Is it required for PCI-E 16X card to have extra power
Apparently, PCI-E 16X card needs a lot of power. So I saw the mobo makers usually put a extra power slot on it (4pin), it is like intel 945p or nForce4 SLI ect. The Geforce 6150 all-in-one mobo looks really attractive, and it support PCI-E 16X, hower there is no extra power slot for PCI-e 16X. Will it cause the problems when people want to upgrate to a seperat graphic card instead of onboard Geforce 6150. Thanks
There are two 4 pin variations with regards to extra power that you refer to.
First, there is the 12v 4 pin connector that orginated with the Prescott and still exists today in pentium motherboards. Recently AMD motherboards have started to use this extra 4 pin connector. The connector i speak of is perfectly square and was designed to supply extra power to the processor. I think you are confusing this connector with the connector described below.
Second, there is the 12v 4 pin molex connector commonly found on motherboards with SLI. This connector is rectangular and was designed to pump extra power to the 2nd PCI-E x16 slot. Most single PCI-E x16 slot solutions do NOT have this connector. Most (but not all) SLI boards have this connector.
Niether design is more stable than the other.