The Best PCIe WiFi Cards to Supercharge Your Desktop‘s Wireless Speeds

While many modern desktop motherboards come with built-in WiFi these days, the included wireless hardware isn‘t always the fastest or most reliable. Whether you‘re building a new PC or upgrading an older machine, installing one of the best PCIe WiFi cards can make a huge difference in your wireless speeds and coverage.

Newer WiFi standards like 802.11ac (now known as WiFi 5) and 802.11ax (WiFi 6) have enabled dramatic improvements in maximum throughput, signal range, network capacity and efficiency compared to older protocols. Equipping your desktop with a quality PCIe adapter allows you to take full advantage of these cutting-edge wireless capabilities.

As an electrical engineer turned software developer who has built many PCs over the years, I‘ve had hands-on experience with numerous WiFi cards. Here are my expert recommendations on the best PCIe WiFi adapters for every need and budget. I‘ll also share some tips on what to look for in a wireless card and how to get the most out of it.

The Latest WiFi Standards Explained

The two most current WiFi protocols are 802.11ac and 802.11ax:

• 802.11ac (WiFi 5) – Finalized in 2014, 11ac has been the dominant standard in recent years. It operates exclusively in the less crowded 5 GHz band and introduced technologies like MU-MIMO and beamforming for improved performance. 11ac routers and devices support maximum (theoretical) speeds ranging from 433 Mbps to nearly 7 Gbps.
• 802.11ax (WiFi 6) – Launched in 2019, 11ax is still an emerging standard but will eventually replace 11ac. WiFi 6 operates in both the 2.4 GHz and 5 GHz bands, and brings new features like OFDMA for more efficient traffic scheduling, 1024-QAM for higher throughput, and improved MU-MIMO. WiFi 6 maxes out around 9.6 Gbps (again, in theory).

While 802.11ac has been widely adopted and provides excellent real-world performance, 802.11ax is the future of WiFi and worth considering if you want the absolute latest and greatest tech. However, you‘ll need an 11ax router to get the full benefits.

The Best PCIe WiFi Cards

Here are my top picks for the best PCIe WiFi cards for desktops:

Best Overall: ASUS PCE-AC88

For the ultimate in speed and range, it‘s hard to beat the ASUS PCE-AC88 PCIe adapter. This powerhouse 11ac card is capable of delivering wireless speeds up to a blazing fast 2100 Mbps on the 5 GHz band (and 1000 Mbps on 2.4 GHz).

The PCE-AC88 is a 4×4 card, meaning it has four antennas for transmitting and four for receiving. This allows it to take advantage of advanced 11ac features like MU-MIMO for simultaneously streaming to multiple devices. The magnetized antenna base makes it easy to position the antennas for optimal signal strength and coverage.

Other highlights include a custom heatsink for excellent thermal performance and stability under load, and support for beamforming to further extend range. If you demand the absolute best, the ASUS PCE-AC88 delivers. Just be prepared to pay a premium.

Best WiFi 6: TP-Link Archer TX3000E

Looking to future-proof your desktop for the next generation of wireless? Check out TP-Link‘s Archer TX3000E, a cutting-edge WiFi 6 adapter. It boasts maximum speeds up to 2.4 Gbps on the 5 GHz band and 574 Mbps on 2.4 GHz when connected to an 11ax router.

The TX3000E supports all the latest WiFi 6 technologies, including 1024-QAM, OFDMA, and enhanced MU-MIMO for ultra-fast, ultra-efficient performance. It‘s backward compatible with older standards like 11ac too. The included Bluetooth 5.0 is a nice bonus for connecting wireless peripherals.

TP-Link‘s easy setup and management software make the TX3000E simple to install and use. For early adopters who want to experience the benefits of WiFi 6 on the desktop, this card is an excellent choice. Just keep in mind you‘ll need a WiFi 6 router to really take advantage of those next-gen speeds.

Best Budget: TP-Link Archer T5E

You don‘t have to spend a fortune to seriously upgrade your desktop‘s WiFi capabilities. The TP-Link Archer T5E offers many of the same features as our best overall pick—like 11ac speeds up to 867 Mbps, beamforming, and MU-MIMO—in a more affordable package.

While it‘s not quite as fast as the ASUS card, the T5E still provides outstanding performance for gaming, streaming 4K video, and downloading large files. The dual antennas are adjustable and detachable. TP-Link even throws in Bluetooth 4.2 support.

For around half the price of the top-shelf models, you‘ll be hard-pressed to find a better value than the TP-Link Archer T5E. It‘s an easy and economical way to upgrade an aging desktop to modern 11ac WiFi.

How to Choose the Right PCIe WiFi Card

With dozens of PCIe WiFi adapters on the market, it can be overwhelming to try to find the right one for your needs. Here are the most important factors to consider:

• WiFi standard – 11ac (WiFi 5) offers the best balance of performance and compatibility for now, but 11ax (WiFi 6) is the latest and greatest if you want to be on the cutting edge
• Speed – Look for maximum link rates of at least 1300 Mbps on 5 GHz and 400 Mbps on 2.4 GHz for a good 11ac experience, or 2400 Mbps on 5 GHz and 574 Mbps on 2.4 GHz for WiFi 6
• MIMO – 2×2 MIMO (2 antennas) provides solid performance, while 4×4 MIMO allows for even faster speeds
• Antennas – High-gain, adjustable/movable antennas help you to dial in your signal strength and extend range
• Heatsink – A heatsink can prevent thermal throttling under heavy sustained loads
• Bluetooth – Some cards include Bluetooth 4.x or 5.x as a bonus for connecting headsets, game controllers, etc.
• Brand reputation – Stick with known brands like ASUS, TP-Link, Gigabyte, etc. for the best reliability and support
• Price – expect to pay anywhere from $30 for a basic 11ac card to $90+ for a high-end tri-band 11ax model

Installation and Troubleshooting

Physically installing a PCIe WiFi card is usually quite straightforward – just make sure your PC is powered off, pop off the side panel, locate an empty PCIe slot, and carefully insert the card until it clicks into place. Secure it with a screw if needed.

Where people often run into trouble is with drivers and software. Always install the latest drivers and utility software from the manufacturer‘s website (rather than relying on the included CD). Reboot after installation.

If you‘re having issues with speed or stability, try:

• Updating router firmware
• Repositioning antennas
• Changing WiFi channels on your router
• Power cycling the router and PC
• Reinstalling drivers

Enjoy Peak Wireless Performance

There you have it – everything you need to know to choose the best PCIe WiFi card for your desktop PC. While a hardwired Ethernet connection is still ideal for the fastest, most stable speeds, a quality WiFi adapter gets you pretty darn close. It‘s an especially great investment for gaming, high-res video streaming, and large file downloads.

With the latest 11ac and 11ax cards from respected brands like ASUS and TP-Link, you can enjoy strong, fast, reliable WiFi on your desktop for years to come. Even if your mobile devices may outpace your desktop, you‘ll be ready for the gigabit future of home networking.