Originally posted by: 0JK0
First off, is there a big differance between these two heatsink in the performance??
I noticed that CNPS7000A-AlCu has more compatibility then CNPS7000A-Cu ( it supports the socket 940 which CNPS7000A-Cu doesn't)
So which one is more worth to buy?? Anyone having some experiance with both, can you tell the differance between those 2, and if so is it considerable??
That's not true. The letter A in both cases specifies all the sockets the coolers support. For that matter, neither supports socket 940. They support 462, 478 and 754. If you can find the AlCU version at cheaper prices, then I would definately pick it up instead. In theory the Cu version should be faster as copper dissipates heat better. However, several reviews showed performance within 1-2*C at max load, which is rather insignificant considering other problems that the Cu version faces with weight distribution (and you have to take the Cu version off if you travel a lot). In some reviews the Alcu version was actually faster which is hard to explain. I have the Alcu version because I have to move my computer at least 2x a year on long trips and that is very inconvenient for me to take the cooler off every time. Otherwise if you can find the Cu version at a reasonable price, you can't go wrong. The coolers are quiet and very efficient and you'll be satisfied with both.
So, if you want the absolute best performance between the 2 go for Cu version.
If you do not want weight constraints and a slightly higher price for a slight decrease in temperatures go for the Alcu version.