Summary of "Chasing a Gaming World Record"
Chasing a Gaming World Record (technical & product focus)
Goal
Use a custom sub‑zero cooling setup (three‑phase cascade refrigerator + cascade chiller) to break a PC benchmarking world record — specifically a PCMark 7 CPU‑focused run.
Key hardware & products
Cascade refrigeration system
- Three‑phase cascade refrigeration designed to reach extreme sub‑zero temperatures (expect ~‑90 °C on the CPU).
- Proper startup sequence required (bottom phase first).
- Thermal expansion valve controls refrigerant flow to stabilize temperatures under varying load.
CPU & platform
- High‑end Intel platform (referred to as “285K”) on an ASUS Apex‑class motherboard with aggressive OC profiles.
Memory
- Patriot Viper DDR6000 C28 top‑bin kit, further overclocked beyond stock binning using motherboard presets and manual tweaks.
GPU
- RTX 5090 Astral present but not required for the CPU benchmark.
- GPU prepped for sub‑zero use (Plasti Dip, paper towel) and attached to an industrial chiller (“Bruce Chillis”).
Cooling hardware & accessories
- Evaporator “head” with spiral evaporator prototype; newer evaporator versions use thinner material for faster heat transfer.
- Custom 3D‑printed mounting brackets for the chiller head (printed in nylon via HP Multijet Fusion 4200 for durability and insulation); PLA failed in testing.
- Kingpin socket heater (backside heating element) to prevent moisture on the PCB back side.
- Neoprene closed‑cell foam for frontside insulation; cut to clear DIMM slots; O‑rings used for seals.
- Thermal interface: Thermal Grizzly Kryonaut (preferred over liquid metal for extreme cold).
- Misc: Plasti Dip coatings for condensation protection; WD‑40 Specialist mentioned as an anecdote (not recommended).
Power & electrical
- The cooling system draws kilowatts; individual compressor phases measured ~700–1,100 W each during startup/ramp.
- Multiple dedicated circuits used (seven circuits available).
BIOS / software / benchmarking workflow
Preparation
- Update BIOS and VGA BIOS.
- Install and tune Windows; prep GPU drivers.
- Ensure proper power cabling and hardware slot placement (SSD in correct slot matters).
ASUS Apex OC features & settings
- Use “Advanced OC profile” and built‑in aggressive memory profiles to simplify tuning.
- Enable multi‑core enhancement, remove power/thermal limits.
- Set manual AI overclock tuner and NPU boost tuning.
- Use motherboard presets to avoid extensive manual timing work; still expect manual adjustments for final runs.
Voltage & VRM handling
- Vcore set to 1.35 V for the run (colder temps typically need less voltage but chip leakage matters).
- Switched from regulation (DLVR stepping) to power‑gate mode so the VRM delivers target voltage directly — common for extreme benching but not recommended for everyday use.
Benchmark process
- Run PCMark 7 (15–20 minute CPU benchmark).
- Capture screenshots of CPU ID, motherboard, memory settings.
- Submit result.
- Use WPrime for quick stability checks between runs.
Troubleshooting examples encountered
- Data file corruption during a run.
- SSD in wrong PCIe slot causing x8 vs x16/Gen5 bandwidth differences — fixed by moving SSD to correct slot.
- GPU clocks not applied after reboot — fixed via slot checks, driver/cache tuning, and reruns.
Techniques & tips
Condensation mitigation
- Apply Plasti Dip coating and use paper towels to protect components from moisture (effective but messy and may void RMA).
- Use closed‑cell neoprene foam to fill gaps and insulate around the socket/DIMM area.
- Use a kingpin socket heater on the PCB back to prevent moisture formation.
Mechanical mounting & seals
- Use robust nylon 3D prints (HP MJF) for chiller mounts; avoid fragile PLA.
- Use O‑ring seals and neoprene for front insulation to keep the evaporator head sealed around socket/DIMM area.
Thermal interface
- Avoid liquid metal for extreme sub‑zero work (can solidify and is messier).
- Use a cryo‑rated paste such as Thermal Grizzly Kryonaut.
Overclocking workflow tips
- Use motherboard OC profiles to speed up memory tuning, then refine manually for record attempts.
- Monitor chiller phase power draw and manage compressor sequencing.
- Rely on the expansion valve to tune refrigerant flow under load.
Outcomes
- Multiple troubleshooting runs were required.
- Final successful PCMark 7 run achieved a world record after addressing SSD slot placement, cache/GPU/memory tuning, and repeating runs.
- Cascade cooling provided stable, repeatable runs — a key advantage for extreme benchmarking.
Safety & ethics notes
- Some unconventional tips were shared as anecdotes (e.g., spraying socket with WD‑40 Specialist) and are explicitly not recommended.
- Coatings and modifications (Plasti Dip, etc.) can void warranties and RMA; proceed with caution and at your own risk.
Relevant products / brands mentioned
- Cascade chiller system
- Kingpin socket heater
- HP Multijet Fusion 4200 (3D printing)
- Patriot Viper DDR6000 C28
- Thermal Grizzly Kryonaut
- RTX 5090 Astral GPU
- ASUS Apex motherboard
- “Bruce Chillis” industrial chiller
- Plasti Dip
- Neoprene insulating foam
Main speakers / sources
- Linus Tech Tips host(s) (addressed as “V”/Linus)
- Charles Fuggerworth (overclocking expert / primary technician)
- Max (overclocking teammate / loaned parts)
- References to Bruce Chillis (chiller)
- Sponsor references (Delete Me)
Category
Technology
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