I am going to do 3.46 hex swap into my 4,1 quad .. if i currently have 1066 ram can I install the cpu and upgrade the ram after or will that not work ?
According to Intel, the W3690 Xeon supports 1066MHz ram.
http://ark.intel.com/products/52586/Intel-Xeon-Processor-W3690-12M-Cache-3_46-GHz-6_40-GTs-Intel-QPI
Your current ram will most likely work just fine. You can upgrade to 1333MHz later on.