← Back to Fleet Dashboard

🗑️ scraps v1

scraps is exactly what it sounds like. Made of smallpieces leftovers and bottom-tier GPUs. It's a 4-Core Haswell (8 threads) with 8GB RAM, currently running 5 bottom-tier cards.

🖥️ Hardware Summary

🗺️ GPU Ordering Map

Motherboard SlotGPU ModelPCI IDNVIDIA IndexGPU UUIDNotes
Slot 1 (x1)DELL 3060 Ti0201ed25c7dActive (8GB)
Slot 2 (x1)ASUS 3060 Ti031a76d84a0Active (8GB)
Slot 3 (x1)Empty———Empty
Slot 4 (x1)ASUS 3060 Ti042d1ea526fActive (8GB)
Slot 5 (x1)Empty———Empty
Slot 6 (x1)ASUS 2060053535ba65cActive (6GB)
Slot 7 (x1)Empty———Empty
Slot 8 (x1)Gigabyte 2060 SUPER0648990101dActive (8GB)

🚀 Scraps v2 Upgrade Roadmap: High-Density 8-GPU Folding & LLM Architecture

Architecture Specification: Complete Bill of Materials (BoM), 8-GPU PCIe Gen4 lane allocation topology, and physical assembly guide for upgrading scraps from legacy Haswell (v1) into a high-density, 12-core AMD Ryzen multi-GPU workstation (v2) inside the existing GPNE 8-fan wind-tunnel chassis.

1. Executive Summary & Architectural Rationale

Scraps v2 is engineered for simultaneous high-throughput Folding@Home (F@H) work unit processing and Large Language Model (LLM) pipeline-parallel inference. The v1 Haswell platform suffered from two critical architectural constraints: single-channel 8GB DDR3 memory exhaustion (which repeatedly locked kernel page tables during Core27 5-GPU workloads) and PCIe 2.0 x1 riser bandwidth starvation (500 MB/s per slot).

By migrating to a 12-core AMD Ryzen platform (AM5 or AM4) paired with 64GB of system memory, native PCIe bifurcation (x4/x4/x4/x4), powered M.2-to-PCIe Gen4 risers, and the existing 2400W server PSU coupled with a 12V Pico-PSU, Scraps v2 unlocks unthrottled PCIe Gen4 x4 / x2 bandwidth to all 8 slots with zero kernel swap thrashing.

2. System Bill of Materials (BoM)

2.1 Core Platform Components

Component Category Item & Specification Qty Rationale & Operational Notes
Processor (CPU) AMD Ryzen 9 7900 (AM5, 12C/24T, 65W Base TDP)
OR AMD Ryzen 9 5900X (AM4, 12C/24T, 65W Eco Mode)		 1 Provides 12 physical cores to guarantee 1 dedicated feeder thread per GPU worker plus ample headroom for OS/network synchronization. 65W TDP matches the CPU cooler envelope.
CPU Cooler Thermalright AXP90-X53 Full Copper (53mm total height) 1 Fits strictly under the GPNE chassis 65mm vertical crossbar limit. High-density pure copper finstack dissipates 65W TDP / 88W PPT continuously in the forced wind tunnel.
Motherboard ASRock B650 LiveMixer / Pro RS (AM5)
OR ASUS ProArt X570-CREATOR / Prime B550-PLUS (AM4)		 1 Must support native x4/x4/x4/x4 PCIe bifurcation on PEG Slot 1, multiple native M.2 Gen4 x4 slots, and chipset PCIe x4 slot expansion.
System Memory 64GB (2x32GB or 4x16GB) DDR5-5200 (AM5)
OR 64GB (4x16GB) DDR4-3200 (AM4)		 1 Kit 64GB capacity completely eliminates memory starvation and disk swap thrashing during large LLM weight loading and concurrent multi-GPU F@H buffer allocations.
Primary Power Supply 2400W Single-Rail 12V Server Miner PSU (10x Heavy-Gauge 16AWG Leads) 1 Delivers high-amperage, continuous 12V direct power to all 8 GPUs and powered PCIe riser cards.
ATX Power Adapter 200W–250W 12V DC-to-ATX Pico-PSU Module (6-pin PCIe Input) 1 Converts single-rail 12V input from the server PSU into +5V, +3.3V, and +5VSB rails for the motherboard 24-pin and CPU 8-pin EPS headers.

