---
title: "EK-Pro GPU WB RTX A5500 Rack Nickel + Inox – Pro workstation"
url: "https://www.lmtek.com/components/gpu-water-blocks/rtx-a5500-rack"
locale: "en"
---

# EK-Pro GPU WB RTX A5500 Rack Nickel + Inox

_Pro workstation_

SKU: EK-Pro GPU WB RTX A5500 Rack Nickel + Inox

## Specifications

| Spec | Value |
| --- | --- |
| Compatibility | NVIDIA RTX™ A5500 |
| Form | rack |
| EAN | 3831109904770 |

## Technical datasheet

| Spec | Value |
| --- | --- |
| Compatibility | NVIDIA RTX™ A5500 |
| Form factor | FHFW rack (single PCIe x16 slot) |
| Dimensions | 311 × 141.2 × 23.5 mm |
| Mass | 1.643 kg |
| Ports | 2 × G1/4″ |
| Base material | Nickel-plated copper |
| Top material | Stainless steel |
| Terminal | POM Acetal, 45° angled |
| Seals | EPDM O-rings |
| Mounting method | Backplate |
| NVLink compatible | Yes |
| Working pressure | 2 500 Pa |
| Max pressure (with EK-Pro PRM) | 30 000 Pa |
| Max pressure (standalone) | 75 000 Pa |
| Operating temperature | 5 – 60 °C |
| EAN | 3831109904770 |

## Overview

The EK-Pro GPU WB RTX A5500 Rack Nickel + Inox is a single-slot water block for the NVIDIA RTX™ A5500 designed to fit FHFW server chassis. The Open Split-Flow cooling engine covers the GPU die, VRAM, and VRM and is particularly suited to multi-GPU setups where even coolant temperature distribution across all cards is required.

The block features a nickel-plated copper base and stainless-steel top, an integrated I/O plate, and a 45°-angled terminal block with two G1/4″ ports for integration with EK-Pro QDC kits. The retention backplate provides PCB rigidity and passive VRM cooling. NVLink connector compatibility is maintained.

Side-mounted standoffs ensure secure GPU mounting during chassis transport. EPDM O-ring sealing and pre-installed brass standoffs are included throughout.

### Single-slot efficient cooling

Single PCIe x16 slot fit in FHFW server chassis – maximises card density in multi-GPU rack deployments.

### Multi-GPU optimised

Open Split-Flow cooling engine provides even coolant temperature distribution across multiple cards in a manifold-fed loop.

### NVLink compatible

Retention backplate geometry maintains NVLink connector clearance for dual-GPU NVLink configurations.

### Integrated I/O plate

I/O plate integrated into the block body for space-efficient chassis rear panel integration.

### Retention backplate

Provides PCB rigidity and passive cooling to the VRM area on the reverse of the board.

### QDC kit compatible

45°-angled terminal block with two G1/4″ ports integrates directly with EK-Pro QDC kits and manifolds.

### Open Split-Flow for multi-GPU setups

The Open Split-Flow geometry produces even pressure distribution across the die contact surface. In multi-GPU manifold-fed setups, the block is designed to operate with reversed water flow where required, ensuring consistent coolant temperature across all cards in the chassis.

### FHFW single-slot with NVLink clearance

The block fits a single PCIe x16 slot in FHFW server chassis. The integrated I/O plate and retention backplate maintain NVLink connector geometry, supporting dual-GPU NVLink configurations. Side-mounted standoffs prevent PCIe slot flex during chassis transport.

### Pressure envelope

Working pressure is 2 500 Pa. Maximum rated pressure is 30 000 Pa in loops containing an EK-Pro Pump Reservoir Manifold, and 75 000 Pa in all other configurations. Figures are published at the supplier level.

## Technical drawing

[Top & side view, in millimetres](https://cdn.sanity.io/images/5gtqpiph/production/f772f0bc21a6e4d0df5981b8d82d8b8161032ec3-1600x1067.png)

## Download resources

Product documentation for specification, integration, and installation is available below. Revision numbers are printed on page one of each file.

- [Installation manual](https://cdn.sanity.io/files/5gtqpiph/production/c37daa3fc1db8bbf6ed46e5ef0a4d963d630b568.pdf) · Rev 1.0 · Torque sequence, TIM application maps, and the leak-test protocol. Read before first fitting.

A CAD STEP file of the full block assembly is available to partners on request – contact LM TEK engineering before specifying at fleet scale.

## In the box

- EK-Pro GPU WB RTX A5500 Rack - Nickel + Inox workstation and server-grade water block
- Retention backplate
- Mounting mechanism with screw-in brass standoffs
- Necessary mounting screws, nuts, and washers
- Thermal Interface Material