XBTec Pacific V3 3.2Th, 0.8W/Gh

[XBTec]

Hi community,

Newest bitcoin miner block erupter has been outputted these days.
Very limited quantity.
If someone wants to see unit by own eyes, welcome to Shenzhen.

Chipset: AM BE200
Hashrate: at least 3.2Th
Power consumption from the wall: 2500 Watt
Power consumption per Gh: ~0.79Watt
Dimensions: 4U rack mount case.
Weight: 18kg

First batch: 10th November
Price: US $1750 with worldwide shipping by DHL.

[1714032249]

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[1714032249]

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[1714032249]

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[Biffa]

What size are those fans? 60mm?

[seriouscoin]

why small fans? so loud

[daddyfatsax]

So how did you get to 3.2 TH/s from 2 Prismas? From your pic you have 16 boards, each Prisma shows up as 8. Right now people are only getting 1440 GH/s per device. So you guys must be overclocking these pretty high.

[shangri]

So how did you get to 3.2 TH/s from 2 Prismas? From your pic you have 16 boards, each Prisma shows up as 8. Right now people are only getting 1440 GH/s per device. So you guys must be overclocking these pretty high.

Cooling and psu it's very important, if you use psu with stable 12v line and heatsink with square around 4000 cm^2 chip works without problem on frequency 270 MHz it's not overclocking. We geting 3.5 thash with same power consumption on 290 MHz when outside was very cold. Maybe prisma couldn't work stable with computer PSU, because after losing on the cables voltage on conectors can be 11.4v - 11.5v it's not important when you use dc\dc, but then we talk about string design it's very important, because voltage separate between chip. Maximal what possible getting from 1 boards around 480 Ghash if use higher voltage.

[XBTec]

So how did you get to 3.2 TH/s from 2 Prismas? From your pic you have 16 boards, each Prisma shows up as 8. Right now people are only getting 1440 GH/s per device. So you guys must be overclocking these pretty high.

Cooling and psu it's very important, if you use psu with stable 12v line and heatsink with square around 4000 cm^2 chip works without problem on frequency 270 MHz it's not overclocking. We geting 3.5 thash with same power consumption on 290 MHz when outside was very cold. Maybe prisma couldn't work stable with computer PSU, because after losing on the cables voltage on conectors can be 11.4v - 11.5v it's not important when you use dc\dc, but then we talk about string design it's very important, because voltage separate between chip. Maximal what possible getting from 1 boards around 480 Ghash if use higher voltage.

That is right, when temperature in Shenzhen dropped down o 23 C degrees, we've got better hashrate.
It seems like causality, not just correlation.

We didn't try to use mine on 290Mhz, nice idea. We gonna try today. Thank you for advice

[dogie]

why small fans? so loud

If you went with two (maybe 3) large fans, the failure of ANY of those fans could cause catastrophic overheating as BE200 doesn't have temperature sensors. By having 6, a fan can fail without problem. tldr, redundancy.

[klondike_bar]

why small fans? so loud

If you went with two (maybe 3) large fans, the failure of ANY of those fans could cause catastrophic overheating as BE200 doesn't have temperature sensors. By having 6, a fan can fail without problem. tldr, redundancy.

quality fans dont crap out in my experience - and the AM Prisma only uses 1 fan itself anyways

[dogie]

why small fans? so loud

If you went with two (maybe 3) large fans, the failure of ANY of those fans could cause catastrophic overheating as BE200 doesn't have temperature sensors. By having 6, a fan can fail without problem. tldr, redundancy.

quality fans dont crap out in my experience - and the AM Prisma only uses 1 fan itself anyways

I'm giving you the reason the manufacturer chose 6 smaller fans, you can argue it all you want.

[loshia]

And the source of your device is?
The answer is ....
no thanks
but it is translated in English which is a good start
Good luck ...
I like the numbers about rejects expected and real performance  
Are you using consts
and 0 HW error rate also.
By the way what UTI means . something like Utility?

Just be ashamed....Make it open source so we can see what you are actually  using and what constants are inside

[opieum2]

why small fans? so loud

If you went with two (maybe 3) large fans, the failure of ANY of those fans could cause catastrophic overheating as BE200 doesn't have temperature sensors. By having 6, a fan can fail without problem. tldr, redundancy.

quality fans dont crap out in my experience - and the AM Prisma only uses 1 fan itself anyways

I'm giving you the reason the manufacturer chose 6 smaller fans, you can argue it all you want.

Dogie has a valid point with the fan logic. It's not about fan failure rates, its about redundancy and cooling in the event of failure.

[dogie]

why small fans? so loud

If you went with two (maybe 3) large fans, the failure of ANY of those fans could cause catastrophic overheating as BE200 doesn't have temperature sensors. By having 6, a fan can fail without problem. tldr, redundancy.

quality fans dont crap out in my experience - and the AM Prisma only uses 1 fan itself anyways

I'm giving you the reason the manufacturer chose 6 smaller fans, you can argue it all you want.

Dogie has a valid point with the fan logic. It's not about fan failure rates, its about redundancy and cooling in the event of failure.

