Author

Topic: HashFast announces specs for new ASIC: 400GH/s - page 487. (Read 880483 times)

legendary
Activity: 1764
Merit: 1002
what's the best way to cool down a 10x9 room with all these hashing units in it?

ac, fan enabled high airflow, or a combination of both?  don't forget these chips respond to cool air by self oc'ing which is what i want.

i've priced out the specs doing it by ac alone and it is expensive.  the amount of kW of heat is enormous on calculation.  there's gotta be an easier way.  i live in an inclement area with pretty standard 72 degrees most of the year with some heat during summer.

the good news is there's roof right above the ceiling and a sliding glass door out to a balcony for some flexibility.

since the life of the systems doesn't have to be that long, you may not have to worry that much about humidity so give some thought to using large amounts of ambient air as an intake and exhaust the hot air out the roof.  if you can get enough airflow from the outside...  you may only need the a/c to supplement the cooling in the warmer months...

and the life of these systems will start in the middle of winter, and by the time the height of summer rolls around in 8-9 months, their value may not be so much that you wouldn't consider selling them and buying the next generation gear anyway...

-- Jez




that's the way i'm intuitively leaning as well.
hero member
Activity: 702
Merit: 500
damn.  clarification on the airflow direction from the psu's for the Sierras.

D&T is correct, the Seasonics intake air from the sides and exhaust out the back.  i swear Simon told me the opposite.  oh well.

cypherdoc -

its also possible that hashfast has special ordered versions of the seasonic psus that have the airflow reversed...

-- Jez


no, i just heard back from him right now.  but i swear i heard the opposite from him earlier.  no matter.

If you wanted to max overclock the hardware you could probably put a bigger radiator on each one, e.g. the H100i (240mm rad, with two or four fans) - or the extreme cooling of the H110 (280mm radiator!!) on each chip... and leave the rads sticking out the back (even less chance of winning the `Concourse D'Elegance'...   while you're at it, you could remove the psus and have them running outboard, so their airflow doesn't contribute to the internal heat.

http://www.corsair.com/us/cpu-cooling-kits/hydro-series-water-cooling-cpu-cooler/hydro-series-h110-280mm-extreme-performance-liquid-cpu-cooler.html

hero member
Activity: 702
Merit: 500
what's the best way to cool down a 10x9 room with all these hashing units in it?

ac, fan enabled high airflow, or a combination of both?  don't forget these chips respond to cool air by self oc'ing which is what i want.

i've priced out the specs doing it by ac alone and it is expensive.  the amount of kW of heat is enormous on calculation.  there's gotta be an easier way.  i live in an inclement area with pretty standard 72 degrees most of the year with some heat during summer.

the good news is there's roof right above the ceiling and a sliding glass door out to a balcony for some flexibility.

since the life of the systems doesn't have to be that long, you may not have to worry that much about humidity so give some thought to using large amounts of ambient air as an intake and exhaust the hot air out the roof.  if you can get enough airflow from the outside...  you may only need the a/c to supplement the cooling in the warmer months...

and the life of these systems will start in the middle of winter, and by the time the height of summer rolls around in 8-9 months, their value may not be so much that you wouldn't consider selling them and buying the next generation gear anyway...

-- Jez


legendary
Activity: 1764
Merit: 1002
what's the best way to cool down a 10x9 room with all these hashing units in it?

ac, fan enabled high airflow, or a combination of both?  don't forget these chips respond to cool air by self oc'ing which is what i want.

i've priced out the specs doing it by ac alone and it is expensive.  the amount of kW of heat is enormous on calculation.  there's gotta be an easier way.  i live in an inclement area with pretty standard 72 degrees most of the year with some heat during summer.

the good news is there's roof right above the ceiling and a sliding glass door out to a balcony for some flexibility.
legendary
Activity: 1764
Merit: 1002
damn.  clarification on the airflow direction from the psu's for the Sierras.

D&T is correct, the Seasonics intake air from the sides and exhaust out the back.  i swear Simon told me the opposite.  oh well.

cypherdoc -

its also possible that hashfast has special ordered versions of the seasonic psus that have the airflow reversed...

-- Jez


no, i just heard back from him right now.  but i swear i heard the opposite from him earlier.  no matter.
hero member
Activity: 702
Merit: 500
damn.  clarification on the airflow direction from the psu's for the Sierras.

D&T is correct, the Seasonics intake air from the sides and exhaust out the back.  i swear Simon told me the opposite.  oh well.

cypherdoc -

its also possible that hashfast has special ordered versions of the seasonic psus that have the airflow reversed...

-- Jez
full member
Activity: 210
Merit: 100
damn.  clarification on the airflow direction from the psu's for the Sierras.

D&T is correct, the Seasonics intake air from the sides and exhaust out the back.  i swear Simon told me the opposite.  oh well.

I think your apology was misdirected.  D&T has nothing to do with this Cry

Guys, i've yet to understand to what date we have to sum this week of delay to. 17 of october? 25 of october? 30 of october?
And what's this expensive (for our pockets) component? Are you running out of capacitors? (avalon did, remember?)
Up.
Up. Plus:



Please tell me that there is a good reason to put the PSU air intake there, in a spot that once in a rack, no air can come trough.

And if such a good reason doesn't exist, i HAVE to conclude that it is only a rendering of a non existing case for something that will not ship anytime soon done and approved from people that doesn't have any idea of what they are doing.

Those are psu exhaust openings on the side.

