Updated September 30, 2026 · TariffCue Editorial Team
Optimum vs sim.de
Optimum vs sim.de: the differences
| Compare | Optimum ReviewSee alternativesSee alternatives | |
|---|---|---|
| Top download speed (Mbps) | 8,000Higher | 1,000 |
| Price from | $30 | €6.99 |
| Reference plan prices | 300 Mbps Internet: $30/mo, 300 Mbps, no contract; 500 Mbps Internet: $40/mo, 500 Mbps, no contract; 8 Gig Fiber Internet: $90/mo, 8000 Mbps, no contract | 25 GB: 6.99 EUR/month, 25 GB, 1 month; 50 GB: 9.99 EUR/month, 50 GB, 24 months; Unlimited on demand: 19.99 EUR/month, unlimited, 24 months |
| Setup fee | $150 | €49.99 |
| Router | Rent up to $14/mo unless you opt out | FRITZ!Box 7510, 7630 or 7690, from 4.99 EUR per month, optional |
| Markets | US | DE |
| Upload speed (Mbps) | Not confirmed | 5.8 to 40 |
| Mid-contract price rises | Price increases after promo period ends | Not confirmed |
| Exit fee terms | No contracts - cancel without early termination fees | Not confirmed |
| Address checker | Not confirmed | https://www.sim.de/glasfaser |
We earn a commission when you sign up through links on this site. Partner status can affect where a brand appears in our rankings.
Key differences
- Optimum scores higher overall: 9.3 vs 8.9.
- Top download speed (Mbps) is higher at Optimum: 8,000 vs 1,000.
- Founded is lower at Optimum: 1996 vs 2014.
- Technology: only Optimum offers Cable.
- Technology: only sim.de offers Fttc.
- Contract length: only sim.de offers 24.
- Markets: only Optimum offers US.
- Markets: only sim.de offers DE.
Our verdict on each
Optimum
Optimum suits US households that want a fast line with no contract attached, and its top plan reaches 8,000 Mbps. What you weigh is the joining cost: a setup fee of $150 and a router that is rented unless you opt out.
sim.de
sim.de suits people in Germany who want a cheap sim only line with a monthly option and a fixed contract choice on the same tariff sheet. It runs on the 1&1 network, and its entry price of €6.99 sits well under the market median for entry pricing.
Score breakdown
| Area | Optimum | sim.de |
|---|---|---|
| Cost | 8.6Entry price of $30 looks fair, but Price increases after promo period ends and a $150 setup fee weigh on the total. | 9.1HigherEntry at €6.99 and unlimited at €19.99 both sit under the site medians of €9.30 and €23.19. |
| Offer | 9.8HigherSpeeds of 8,000 Mbps on terms of 1 month, with both cable and fibre available. | 9.0Sim only, 5G and Esim are available, with included roaming across 33 countries and terms of 1 and 24. |
| Trust | 9.8HigherA US operator trading since 1996 under Optimum Communications, Inc., with US as its market. | 8.4Run by Drillisch Online GmbH since 2014, an mvno on the 1&1 network with support on email, chat and phone. |
Positions in our rankings
| Ranking | Optimum | sim.de |
|---|---|---|
| Broadband providers | 36 of 124 | 7 of 124 |
| Full fibre providers | 23 of 107 | 6 of 107 |
| Broadband without a long contract | 15 of 46 | 4 of 46 |
Pick Optimum if, pick sim.de if
Pick Optimum if offer and top download speed (mbps) matter most.
Pick sim.de if cost matter most.
If neither fits
Singtel has top download speed (mbps) at 10,000, against 8,000 for Optimum and 1,000 for sim.de.
Singtel reviewEvery fact side by side
| Fact | Optimum | sim.de |
|---|---|---|
| Technology | Cable, Fttp | Fttc, Fttp |
| Contract length | 1 | 1, 24Covers more |
| Legal entity | Optimum Communications, Inc. | Drillisch Online GmbH |
| Headquarters | United States | Germany |
| Founded | 1996Lower | 2014 |
| Support channels | Not confirmed | Email, Chat, Phone, Help centre |
Where each stands against the rest
| Fact | Optimum | sim.de | Median |
|---|---|---|---|
| Top download speed (Mbps) | 8,000highest quarter | 1,000at the median | 1,000 |
| Upload speed (Mbps) | Not confirmed | 5.8 to 40lowest quarter | 900 |
Median across 116 listed providers.
