Lower CPU temp after switch to Corsair PSU?

[limxdul]

So I switched from the pos Antec Earthwatts 500D (one by Delta cheaper quality, not the A+++++ rating from the one made by Seasonic) to a Corsair HX520W and suddenly my Q6600 is idle 4-5 C less than before, at 32C from 36/37C.

From

To

Besides less cables, everything else stayed the same with a general lack of cable management and same placement of the rig behind the desk, same fan speeds, etc.

Would that really warrant that much of a drop?

 

[Leman]

Winter approaching?
The fact that the fan is much closer to your heatsink now? Probably doesn't explain 5'C though.

 

[Nenu]

3+ possibilities.
Its drawing more hot air away from your CPU now and / or your old PSU generates a lot of electrical noise.
Or your old PSU injected a lot of its own heat into your PC case.

Less cables/obstructions can aid airflow too so that might help a bit.

 

[xdviper]

3+ possibilities.
Its drawing more hot air away from your CPU now and / or your old PSU generates a lot of electrical noise.
Or your old PSU injected a lot of its own heat into your PC case.

Less cables/obstructions can aid airflow too so that might help a bit.

Totally agree with this one.... Since the PSU fan right across the heatsink, it draws away more heat..

 

[LuckyNV]

People who own HX series can testify that the PSU does not shift much air at all so that is a very big drop, but I would also agree its entirely down to the bottom PSU fan sucking out extra heat directly from the CPU area (don't forget the motherboard VRMs there too)