Quote Originally Posted by Brother Esau View Post
How does that 8 phase Digital PWM stack up next to the 4 phase analog PWM on the IP35 Pro? Quad Core related question.
Before I answer that I am going to comment on something Raja said over at TTR hope he doesn't mind me borrowing his words but I think he has it just right so no need to say it again.

I still think these Digital PWM's are not robust per device as conventional PWM circuits, they seem to need 2 extra devices in circuit to equal the regular switching designs, ie 8 phase digital is roughly equal to 6 phase conventional - in terms of load handling, if that.
However Digital 8 vs Analogue 4 no comparison.

Not to take anything away from the IP35 Pro as it is a fabulous board but imo the IP35 Pro's PWM is fine for dual cores & although it can flow enough juice for a Quad (good old analogue just wont give up) is IMO overstressed.

The IP's PWM/heatsink will easily hit 100oC + passively cooled running Prime on a Quad over say 3.6GHz & only just drops to the 70's properly air cooled.

The DFI has IMO the daddy Rolls Royce of PWM's coupled together with its decent heatsink provides very smooth power that only tops 70oC passively cooled running Prime @ 3.8GHz on a Q6600 (Its the best PWM/Heatsink I have ever come across). I have air flowing over my PWM & NB & they both run in the 40's under full load.

The benefit of having a cool PWM is there is a lot less heat soak/transfer into the board & therefore board temps & other devices around the PWM area including the CPU socket will run cooler & will hopefully allow more overclocking

CN