I'd love to have it, but I can't afford it....yet.
Adds over $1,200 to the price vs. the cheapest Core 2 Duo on the Precision 390.

The only Dell models I can find offering this chip is the Precision 390 workstation and the Poweredge SC1430 & 1900 servers.

QUOTE
Dell to sell machines with quad-core Intel chip
Wed Nov 8, 12:10 PM ET

Dell Inc. (Nasdaq:DELL - news), the world's second-largest personal computer maker, said on Wednesday it started selling machines with microchips from Intel Corp. (Nasdaq:INTC - news) that have four processing cores, delivering faster performance and better energy efficiency.

Dell said it was offering Intel's quad-core version of its Xeon chip for server computers that run business networks, and a quad-core version of the Core 2 Extreme chip for high-end desktop computers used for heavy-duty computing like graphics and 3-D modeling.

The chips are among the most powerful in Intel's stable, and are built by sticking two dual-core chips together in a single package. Dell of Round Rock, Texas, is the No. 2 PC maker after Hewlett-Packard Co. (NYSE:HPQ - news).

Intel launched its quad-core chips ahead of schedule as it tries to stop market-share gains by rival Advanced Micro Devices Inc. (NYSE:AMD - news), which beat Intel to the punch with dual-core chips.

AMD plans to launch a quad-core chip by the middle of next year, and claims it will perform better than Intel's current offerings because all the cores will be on a single piece of silicon rather than two dual-cores stuck together.

Dell also announced on Wednesday its first business desktop computer with AMD processors. Dell earlier this year ended a long-standing exclusive relationship with Intel and began offering AMD processors in business server computers and consumer personal computers.