Apple's Mac Pro - A True PowerMac Successor
by Anand Lal Shimpi on August 16, 2006 12:27 PM EST- Posted in
- Mac
Multitasking Performance - The Quad Core Advantage
We're almost at the end of the review and so far we've hardly shown any performance benefit thanks to quad cores; just about all of the benchmarks we've presented here today could be duplicated if you only had a single Xeon in the Mac Pro instead of two.
It seems that many multithreaded applications are specifically targeted at dual core systems, and scaling above and beyond two simultaneous (and CPU intensive) threads just isn't where it needs to be for four cores to make a big difference. With the trend in CPU architectures being to significantly ramp up the number of cores, software will follow, but for now truly taking advantage of four cores is much like the early days of dual core processors: you either need an application that is specifically designed to scale to four cores (e.g. CineBench/3D rendering), or you need to be a heavy multitasker.
We've already shown what the former can bring, but what about the latter? How much of a benefit do you gain from having four cores at your disposal? To find out we combined two of our benchmarks - the multithreaded CineBench 9.5 test and our Quicktime H.264 encoding test. We started the H.264 encode first and then started the CineBench rendering test; we reported scores for both.
With only two cores, the CineBench results between the PowerMac G5 2.5GHz and the Mac Pro 2.66GHz are reasonably close, with the Mac Pro only holding a < 6% advantage. The H.264 encoding performance is a bit more favorable to the Mac Pro, with the dual core 2.66GHz solution outperforming the G5 by 14%.
Enabling the remaining two cores on the Mac Pro however really changes the picture; the four core Mac Pro is 1.6x faster than the hypothetical two core version in CineBench and at the same time is 17% faster in the H.264 encoding test.
It's not too surprising to expect that the more CPU intensive tasks you run simultaneously, the more of a performance improvement you'll see with four cores vs. two. It's just like the early days of dual core CPUs; just wait until Apple throws two quad core Clovertowns in the Mac Pro, then we'll really start running out of things to do with them.
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DigitalFreak - Wednesday, August 16, 2006 - link
Is there a 64bit version of OS X for the Intel platform? I didn't think there was, considering that until now all of the Intel Macs have only had 32bit processors.kelmon - Thursday, August 17, 2006 - link
Depends on what you mean by 64-bit. OS X has, I believe, had a 64-bit UNIX layer since 10.3 (I don't think it was introduced with 10.4) but the only applications that can take advantage of this are command-line tools. Leopard will introduce 64-bit everywhere but I'm still struggling to find a reason why that will impact me in a good way. That said, the new Mac will have a 64-bit processor so that I can feel future-proof.Pirks - Wednesday, August 16, 2006 - link
Good question. I don't know, maybe OS X on those Mac Pros is patched to 64-bit or something.. if not than I should shut up and wait till Leopard.Snuffalufagus - Wednesday, August 16, 2006 - link
it should factor in at least a 25% - 35% discount code on the Dell :).I have never bought anything off the Dell site without getting a substantial discount from a current promotion.
trivik12 - Wednesday, August 16, 2006 - link
Does Dell offer 25-35% off for Dell Precision Workstation?MrPIppy - Wednesday, August 16, 2006 - link
The last generation of Power Mac G5s also had dual GigE ports: http://www.apple.com/powermac/specs.html">Apple's G5 specs pageOne difference though, the G5s (and the GigE G4s before them) used Broadcom 57xx chips for Ethernet, while the Mac Pro now uses an Intel 8254x chip.
Josh7289 - Wednesday, August 16, 2006 - link
But what is so good about Macs? Why would I want a Mac instead of a PC? What can a Mac offer me that a PC can't? I don't like trolling, but I seriously am asking these questions and want to know what the answers are.phaxmohdem - Wednesday, August 16, 2006 - link
I used to be a mac hater because All the macs I've ever used truely were Pieces of $h!t. Old single cpu G4 towers with no Hard Drive Space or RAM, and way too much student crap spread on them. HOWEVER recently I had the pleasure of using a REAL mac (Quad G5) for a video project, and it made me think of macs a little differently. Plenty fast, and stable. My biggest problems were learning all the new Mac hot keys and keyboard shortcuts.. but once you master those you'll fly on the mac. (Some of Macs shortcuts still seem pretty stupid and complex to me though).However I serioualy don't understand the keyboard and mouse that Apple gives their cusotomers... The new mighty mouse is an improvement, but still an uncomfortable POS to me. Ditto for the mushy fugly keyboard that is standard. I've found that a proper Logitech (or similar) Kybd/Mouse combo makes the mac experience feel 10x better. (One more side-gripe... OS X does not have adjustments for mouse acceleration, and for me the stock acceleration speeds are wretched and piss me off... Hopefully this is something to be updated in the next release of the OS)
So, moral of my story is... if you're going to Mac it up, do it right with proper input devices and some decent specs, and you'll have an enjoyable experience under OS X. I personally still choose Windows for its versatility w/ software and hardware... but to each his own.
Maury Markowitz - Thursday, August 17, 2006 - link
Agree. I find it somewhat ironic that the only MS products I really like are their keyboards, mice, and joysticks. What's particularily maddening is that Apple used to, years ago, make the best keyboard money could buy. Seriously, solid as a rock and typing feel you'd kill for. Now they peddle crap that looks nice. Not good.timelag - Thursday, August 17, 2006 - link
Apple used to, years ago, make the best keyboard money could buy.Ah yes, the extended keyboard II. Better even than the famous IBM and Sun keyboards of yore. If it weren't for my Kinesis (the One True ergo keyboard), I'd be using mine through an ADB to USB connector.