Asrock Z77 Fatal1ty Performance Throttling

[manu2b]

^Yep, just seen that on xtremsystems...

But never heard of anyone on OCF having issues with E4 up to 5GHz (with SBs at least).

 

[agentsmith23]

D-Pak mosfets,they look like this.
View attachment 125477

The mosfets on my board definitely aren't those. You may not be able to read the numbers on the mosfets but some have 4935N RA29 and the others are 4927N RA41.

 

[Boulard83]

This is not really related to some mosfet brand. This is mostly a temperature issue when you have a WCed cpu. You end up with zero airflow for the memory and VRM's. Usually, the memory is OK if you dont push it really higher than spec, but the VRM's heat up quickly when OCing and at those clock ... you NEED VRM's cooling. NM the motherboard you have ... Even a 400+$ asus rampage V extreme will need VRM cooling at these clock.

 

[agentsmith23]

Yup I know that they will all require cooling to some extent. I am just curious if the MOSFETs on my board have any drawbacks like the ones one the Z77 Extreme4.

 

[wingman99]

It isn't exactly a problem but due to using the D-Pak mosfets they just can't overclock very well with higher voltages because once you hit a certain voltage the mosfets will over heat and throttle the CPU.

http://www.overclock.net/t/1271002/asrock-z77-vrm-phase-cooling-badly-needed

http://www.overclock.net/t/1333812/asrock-z77-extreme4-z77-extreme6-review

I did not see that in the links you posted.

 

[agentsmith23]

I remember reading that explanation somewhere. I am trying to get in touch with the guy who seems to have all of the tech knowledge on this stuff to see if I explained it correctly. I may have got it wrong.