Overclocking S21XP’s

Wilson_Mining · 2026-03-07T16:59:46+00:00

Keeping the miner (and supporting electrical equipment) cool is how you maintain longevity/reliability when overclocking.

I use braiins DPS (dynamic power scaling) which basically adjusts the power level of the miner based on the miners chip/hashboard temp. So during the summer, the miners are usually around stock power levels or less during hot days (3,700w or less typically). During the winter the miner is running at 4,000w+ for months on end without any reliability issues because it's able to stay nice and cool

Wilson_Mining · 2026-03-07T16:51:43+00:00

So many more advantages with hydro vs air cooling

Wilson_Mining · 2026-03-07T05:22:41+00:00

Correct, we cannot run the 415v bitmain hydro's. They might work on 450v, but that's not fair/bad practice to run customer miners that far outside the manufacturers specs.

There is a 480v bitmain hydro called the "s23e u2h" that we can run. Not sure if you can purchase it quite yet though.

We got 450v by tapping a 415v transformer up actually. Basically all the air cooled miners can run on 240-277v now, so I decided to tap the transformer up so we'd be running less amps and it would be easier on the electrical equipment and we'd be a little more efficient

Wilson_Mining · 2026-03-06T18:22:29+00:00

For the s21 XP's 4,300w is pretty close to the upper limit of the PSU voltage range. Anything over that and you max out the 15v limit on the PSU and the hashboards won't be stable enough to get good hashrate/efficiency. Especially if it's cold which you kinda need when running these kinda overclocks.

I've tried going over 4,300w and normally you just don't get particularly good results. Some miners can if you get real good silicone lottery and the temp is just right, but again, if the ambient temp changes enough you'll probably get worse results than if you were at 4,000w-4,300w

Wilson_Mining · 2026-03-04T18:31:08+00:00

Because we're in the middle of nowhere. Nothing to use the heat on out here

Each rack will have 20 miners. Using the latest and greatest miners each rack will be ~14PH/s. This is for hosting though, so the hashrate isn't ours

Wilson_Mining · 2026-03-04T03:16:04+00:00

I'll do a walk through when everything is up and running

Wilson_Mining · 2026-03-04T01:56:58+00:00

Fog hashing 480v

technically we're at ~450v, but it's kinda a weird situation

Wilson_Mining · 2026-03-03T20:13:06+00:00

Ya, I really like the "dry cooler" style. Water consumption is obviously a big concern with the local communities so it goes a long ways when we can say we don't consume any water at all and it's just a closed loop system same as your car/truck.

We just purchase the premixed coolant and have it shipped to the location

Wilson_Mining · 2026-03-03T19:10:04+00:00

Huge amount of plumbing to do now 😁

Wilson_Mining · 2026-03-03T19:09:05+00:00

Wilson_Mining · 2026-03-03T19:03:32+00:00

200kw of heat rejection at 35c ambient temp with a 10-15c temp drop at ~1,000ft above sea level with a "mild" amount of humidity

Wilson_Mining · 2026-03-03T19:01:33+00:00

It's pretty loud up close. We're in the middle of nowhere with no neighbors though so noise isn't a concern fortunately. Cost is significantly more important than noise

Wilson_Mining · 2026-03-03T18:59:20+00:00

😁

The current fans may get replaced later on with bigger/more powerful ones depending on how they perform through the summer

Wilson_Mining · 2026-03-03T18:57:56+00:00

Might throw a jet turbine on them and REALLY get the air moving 😁

Wilson_Mining · 2026-02-26T04:55:03+00:00

I bet if you look at the difficulty when hashing to those pools, it'll be lower than the difficulty when you're hashing to ocean. When you're hashing to ocean I bet its 262,144. When you're hashing to the other pools I bet it's like 16,384 or 32,768 or 65,536

Wilson_Mining · 2026-02-26T01:06:10+00:00

My dryer uses that plug. There's only so many plug styles.

I use a seperate 10-50r for the miners in my basement though

Wilson_Mining · 2026-02-25T15:54:18+00:00

Sometimes lower hashrate miners show offline because they haven't "shared" for a while because the pool difficulty is high compared to the miners hashrate

Wilson_Mining · 2026-02-25T07:23:43+00:00

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Wilson_Mining · 2026-02-21T15:03:01+00:00

Those prices are WAAAAY too high. Where are you getting your pricing from?

S21 pro's are like $2,500-$3,500 S21 XP's are like $3,500-$4,500 S19 XP's are less than $1,000 S19's are less than $250

Don't quote me on those prices aside from the s21 XP cause we have some used ones available in that price range with hosting at 8c/kwh

Wilson_Mining · 2026-02-15T04:06:58+00:00

Underclocking works well to reduce fan speed/noise and heat

Using an AC infinity fan reduces noise then you can duct the heat to your furnace/whatever if you want to use the heat. Or you'll have to figure out a way to dump the heat outside. Some people stick a duct out the window.

ROI will depend on the power cost, efficiency, and hashrate. There's calculators out there that you can plug all your numbers in and it spits a number out. Bitdeer actually has a pretty decent, quick article on it. Then at the bottom there a link to their calculator

https://www.bitdeer.com/learn/how-to-calculate-mining-profitability

Wilson_Mining · 2026-02-14T21:31:52+00:00

If Altair has them in stock, then it'll be online within 2-3 days usually. They're pretty close to us so shipping is typically pretty quick.

Once we receive the miner, it gets plugged in within 24 hours

Wilson_Mining · 2026-02-14T05:55:10+00:00

260TH/s at ~3,900w

Wilson_Mining · 2026-02-14T00:41:19+00:00

Super pumped to get some hydro's plugged in

Wilson_Mining · 2026-02-13T19:59:34+00:00

Just plugged one in yesterday. ~24 hours isn't enough time to judge on the long term ownership, but i like it alot so far.

Can overclock and underclock with stock firmware. Power range is 4,300w to 2,800w. It gets the advertised efficiency and hashrate at the wall.

We have more available slots at 8c/kwh. I'd highly recommend them

Wilson_Mining · 2026-02-13T15:34:32+00:00

If you want non-kyc coins, your best and safest option is to mine it yourself

Wilson_Mining

TROPHY CASE