In their evaluation, SearchDataCenter.com said that the DL980 G7 capped out almost every specification that you can, especially since it's starting price is under $37,000. They also liked the quick incorporation of the 8 core Intel Xeon 7500 processors in this system. They mention that the new servers this year better integrate into a virtual environment as well as boost virtual machine environments with improved I/O designs.
The article also mentioned theHP DL580 G7, and think that it will show up in a whole lot of data centers due to its versatility, power, and overall performance.
If you add in a recent Scale Up x86 article which Chris blogged about a few weeks ago, it isn't surprising that the conclusion is that 3 - 4 year old RISC systems can now consider a scale up x86 server and get similar hardware performance, scaling, and resiliency as they would have gotten on their last purchase, but at a much lower price.
Of course, if you wonder where this leaves UNIX, and especially HP-UX, they absolutely still make sense for mission critical workloads that need better availability, better raw performance, and better scaling. With a Converged Infrastructure, HP allows both of these environments to easily co-exist, something most other vendors seem to discourage.
Jacob Van Ewyk