Open Source Visions
 

Silent PC 2

Description:
Builing of a completely silent x86 compatile PC
License:
- (no software)
Current State:
working without any (heat) problems (sucsessor of "Silent PC" )
Current version:
0.1
Download:
-
What’s this project about?

PC case with added
air grill on the top
My retro arcade cabinett is based on AdavanceMAME/AdvanceMenu (special MAME version for arcade monitors) runnuing under linux.
While builing this machine I was very unsatisfied with the fact, that I always needed to attach a real PC-monitor for every administrative task. This was really annoying and extremely slowed down the software configuration. So I began to search for a solution which makes it possible to use the linux colsole on my direcly connected arcade monitor. And because the special VGA-mode is entered before the kernel boots (and even before GRUB starts) this solution even allows me to see the kernel startup messages, which is sometimes very useful.
Steps of the Boot Process
This soultion adds one more stage to the boot process. This stage (using FreeDos) is executed before starting GRUB itself.
At first the PC BIOS boots the freedos (get the whole image) which executes VGATV. VGATV tweaks some registers in your VGA card to force it to generate a TV compatile (NTSC or PAL) video signal. Afterwards GRUB (for DOS) is started to allow you to boot your favorite OS.
Technical Details:
  • Pentium IV 2.5 GHz
  • Added large air grille on top of the pc case
  • "silentmaxx FANLESS ATX 350W" power supply
  • fanless Matrox G450 dual-head graphic card
  • no harddisk - booting via onboard network and PXE/etherboot
Pictures
This is my selfmade heatsink. On the lower right you can see the mounted Pentium II with its SECC2 case. The heatsink is made from an aluminium cooling element (200mm x 25mm x 150mm). The larger part was build to fit SECC2 standard. So it fits nicely into the mainboard brackets. The Pentium II was mounted with four screws.
to allow a better air convection the power supply was mounted upside-down. Since the standard fan was not used I removed it, because it slows down the air flow (in the unplugged case).
to allow a better air convection the power supply was mounted upside-down. Since the standard fan was not used I removed it, because it slows down the air flow (in the unplugged case).
These are the copper parts, each 40mm x 10mm and over 30cm length.
These are the copper parts, each 40mm x 10mm and over 30cm length.