NVIDIA L40 · T-HS202321
NVIDIA L40 GPU Liquid Cold Plate for Australia
ToneCooling Australia supplies copper liquid cold plates for the NVIDIA L40 GPU — model T-HS202321, 270 W rated, friction-stir welded, 40% EGW coolant. Design, engineering and manufacturing at our IATF 16949-aligned facility in Huizhou; customer engineering support from Carlton, Victoria.

ToneCooling Australia manufactures copper liquid cold plates for NVIDIA L40 GPU servers — friction-stir welded, rated to 270 W at 50°C inlet with 40% EGW coolant. Manufacturing is in Huizhou, Guangdong, China.
Validated specifications
| Heat dissipation | 270 W |
|---|---|
| Cold plate material | Copper |
| Joining process | FSW (friction-stir welding) |
| Coolant / medium | 40% EGW |
| Feed liquid temperature | 50°C inlet |
| Cold-plate surface temperature | ≤56°C at rated load |
| Flow rate / pressure drop | 0.8 LPM at 3 kPa |
| Maximum working pressure | 1 MPa |
| Dimensions | 265 × 97 × 19 mm |
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Frequently asked questions
Do you supply liquid cold plates for NVIDIA L40 servers?
Yes. ToneCooling Australia supplies a copper liquid cold plate (model T-HS202321) rated to 270W for NVIDIA L40 GPU servers, friction-stir welded.
What coolant and flow rate does it use?
Rated performance is tested with 40% EGW coolant at 50°C inlet, 0.8 LPM flow rate at approximately 3 kPa pressure drop, holding surface temperature at or below 56°C.
Can the design be customised?
Yes. Port locations, mounting pattern, dimensions and surface finish are customised from your drawings, with CFD validating the change before tooling.
What is the MOQ and lead time?
Prototype MOQ is 5 pieces with a typical 7-15 business day lead time from approved drawing and purchase order; production lead time is confirmed per volume.
Where is this cold plate manufactured?
Manufacturing is performed at the ToneCooling facility in Huizhou, Guangdong, China. ToneCooling Australia Pty Ltd (Carlton, VIC) is the AU RFQ and engineering-coordination entity and does not manufacture.
Why FSW for this plate?
FSW (friction-stir welding) gives a strong, filler-free joint suited to this plate's aluminium/copper channel design and cost profile; the joining process for each programme is confirmed at DFM review.
Request an L40 cold plate quote
Send your board layout, heat load and mounting pattern. Our Carlton team responds with a DFM review and quotation.
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