This is an intel s5520ur board... e5620 cpus.
I just ugraded my hyper-v server 2008 r2 sp1...
It had 32 gb ram now it has 48 gb ram.
The thing is with 32gb ram the load was constant round 30% ( cpu load )
Now, only with the extra memory ( fully populated, 12x4Gb ), the load goes up to 90% , contantly.
memories are intel validated kingston ddr3s rdimm.
Any ideas on some bios settings perhaps?