[PRICE REDUCED] DPS-2000BB 2000W Server PSU Interface Board

[zulover]

We've got over a hundred boards pending in the preorder. Earliest we'd be shipping new orders is the end of the week. Everything else you need to know is in the first post.


Pardon if I'm a bit short or "snippy" lately. We had a really good timeline laid out but unfortunately everyone we were relying on for anything ever was between one and three weeks late, so now we're stuck with completing two different board production runs, and gathering for a third, and assembling all the cables, and preparing for a double move, and renovating a shop and building up an 80KW hosting infrastructure from literally zero, with the expected deadline for all of that actually already past. Oh and our entire workforce to complete it all is 2.5 guys, the other 1.5 of whom have wifes and, by extension, lives. So yeah, pretty busy. Not a lot of time to answer questions that have already been answered.

brother i know EXACTLY how you feel, im on a 70kw facility and 2 guys down also. be as snippy as you want i like short cut answer.

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[sidehack]

It looks like we're gonna pull an all-nighter to get about 80 DPS boards out tomorrow, cables included. And the half guy will probably be coming in three hours early.

[data55]

It looks like we're gonna pull an all-nighter to get about 80 DPS boards out tomorrow, cables included. And the half guy will probably be coming in three hours early.

Thanks for the update. Looking forward to receiving these boards!

[zulover]

Id like 6 boards with cables. Where can I pay and total please.shipping to uk.

[CrazyGuy]

Order received today, thanks for the quick shipping! I won't have a chance to test them out for a few days but hopefully I can get 6 S3s at default freq off of 1 PSU.

[nexus99]

Anyone have a calculation of home many DPS-2000BB can be run on a 30A 240V circuit?

[zulover]

30a x 240v = 7200watt/2000 = 3.6 round down to 3

[sidehack]

Yeah for 240V I'd recommend one DPS2K per 10A of circuit. If you don't overdrive them that should be enough headroom.

[tolip_wen]

Anyone have a calculation of home many DPS-2000BB can be run on a 30A 240V circuit?

@ full power one PSU pulls about 8.6A (@ 238VAC)
2 PSU for same load is same AC load of 8.6A.

It is not how many PSU's attached to AC, it is the load on PSU's that is important.

EX: 4 2kW PSU for a 4kW 'load' would be OK as each PSU would be @ 50% of output power.

YMMV

[Swimmer63]

A couple questions:
Are you still taking orders for boards and cables?
Do you have the PSU's or do we get those separately?

[sidehack]

Yes, we're still taking orders. We're still catching up to the preorders so we'd still be on "backorder" with approximately a one-week shipping delay, but we're still adding orders to the queue.

I don't have any PSUs. Minersource seems to have a good stock of them; I had someone within driving distance contact me about a pallet of 'em but they're holding out for approximately retail price and not really wanting to negotiate.

[Swimmer63]

Yes, we're still taking orders. We're still catching up to the preorders so we'd still be on "backorder" with approximately a one-week shipping delay, but we're still adding orders to the queue.

I don't have any PSUs. Minersource seems to have a good stock of them; I had someone within driving distance contact me about a pallet of 'em but they're holding out for approximately retail price and not really wanting to negotiate.

Thanks. Looks like you have to have a 200-240v circuit. That rules me out.

[sidehack]

Yeah 2000-2500W is quite a bit of current to pull off a 120V line. 240V isn't really that hard to come by if you know how to work a breaker box. I sometimes forget though, that regular people often don't have the same skill set that I grew up with.

[chadwickx16]

Yeah 2000-2500W is quite a bit of current to pull off a 120V line. 240V isn't really that hard to come by if you know how to work a breaker box. I sometimes forget though, that regular people often don't have the same skill set that I grew up with.

That's what youtube is for. 

[sidehack]

I prefer the being raised by an academician mother and a jack-of-all-trades carpenter father. Prepares you for all sorts of fun stuff, not the least significant of which are self-sufficiency and the ability to be useful in most any situation.

But yeah, if you didn't have that Youtube is a good fallback for on-the-fly instruction. I learned intarsia crochet from a youtube video one time.

[kgb2mining]

Yeah for 240V I'd recommend one DPS2K per 10A of circuit. If you don't overdrive them that should be enough headroom.

That's fully loaded with 6x antminers per PSU, right?

In our setup we've got some APC 240v / 30a PDU's in the racks.  16A per bank or 24A total across both (2 banks per PDU).

I'm going to assume that if we make a "block" of 4x antminer per DPS-2000 we should be OK running 4 "blocks" per PDU?  In theory we'd be right around the max for the circuits but a hair under.  While we'd use more PSU's and boards, I think that would give us max density both in the cabinets as well as the PDU's.

Thoughts?

[sidehack]

Consider the expected DC power draw of each miner, and sum for the total DC output of each PSU. Divide by 0.9 to get an expected input AC power requirement to make that DC output. Divide that AC power by your available mains voltage (208, 240, whatever) to ascertain your input current requirements.

Fully loaded these PSUs will output about 2500W, which requires up to 11.6A from a 240VAC source. At rated output 2000W it's more like 9.2A 240V.

If the S3 requires about 350W of DC power, four per PSU would be about 1400W of DC power, so about 1550W (max, should actually be lower than this as at 1400W the PSU efficiency should be more like 92-93% than 90%) which at 240V would mean 6.5A; a set of four of these would then be at most 26A of 240VAC. If the S3 requires less than 350W of DC power (all the numbers I've seen are "at the wall", which is a useless number if PSU efficiency is unknown) scale your required AC current accordingly.

[r00t$]

Question regarding dip switch positions on the DPS-2000 breakout board ...I think I may have bumped one of the 3 dip switches because the fan controller no longer works. The fans I have strapped to the side are barely pushing any air through the PSU, despite adjusting the knob. Are one of the switches supposed to allow for the fan controller to function properly?

[sidehack]

It's the same settings as on the D750 boards. We don't have a DPS2K doc up, but the D750 V0.5 doc on our website has all the pertinent information.

[Qeu]

Sidehack, thanks for the tracking / shipping update.