Astute readers noticed some Apple store downtime earlier this morning. While I was hoping for something soaked in Unicorn tears, I guess I'll settle for a drool-worthy Xserve update.

The rumors were right on target, and the new Xserve sports Intel's "Nehalem" Xeon processor (just like the recent Mac Pro refresh), which Apple is touting as offering "twice the performance" when compared to last year's model.*

* There is always an asterisk in these types of comparison so please read the fine print before taking any marketing slogans as gospel.

The new Xserve systems look really hot. Check out these specs for the $2999US base model:

• a single 2.26 GHz Quad-Core Xeon 5500 series processor with 8MB of fully shared L3 cache
• 3GB of 1066 MHz DDR3 ECC RAM
• a single 160GB 7200 rpm SATA Apple Drive Module
• dual Gigabit Ethernet on-board
• two PCI Express 2.0 x16 expansion slots
• NVIDIA GeForce GT 120 256 MB with Mini DisplayPort output
• two FireWire® 800 and three USB 2.0 ports

And of course, the requisite unlimited client license for Mac OS X Server version 10.5 Leopard.

If the standard offerings aren't powerful enough, the Xserve can be customized to include two Quad-Core Xeon's running at 2.26, 2.66 or 2.93 GHz. An 8-core 2.26 Xserve configure like the base system runs $3599US.

The new Xserve also offers an optional 128-GB SSD boot drive, as well as options for RAID cards, and dual or quad channel 4Gb Fibre channel cards.

This generation of chipsets is more energy efficient and Apple is touting the newest Xserve as the "greenest ever."

The new Xserve is available now at Apple.com and at your local Apple store or authorized dealer.

Today's new hardware announcement refreshed the Mac mini and iMac lines, and at long last, the Mac Pro was also given some love. In the 14 months since the last Mac Pro refresh there have been some significant hardware changes within the microprocessor world and within Apple's own line. The result meant that the Mac Pro, while still a beast, wasn't as cutting-edge as it has been in the past. Let's look at the update and see if that story has changed.


Processor and Chipset

The big news with this Mac Pro update is the Quad-Core Intel Xeon "Nehalem" processor. Intel's "Nehalem" is the latest breakthrough in Intel's 45nm space. The Mac Pro may actually be the first commercially available computer that uses the Nehalem-based Intel Xeon. The base configuration is a Quad-Core 2.66 Ghz Intel Xeon, but you can configure a Mac Pro with two Quad-Core 2.93 Ghz Xeons, effectively meaning 8 cores. As far as I know, the 16-core option for the latest Xeon won't be available until later this year. To put it another way, this is bleeding edge.

Looking at Apple's benchmarks (obviously, the independent tests that are sure to come will probably give a more accurate overall picture), the 8-Core 2.93 Nehalem-based Xeon processor offers some significant speed increases over last generation's 8-Core Xeon 3.2 Ghz.

Aside from pure processor speed, the new chipsets include an integrated memory controller, Intel's QuickPath, Turbo Boost and Hyper-Threading technologies. The Hyper-Threading implementation is especially interesting because it means you can run two threads on each core, effectively meaning your Mac can recognize 16 virtual cores on an 8-core system. This is a virtualization nut's dream.

On the memory front, a single Quad-Core Mac Pro can take up to 8 GB of RAM. If you do the 8-core option, that capacity expands to 32 GB.

Graphics and Displays

Last October, Apple committed itself to using DisplayPort technology for its products and displays. The unfortunate side-effect of that decision meant that users wanting a Mac Pro to go with that sexy new 24" Cinema Display were out of luck, because those displays require a Mini DisplayPort, something the previous generation Mac Pros just didn't support. No more. The new Mac Pro features both Mini DisplayPort and a dual-link DVI port, so you can hook up both a 30" Cinema Display and that new 24" LED beauty.

Apple is touting the new Mac Pro as having "the fastest Mac graphics ever". Indeed, the stock NVIDIA GeForce GT 120 (note, NVIDIA changed the naming convention of its graphics chipsets recently, but the GT 120 is based on the 9500GT chipset) with 512 MB of GDDR3 RAM is a pretty decent start, especially for video professionals. You can customize the Mac Pro to include the ATI Radeon HD 4870 with 512MB of GDDR5 memory, which is one of the latest and greatest cards available from ATI.

You can put in up to four GT 120 cards in the Mac Pro, meaning you can drive as many as 8 displays off the Mac Pro. That's the video setup of my dreams.

MacRumors.com's Arnold Kim writes that a few of the participants in his website's forum are eagerly awaiting the arrival on March 29 of a new Nehalem-based Intel Xeon processor -- suitable for use in the fastest Mac Pro desktops.

What do these new chips bring to the table? Raw power: TechRadar found that 2.8GHz Nehalem Xeon processors scored a SPECfp benchmark of 160, compared to the current Penryn-based Xeon processors that scored just 90.

Kim makes a good point -- part of the reason we haven't seen much movement lately in the Mac Pro line is because of the popularity of Apple's notebook lines: something Apple admitted in its first-quarter conference call on January 21. What that means for the final release date of any new Mac Pro models is anyone's guess.

Once the processors are available for sale, anecdotal evidence would suggest it's just a matter of time before Apple includes them in new Mac Pro models. That's not a guarantee, though.

Last year, when Apple last updated the Mac Pro line, they offered a single highly-customizable build-to-order option, rather than a range of trim levels.

[Via IGM.]