---
title: "EK-Pro CPU WB 4677 Rack Ni + Acetal – enterprise"
description: "Enterprise-grade 1U-compatible water block for LGA 4677 Intel Xeon processors with four low-profile G1/8\" threaded side ports for server rack deployments."
url: "https://www.lmtek.com/components/cpu-water-blocks/ek-pro-cpu-wb-4677-rack-ni-acetal"
locale: "en"
---

# EK-Pro CPU WB 4677 Rack Ni + Acetal

_enterprise_

Enterprise-grade 1U-compatible water block for LGA 4677 Intel Xeon processors with four low-profile G1/8" threaded side ports for server rack deployments.

SKU: EK-Pro CPU WB 4677 Rack Ni + Acetal

## Compatible LM TEK platforms

- [LM TEK 4U8GPU10KW](/ai-hpc-servers/4u8gpu10kw)

## Specifications

| Spec | Value |
| --- | --- |
| Compatibility | LGA 4677 |
| Platform | Intel |
| EAN | 3831109861110 |

## Technical datasheet

| Spec | Value |
| --- | --- |
| Dimensions (L x H x W) | 118 x 78 x 22.2 mm |
| Materials | Nickel-plated copper, stainless steel, POM |
| Mass | 0.534 kg |
| Ports | 4 x G1/8" |
| Mounting method | T30 Torx |
| Working pressure | 2500 Pa |
| Maximal working pressure | 30000 Pa in loops containing an EK-Pro Pump Reservoir Manifold, otherwise 75000 Pa |
| Operating temperature range | 5 – 60 °C |

## 1U Server Cooling for Intel Xeon LGA 4677

The EK-Pro CPU WB 4677 Rack Ni + Acetal is an enterprise-grade water block designed for LGA 4677 Intel Xeon processors, fitting 1U chassis for server rack use. It boasts four G1/8" threaded side ports for low-profile applications.

Crafted for performance, reliability, and serviceability, it ensures top thermal performance and connectivity for liquid-cooled high-density computing systems. Its copper base is nickel electroplated, while the top is CNC machined from black POM Acetal, with a stainless steel hold-down bracket.

### 1U Rack Compatible

Four side-mounted G1/8" ports keep the block within 1U height, making it suitable for dense rack deployments of Intel Xeon LGA 4677 servers.

### T30 Torx Hold-Down Bracket

Stainless steel hold-down bracket with T30 Torx fasteners provides consistent, measured clamping force for reliable long-term sealing on the LGA 4677 socket.

### Nickel-Plated Copper + POM Acetal

Electroplated copper base and CNC-machined black POM Acetal top offer the corrosion resistance and mechanical durability required in continuously operating server environments.

## Technical drawing

[Top & side view, in millimetres](https://cdn.sanity.io/images/5gtqpiph/production/3df1d43552643fea967ea5f035487e78aacabc0d-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/9c49bac308604ae2a3c1dcc9f3ce979ab97f6fc2.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.

## Socket Compatibility

Compatible exclusively with LGA 4677 Intel Xeon processors. Designed for 1U rack server chassis where low-profile side port access is required.

## In the box

- 1× EK-Pro CPU WB 4677 Rack Ni + Acetal water block
- 2x EK plug G 1/8”
- EK-Loop Multi Allen Key (6mm, 8mm, 9mm)
- 1x Torx T30 Key – 1x 5mm Allen Key
- Thermal grease (1g)