---
title: "CPU water blocks, for every socket worth running."
description: "CPU water blocks for Intel Xeon and AMD EPYC, Threadripper, and Ryzen processors. Workstation form factor uses top-mounted G1/4″ ports for tower builds. 1U rack form drops to side-mounted G1/8″ ports for vertical clearance inside rack chassis. Nickel-plated copper base, POM Acetal top, EPDM O-rings throughout."
url: "https://www.lmtek.com/components/cpu-water-blocks"
locale: "en"
---

# CPU water blocks, for every socket worth running.

CPU water blocks for Intel Xeon and AMD EPYC, Threadripper, and Ryzen processors. Workstation form factor uses top-mounted G1/4″ ports for tower builds. 1U rack form drops to side-mounted G1/8″ ports for vertical clearance inside rack chassis. Nickel-plated copper base, POM Acetal top, EPDM O-rings throughout.

- [EK-Pro CPU WB sTR - Nickel + Acetal](/components/cpu-water-blocks/cpu-wb-str) – Nickel + Acetal · Compatibility: AMD Socket sTRX4 (Socket SP3r3), AMD Socket TR4 (Socket SP3r2), AMD Socket SP3, AMD Socket sTR5, AMD Socket SP6 · Platform: AMD · Dimensions: 116.8 x 78 x 22.2 mm · EAN: 3831109895245
- [EK-Pro CPU WB sTR Rack - Nickel + Acetal](/components/cpu-water-blocks/ek-pro-cpu-wb-str-rack-nickel-acetal) – Compatibility: AMD Socket sTRX4 (Socket SP3r3), AMD Socket TR4 (Socket SP3r2), AMD Socket SP3, AMD Socket sTR5, AMD Socket SP6 · Platform: AMD · Dimensions: 116.8 × 85.37 × 26.2 mm · EAN: 3831109844076
- [EK-Pro CPU WB SP5 Rack Ni + Acetal](/components/cpu-water-blocks/ek-pro-cpu-wb-sp5-rack-ni-acetal) – Compatibility: AMD Socket SP5 (LGA 6096) · Platform: AMD · Dimensions: 116.8 × 92.4 × 22.2 mm · EAN: 3831109904084
- [EK-Pro CPU WB SP5 Ni + Acetal](/components/cpu-water-blocks/ek-pro-cpu-wb-sp5-ni-acetal) – Compatibility: AMD Socket SP5 (LGA 6096) · Platform: AMD · Dimensions: 116.8 × 92.4 × 22.2 mm · EAN: 3831109904077
- [EK-Pro CPU WB 4677 Rack Ni + Acetal](/components/cpu-water-blocks/ek-pro-cpu-wb-4677-rack-ni-acetal) – Compatibility: LGA 4677 · Platform: Intel · Dimensions: 118 × 78 × 22.2 mm · EAN: 3831109861110
- [EK-Pro CPU WB 4677 Ni + Acetal](/components/cpu-water-blocks/ek-pro-cpu-wb-4677-ni-acetal) – Compatibility: LGA 4677 · Platform: Intel · Dimensions: 118 × 78 × 22.2 mm · EAN: 3831109861103
- [EK-Pro CPU WB 4189 Rack](/components/cpu-water-blocks/ek-pro-cpu-wb-4189-rack-ni-acetal) – Compatibility: LGA 4189 · Platform: Intel · Dimensions: 113 × 78 × 22.2 mm · EAN: 3831109844700
- [EK-Pro CPU WB 4189](/components/cpu-water-blocks/ek-pro-cpu-wb-4189-ni-acetal) – Compatibility: LGA 4189 · Platform: Intel · Dimensions: 113 × 78 × 22.2 mm · EAN: 3831109844724

## Two terminal layouts, one cold-plate engine.

### Top-mount G1/4″ ports

Workstation

Top-terminal design with two G1/4″ threaded ports. Designed for tower and desk-side workstation builds where vertical clearance is generous and routing flexibility matters. Compatible with EK-Pro QDC kits and standard fittings throughout the catalogue.

Mounts directly under the chassis fan or pump-res header

### Side-mount G1/8″ ports

Server rack

Rack-style terminal routes plumbing horizontally for 1U chassis clearance. Two G1/8″ side-mounted ports keep the block envelope flat against the motherboard. Pairs with EK-Pro QDC kits for single-block serviceability inside a populated rack chassis.

Compatible with 1U rack chassis at standard board height

## Every block in this family shares the following.

| Specification | Value |
| --- | --- |
| Base material | Nickel-plated electrolytic copper – corrosion-resistant, compatible with mixed-metal loops. |
| Top material | POM Acetal – chemically resistant, dimensionally stable under operating temperature range. |
| Mounting bracket | Stainless steel · included in box · covers both socket generations per block SKU. |
| Ports | G1/4″ · top-mounted · integrates with EK-Pro QDC kits and manifolds. |
| Working pressure | 2 500 Pa working · 30 000 Pa max in loops with EK-Pro Pump Reservoir Manifold · 75 000 Pa max otherwise. |
| Country of origin | Manufactured in Komenda, Slovenia. |