If you’re comparing Quantum Fiber vs Xfinity, the biggest difference is the type of network each provider uses.
Quantum Fiber offers a 100% fiber-optic connection, while Xfinity uses a fiber-powered network with coaxial connections in areas covered by the service described here.
Both providers offer unlimited data and no annual contracts, but their plans and included benefits are different.
Here’s how Quantum Fiber and Xfinity compare on pricing, speeds, network technology, WiFi equipment, and other features.
Table of Contents
Quantum Fiber Overview

Quantum Fiber offers fiber internet with unlimited data and no annual contract.
Its plans include:
- 500 Mbps
- 1 Gig
- 2 Gig in select areas
- 100% fiber-optic network
- Symmetrical upload and download speeds on applicable plans
- Unlimited data
- WiFi 7 through 360 WiFi
- No bundling requirement
Eligible customers can also receive up to $480 per year in AT&T Wireless savings through applicable offers.
The main feature that separates Quantum Fiber from Xfinity is its fiber connection.
With fiber, the connection can provide much faster upload speeds than traditional cable-based connections, which can matter if you regularly upload large files or create online content.
Xfinity Overview
Xfinity offers several internet plans at different speed tiers.
The plans covered in this comparison include:
- 300 Mbps
- 500 Mbps
- 1 Gig
Xfinity’s advertised plans include:
- Unlimited data
- WiFi equipment
- No annual contract
- 5-Year Price Guarantee
- Mobile and entertainment benefits on eligible offers
Some eligible offers can also include a free Xfinity Mobile line for one year and Peacock Premium on select plans.
The exact benefits can depend on the offer and eligibility requirements.
Quantum Fiber vs Xfinity: Pricing
Based on the offers in this comparison, Quantum Fiber and Xfinity have similar pricing at some speed tiers.
Quantum Fiber Pricing
Quantum Fiber’s advertised 1 Gig promotional offer is $45 per month.
A 2 Gig plan is also available in select areas.
Xfinity Pricing
Xfinity’s advertised pricing includes:
| Xfinity Plan | Monthly Price |
|---|---|
| 300 Mbps | $40 |
| 500 Mbps | $45 |
| 1 Gig | $50 |
Based on these supplied offers, Quantum Fiber’s 1 Gig plan is $5 cheaper per month than Xfinity’s 1 Gig plan.
That works out to a $60 difference over 12 months, before considering taxes, fees, promotional conditions, or other discounts.
However, availability and promotional pricing can vary by location.
Quantum Fiber vs Xfinity: Speed and Performance
Network technology is one of the biggest differences between these providers.
Quantum Fiber
Quantum Fiber uses a 100% fiber-optic network.
On applicable plans, it offers symmetrical upload and download speeds.
For example, a 1 Gig fiber plan can provide up to gigabit-level upload and download speeds where the plan supports symmetrical service.
This can be particularly useful for:
- Remote workers
- YouTubers and content creators
- Gamers
- Video editors
- People who upload large files
- Households with heavy upload requirements
Uploading a large video, backing up files to the cloud, or participating in video calls can benefit from stronger upload performance.
Xfinity
Xfinity’s network is also fiber-powered, but the connection to the premises can use coaxial cable.
This is different from a full fiber-to-the-home connection.
Xfinity can still provide fast download speeds, including gigabit-level service, but upload performance can differ from a symmetrical fiber connection.
If you mostly browse websites, stream video, use social media, and download files, download speed may be the more important factor.
If you regularly upload large files, the difference becomes more noticeable.
Quantum Fiber vs Xfinity: WiFi Equipment
Quantum Fiber offers WiFi 7 through 360 WiFi with applicable service.
Xfinity also includes WiFi equipment with the plans described here.
This means you don’t necessarily need to purchase a separate router immediately after signing up with either provider.
The actual WiFi performance in your home will still depend on factors such as the equipment, home layout, walls, interference, connected devices, and placement.
Your internet plan speed and your WiFi speed are also not always the same thing.
Quantum Fiber vs Xfinity: Data and Contracts
Both providers offer unlimited data on the plans covered in this comparison.
Neither requires an annual contract for these offers.
