Bykski Durable All Metal GPU Water Block and Backplate For NVIDIA RTX PRO 5000/6000 Blackwell Server Edition (N-RTXPRO6000-SR) - Continuous Usage
US import duties and tariffs are included in every price.
This block with radiator, pump and fans, pre-filled and sealed. No loop to build.
360 All-in-One (AIO), 3 x 120mm fans
B-FRD-RTXPRO6000-360
$549.99See the kit →
PrimoChill SX fittings for the G1/4 ports, in stock in Boise. Pick a finish and how many you need; 6+ in any mix and the price drops.
About this part
The Bykski N-RTXPRO6000-SR is a continuous-duty GPU water block with backplate for NVIDIA RTX PRO 5000 and 6000 Blackwell Server Edition cards. It covers the GPU chip, memory, and power stages in one pass.
Server workloads push cards to sustained board power where chassis airflow falls behind. This block transfers heat directly to the loop using a 9.5 mm T2 copper base with a 0.35 mm core thickness, 56 micro-channels (0.3 mm width), and electroless nickel plating to prevent corrosion.
- GPU water block with backplate
- Installation hardware
- Thermal paste
- 1.5mm thermal pads
Technical specifications 21 specs
| Model | N-RTXPRO6000-SR |
|---|---|
| Cold Plate Material | Nickel-Plated T2 Copper |
| Top Panel Material | Nickel-Plated Copper |
| Terminal Material | POM |
| Backplate Material | Black Anodized Aluminum |
| Base Copper Thickness | 9.5 mm |
| Core Base Thickness | 0.35 mm |
| Micro-Channel Width | 0.3 mm |
| Micro-Channel Count | 56 |
| Micro-Channel Surface Area | 15,565.2954 mm2 |
| Cold Plate Length | 185.6 mm |
| Water Block Dimensions | 271.07 x 97.77 x 16.98 mm |
| Backplate Dimensions | 188.33 x 95.49 x 3.96 mm |
| Port Thread | G1/4 |
| Sealing Ring Material | EPDM |
| Net Weight | 1.4 kg |
| Working Pressure | Max 4 bar |
| Working Temperature Range | -20C to 60C |
| Heat Transfer Method | Jet Flow |
| Supported Fluids | Water, Ethylene Glycol, Propylene Glycol, Fluorinated Fluid, Mineral Oil |
| Warranty | 1 year |
Sealed kit, or just the block
Same cold plate, two ways to buy it, and what happens if you keep the cooler the card shipped with.
 B-FRD-RTXPRO6000-360 |
 N-RTXPRO6000-SR | Stock cooling
As the card ships
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|---|---|---|---|
| You already have | A case with a 360 mm radiator mount. Nothing else. | A working water-cooling loop: pump, radiator, reservoir, fittings, coolant. | The card and the cooler it came with: a passive fin stack or a small blower, built to be fed by a server's front-to-back airflow. |
| Day one | Remove the stock cooler, install the pads and the block, mount the radiator. Done. | Same block install, then plumb it into your loop, fill and bleed. | Plug it in. In a rack with a cold aisle it runs as designed. In a workstation or desktop case, nothing pushes air through the fin stack. |
| Serviceable | Sealed. Nothing to fill, bleed or top up. | Every part, because it is your loop. | Nothing to service, and nothing to improve: the cooler can only move the heat the case pushes through it. |
| Best for | Servers and workstations that need it running this week. | A build that already has water in it. | The rack it was designed for. Not a desktop, a workstation or an open bench, where it throttles under sustained load. |
| Where to buy it | $549.99 · See the kit | This page | You already own it. |
What buyers said
Left by people who bought this part here. Compatibility reports are the useful ones — if you installed it, say which board.
What installing it actually involves
Three steps, in the order that matters. The one people get wrong is the first.
This block fits 4 boards:
- NVIDIA NVIDIA 6000 - RTX PRO 6000 BLACKWELL SERVER EDITION
- NVIDIA NVIDIA 6000 - RTX PRO 6000 BLACKWELL MAX-Q
- NVIDIA NVIDIA 6000 - RTX 6000D 84GB
- NVIDIA NVIDIA 5000 - RTX PRO 5000 BLACKWELL
Match your exact model — not the family.
Thermal interface material as supplied. Even mounting pressure, correct bracket orientation, no over-torquing.
Run the pump on a bench supply with the rest of the system unpowered. 24 hours is the standard, an hour is the minimum.
Questions people ask about this part
Answers specific to N-RTXPRO6000-SR. If yours isn't here, ask — we'd rather talk you out of the wrong part than sell you one.
What does this part fit?
It is machined for 4 boards:
- NVIDIA NVIDIA 6000 - RTX PRO 6000 BLACKWELL SERVER EDITION
- NVIDIA NVIDIA 6000 - RTX PRO 6000 BLACKWELL MAX-Q
- NVIDIA NVIDIA 6000 - RTX 6000D 84GB
- NVIDIA NVIDIA 5000 - RTX PRO 5000 BLACKWELL
These are machined to a specific hardware layout, so match your exact model rather than the family before ordering. Part number N-RTXPRO6000-SR.
Is it in stock, and when will it ship?
Can I return it if it turns out not to fit?
Will I pay import duties or customs charges on delivery?
Who handles the warranty?
Is shipping free?
Are printed instructions included?
Do I need anything else to use it?
Ask us before you order
Send your exact hardware model and we'll confirm the right part before you spend $311.99 — or tell you honestly that this isn't the one.
Returns are accepted within 30 days and are easy to start in the support center. Unopened items can be returned for store credit with no restocking fee; other returns carry a restocking fee, higher for items that have been installed or used.