Vorneweg I must say that the purchase of an AIO water cooling is a matter of luck as you can with one and the same product time lucky and unlucky times.
When profesionally set out and quality of the parts and the brackets there are significant differences between the manufacturers.
The Zalman comes from Asetek (as before the Corsair also) and the current Corsair of CoolIT.
I had made, both pumps run before installation times with 12V to see what annoys pump with rattle and gurgle and which are not.
The Corsair was seconds later still, the Zalman contrast rattled merrily. The fans of both models are too noisy (although the Corsair gets me 5 stars) and I recommend a Noctua NF-F12PWM.
I have the fans but "blowing" thus assembled the air better through the fins goes.
When attaching Corsair gets the next selling point because it has no complicated mounting one must cobble together and manages only for AMD Socket without backplate
since the original holder is used. The assembly of the Corsair is therefore playing slightly out of hand.
From the cooler and hoses are both equally good but the Corsair has thicker hoses, which can be for the cooling performance of course better.
The Zalman seated In the copper base plate which on the CPU is also back as the plate is round and does not fully cover the surface of the CPU. In addition, many sunken screw holes are present which is also not so nice.
The base plate of the Corsair-pump is Square, which flow to design a CPU.
Both are pre-treated at the factory with thermal grease.
Average temperature in the Windows mode a [email protected] CPU - 20 ° C (with my configuration and Enclosures and Fans)
The Corsair is about 10 cheaper, superior in all points of Zalman and thus a clear purchase order!