ASUS Maximus Formula SE

[cadaveca]

well, you must undersatnd that by default the board only uses half-phases, not full, so possibly without driver, you can never get proper load-balance. But not to fear...I have not isntalled drivers from ASUS on most recent board...just simply used Intel's .inf's for chipset and SB, as ASUS driver CD's have been lacking for eons... even just using Intel drivers, I still have the problem. It could simply be something caused by X38 driver...I did not see this problem when I played with X38 and DDR3 tho(was not an asus board tho, so no EPU..)


To be honest, dealing with the problem by buying new cpu, or getting different board, is the only solution. It's a low-level driver issue caused by hardware implementation...change the hardware, and the driver is not a problem.

PWM = Pulse width modulation....meaning the voltage supplied to cpu from PSU is not constant..it's pulsed. It could be possible that due to how current is "shared" bewteen phases, and how this is regulated that is the issue...EPU could NOT be the problem, but maybe problem lay in PWM, and reading given back to EPU by PWM created teh loops...i dunno. I lack the expertise in this area...too many SMDs in circuit that do not have proper documentation for the public.

[jonny_ftm]

well, you must undersatnd that by default the board only uses half-phases, not full, so possibly without driver, you can never get proper load-balance. But not to fear...I have not isntalled drivers from ASUS on most recent board...just simply used Intel's .inf's for chipset and SB, as ASUS driver CD's have been lacking for eons... even just using Intel drivers, I still have the problem. It could simply be something caused by X38 driver...I did not see this problem when I played with X38 and DDR3 tho(was not an asus board tho, so no EPU..)


To be honest, dealing with the problem by buying new cpu, or getting different board, is the only solution. It's a low-level driver issue caused by hardware implementation...change the hardware, and the driver is not a problem.

PWM = Pulse width modulation....meaning the voltage supplied to cpu from PSU is not constant..it's pulsed. It could be possible that due to how current is "shared" bewteen phases, and how this is regulated that is the issue...EPU could NOT be the problem, but maybe problem lay in PWM, and reading given back to EPU by PWM created teh loops...i dunno. I lack the expertise in this area...too many SMDs in circuit that do not have proper documentation for the public.

I have also one question. Do you think the maximum amperage on one +12v rail of the PSU can be the cause. On new PSUs, there are many 12v rails, usually limited to 18A max per rail on the 750W models, and up to 20-40A on the +1000W models. I personally don't have any idea how many amps would drain an OCed Q6600, let's say at 3.8GHz and 1.6 vcore.

As the +12v is also used for motherboard input, it can be the combination of highly OCed NB/motherboard added to the extreme OC of a quadcore, would yield a high amperange demand on the +12v rails. As new motherboards are much more current demanding than old ones, could be the explanation?

Would be interesting to test with stronger PSU on this board to see if the issue stops