Best Bitcoin Mining Pools for Antminer S21

Running an Antminer S21? These pools deliver the highest measured real yield, maximizing your 200 TH/s machine's earning potential.

#1 Pick: Headframe

Fee

0.9%

Fee Type

FPPS

Hashrate

1 EH/s

Network Share

0.1%

Min Payout

0.001 BTC

Real Yield

44.5 sat/TH/day

Luck

100.0%

View Pool Details

Runner-Ups

TrustPool

Fee: 1%PPS+9.76 EH/sReal Yield: 44.1 sat/TH/d

21Pool

Fee: 4%FPPS1.6 EH/sReal Yield: 43.8 sat/TH/d

SpiderPool

Fee: 2%PPS+12 EH/sReal Yield: 43.6 sat/TH/d

AntPool

Fee: 4%FPPS145 EH/sReal Yield: 43.4 sat/TH/d

Full Comparison

#	Pool	Fee	Fee Type	Hashrate	Min Payout	Real Yield
#1	Headframe	0.9%	FPPS	1 EH/s	0.001 BTC	44.5 sat/TH/d	View
#2	TrustPool	1%	PPS+	9.76 EH/s	-	44.1 sat/TH/d	View
#3	21Pool	4%	FPPS	1.6 EH/s	-	43.8 sat/TH/d	View
#4	SpiderPool	2%	PPS+	12 EH/s	-	43.6 sat/TH/d	View
#5	AntPool	4%	FPPS	145 EH/s	-	43.4 sat/TH/d	View

Optimizing Your Antminer S21 with the Right Pool

The Antminer S21 delivers approximately 200 TH/s of SHA-256 hashrate. At this performance level, even small differences in pool efficiency matter — a 1 sat/TH/day difference in real yield translates to roughly 200 sat/day, or about 6,000 sat/month. Choosing the right pool directly impacts your ROI timeline.

We rank pools for S21 owners by measured real yield — the actual satoshis per terahash per day recorded by independent ASIC hardware. This metric captures everything: fees, luck handling, transaction fee policy, and operational efficiency. Higher real yield means more BTC in your wallet.

Key criteria: measured real yield (sat/TH/day), fee percentage, payout model compatibility with S21 firmware, hashrate share (stability), and minimum payout threshold for your expected daily earnings.

How We Rank Pools

HashRadar collects live data from the Bitcoin network, public pool APIs, and independent ASIC miners running on monitored pools. We track hashrate, fees, payout models, minimum payout thresholds, luck, and real yield.

Each ranking applies a specific sorting formula. For example, the "Most Profitable" page sorts by measured real yield, while "Lowest Fees" sorts by fee percentage. Partner-verified pools may receive a ranking boost within the same performance tier.

A pool can rank higher or lower based on recent changes in fees, hashrate share, measured yield, or data availability. If a pool stops reporting data or goes offline, it drops in the ranking automatically.

Who This Ranking Is For

This ranking is specifically for Antminer S21 owners (and operators of similar ~200 TH/s machines) who want to maximize their hardware's earning potential. The real yield data is measured at the per-terahash level, so the ranking applies equally to any SHA-256 ASIC — but the earnings estimates reference the S21's 200 TH/s specification.

What to Check Before Connecting Your S21

Compare real yield across pools — even 0.5 sat/TH/day makes a meaningful difference at 200 TH/s over a month.
Verify the pool's stratum server supports the S21's firmware version (most modern pools do).
Check if the pool supports Stratum V2 for better efficiency and privacy.
Review the minimum payout threshold — with 200 TH/s on a high-yield pool, you should reach common thresholds within 1-2 days.
Consider power costs in your region: if electricity is expensive, maximizing real yield is even more critical for profitability.

Frequently Asked Questions

Which pool pays the most for Antminer S21?

The pool with the highest real yield (sat/TH/day) currently offers the best returns for S21 miners. Real yield is measured by independent ASIC hardware on each pool, so it reflects actual payouts rather than theoretical calculations. Check the ranking above for the latest data.

What is real yield and why does it matter for S21?

Real yield measures the actual satoshis per terahash per day that a miner receives from a pool. Unlike theoretical calculations, real yield accounts for pool fees, luck, transaction fee handling, and payout model differences. For a 200 TH/s S21, even a small difference in sat/TH/day translates to meaningful income differences over a month.

Should I use FPPS or PPLNS with my S21?

For a single S21, FPPS is often preferred because it provides predictable daily income. With PPLNS, your income fluctuates based on pool luck, which can be stressful. However, if you plan to mine long-term and want to minimize fees, PPLNS may yield slightly more over time. Check the real yield data to compare actual outcomes.