2.2 PCIe Expansion, Riser & Storage Hardware

Hardware Item Specification / Type Qty Function & Interconnect Details
Quad M.2 / MCIO AIC Passive PCIe 4.0 x16 to Quad M.2 / MCIO Bifurcation Card 1 Installs into PEG Slot 1 (bifurcated x4/x4/x4/x4 in BIOS) to break out 4x independent Gen4 x4 links for GPUs 1–4.
M.2 to PCIe x4 Risers M.2 NVMe to PCIe x4 Slot Powered Risers with integrated 6-pin PCIe power 6 Adapts M.2 slots (4 from AIC + 2 from motherboard) into physical PCIe slots with direct 12V 6-pin auxiliary power.
PCIe x4 Riser Cable PCIe 4.0 x4 to x16 Extension Riser Cable (6-pin powered) 1 Connects GPU 8 to the motherboard's secondary chipset physical x16 slot (wired x4).
Migration NVMe M.2 Existing Boot/Data NVMe SSD from Scraps v1 1 Installs into designated chipset M.2 storage slot for seamless OS environment and telemetry dataset retention.
Migration SATA Drive Existing 2.5"/3.5" SATA Storage Drive from Scraps v1 1 Connected via native SATA motherboard port and Pico-PSU SATA power connector.

3. 8-GPU PCIe Lane Allocation Map

The 24-lane CPU complex and chipset downlink are segmented into unthrottled PCIe Gen4 x4 / x2 channels, delivering 4x to 8x the link bandwidth of legacy 1x risers:

4. Step-by-Step Assembly & Installation Guide

  1. Step 1: GPNE Chassis Preparation & Electrical Safety Inspection
    • Unscrew and remove the original AX-B85M-ETH riserless motherboard from the GPNE chassis.
    • CRITICAL SAFETY CHECK: Remove all factory brass standoffs from the floor of the GPNE case. The proprietary AX-B85M-ETH standoff pattern differs from ATX. Any stray standoff left beneath a standard ATX PCB will cause an immediate catastrophic short circuit upon power-on.
    • Install mounting standoffs strictly in alignment with standard ATX motherboard mounting holes. Cover any unused threaded holes on the metal tray with electrical insulating tape.
  2. Step 2: Motherboard, CPU, and Thermalright AXP90-X53 Installation
    • Install the 12-Core Ryzen processor (7900 or 5900X) into the socket.
    • Mount the Thermalright AXP90-X53 Full Copper cooler using its reinforced steel backplate. Apply high-thermal-conductivity paste. Confirm total cooler vertical height is under 55mm to clear the GPNE top crossbars.
    • Seat the 64GB memory modules into dual-channel slots.
    • Plug the Pico-PSU module directly into the motherboard 24-pin ATX connector.
  3. Step 3: Mounting Motherboard and Riser Infrastructure
    • Secure the motherboard to the GPNE chassis standoffs using ATX chassis screws.
    • Insert the Quad M.2 / MCIO PCIe bifurcation card firmly into primary PEG Slot 1.
    • Seat the M.2-to-PCIe x4 adapter cards into the Quad AIC ports and the designated motherboard M.2 slots.
    • Install the Scraps v1 NVMe SSD into the secondary storage M.2 slot and attach the SATA data cable.
  4. Step 4: Power Wiring and Load Distribution
    • Connect a dedicated 6-pin PCIe lead from the 2400W server PSU into the 6-pin input harness of the Pico-PSU module. Plug the 4+4 pin CPU EPS cable from the Pico-PSU into the motherboard CPU power header.
    • Route the remaining 2400W PSU 16AWG PCIe 6+2 pin leads across the rig:
      • Connect dedicated 6-pin PCIe power leads to all 8 PCIe riser cards. NEVER use SATA-to-6pin adapters to power risers.
      • Connect 8-pin / 6-pin auxiliary power leads to each GPU. Ensure total load per 16AWG splitter lead remains within the 225W rating.
  5. Step 5: GPU Mounting & Wind Tunnel Rigging
    • Position all 8 GPUs across the GPNE upper mounting rail.
    • Fasten all GPU mounting brackets firmly to the support rail using heavy-duty hardware to prevent sagging or bus disconnections.
    • Confirm unrestricted airflow clearances across all GPU intake shrouds and the central AXP90-X53 CPU cooler fan within the 4-push / 4-pull wind tunnel.
  6. Step 6: BIOS Configuration & OS Initialization
    • Power on and enter the UEFI BIOS setup menu.
    • Navigate to Advanced > AMD PBS / PCIe Configuration and set PEG Slot 1 Bifurcation to x4/x4/x4/x4.
    • Set PCIe Link Speed to Gen4 (or Auto). Enable Above 4G Decoding and Resizable BAR (ReBAR).
    • If running Ryzen 9 5900X, enable 65W Eco Mode in Precision Boost Overdrive settings to maintain 50–55°C package temperatures under the AXP90-X53 cooler.
    • Boot into Linux (Ubuntu 22.04 LTS or 24.04 LTS recommended). Set CPU folding slots to 0 in F@H client configuration to reserve all 12 physical CPU cores for GPU feeder and LLM orchestration threads.