthropy wrote:
Would a Quad 3.33 be faster than an 8 core 2.26?
That's a difficult yes/no question. Some of it depends on what you're doing. I wouldn't worry so much about the 3.33 being "faster". I would be more concerned about whether a comparable model would be "fast enough". If your colleague is using an older Xeon, then I'd suspect that a Nehalem will meet or beat his machine.
The VERY general rule of thumb when buying a new Mac is this: if there are three models with three different CPU speeds, get the middle model. The reasons are that the lowest model tends to be a transitional model to bridge the gap between the newer machines and the top end machines which preceded it. These low-end models are the machines that will be phased out first.
The differences between the low-end new models and the middle model have historically been appreciable enough to consider the middle model. However, the performance boost vs price ratio of the middle machines and top models have rarely justified the oft-marginal performance boost.
My MacPro is a 3Ghz. It was a top-line model at the time I bought it, but I wouldn't have gotten it without the special rebate being offered, which placed the 3G within $100 of the 2.66 model. Otherwise, I would have just gotten the 2.66. The low-end model at the time was a 2.0 Ghz--- but then there was some confusion since the the G5s which preceded these MacPros were clocking in at 2.5 and 2.7 Ghz. It didn't make sense to get a 2.0.
With that said, those I know who bought a 2.66 at the same time I got my 3G are not experiencing "worse" performance at all. From all I've gathered, there might be some hairline advantage with the 3G if video is involved with audio, but the 2.66 and 3G are pretty much neck-and-neck, performance-wise. Even if I had benchmarks, the resulting stats tend to use video games and not DAWs.
Okay-- enough hobbit babble.
Just compare prices on the new 2.66, 2.96, and 3.33 Quads and you will likely see greater price differences than you'll see in performance improvements.
The 2.66 Quad is $2499. The 3.33 Quad is $1500 more. The 2.96 is $2899.
See what I'm saying? Clock speed at some point becomes part placebo. Consider the difference between the 2.96 and 3.33 and this will afford you considerable extra RAM and extra HDs, not to mention Apple Care.
It could be just me, but the 3.33 feels like a waste of money.