What Makes the Antminer S21 j XP Hydro 495T a Top-Tier Miner for Large Farms?
Large farms need machines that do two things. They need to produce a lot of hashrate. They also need to do it without wasting electricity. The S21j XP Hydro 495T is built for this. It is a top-tier machine for professional Bitcoin mining. It uses SHA-256 to mine BTC, BCH, and BSV.
The Antminer S21 j XP Hydro 495T delivers 495 TH/s of hashrate. It consumes 5940W of power. This gives it a power efficiency of 12.0 J/TH. This is one of the most efficient hydro miners on the market today. For a 100-unit deployment, this efficiency saves a massive amount of money on electricity.
Full Specifications of the S21 j XP Hydro 495T
| Specification | Detail |
|---|---|
| Model | S21j XP Hyd. (495T-10) |
| Crypto Algorithm | SHA256 |
| Supported Coins | BTC / BCH / BSV |
| Typical Hashrate | 495 TH/s |
| Power on Wall @35°C | 5940W |
| Power Efficiency @35°C | 12.0 J/TH |
| Phase | 3 |
| Input Voltage | 380~415V |
| Input Frequency | 50~60 Hz |
| Input Max Current | 12 Amp |
| Network Connection | RJ45 Ethernet 10/100M |
| Size (w/o package) | 430 x 176 x 208 mm |
| Size (with package) | 570 x 316 x 430 mm |
| Net Weight | 16.2 kg |
| Gross Weight | 18.3 kg |
Why 12.0 J/TH Matters for 100 Units
The numbers look small on a single machine. But when you run 100 machines, the math changes. Let us look at the power draw. 100 units of the S21j XP Hydro run at 5940W each. That is 594 kilowatts in total. At 12.0 J/TH, you get maximum hashrate for that power. If you bought older miners with 20 J/TH efficiency, you would get much less hashrate for the same electricity. Large farms care about this. The S21j XP Hydro helps you maximize your power contract.
Why Are Dubai Mining Operations Moving Toward Hydro-Cooled Miners?
Dubai is a great place for crypto mining. The government supports it. There are free zones with good power. But Dubai has a problem. It is very hot. Summer temperatures often go above 45°C. If you run air-cooled miners in this heat, they struggle. Fans run at full speed. Miners throttle down. Hardware fails faster.
Dubai mining operations are moving toward hydro-cooled miners because air cooling cannot handle the extreme heat efficiently. Hydro miners use liquid coolant to carry heat away from the chips. This keeps the miners at a stable temperature. They run at full speed even when it is hot outside. For Dubai farms, hydro cooling is a requirement for stable profit.
The S21j XP Hydro Cooling System
| Cooling Parameter | Requirement |
|---|---|
| Inlet Coolant Temperature | 20~50°C |
| Coolant Flow | 8.0~10.0 L/min |
| Coolant Pressure | ≤3.5 bar |
| Working Coolant | Antifreeze / Pure water / Deionized water |
| Coolant pH Value | Antifreeze: 7.0~9.0 |
| Pure water: 6.5~7.5 | |
| Deionized water: 8.5~9.5 | |
| Pipe Connector Diameter | OD10 mm |
Why Water Beats Air in the Desert
| Feature | Air Cooling | Hydro Cooling (S21j XP) |
|---|---|---|
| Heat Removal | Fans push hot air out | Coolant carries heat away |
| Performance in 45°C | Throttles, drops hashrate | Runs stable at full speed |
| Noise Level | Very loud (75+ dB) | Quieter operation |
| Dust Issues | Fans clog with sand | Sealed loop, no dust |
| Miner Lifespan | Shorter due to heat | Longer due to stable temps |
Our Dubai customer knows this. They run a professional farm. They cannot afford downtime. They chose the S21j XP Hydro because they know it will keep hashing through the Dubai summer.
How Does a 100-Unit Order with DDP Air Freight Simplify Global Mining Logistics?
Shipping 1 miner is easy. Shipping 100 miners is hard. You have to deal with freight forwarders. You have to arrange customs clearance. You have to pay import taxes. If you do not do it right, the machines sit in customs for weeks. DDP shipping solves this.
DDP stands for Delivered Duty Paid. When we ship with DDP, we handle everything. We book the air freight. We clear the customs in Dubai. We pay the duties and taxes. We deliver the 100 miners to your door. You do not need a customs broker. You do not need to fill out complex paperwork.
