This DIY user built his own 256-core RISC-V Megacluster CPU running at 14.7GHz

DIY gadget YouTuber Bitluni has built his own RISC-V megacluster, with a compact design, and a single-core CPU clock of an insane 14.7GHz.

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DIY gadget YouTuber "Bitluni" has built his own personal RISC-V megacluster, inside of a compact design, check it out:

Overall, the megacluster features 256 x RISC-V-based microcontrollers, operating at a mind-boggling 14.7GHz single-core frequency. Impressive. Remember, these are RISC-V chips, not x86-based processors inside of a regular PC.

The idea behind this is to fit 16 of the superclusters into a single interface, but that created issues down the line, so he designed his own "cluster blade" that featured two microcontrollers mounted on the board, each of them managing the supercluster on top of it. The cluster blade allowed Bitluni to give each supercluster its bus interface.

This DIY user built his own 256-core RISC-V Megacluster CPU running at 14.7GHz 701This DIY user built his own 256-core RISC-V Megacluster CPU running at 14.7GHz 702
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This DIY user built his own 256-core RISC-V Megacluster CPU running at 14.7GHz 704This DIY user built his own 256-core RISC-V Megacluster CPU running at 14.7GHz 705

Each of the cluster blades features two CH32V203 microcontrollers mounted, with the DIY gadget guru combining 8 of them to form one big uniform layer. Through the assembly process, he had to solder each microcontroller onto the circuit board, and then attach the GPIO pins to enter the testing phase.

After a while, he found a major design flaw: he missed an internal clock source, causing the LEDs mounted to show functionality to blink in random, uncertain patterns. After he played around with the program and went through debugging the bus synchronization, Bitluni found the functionality he was looking for in his DIY cluster.

Bitluni explained through his YouTube description of the video:

  • This new cluster build escalated quickly. Especially with the bugs I built in but here are some specs:
  • 256x RISC-V 48MHz
  • 17x RISC-V 144MHz
  • 640x GPIO
  • 256x ADC
  • 17x 8-Bit bus
  • Combined single core clock rate would be 14.7GHz not that impressive but also not too shabby.
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Anthony joined the TweakTown team in 2010 and has since reviewed 100s of graphics cards. Anthony is a long time PC enthusiast with a passion of hate for games built around consoles. FPS gaming since the pre-Quake days, where you were insulted if you used a mouse to aim, he has been addicted to gaming and hardware ever since. Working in IT retail for 10 years gave him great experience with custom-built PCs. His addiction to GPU tech is unwavering and has recently taken a keen interest in artificial intelligence (AI) hardware.

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