SonicWall TZ Series Comparison: TZ270 vs TZ370 vs TZ470 vs TZ570 vs TZ670

Cyber threats keep getting smarter. Businesses need faster, more secure networks just to stay safe. Choosing the right firewall matters more than ever.

The SonicWall TZ Series is one of the most trusted next-generation firewall ranges out there. Small businesses love them. Branch offices rely on them. Distributed enterprises use them too.

But with five models available, which one is right for you?

In this guide, we compare the TZ270, TZ370, TZ470, TZ570, and TZ670. We'll help you pick the best one for your security needs, your network size, and your future plans.

Why Choose SonicWall TZ Series Firewalls?

The TZ Series gives you enterprise-grade security in a small desktop box. These firewalls protect against ransomware, malware, encrypted threats, phishing, and unauthorised access.

And they do it without slowing you down.

Here's what you get:

- Advanced threat protection

- Deep packet inspection

- SSL/TLS traffic inspection

- Intrusion prevention system

- SD-WAN capabilities

- Secure VPN connectivity

- Centralised cloud management

- High-speed multi-gigabit interfaces

The Gen 7 TZ Series was built for today's challenges. More encrypted traffic. More remote workers. Higher network demands.

SonicWall TZ Series Comparison Table

Feature	TZ270	TZ370	TZ470	TZ570	TZ670
Firewall Throughput	2 Gbps	3 Gbps	3.5 Gbps	4 Gbps	5 Gbps
Threat Prevention	750 Mbps	1 Gbps	1.5 Gbps	2 Gbps	2.5 Gbps
IPS Throughput	1 Gbps	1.5 Gbps	2 Gbps	2.5 Gbps	3 Gbps
SSL Inspection	300 Mbps	500 Mbps	600 Mbps	750 Mbps	800 Mbps
VPN Throughput	750 Mbps	1.3 Gbps	1.5 Gbps	1.8 Gbps	2.1 Gbps
Max Connections	750,000	900,000	1,000,000	1,250,000	1,500,000
Multi-Gig Interfaces	No	No	2 x 2.5GbE	2 x 5GbE	2 x 10GbE
Recommended Users	Small	Growing	Medium	Large	Enterprise

 

1- TZ270 – Best for Small Offices

The Sonicwall TZ270 is where the TZ Series starts. It's perfect for:

- Small businesses

- Retail stores

- Home offices

- Startups

- Small branch locations

You get 2 Gbps firewall throughput and 750 Mbps threat prevention. That's strong security without breaking the bank.

It supports up to 50 site-to-site VPN tunnels. All the essential security features are there.

Who should buy it?

Businesses with up to 25 users and internet connections below 500 Mbps.

2- TZ370 – Best Value for Growing Businesses

The TZ370 gives you a big performance jump over the TZ270. But it stays affordable. Here's what you gain:

- 3 Gbps firewall throughput

- 1 Gbps threat prevention

- Better VPN performance

- More VLAN support

- Higher connection capacity

Many people call the Sonicwall TZ370 the sweet spot. It gives you enterprise-level protection while leaving room to grow.

Who should buy it?

Businesses with 25 to 75 users. Especially those using more cloud apps.

3- TZ470 – Ideal for Medium-Sized Organisations

The TZ470 brings something new. 2.5 Gigabit Ethernet interfaces.

That makes it a great fit for businesses that need faster internal networking and deeper security inspection.

What you get:

- 3.5 Gbps firewall throughput

- 1.5 Gbps threat prevention

- 2 x 2.5GbE interfaces

- Up to 150 site-to-site VPN tunnels

- Higher DPI and SSL inspection capacity

If you're moving to faster internet and cloud services, the Sonicwall TZ470 delivers.

Who should buy it?

Businesses with 75 to 150 users. Especially those with hybrid work setups.

4- TZ570 – Built for High-Performance Networks

The TZ570 takes things up a notch. Serious performance. Serious connectivity.

Key specs:

- 4 Gbps firewall throughput

- 2 Gbps threat prevention

- 2 x 5GbE interfaces

- PoE models available

- Better VPN and SSL inspection

IT pros often recommend the Sonicwall TZ570 for fast-growing organisations. It gives you headroom for future bandwidth needs. Many choose it when planning for gigabit internet.

Who should buy it?

Businesses with 150 to 250 users. Especially those with multi-site setups.

5- TZ670 – The Ultimate Desktop NGFW

This is the big one. The most powerful desktop firewall in the TZ family.

What makes it special:

- 5 Gbps firewall throughput

- 2.5 Gbps threat prevention

- 2 x 10GbE interfaces

- Top SSL inspection performance

- Maximum VPN scalability

- Enterprise-grade branch security

The SonicWall TZ670 is the first desktop SonicWall with 10 Gigabit Ethernet. It's built for large organisations and distributed enterprises.

Who should buy it?

Large businesses, enterprise branches, and anyone with multi-gigabit internet.

Which SonicWall TZ Firewall Should You Buy?

Here's the simple version.

Choose the TZ270 for small offices and startups.

Choose the TZ370 for growing SMBs who want the best value.

Choose the TZ470 for medium businesses that need multi-gig connectivity.

Choose the TZ570 for larger organisations with demanding security needs.

Choose the TZ670 for enterprise branch deployments and top performance.

One piece of advice. Always buy a model with room to grow. Don't just meet today's needs. Plan for tomorrow.

Buy SonicWall Firewalls from Stack Link UK

Stack Link UK supplies genuine SonicWall firewalls. Security subscriptions. Renewals. Deployment solutions. They serve businesses across the UK. Whether you need a TZ270 for a small office or a TZ670 for an enterprise environment, their team can help. Browse their full SonicWall firewall range. Contact their experts for pricing, licensing, installation, and support.

Secure your business today. Get the right SonicWall firewall from Stack Link UK.