1000+ cfm any good? (pdf btw)
If it is being used on a v8 then you would get better results from buying a heatsink that is suited for i7 and not lower heat dump chips like socket 775. For example the Prolimatech Megahalem or Titan Fenrir. Changing to a better CPU cooler will make more of a difference than a fan upgrade, especially if you overclock your chip.
i7 has a large heat dump, as in, it produces a lot of heat quickly and so will need a cooler that can dissipate the heat as fast as it is produced which the v8 can not do since it is not made for i7. The temperature differences will vary from chip to chip but you will notice a substantial decrease in temperatures if you upgrade to the megahalem and have push/pull. You can also fit 38mm fans on it so you could get 2x deltas if you really wanted![]()
Putting fans in series rises only maximum pressure, not maximum airflow.But, a push-pull of 2 x 4000RPM = 8000RPM