Quicksilver Fans replacement
You’ll find hereafter some results of tests made with a QuickSilver 733 upgraded with a RevB board and a dual 800 CPU daughter board. Some test were made also on a QS Server with RevA and dual 800 CPU.
I know that a lot has been said by alphamac in his very interesting posts but he had additional cards creating more heat, so he was looking for high flow, like 100 CFM for the case fan. In my case, I was looking mainly to reduce the noise and to replace the CPU fans for the dual CPU.
On both of these computers, CPU fans were not working anymore, speed was increasing a little bit, then slowing down and the T was increasing
With the 733 CPU, this was not an issue, reaching 41c after 1 hour.
But with the dual CPU, I reach 40c after 10 minutes
Here are the conclusions of my tests.
Temperatures were measured after 30 and 60 minutes of video conversion, using around 80% of the CPUs.
Best option for single and dual CPU is 2 Noctua Fans.
Very good option for high double CPU usage, a little bit cheaper, is Sanyo, higher flow but more noisy.
Evercool, much cheaper is VERY noisy.
For the Case fan, the SY1225 is generating more noise than the CP fan. That is why I start looking for something quiet and choose the Noctua.
There was no obvious relation between the CPU Heatsink Temperature and the exhaust Case Fan Temperature
Exhaust 27-28c with CPU 40c to 48c (After 1 hr test)