Pros and cons
Optimum
Pros
- No contract: No contracts - cancel without early termination fees, so moving or switching does not cost an early termination charge.
- Top-end speed: 8,000 Mbps, well above Astound at 5,000 Mbps.
- Choice of line type: cable and fttp, so cable and fibre both come from one provider.
Cons
- Setup fee of $150 ranks 86 out of 86 on the site's setup fee table, the expensive end of that list.
- Rent up to $14/mo unless you opt out adds a monthly equipment cost unless you opt out and bring your own kit.
- Renewal risk: Price increases after promo period ends, so the figure you pay after the promo period can sit above the $30 entry price.
sim.de
Pros
- Entry pricing of €6.99 is below the site median of €9.30
- The Unlimited on demand plan costs €19.99, under the site median unlimited price of €23.19
- Contract terms run 1 and 24, so a plan can sit on a monthly term or a longer one
Cons
- The Unlimited on demand plan is tied to the longer of 1 and 24, so unlimited data is not offered on a monthly term
- Service runs in DE only, so the tariffs are not offered outside that market
- As an mvno, sim.de sells on the 1&1 network rather than owning it, unlike the network operators getesa, yesss! and Lonestar Cell MTN
Who each suits
Optimum
Who it suits
- Households that want a very fast line but no long commitment, and would otherwise settle for Astound at 5,000 Mbps.
- People likely to move or switch provider often, since No contracts - cancel without early termination fees keeps leaving cheap.
- US households that want one provider for both cable and fibre lines: cable and fttp.
Who should look elsewhere
- Buyers outside US, who can compare EarthLink instead for fttp, 5G and satellite and a wider choice of ways to connect.
- Fibre-only buyers, who may prefer Abissnet running fttp across its footprint.
- Shoppers who want no joining bill, since the $150 setup fee ranks 86 out of 86 and Astound's terms are worth checking first.
sim.de
Who it suits
- People in DE who want a data heavy sim only line without paying for a handset
- Travellers from DE who want roaming included and reach across 33 countries
- Households that want one provider offering both a short monthly term and a longer fixed contract
Who should look elsewhere
- Buyers outside DE, since the service is a single market
- People who want a handset bundled with the tariff, as the plans are sim only
- Buyers who want unlimited data on a rolling monthly basis, since the Unlimited on demand plan sits on the longer of 1 and 24
Country by country
| Country | Optimum | sim.de |
|---|---|---|
| United States | Yes | No |
Questions about each
Optimum
What does Optimum cost to get started?+
The entry price is $30 a month, the cheapest plan on the list. Installation is a separate setup fee of $150. Budget for both in the first month, because the setup cost does not appear in the monthly price and it sits at the expensive end of the site's setup fee table.
Do I have to sign a contract with Optimum?+
Contract terms apply: No contracts - cancel without early termination fees. Plan terms are listed as 1 month, so the commitment is measured in months rather than years. That makes Optimum a straightforward option if you expect to move home, since leaving does not trigger an early termination charge.
sim.de
How much does a sim.de sim only plan cost to start with?+
The cheapest way in is the entry data plan at €6.99 per month, and it can run on a monthly term rather than a long contract. The larger data plan and the Unlimited on demand plan sit on the longer of 1 and 24 instead.
How much is unlimited data on sim.de?+
The Unlimited on demand plan costs €19.99 per month, and it is tied to the longer of the contract options, 1 and 24. That price sits under the site median unlimited price of €23.19, but the commitment is the part to weigh.
Other options to compare
Other matchups
- Optimum vs GOMO by Singtel
- Optimum vs Kinetic
- Optimum vs 4th Utility
- Optimum vs RED by SFR
- Optimum vs TalkTalk
- Optimum vs OiSTER
- Optimum vs EarthLink
- Optimum vs Odido Thuis
- Optimum vs toob
- Optimum vs Frontier Communications
- Optimum vs hollandsnieuwe
- sim.de vs Abissnet
- Optimum vs YouFibre
- Optimum vs Astound
- sim.de vs MobileX
- sim.de vs yallo
- sim.de vs Lycamobile
- sim.de vs nju Mobile
- sim.de vs Budget Thuis Internet
- sim.de vs ho. Mobile
- sim.de vs Twigby Mobile
- Optimum vs PremiumSIM
- sim.de vs 1pMobile
- sim.de vs Budget Energie
- sim.de vs Lyca Mobile
- Optimum vs Eni Plenitude
- sim.de vs Singtel
- sim.de vs EE Store
- sim.de vs beeline
- sim.de vs Vectra