Hi,
The z600 series of workstations support
Intel Xeon Processor X5570 QC 2.93 GHz, 95W, 8M cache, 6.40GT/s QPI, DDR3 1333 MHz, HT, Turbo
Intel Xeon Processor X5560 QC 2.80 GHz, 95W, 8M cache, 6.40GT/s QPI, DDR3 1333 MHz, HT, Turbo
Intel Xeon Processor X5550 QC 2.66 GHz, 95W, 8M cache, 6.40GT/s QPI, DDR3 1333 MHz, HT, Turbo
Intel Xeon Processor E5540 QC 2.53 GHz, 80W, 8M cache, 5.86GT/s QPI, DDR3 1066 MHz, HT, Turbo
Intel Xeon Processor E5530 QC 2.40 GHz, 80W, 8M cache, 5.86GT/s QPI, DDR3 1066 MHz, HT, Turbo
Intel Xeon Processor E5520 QC 2.26 GHz, 80W, 8M cache, 5.86GT/s QPI, DDR3 1066 MHz, HT, Turbo
Intel Xeon Processor E5506 QC 2.13 GHz, 80W, 4M cache, 4.80GT/s QPI, DDR3 800 MHz
Intel Xeon Processor E5504 QC 2.00 GHz, 80W, 4M cache, 4.80GT/s QPI, DDR3 800 MHz
Looks like they support CPU's with 80W to 95W. The Intel Xeon W3550 has TDP 130W .
http://ark.intel.com/products/39720/Intel-Xeon-Processor-W3550-8M-Cache-3_06-GHz-4_80-GTs-Intel-QPI
I don't think this is going to work.
Regards.