Dual G5 2.5 GHz first impressions
I picked up my G5 yesterday after work from the FedEx facility where I live on the account that I was at work when they tried to deliver it. I have to say the anticipation to get off work and go pick it up was overwhelming and it was for very good reason. Quite simply, this thing kicks all kinds of ass. You have to understand that this is coming from a long time PC user/builder/gamer. This makes my second Mac on my home network along with a 17" flat screen iMac, an AMD 3200+ gaming PC and a HP laptop (for .NET development purposes). This machine marks my first venture into an Apple produced tower system and so far I'm very impressed. Because I still consider myself new to Apple this review may be a bit lacking but I will do the best I can.
NOISE: I know from my PC building experience that with processors running as hot as they do nowadays trying to cool them can be a daunting process, especially when you try to factor noise into the equation. No one wants a computer that sounds like the Red Baron himself landed in your living room

When I first got my iMac I was amazed at how quiet it ran compared to it's PC counterparts and Apple keeps with that low noise tradition with this dual G5 system. Even though it does employ a state of the art liquid cooling system, it still has to rely on some fan cooling in order to draw the heated air away from and out of the system which is to be expected from any system. I have to say, the thermo controlled fans are probably some of the best around and I would say that 99% of the time you hardly ever hear them. I will agree with Hotwire though that when they do spin up to full speed they are pretty loud, but the amount of time they do this for is a matter of seconds, not to mention that they don't always spin up to full speed. The thermo control sensor seems to be very well calibrated so as to accurately gauge how much heat is in the system and how much spin up is required in order to take care of the problem. I do have a feeling that this is application specific so I would be curious as to what the fans do when the machine is used for heavy rendering using apps like Maya and other high end 3D products.
APPLICATION PERFORMANCE: I'm glad that Apple has moved up to the new SATA interface for their hard drives and it shows. Application access from my 160 gig drive is quick and moving files from one place to another takes very little time. This machine's sole purpose will be for my digital photography (currently using a Canon EOS 10D) so the quick hard drive access times will definitely put to use while using iView Media Pro and Adobe Photoshop CS. In regards to application tasks, the Dual G5's make quick work of just about anything I throw at them.
VIDEO PERFORMANCE: I configured my machine with the highest end card Apple had available at the time which was the ATI Radeon 9800XT (R360 core) with 256 meg DDR memory. Seeing that I'm a pc gaming junkie I've come to expect certain things from video cards over the years and although I have yet to figure out how to run benchmarks comparable to 3DMark for the PC my initial outlook for the Mac version of the 9800 is positive. All I have done so far is run a couple of screensavers that depend on OpenGL support and compare how they run next to my iMac. The video performance on just those is worlds better than the iMac. I'm sure this is not only due to the video card but also the processing power of the dual G5s. However, I'm not satisfied with a few OpenGL based screesavers, they are hardly a benchmarking tool to the gaming enthusiast. I only have one Mac game in my collection and that is MOHAA (Medal of Honor Allied Assault). I will be installing that later on tonight and putting all the settings to max and see what happens. I highly anticipate that this system will cut through the graphics like knife through butter.
BUILD QUALITY: As far as I'm concerned the build quality of this unit is flawless. The case is a brushed aluminum work of art and everything fits perfectly. I have yet to find a defect and the case is very solid as computer cases go. I have had many bad pc case experiences in the past with sharp edges, flimsy construction, etc but this thing is solid as a rock. Kudos to Apple on a superior case design.
NEGATIVE REACTIONS: So, is it peferct? Well, I'm not one to say that anything is perfect, that is hard to achieve. I have noticed a couple odd things inside this version of the OS in the way of graphics hiccups. Nothing major but I think they should be pointed out. The one thing that I have noticed is that from time to time the drop shadow behind the fonts on the desktop will get broken up and the only way to fix them is to restart. Is this a big deal? Na, not at all, but it's curious seeing as how it never happened on my iMac. I've also noticed that sometimes in Apple Mail that even though there is no unread mail in one of my folders, that the application will indicate that there is. This is also another thing that requires a restart to correct.
Keep in mind, these two issues are so so so minor that I probably shouldn't even mention them. I'm really only bringing them to light so if anyone else experiences them, they will know that they aren't alone. The only thing that really is worth mentioning is the Applecare registration on these machines. If you have purchased the Applecare for these machines you may not be able to register them quite yet. My registration failed multiple times. When I contacted Apple they said that because these machines are so new that the serial numbers have not been entered into their system yet. They said it could take a week to ten days for them to get entered. Just warning up front if your registration fails.
Anyway, sorry this is so long, but I wanted to give you all my first impressions. I have mixed emotions about posting this review, although it gives you all something to look forward to, but considering all the positives it may make that wait all the more unbearable
Later all