This means you don’t have to choose between a cheaper contract plan and a more expensive month-to-month option.
However, you should still review the terms of the specific offer you’re signing up for, particularly if it includes promotional pricing or additional benefits.
Xfinity’s Price Guarantee and Perks
One of Xfinity’s major selling points is its 5-Year Price Guarantee on applicable advertised offers.
This can make monthly budgeting easier if the offer you qualify for includes the guarantee.
Xfinity also has additional services that can add value depending on what you already use.
Eligible offers may include:
- Xfinity Mobile promotions
- A free Xfinity Mobile line for one year
- Peacock Premium on select plans
- Included WiFi equipment
These benefits can make the total value different from simply comparing the internet price.
Quantum Fiber’s Additional Benefits
Quantum Fiber doesn’t require you to bundle other services to get its internet service.
Eligible customers can also receive up to $480 per year in AT&T Wireless savings under applicable offers.
The exact savings and eligibility requirements should be checked before signing up.
If you already use eligible AT&T Wireless service, this benefit could affect the overall cost of your internet and mobile services.
Which One Should You Choose?
The answer depends on what you value most from your internet connection.
Choose Quantum Fiber if you:
- Want a 100% fiber-optic connection
- Need fast upload speeds
- Upload large files regularly
- Work from home
- Create YouTube or other video content
- Want symmetrical speeds on applicable plans
- Need a 2 Gig option where available
Choose Xfinity if you:
- Want a lower-priced entry-level plan
- Want several speed options
- Value a 5-Year Price Guarantee on eligible offers
- Want WiFi equipment included
- Can benefit from Xfinity Mobile promotions
- Want entertainment perks such as Peacock Premium on select plans
Quantum Fiber vs Xfinity: Quick Comparison
| Feature | Quantum Fiber | Xfinity |
|---|---|---|
| Network | 100% fiber | Fiber-powered, coaxial connection in supplied offer |
| Plans | 500 Mbps, 1 Gig, 2 Gig* | 300 Mbps, 500 Mbps, 1 Gig |
| 1 Gig price | $45 promotional | $50 |
| Unlimited data | Yes | Yes |
| Annual contract | No | No |
| Upload speeds | Symmetrical on applicable plans | Varies |
| WiFi | WiFi 7 through 360 WiFi | WiFi equipment included |
| Price guarantee | Not highlighted in supplied offer | 5 years on applicable offers |
| Mobile perks | AT&T Wireless savings for eligible customers | Xfinity Mobile offers |
| Entertainment perks | Not highlighted | Peacock Premium on select plans |
*2 Gig availability is limited to select areas.
Video Guide:
FAQs
Is Quantum Fiber faster than Xfinity?
It depends on the specific plans and location, but Quantum Fiber’s 100% fiber network and symmetrical speeds can provide a major advantage for upload-heavy activities. Xfinity generally focuses more heavily on high download speeds.
Is Quantum Fiber cheaper than Xfinity?
Based on the offers compared here, Quantum Fiber’s 1 Gig promotional price is $45 per month, while Xfinity’s 1 Gig plan is $50 per month. Actual pricing can vary by location and eligibility.
Does Xfinity use fiber?
Xfinity uses fiber throughout its network, but its connection to the home can use coaxial cable. Therefore, Xfinity’s fiber-powered service isn’t necessarily the same as a fiber-to-the-home connection.
Does Quantum Fiber have unlimited data?
Yes. The Quantum Fiber plans covered in this comparison include unlimited data.
Final Thoughts
The main difference between Quantum Fiber and Xfinity is network technology.
Quantum Fiber uses a 100% fiber-optic network and offers symmetrical speeds on applicable plans. That makes it particularly relevant if you work from home, upload large files, create videos, or need strong upload performance.
Xfinity offers a wider range of advertised speed options, along with WiFi equipment, a 5-Year Price Guarantee on applicable offers, and additional mobile and entertainment benefits.
Based on the supplied offers, Quantum Fiber’s 1 Gig plan is also $5 less per month than Xfinity’s 1 Gig plan.
Before choosing either provider, check your exact address. Availability, pricing, promotional eligibility, and included benefits can vary significantly by location.