[SOLVED] "Fake" SMB Signal

[manuwieder]

Hi,
I have a problem with my motherboard. I bought a used Intel S5520HC Motherboard and two Intel Xeon X5650. Everything is fine, if I only have one CPU installed but if install the second CPU the PC doesnt boot anymore. Beep Code 1-5-4-4 . After googling a little, I found out that you have to connect the auxiliary power connector. But my PSU (EVGA 750 GQ) doesnt have it as well other consumer PSU. The only PSU that have that connector is the offical Intel PSU. This PSU old and very expensive and I dont see why I should buy some old PSU. So my question is: Have any one experience to fake such an the auxiliary power signal with an arduino or something or have you any other ideas?
Thanks

P.S. I know its not the offical way, but this is a fun project , to get deeper into computer, virtualization, ...

 

[Archaic59]

Hi,
I have a problem with my motherboard. I bought a used Intel S5520HC Motherboard and two Intel Xeon X5650. Everything is fine, if I only have one CPU installed but if install the second CPU the PC doesnt boot anymore. Beep Code 1-5-4-4 . After googling a little, I found out that you have to connect the auxiliary power connector. But my PSU (EVGA 750 GQ) doesnt have it as well other consumer PSU. The only PSU that have that connector is the offical Intel PSU. This PSU old and very expensive and I dont see why I should buy some old PSU. So my question is: Have any one experience to fake such an the auxiliary power signal with an arduino or something or have you any other ideas?
Thanks

P.S. I know its not the offical way, but this is a fun project , to get deeper into computer, virtualization, ...

EDIT:
According to EVGA website, the 750 GQ has two 8-pin(4+4) EPS cables, unless you lost one of them. They should be marked on the plugs for CPU.
EVGA 750 GQ

 

[RealBeast]

That board requires the 5 pin auxiliary power connector.

Here is the auxiliary power connector pinout from the PSU:

1 SMB_CLK_FP_PWR_R Orange
2 SMB_DAT_FP_PWR_R Black
3 SMB_ALRT_3_ESB_R Red
4 3.3 V SENSE- Yellow
5 3.3 V SENSE+ Green

It is non-ATX standard (Intel proprietary) design, and I doubt that you can "fake it."
There is a new 670W PSU on EBay that appears to work with that board based on Intel specs (the SC5600Base), HERE for $95 (80 plus shipping).