Realtek is unique among hardware manufacturers — almost every Windows user has Realtek drivers installed without realising it. The Taiwanese semiconductor manufacturer dominates two everyday areas: onboard audio (the audio output of motherboards) and onboard Ethernet (the network port). Three out of four PCs have at least one Realtek chip — often more.
Realtek at a glance
Realtek Semiconductor Corporation was founded in 1987 in Hsinchu, Taiwan and is a pure semiconductor manufacturer — Realtek does not sell devices to end customers. Realtek chips are integrated by motherboard manufacturers (Asus, MSI, Gigabyte, ASRock), laptop manufacturers (Lenovo, Dell, HP, Acer) and many others.
Contact and driver sources
Realtek Semiconductor Corp.
No. 2, Innovation Road II
Hsinchu Science Park, Hsinchu 300, Taiwan
Driver download: realtek.com/de
Note: Realtek often supplies drivers via the device manufacturer (motherboard, laptop). Always check there first.
Realtek audio drivers
The most common Realtek codec chips:
- ALC1220 — found on many gaming motherboards from 2018–2022
- ALC4080 — current top class for high-end motherboards
- ALC897 — entry-level segment
- ALC256/ALC257 — laptop standard
UAD vs HDA — two driver variants
Realtek currently provides audio drivers in two architectures:
- Realtek HD Audio (HDA) — classic driver, all features, but older architecture. Most common on motherboards from 2020 and earlier.
- Realtek Universal Audio Driver (UAD) — modern, follows the new Universal Driver framework from Microsoft. Better Windows 11 integration, faster, more stable. Required on most laptops since 2021.
Important: do not mix UAD and HDA. If you have UAD running, don't install an HDA driver afterwards — and vice versa. The two variants conflict.
AVG Driver Updater detects whether your system uses UAD or HDA and selects the right driver — no conflict.
Realtek LAN drivers
Realtek LAN chips power most onboard 1 Gbit/s and 2.5 Gbit/s ports on motherboards and laptops. The most common controllers:
- RTL8111H / RTL8168 — 1 Gbit/s, the workhorse for over a decade
- RTL8125B — 2.5 Gbit/s, current standard on gaming motherboards
- RTL8126 — 5 Gbit/s, high-end
Installing Realtek drivers correctly
Audio
- First check whether your motherboard or laptop manufacturer provides current audio drivers — these are usually optimised for your specific hardware.
- If not: identify your Realtek codec via Device Manager (e.g. ALC1220) and download the matching driver from Realtek directly.
- Install. Reboot.
- The Realtek Audio Console (or Realtek Audio Control) appears in the Microsoft Store — install it for full control.
LAN
Realtek LAN drivers are simpler — Windows usually installs a working version automatically. For full performance and energy management features the Realtek-specific driver is recommended.
Common problems with Realtek drivers
No sound after Windows update
Classic problem after Windows feature updates. Solutions in order:
- In Device Manager → Sound → Realtek device → right-click → Roll back driver
- If unavailable: install the latest Realtek Audio Driver from the device manufacturer
- Reset Windows audio service:
net stop AudioSrv+net start AudioSrv(as administrator) - For very stubborn problems: completely uninstall the audio driver, reboot, let Windows install the standard driver, then upgrade to the manufacturer driver
Microphone too quiet despite max boost
Realtek microphone settings are often spread across several places: Windows Sound settings, Realtek Audio Console, and (on some laptops) an additional manufacturer audio app. Tip: in Windows Sound settings → Recording → Realtek microphone → Properties → Levels move both Microphone and Microphone Boost. Microphone Boost is often the missing piece.
UAD and HDA conflict
If you accidentally have both driver variants installed, audio might glitch or features missing. Solution: uninstall both, reboot, then install only one variant. Manufacturers like MSI and Asus usually publish a "complete bundle" — use that.
LAN connection slower than promised
For RTL8125B (2.5 Gbit/s) it occasionally happens that Windows only shows 1 Gbit/s. Cause: cable or switch port doesn't support 2.5 Gbit/s. Test: in Device Manager → Network adapter → Realtek 2.5 GbE → Advanced → Speed & Duplex set to 2.5 Gbps Full Duplex. If the connection breaks: cable/switch is the problem.
Which Windows versions are supported?
- Windows 11 — fully, with UAD as standard architecture.
- Windows 10 — fully, both UAD and HDA available.
- Windows 7 / 8.1 — older HDA versions still available for legacy hardware.
- Linux — Realtek audio is integrated into the ALSA kernel module; LAN works via the r8169 kernel module. Both very stable.
Current version and version history
Realtek Audio Driver — typical recent versions
| Version | Approx. release | Type |
|---|---|---|
| 6.0.9618.1 | Early 2026 | HD Audio (HDA) |
| 6.0.9543.1 | Q4 2025 | HD Audio (HDA) |
| 6.0.9468.1 | Q3 2025 | HD Audio (HDA) |
| UAD 6.0.9618 | Early 2026 | Universal Audio Driver |
| UAD 6.0.9543 | Q4 2025 | Universal Audio Driver |
Further sources
Authoritative sources for deeper information:
Frequently asked questions
Open Device Manager (Win + X → Device Manager). Under Sound, video and game controllers you'll typically see Realtek (R) Audio or similar. Under Network adapters often Realtek PCIe GbE.
If your laptop or motherboard already has UAD installed: stay with UAD. If only HDA is available: stay with HDA. Don't mix the two variants.
The Realtek Audio Console is only available for systems with UAD. With HDA you use the older Realtek HD Audio Manager (control panel). On modern laptops UAD + Audio Console is the standard.
Three checks: (1) Windows Sound → Recording → Realtek microphone enabled? (2) Sound → Recording → Properties → Levels: Microphone Boost > 0? (3) Privacy settings → Microphone → Apps allowed?
For office work: optional. For gaming, streaming or 2.5G-Ethernet: yes — the Realtek-specific driver brings full speed and Energy-Efficient-Ethernet features.
Realtek Wi-Fi chips (RTL8821CE, RTL8852BE, etc.) are widespread in budget laptops and have had performance issues over the years. Always use the laptop-specific driver from the manufacturer (Lenovo, HP, Acer), not from realtek.com directly — these are matched to the hardware.