GPU Cold Plate · NVIDIA GB300
NVIDIA GB300 Cold Plate for Australia
ToneCooling supplies a batch-validated direct-to-chip cold plate kit for the NVIDIA GB300 Grace Blackwell Ultra platform — 4 GPU cold plates + 2 CPU cold plates (4G+2C), real thermal and pressure-drop test data from a 2026-03-20 batch validation run. Copper micro-channel construction. Design coordination and AS/NZS support from Carlton, Victoria; manufacturing at our IATF 16949-aligned facility in Huizhou, Guangdong, China.
ToneCooling supplies a batch-validated NVIDIA GB300 (Grace Blackwell Ultra) direct-to-chip cold plate kit for Australian AI data-centre projects — real thermal and hydraulic test data from a 2026-03-20 validation run, not a projected estimate. Manufacturing is in Huizhou, Guangdong, China.
GB300 GPU + CPU Cold Plate Kit (batch-validated)
Direct-to-chip cold plate kit for the NVIDIA GB300 platform — 4 GPU cold plates + 2 CPU cold plates (4G+2C), batch-tested 2026-03-20 with pure water at steady state.
| Test date | 2026-03-20 (batch validation, pure water) |
|---|---|
| GPU cold plate — flow rate | 1.7 L/min |
| GPU cold plate — heat load tested | 1066.94 W |
| GPU cold plate — inlet / outlet temp | 19.9°C / 27.3°C |
| GPU cold plate — pressure drop | 12.06 kPa |
| GPU cold plate — thermal resistance | 0.0130–0.0133 °C/W |
| CPU cold plate — flow rate | 0.7 L/min |
| CPU cold plate — heat load tested | 485.46 W |
| CPU cold plate — inlet / outlet temp | 23.6°C / 31.5°C |
| CPU cold plate — pressure drop | 10.39 kPa |
| CPU cold plate — thermal resistance | 0.0220 °C/W |
| Thermal interface material | TC-5888 thermal paste |
| Cold plate material | Copper (grade confirmed at quotation) |
| Joining process | Confirmed at quotation (DFM review) |
| Helium leak rate | ≤ 1×10⁻⁹ mbar·L/s (100 %) |
| Bond verification | Ultrasonic C-scan, 100 % of units |
Test data from ToneCooling's 2026-03-20 batch validation run. Final performance depends on customer module drawings, coolant chemistry, and system-level flow distribution — confirmed per project.
Download the GB300 4G+2C datasheet (PDF, ToneCooling Australia) · model TC-BZP-GB300-01A · test date 2026-03-20
Kit assembly and design continuity from GB200
The GB300 4G+2C kit is a standard kit supplied to its datasheet, and evaluation samples are quoted from the same datasheet. In 2026 an advanced-engineering company in Victoria ordered several ToneCooling GB300-class liquid cold plate systems for liquid cooling evaluation. GB200 Bianca cold plate kits (2,700 W per module) and H200 8-GPU baseboard assemblies are also available, each with its own datasheet. See the full NVIDIA GPU cold plate catalogue.
Frequently asked questions
Is real test data available for the GB300 cold plate?
Yes. ToneCooling batch-validated the GB300 GPU+CPU cold plate kit on 2026-03-20 with pure-water testing: GPU cold plate thermal resistance 0.0130–0.0133 °C/W at 1066.94 W heat load (12.06 kPa pressure drop, 1.7 L/min); CPU cold plate 0.0220 °C/W at 485.46 W (10.39 kPa pressure drop, 0.7 L/min). ToneCooling Australia coordinates GB300 RFQs from Carlton, Victoria; manufacturing is in Huizhou, China.
How does the GB300 cold plate differ from GB200?
GB300 (Grace Blackwell Ultra) carries a higher thermal envelope than GB200. The GB300 4G+2C kit (TC-BZP-GB300-01A) has its own batch-tested datasheet (4 GPU + 2 CPU cold plates); GB200 (TC-BZP-GB200-01A) is a separate kit with its own datasheet. The GB300 joining process is confirmed at quotation (DFM review).
What validation applies to GB300 cold plates?
Production units follow the same regime as GB200: 100 % helium-leak testing to ≤ 1×10⁻⁹ mbar·L/s and 100 % ultrasonic C-scan bond verification, with PPAP 1–5 on request.
Who do I contact for a GB300 RFQ in Australia?
Contact the ToneCooling Australia team in Carlton, Victoria to request the full GB300 validation report and start an RFQ. Manufacturing origin is disclosed as Huizhou, Guangdong, China.
Request the GB300 validation report
Get the full 2026-03-20 batch validation data and discuss your module drawing with our Carlton team. We coordinate RFQ timelines and AS/NZS documentation.
Request a Quote Download the datasheet (PDF)