# Thermal paste QOLTEC 51656, thermal conductivity 5.15 W/m·K, 5 g, grey

**URL:** https://aio.lv/en/product--qoltec-51656--767848
**Data updated:** 2026-03-07 10:54 (EET)
**Category:** Thermal Paste
**Manufacturer:** QOLTEC
**Manufacturer code:** 51656
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 13.49 €
**Prices and availability valid until:** 2026-07-09 23:59
**Price without VAT (21%):** 11.15 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--qoltec-51656--767848

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 29.06.2026 | free |
| Pickup points | 02.07.2026 | 1.99 EUR |
| Courier delivery to door | 02.07.2026 | 4.99 EUR |

## Summary description

QOLTEC 51656 is a grey thermal paste for improving heat transfer between CPUs, GPUs and cooling solutions. It has thermal conductivity 5.15 W/m·K and low thermal resistance (~0.004 °C/W). Supplied in a 5 g tube, the compound is suitable for desktop and laptop processor cooling, graphics cards and small electronic components requiring efficient thermal interface material.

## Long description

QOLTEC 51656 is a grey thermal paste designed to improve heat transfer between processors, graphics chips and their cooling solutions. With a thermal conductivity of 5.15 W/m·K and low thermal resistance (approximately 0.004 °C/W), this compound fills microscopic gaps at the interface to reduce operating temperatures. Supplied in a 5 g tube, the product is suitable for desktop and laptop CPUs, GPUs and other small electronic components that require an efficient thermal interface material.
Advantages
The paste combines relatively high thermal conductivity with electrical insulation, enabling reliable heat conduction without creating conductive paths. It spreads easily and consistently to fill micro-gaps between contact surfaces. QOLTEC 51656 maintains its properties over extended use and does not require frequent replacement under normal operating conditions. Its grey colour makes application and coverage verification straightforward.
Suitable for
 Thermal interface between CPUs and heatsinks in desktop computers
 Cooling contact for laptop processors and compact systems
 Thermal coupling for graphics cards (GPUs)
 Heat transfer for small electronic components and power modules
Key specifications
 Thermal conductivity: 5.15 W/m·K
 Thermal resistance: ~0.004 °C/W
 Net weight: 5 g
 Colour: grey
 Form: paste in squeezable tube for controlled application
How to use
Clean both mating surfaces thoroughly to remove old paste, dust and grease using isopropyl alcohol and a lint-free cloth. Apply a small, pea-sized amount of QOLTEC 51656 to the centre of the processor or component. Mount the heatsink or cooler and apply even pressure to spread the compound; avoid excessive re-positioning once contact is made. After installation, verify proper seating of the cooler and monitor temperatures during initial operation to ensure correct thermal performance.
Usage recommendations
For best results, use a thin, even layer of thermal paste and avoid over-application, which can reduce cooling efficiency. Store the tube capped in a cool, dry place and avoid contamination of the nozzle. Replace the paste if the cooler is removed for maintenance or if thermal performance degrades over time.

## Specifications

### Features

| Feature | Value |
|---|---|
| Product colour | Grey |
| Thermal resistance | 0.004 °C/W |
| Thermal conductivity | 5.15 W/m·K |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.005 kg |

### Packaging data

| Feature | Value |
|---|---|
| Quantity per pack | 1 pc(s) |

## FAQ

### How much does the QOLTEC 51656 thermal paste 5.15 W/m·K 5 g cost, and is it available for purchase?

The price is 13.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 6 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 29.06.2026 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

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: thermal conductivity, weight, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/767848/56507620_large.webp