What DDP Covers for a 100-Unit Order
| Step | Who Handles It? |
|---|---|
| Export Paperwork in Hong Kong | Miner Source |
| Air Freight Booking (100 units) | Miner Source |
| Dubai Import Customs Clearance | Miner Source |
| Import Duties and Taxes | Miner Source |
| Final Delivery to the Farm | Miner Source |
Air Freight vs. Sea Freight for 100 Units
| Shipping Method | Transit Time | Best For |
|---|---|---|
| DDP Air Freight | 3-7 business days | Fast deployment, high-value miners |
| Sea Freight | 3-6 weeks | Very large orders with flexible plans |
Our customer chose air freight. They want the machines hashing as soon as possible. Every day the miners sit in transit is a lost day of Bitcoin earnings. DDP air freight gives them speed and peace of mind.
Why Does Real Hong Kong Warehouse Stock Matter for Wholesale Buyers?
Many suppliers in the market do not hold real stock. They take your order. Then they try to find the miners. They might buy from the factory. They might buy from another trader. If the market is tight, you wait. Sometimes you wait for months. Sometimes the order gets canceled. This is a bad way to run a mining business.
Real Hong Kong warehouse stock means the 100 Antminer S21j XP Hydro units were already sitting in our building when the customer ordered. We own the inventory. We can take photos of the boxes. We can pack and ship immediately. We do not make you wait for factory production.
Real Stock vs. Factory Allocation
| Supply Type | What It Means | Buyer Risk |
|---|---|---|
| Real Hong Kong Stock | Units are ready in our warehouse | Low risk. Fast shipping. |
| Factory Allocation | Units wait for the factory to release them | Medium to high delay risk |
| Pre-Order | Units are not built yet | Very high delay risk |
How We Prepare 100 Units for Shipping
Before the 100 units left our warehouse, our team did the following:
- Checked the model numbers to ensure they are S21j XP Hydro 495T.
- Inspected the boxes for damage.
- Protected the coolant ports and connectors.
- Palletized the units for safe air transport.
- Took photos of the packed goods for the customer.
We do this for every order, whether it is 1 unit or 100 units. We want the machines to arrive exactly as they left our warehouse.
Looking for Bitcoin, Litecoin, or Zcash Miners? What Else Can Miner Source Supply?
The S21j XP Hydro is a great machine for Bitcoin. But we know miners have different needs. Maybe you want to mine Litecoin and Dogecoin. Maybe you want to test Zcash. Maybe you need accessories like power supplies or control boards. We supply all of this.
Miner Source specializes in supplying cryptocurrency mining hardware worldwide. We work with trusted brands including Bitmain (Antminer), MicroBT (WhatsMiner), Avalon, Goldshell, IceRiver, and ElphaPex. We supply miners for Bitcoin, Litecoin, Dogecoin, Zcash, and other specialized ASIC mining machines. We also provide power supplies, control boards, cables, and liquid cooling infrastructure.
What We Can Supply
| Product Category | Examples |
|---|---|
| Bitcoin Miners (SHA-256) | Antminer S21 series, WhatsMiner M60/M70 series |
| Litecoin/Dogecoin Miners (Scrypt) | Antminer L7, ElphaPex DG Hydro 1 |
| Zcash Miners (EquiHash) | Antminer Z15 Pro, Z15K, Z11 |
| Hydro Miners | Antminer S21j XP Hydro, S21e XP Hydro, WhatsMiner M73 |
| Accessories | PSUs, control boards, cables, air switches |
| Infrastructure | Liquid cooling CDUs, containers, cabinets |
When You Contact Us, Please Share
| Detail | Example |
|---|---|
| Model Needed | S21j XP Hydro, M73, Z15K, etc. |
| Quantity | 1 test unit or 100+ wholesale batch |
| Destination Country | UAE, USA, Germany, etc. |
| Shipping Method | DDP Air, Express, Sea Freight |
| Timeline | Urgent or Planned Purchase |
You can reach us here:
- Email: info@minersource.shop
- Website: www.minersource.shop
- Contact Page: Contact
- WhatsApp: +86 13871817151
Conclusion
On October 26, 2026, Miner Source prepared and shipped 100 units of the Antminer S21j XP Hydro 495T from Hong Kong to Dubai. The machines deliver 495 TH/s at 5940W with an efficiency of 12.0 J/TH. We used DDP air freight so the customer does not have to deal with customs.
This shipment shows how we work. We keep real stock in our Hong Kong warehouse. We handle the logistics and customs. We pack the machines securely. We support both small test orders and large wholesale batches. If you need mining hardware, contact Miner Source. We are your reliable partner.
MinerSource.shop — Reliable Miners. Global Shipping.
