TP-Link Archer AX21 vs AX3000: which one should you buy?
Both are popular dual-band WiFi 6 routers from TP-Link with four antennas and beamforming, and both need a separate modem or your provider's gateway. The AX3000 is the step up: roughly double the 5 GHz speed plus VPN support.
Quick verdict
TP-Link Archer AX21 (AX1800)
Choose the Archer AX21 if your internet plan is under about 500 Mbps and you want a reliable WiFi 6 upgrade at the lowest price.
See price on Amazon
TP-Link AX3000 (Archer AX55)
Choose the AX3000 if you have fast fiber, many devices at once, or want VPN server and client support.
See price on AmazonSide-by-side comparison
| Feature | TP-Link Archer AX21 (AX1800) | TP-Link AX3000 (Archer AX55) |
|---|---|---|
| WiFi standard | WiFi 6, dual band | WiFi 6, dual band |
| 5 GHz speed | Up to 1200 Mbps | Up to 2402 Mbps |
| 2.4 GHz speed | Up to 574 Mbps | Up to 574 Mbps |
| Antennas | 4 high-gain, beamforming | 4 high-gain, beamforming |
| VPN | Not listed | VPN server and client |
| Extras | OFDMA | OFDMA, Target Wake Time, larger heat sink, Alexa |
| 6 GHz band | No | No |
| Modem included | No | No |
| Amazon rating | 4.4/5 | 4.4/5 |
Speed: does it matter for you?
The AX3000 roughly doubles the 5 GHz speed, up to 2402 Mbps versus 1200 Mbps. That only shows up if your internet plan is fast (for example gigabit fiber) or you move big files between devices at home. For typical plans and streaming, the AX21 is already a clear upgrade over an old router.
Extra features
The AX3000 adds VPN server and client support, Target Wake Time to save battery on compatible devices, a larger heat sink for steady performance and Alexa voice control. The AX21 keeps it simple with OFDMA and beamforming.
What both lack
Neither includes a modem, and neither has the 6 GHz band used by WiFi 6E. For large or multi-story homes, a mesh system covers more area than any single router.
Which one should you buy?
Archer AX21 is better for
- Apartments and small to medium homes
- Internet plans under about 500 Mbps
- The lowest-cost WiFi 6 upgrade
AX3000 is better for
- Gigabit fiber plans
- Busy homes with many devices
- People who use a VPN at home
Frequently asked questions
Do these routers include a modem?
No. Both need a separate modem or your provider's gateway.
Is the AX3000 worth it over the AX21?
If you have fast internet or need VPN support, yes. For typical plans, the AX21 covers most homes.
Do they support WiFi 6E?
No, both are dual-band WiFi 6 without the 6 GHz band.
How this comparison was made: we compared the manufacturers' official specifications and public Amazon buyer ratings for both products. We haven't tested these units hands-on. Features listed as not specified simply aren't mentioned in the Amazon listing we checked. Check the latest price and details on Amazon before you buy.
Want more options? See all products in our computing buying guide.