Mining done right, since 2019
OPTMIIZ was born in 2017, in the crypto world, and since 2019 has designed, installed and supported Bitcoin mining installations in Portugal. It is the mining brand of RubyOasis, Lda.
Who we are
We started in crypto in 2017 and mining in 2019: first Ethereum with graphics cards, then Antminer, hydro and immersion. We develop, design and install Bitcoin mining systems with a focus on sustainability: the right miners, quiet cooling, properly sized electricity and heat reused instead of thrown away.
We are DCX's official partner in Portugal. The factory sends Portuguese clients and the technical questions from hydro installations to us, because we are the ones who build them on site.
We work with individuals and companies, from the miner who wants two quiet machines at home to installations with dozens of miners and their own energy.
- 96% client retention
- 1 in 2 orders comes from a returning client
- 170 clients and 635 orders
- 43 DCX drycoolers installed and over 100 sold
- Cooling from 15 kW to 2 MW
- Profiles tested up to 188 TH/s on the S19k Pro
- Installations on the mainland and the islands, remote monitoring across Europe
Clients who stay
96% of our clients stay with us. Many became friends, and they ask us before buying a miner, changing the cooling or growing the installation. In Portugal, mining is a small community: trust is earned one installation at a time, and that is what brings clients back.
- We reply on the same working day
- We tell you when a purchase doesn't pay off
- Clear prices: excluding VAT, with an invoice
- We follow up after the sale, remotely or on site
Our history
OPTMIIZ is born
In the crypto world, with one idea: green investment.
Mining and installing
Ethereum with graphics cards and the first Antminers.
First S17 Pro
Importing and installing the first Antminer S17 Pro.
Projects and immersion
Mining projects and immersion systems for clients.
Official DCX partner
DCX drycoolers and immersion in Portugal.
The new OPTMIIZ
43 drycoolers installed, 170 clients, an online shop and remote monitoring across Europe.
What we do
DCX drycoolers and immersion
At the factory's public prices, with a Portuguese invoice and installation.
MinersNew and used miners
At the European reference price, configured and ready to plug in. Page in Portuguese.
InstallationDesign, installation and start-up
Electricity, cooling, hydraulics and technical works.
AutomationMiners that work on their own
Profiles by schedule, sun and noise, and automatic alerts.
RemoteRemote monitoring
Monitoring, alerts and adjustments without a site visit, in Portugal and across Europe.
HeatHeat reuse
Hot water, underfloor heating and pools heated by the miners. Page in Portuguese.
Our partners
We work with people we know and trust, in Portugal and across Europe.
DCX
Drycoolers and immersion systems for mining. We are the official partner in Portugal: we sell at the factory's public prices, install and provide support. See the DCX range.
AsicMinerPlace
Miners, parts, firmware and an ASIC repair lab, with a warehouse in China. We are their partner in Portugal and resell their miners and parts. asicminerplace.com
Resellers and installers
We work with partner resellers and installers, with resale prices and our technical support. Want to join them?
What our clients say
OPTMIIZ's public reviews on Trustpilot, all unprompted. Most are in Portuguese.
«Excelente experiência, muito prestáveis a responder dúvidas e muito profissionais.»«Eles estão sempre prontos para atender, são muito bem informados e prestam um ótimo serviço.»«Empresa credível e profissional.»«Perfect. Very nice people and honest.»
«Serviço rápido e de bastante qualidade. Recomendo.»5 reviews on Trustpilot, all 4 and 5 stars, written by clients without us asking. And OLX listings since 2019.
Questions about OPTMIIZ
Is OPTMIIZ trustworthy?
It is a registered Portuguese company (RubyOasis, Lda, VAT PT515696021), based in Amadora, with 170 clients and 96% client retention. It has 5 unprompted reviews on Trustpilot, all 4 and 5 stars, OLX listings since 2019, and it is DCX's official partner in Portugal.
How long has OPTMIIZ been around?
The brand was born in 2017. We have mined and installed mining since 2019, first with graphics cards and then with Antminer, hydro and immersion.
Who is behind OPTMIIZ?
OPTMIIZ is the mining brand of RubyOasis, Lda, a Portuguese company based in Amadora.
Where are you, and where do you work?
At Economax Office, R. Soeiro Pereira Gomes 3, Atelier Esq., 2720-519 Amadora, Portugal. We install on the mainland and the islands, and monitor installations remotely across Europe, with automatic monitoring and artificial intelligence.
What does OPTMIIZ do?
It sells DCX drycoolers and immersion systems at the factory's public prices, and new and used miners. It handles sizing, electrical design, installation, automation, remote monitoring, maintenance and heat reuse.
Do prices include VAT?
We show prices excluding VAT (23% in Portugal) with the VAT-inclusive total below. Invoices are Portuguese, with your company or personal tax number.
Who are your partners?
DCX, the drycooler and immersion manufacturer, whose official partner in Portugal we are, and AsicMinerPlace in Greece, whose partner in Portugal we are. We also work with resellers and installers.
How do I contact you?
On WhatsApp +351 912 775 777 or by email at asic.optmiiz@gmail.com. We reply on the same working day, in Portuguese or English.
RubyOasis, Lda · OPTMIIZ brand
VAT PT515696021 · Economax Office, R. Soeiro Pereira Gomes 3, Atelier Esq., 2720-519 Amadora, Portugal · WhatsApp +351 912 775 777 · asic.optmiiz@gmail.com
Find us on Trustpilot, Facebook, Instagram and OLX.
Shall we talk about your installation?
Tell us what you have and what you want to do. We reply on the same working day.