G-Rex?

[neofree]

Below is an ad for amiga 1200, bppc and g-rex.  what does he mean by motherboard doesnt like g-rex?  

   - A1200 Power Tower w/ A1200 MoBo, Original Floppy
   coverted for tower and 3.1 ROMS (internal PS to
   MoBo connector has been lost)
   - A1200 Phase5 PPC 603 w/ 060 and 32 megs. mem
   - G=Rex PCI Bus Board w/ 10/100 NIC & Voodoo 3
   ** I have Drivers and docs for all above listed items **
  **All Items work perfectly, but Rev. of Motherboard**
   **does not like G-Rex.**

[neofree]

OK so if I skip on the G-Rex, I have another question...

He said he made a mistake, it's an 040, so it's also not a 240MHZ PPC.  These run really hot don't they?  If I get one and plan to get a BVision, will that be an OK plan or are they just too hot?  I dont mind putting extra cooling on it.