CraigNS, The 1850 won't support the 7130M level processors. The fastest one it supports is the 3.8G Xeon Irwindale 2M R0 (Kit part number XF434). Let me know if you need anything else.
Hi, I'm trying to upgrade the CPU's in a Poweredge 1850 to two dual core Xeons.   I just updated the bios from A02 to A07.  The replacement cpus have an 8mb cache.  With the bios upgrade the poweredge has 2x2mb cache support.  I assume this will make the new cpus incompatable but I am not certain. The cpus I have for upgrade are 7130M 3200MP/8M/800      
CPU Cache Size