Wireless ink tank printers have made cartridge-free printing a realistic option for homes and small offices. HP offers two all-in-one printer-scanner models that are easy to mix up: the Smart Tank Plus 651 and the Smart Tank 6001. Both are refillable ink tank machines, both connect wirelessly, and both ship with Original HP ink in the box. The difference is in how they handle your everyday workflow, so the right choice depends on which extras you'll actually use.
Quick verdict
Choose the HP Smart Tank Plus 651 for the lower upfront price. Choose the HP Smart Tank 6001 when you want the model with more productivity features. The table below shows exactly where the extra money goes.
Comparison table
| Model | Price | Price bar | Black print speed | Connectivity | Notable features |
| HP Smart Tank Plus 651 | $174.99 | | 11 ppm | Wireless, USB 2.0 | Scanner, fax |
| HP Smart Tank 6001 | $199.99 | | 12 ppm | Wireless, Bluetooth, HP Jetdirect, USB 2.0 | Scanner, copier, duplex, portable |
Where each product wins
Up front, the Smart Tank Plus 651 is the one that asks for less money. The Smart Tank 6001 is the one with the longer list of productivity tools. Neither choice is wrong; the right answer depends on whether you prefer to save on the purchase price or add more options to the machine.
Product notes
HP Smart Tank Plus 651
At $174.99, the HP Smart Tank Plus 651 is the lower-priced way into HP's ink tank lineup. It is built around home-office basics: printing, scanning, and faxing, with wireless and USB 2.0 connections. HP includes three years of Original HP ink in the box, rated for up to 8,000 color pages and 6,000 black pages, which takes refill worries off the table for a long stretch. The scanner uses a Contact Image Sensor, and the printer is backed by a two-year manufacturer warranty. The main trade-off is speed: black output is rated at 11 ppm, so long text documents will take a little longer to finish than they would on the 6001. If that's not a bottleneck for you, this model delivers a lot of everyday capability for a lower price.
HP Smart Tank 6001
The HP Smart Tank 6001 sits at the higher end of this matchup at $199.99. Its black print speed is rated at 12 ppm, and color printing can reach 4800 x 1200 optimized dpi when you print from a computer, so it's positioned for people who print regularly and want sharp-looking documents. The connection set is broader too, with Bluetooth and HP Jetdirect alongside wireless and USB 2.0. It also adds duplex, copier, and portable modes, making it a stronger fit for a family desk or a small shared workspace. HP includes up to two years of Original HP ink in the box. The trade-off is the higher price: at $25 more than the Plus 651, it only makes sense if you'll actually use the faster output and extra tools.
Final choice by use case
Buy the HP Smart Tank Plus 651 if you want the lower upfront cost and a machine that handles everyday printer-scanner duties without extra features. Buy the HP Smart Tank 6001 if you will use the additional productivity tools and connection options. Both are HP ink tank printers with long-lasting ink supplies, so your best bet is the one that matches the way your desk actually works.
