Would need to know the make, model and age of the PSU, but most likely it is not going to be enough to handle the cards transient loads and if poor quality could end up endangering the system.
Would need to know the make, model and age of the PSU, but most likely it is not going to be enough to handle the cards transient loads and if poor quality could end up endangering the system.
your setup (and assume you ment a 1x8gb of 1600 ddr3 ram as that motherboard has only 2 slots from what i could find) would suggest around a 350w power usage, however you should probably increase that to around a 500-600w gaming supply as most cheap 400w would just get fried and to allow for future proofing your system.