ces wrote:The Socratic dialog is too subtle for me. I am only sort of getting what you are saying.
Would you be kind enough to explain exactly what you did and on what exact system in a single message? And what you are now doing?
Some pictures would certainly be nice. Seems like you are doing something noteworthy. But I am just having trouble following what exactly it is.
Thanks for your question ces. It really might get a bit confusing with all the posting every time I change something. My next goal is to remove PSU fan. It's already switched to Scythe s-flex 12cm and it's the only one still running with about 5V. Since it's not cooling any other components (PSU in its own chamber), my cooling may be called passive but my system isn't totally passive because of that. Here's a short review how I got to this point, more detailed information can be found on my
general gallery post.
1. P182 and 5 fans in positive pressure setup, overclocked
- CPU E8400 @ 3,6GHz, voltage 1,125V-1,225V
- MEM DDR2 @ 667MHz, voltage 1,9V
- CPU fan 12cm noctua @ 120rpm-640rpm
- SYS fan 12cm nexus @ 360rpm-640rpm
- CASE fans 3x 12cm nexus @480rpm-640rpm
- temperature (STRESS TEST average)
52,3C
DONE HERE: removed all the case fans
2. P182 with 2 fans in neutral pressure setup, overclocked
- CPU E8400 @ 3,6GHz, voltage 1,125V-1,225V
- MEM DDR2 @ 667MHz, voltage 1,9V
- CPU fan 12cm noctua @ 150rpm-640rpm
- SYS fan 12cm nexus @ 360rpm-640rpm
- temperature (STRESS TEST average)
60,7C
DONE HERE: Overclocked my memory. Added a 1,2m x 12cm chimney on top of the case.
3. P182 with 2 fans and a chimney, neutral pressure setup, overclocked
(same image + chimney on top)
- CPU E8400 @ 3,6GHz, voltage 1,125V-1,225V
- MEM DDR2 @ 800MHz, voltage 1,9V
- CPU fan 12cm noctua @ 150rpm-640rpm
- SYS fan 12cm nexus @ 360rpm-640rpm
- temperature (STRESS TEST average)
53,7C
DONE HERE: Removed all fans from upper chamber. Modded PSU by changing original ADDA fan to Scythe S-flex. Underclocked CPU. Blocked back exhaust vent and some other minor holes high in the case with transparent tape.
4. P182 with chimney only, neutral pressure, underclocked
- CPU E8400 @ 1,8GHz, voltage 1,125V-1,225V
- MEM DDR2 @ 800MHz, voltage 1,9V
- temperature (STRESS TEST average)
57,5C
DONE HERE: Undervolted CPU and MEM to minimum possible
5. P182 with chimney only, neutral pressure, underclocked, undervolted
(same image)
- CPU E8400 @ 1,8GHz, voltage 0,8V
- MEM DDR2 @ 667MHz, voltage 1,8V
- temperature (STRESS TEST average)
46,1C
(for comparison: build 5. without a chimney, average stress temperature 50,9)
TO BE DONE: remove PSU fan, find a solution for cooling it otherwise. If that's not possible, change to originally fanless PSU to achieve total passive system.
TO BE DONE AFTER THAT: See how much performance can be achieved with a totally passive chimney solution, setting maximum temperature to some reasonable level (CPU max 65C, GPU max 75C, PWM max 85C maybe?) If you have a passive build or only PSU fan spinning like me, please visit
this thread (in "silent front"). If you're interested in more precise temps / fan speeds, please dig my
general gallery post and this post from beginning.