Just to clarify, I meant the reason that XBTec told me they went with 6 smaller fans.

[darkaire]

why small fans? so loud

If you went with two (maybe 3) large fans, the failure of ANY of those fans could cause catastrophic overheating as BE200 doesn't have temperature sensors. By having 6, a fan can fail without problem. tldr, redundancy.

quality fans dont crap out in my experience - and the AM Prisma only uses 1 fan itself anyways

I'm giving you the reason the manufacturer chose 6 smaller fans, you can argue it all you want.

Dogie has a valid point with the fan logic. It's not about fan failure rates, its about redundancy and cooling in the event of failure.

Just to clarify, I meant the reason that XBTec told me they went with 6 smaller fans.

This miner is meant for datacenters, not for your room or home office. Same reason full servers are not a nice thing to have sitting in your office, efficiency and airflow is primary, audible noise isn't a concern. These are likely high RPM fans not unlike what you would find in a commercial server. If you are looking for a home miner, this isn't it.

Plus look at that constant 2500 watt power load, you would be hard pressed to even run this thing on a home outlet.  

[dogie]

Plus look at that constant 2500 watt power load, you would be hard pressed to even run this thing on a home outlet. 

Do remember that the US has unusually bad circuits.

[warrensgun]

Plus look at that constant 2500 watt power load, you would be hard pressed to even run this thing on a home outlet. 

Do remember that the US has unusually bad circuits.

I would hardly say that the typical 15Amp 120v circuit in the USA is a bad circuit.  With the exception of bitcoin miners, I've found few items that trip a typical circuit. 

Items that typically draw a lot are often placed on their own circuit in new construction.  This of course can be a problem sometimes for those with older wired houses that weren't designed to have all the modern draw appliances.

If you know you need a 2500w draw, then you know you need either 2 circuits or 1 220v circuit.....

[warrensgun]

This just appears to be 4 asic tube miners put together in one box with 2 psu.  Nothing really is achieved other than a nicer form factor.
Remember the asicminer tube was .77 BTC for 1.  So this is four of them or 3.08 BTC + the PSU and the case.  Obviously based on the wiring setup of this, it's not like they created circuit boards or other stuff to handle the mess of PCI-e wires.

So i've racked up that this is worth 3.08 BTC + PSU. Which look oddly the same as the ones in the antminer s4 and the prospero x3 - ie a sunshine (apluspower) ap188.  Plus a metal 3u box. 

The nice form factor is cool and all, but by no means is worth the increase in price.  I doubt the efficiancy is what is claimed vs an asicminer tube - as both produce the same 215gh per board for 280 mhz clock.

[pak13]

Plus look at that constant 2500 watt power load, you would be hard pressed to even run this thing on a home outlet. 

Do remember that the US has unusually bad circuits.

Dogie, an ignorant statement like that, makes me wonder the level of knowledge you are relaying through your numerous (paid via amazon associate tag) reviews. As an electrical engineer having lived in the U.K, Australia and the U.S, I can say the worst electrical circuits and standards are by far in the U.K. Australia follows close behind with some of the best located in the U.S. I'm not saying the U.S excels overall, and I can name many areas they could improve on, following international standards for example, yet when it comes to residential and commercial circuits, the U.S cabling has a higher over rating than others by far.

[dogie]

Plus look at that constant 2500 watt power load, you would be hard pressed to even run this thing on a home outlet. 

Do remember that the US has unusually bad circuits.

Dogie, an ignorant statement like that, makes me wonder the level of knowledge you are relaying through your numerous (paid via amazon associate tag) reviews. As an electrical engineer having lived in the U.K, Australia and the U.S, I can say the worst electrical circuits and standards are by far in the U.K. Australia follows close behind with some of the best located in the U.S. I'm not saying the U.S excels overall, and I can name many areas they could improve on, following international standards for example, yet when it comes to residential and commercial circuits, the U.S cabling has a higher over rating than others by far.

Are you.... are you honestly trying to argue that the USA's
110V 20A (16A 24/7) =  1760W
is better than the UK's
240V 32A (36A 24/7) = 8640W
for bitcoin mining?

[warrensgun]

The standard residential circuit is 15Amp at 120v.  20Amp @ 120v are used normally when you know there will be higher drawing things.  Then it goes to 30amp 240v, 40, 50amp, 60amp etc.  You can have whatever you want setup.  Most kitchens with an electric stove have a 50amp circuit for it.

In the commercial space, the typical service is a 3phase 208v service.  So 1 leg is 120v and 2 combined is 208v. 

Saying that the USA "has unusually bad circuits" is just ignorant.  There are also plenty of standards in place in the USA that generally prevents single  plug machines from drawing more than 1500watts on a standard outlet. 

The Pacific V3 doesn't need 2500watts through one plug, it  has two power supplies... Plus since it's rack mountable, it's a setup to be placed in a rack with some 208v PDU's.

[dogie]

The standard residential circuit is 15Amp [12A 24/7] at 120v.  .... Saying that the USA "has unusually bad circuits" is just ignorant. 

You're contradicting yourself, but we're also off topic so lets move it somewhere else.