MP 1,1-5,1 Cpu Fan speed ramp up when ram upgrade!

[salmonoficial]

HI! I'm having a problem with my mac 4,1>5,1 flashed and with GOP enabled

I recently upgraded to 16GB of ram

The system is reading the memory fine but as son as the system tries to boot and post it ramps up the cpu fan. I have tested each memory one by one and they are fine, also the CPU was repasted a month ago, it is working fine.

Here is a video attached(when less than 16gb of ram the fan runs normally)

 

[tsialex]

RDIMM vs UDIMM? Can't use both at the same time.

 

[salmonoficial]

RDIMM vs UDIMM? Can't use both at the same time.

All Rams are UDimm

 

[salmonoficial]

RDIMM vs UDIMM? Can't use both at the same time.

Oh, I just checked and one of the sticks is PC3L (others are just PC3) can that be the problem?