# Thermal compound QOLTEC 51631 — heat sink paste for CPU/GPU cooling

**URL:** https://aio.lv/en/product--qoltec-51631--767824
**Data updated:** 2026-03-07 10:54 (EET)
**Category:** Thermal Paste
**Manufacturer:** QOLTEC
**Manufacturer code:** 51631
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 3.99 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 3.30 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--qoltec-51631--767824

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 30.06.2026 | free |
| Pickup points | 03.07.2026 | 1.99 EUR |
| Courier delivery to door | 03.07.2026 | 4.99 EUR |

## Summary description

QOLTEC 51631 is a heat sink thermal compound designed to improve thermal transfer between processors and cooling solutions. As a paste-based interface material, it fills microscopic gaps between CPU/GPU surfaces and heatsinks to enhance heat dissipation and maintain stable operating temperatures. Suitable for PC builds, repairs and upgrades where reliable thermal conduction is needed.

## Long description

QOLTEC 51631 is a thermal compound formulated to improve heat transfer between CPUs or GPUs and their cooling systems. As a paste-based interface material, it fills microscopic gaps and surface imperfections between the processor heat spreader and heatsink base to promote efficient thermal conduction and help maintain stable operating temperatures in desktop PCs and laptops. The compound combines thermal conductivity with electrical insulation and is designed for straightforward application and long-term use without frequent replacement.
Advantages
The thermal paste offers high thermal conductivity while providing electrical insulation, reducing the risk of short circuits in tight component layouts. Its consistency allows it to perfectly fill micro-gaps and surface irregularities for consistent contact between the chip and heatsink. The formula is easy to apply and spread, and remains stable over time so it does not dry out or degrade quickly under normal operating conditions.
Suitable for
Desktop CPU cooling during builds, upgrades or maintenance
GPU cooling and replacement of old thermal material
Cooling solutions in small form-factor PCs and embedded systems
Repair shops and technicians performing thermal interface replacement
Key specifications
Form: paste
Primary function: thermal interface material for processors and heatsinks
Thermal properties: high thermal conductivity combined with electrical insulation
Application: manual spread or pressure-based seating between heat spreader and heatsink
Durability: formulated for long-term stability without rapid drying or loss of properties
How to use
Clean both the processor heat spreader and the heatsink base from old compound, dust and oils using isopropyl alcohol and a lint-free cloth. Apply a small pea-sized amount of QOLTEC 51631 to the centre of the CPU or evenly along the GPU die, then mount and secure the heatsink according to the cooler manufacturer’s instructions. The mounting pressure will spread the paste to form a thin, uniform thermal interface. If needed, gently spread the paste with a suitable applicator before mounting to ensure coverage without excess overflow.
Usage recommendations
Use a minimal, even quantity to avoid excess compound that could reduce thermal transfer. Replace the thermal paste when removing or reseating the cooler, or if thermal performance shows noticeable degradation. Store the product in a cool, dry place and keep the cap tightly closed to preserve consistency.

## FAQ

### How much does the Thermal compound QOLTEC 51631 cost, and is it available for purchase?

The price is 3.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 30.06.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All QOLTEC products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized QOLTEC service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### Where can I download the instructions for Thermal compound QOLTEC 51631?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/767824/56507601_large.webp