Nvidia NFORCE 650I - Manual (Page 11)

Mainboard nForce 650i Ultra
7
FAN Headers: CPU FAN, C55 FAN
There are several fan headers available for cooling fans on the mainboard. Here describes
the two important ones only. The cooling fans play an important role in maintaining ambient
temperatures in your system. The CPUFAN header is attached with a CPU cooling fan. The
C55 FAN header is attached with the nForce SPP fan.
Pin Assignment
1 Control
2 Sense
3 PWR
1
CPU FAN
4 GND
Pin Assignment
1 Sense
2 +12V 1
C55 FAN
3 GND
Memory Installation: DIMM0/1/2/3
The nForce 650i Ultra mainboard provides four DIMM (Dual In-Line Memory Modules) sockets
which allow you to install 240-pin, unbuffered non-ECC, DDRII 800/ 667/ 533 SDRAMs. It also
supports Dual Channel Technology and allow you to install a total memory capacity of 8 GB.
Attention
It is recommended that to install memories which are
identical specifications (same timing specifications and same
DDR II speed) to achieve the best effects. It may cause the
failure of power-on or lower memory speed if installing
different type, SPD (series presence detects) memories.