Thermalright SI-128

jamsponge · Post by **jamsponge** » Wed Dec 17, 2008 2:35 am

Hi,

Is the Thermalright SI-128 suitable for fanless cooling a 59W AMD Athlon 64, socket 754 processor? I will not be doing any overclocking, and there is a 92mm case fan nearby.

The info on the heatsink is here:
http://www.thermalright.com/new_a_page/ ... VzaWFzdA==

Thanks for any input.

Post by **NeilBlanchard** » Wed Dec 17, 2008 9:16 am

Hi,

That is completely dependent on the case, and the air flow through it; and to a lesser extent the orientation you end with. You might be fine, or you might have to duct it to the exhaust fan. It is worth a try.

The challenge comes from the closely spaced fins on the heatsink. Could you fit a tower heatsink in the case?

bgavin · Post by **bgavin** » Sat Dec 27, 2008 3:54 pm

The SI-128 appears to be right at 80% open air using a simple square area calculation, fin count, and fin thickness. My Zipang cooler is 81.8% using the same method. My point being they are similar coolers with similar fin density.

Tested on an E8400 at stock clocking, the Zipang and 600 rpm fan let things get a bit warm. I moved up to a Red Scorpion 1200 rpm fan for optimal cooling. Knowing this, I would be hard pressed to use it fanless, unless it was ducted into a case exhaust fan to create some air flow.

Mats · Post by **Mats** » Sat Dec 27, 2008 5:50 pm

If you haven't already got it, get the SI-128 SE instead.
Much better performance, especially with low air flow.
Tough I guess you need some extra parts for mounting it.