Looo!! Cypher, have you opened a 'puter box open IRL? Cheesy  Not only is that an intake, but reversing teh fan would only make things worse, with PS sucking in the hot exhaust.  If the intake on the side is blocked off by rack walls (it isn't, most racks don't block the sides), so would the exhaust Cheesy

No. Simon and I have talked specifically about this. Those are exhaust openings in the sides. In fact, one has to make provisions for this in their rack selection.
legendary
Activity: 1764
Merit: 1002
damn.  clarification on the airflow direction from the psu's for the Sierras.

D&T is correct, the Seasonics intake air from the sides and exhaust out the back.  i swear Simon told me the opposite.  oh well.
full member
Activity: 210
Merit: 100


yes, then don't order.

in fact, you can blame me for advising them not to take cc's.  ...
...
 risk is in the eye of the beholder.  committed customers of HashFast know the situation and will consider it not much of a risk to wait 4 mo at the end of which they can get a refund. customers jumping in and out of orders during the preorder time period increases workload and inefficiencies.  i, as a customer of KNC and Megabig, was exploiting this inefficiency for my own protection/advantage.  ...

So much win Grin
sr. member
Activity: 826
Merit: 314
GIF by SOCIFI
For the next 3 days, prices have been slashed on Baby Jet’s and Sierra’s. Now is the time to invest in additional rigs. Sale ends Monday at 11:59PM PST!

For those who already ordered a first batch Baby Jet, would it be possible to trade it for a Sierra on sale? How much extra would that cost for the device (beyond the $400 difference) and shipping?

Contact [email protected], they should be able to help you.

Well, I mailed them and got this reply:

Quote from: [email protected]
In regards to your questions below, we are unable to cancel your current order as we have already ordered the hardware that will be required to assemble your unit.


Just to remind that from the 23 of September they are supposed to have ordered the hardware for the BJ, which is the same as for the sierra and we have not seen yet. It's the exact same message that they told me days ago when I suggest them to offer the upgrade into sierras orders
sr. member
Activity: 826
Merit: 314
GIF by SOCIFI
Um who would choose a over b?

Well there may be people that thinks that is fair what HF is doing, so just for giving all the range options I put it there. But apart from the HF itself I don't think that nobody will choose a)
donator
Activity: 1218
Merit: 1079
Gerald Davis
I will ask here before opening a poll. For the first batch customers, what your prefer:

a) BJ in mid november and stay with the MPP starting the day shipped
b) BJ in mid november and the MPP starting 1st november
c) Turn your order into a sierra that ships in late november and refuse to the MPP

Um who would choose a over b?
legendary
Activity: 1274
Merit: 1004
I think c) is absolutely not going to happen. You're kidding yourself if you think they'll send you a Sierra in place of a BabyJet.
I would add d) Allow September BabyJet users to upgrade to a MPP-less November Sierra units for the difference in price ($1440), while keeping their place in line.
It would basically mean that you get 1.5TH/s in November (assuming they hit mid-late November) in the Sierra case for an extra $1440, instead of getting a 0.5TH/s BabyJet in mid-November and another 1.5TH/s in loose modules in mid-February.
It's still a win IMO though, and I think it's a lot more likely to happen.

Sorry but the sierra was on "sale" 3 days, when you could purchase it for 6000$. That is 400$ difference. I will pay them without any problem or they could also earn them as compensation for the delay, but that could be just to ambitious for my self as HF does not seem to take care of the first batch customers. I will be happy enough if the first one happens
At least they should give us the chance to change the orders or offer a compensation
Should and will are likely two extremely different things.
The most likely scenario is something along the lines of
"Hey HashFast, can we get our.."
"No."
"But it's late, how about"
"No."
"But that's not fair..."
http://www.youtube.com/watch?v=53s13hXBX8w&t=1m42s

I'd love to see a $400 upgrade to a November Sierra. I don't see them giving anything though.
hero member
Activity: 761
Merit: 500
Mine Silent, Mine Deep
Thanks all. These are all good questions and suggestions.

Personally I think the best scenario would be to accelerate the delivery of the MPP modules for batch1 owners to compensate for the delays. At this point, there is no need to wait 3 month to conclude that a BJ in the current situation (delays+difficulty) is not going to break even by a large margin.

However, I do think that HF should do this in a way that does not disadvantage Batch 2 and 3 owners. So immediately after Batch 3 would be ideal. Realistically that would be late December or early January.
sr. member
Activity: 826
Merit: 314
GIF by SOCIFI
I think c) is absolutely not going to happen. You're kidding yourself if you think they'll send you a Sierra in place of a BabyJet.
I would add d) Allow September BabyJet users to upgrade to a MPP-less November Sierra units for the difference in price ($1440), while keeping their place in line.
It would basically mean that you get 1.5TH/s in November (assuming they hit mid-late November) in the Sierra case for an extra $1440, instead of getting a 0.5TH/s BabyJet in mid-November and another 1.5TH/s in loose modules in mid-February.
It's still a win IMO though, and I think it's a lot more likely to happen.

Sorry but the sierra was on "sale" 3 days, when you could purchase it for 6000$. That is 400$ difference. I will pay them without any problem or they could also earn them as compensation for the delay, but that could be just to ambitious for my self as HF does not seem to take care of the first batch customers. I will be happy enough if the first one happens
At least they should give us the chance to change the orders or offer a compensation
legendary
Activity: 1274
Merit: 1004
I think c) is absolutely not going to happen. You're kidding yourself if you think they'll send you a Sierra in place of a BabyJet.
I would add d) Allow September BabyJet users to upgrade to a MPP-less November Sierra units for the difference in price ($1440), while keeping their place in line.
It would basically mean that you get 1.5TH/s in November (assuming they hit mid-late November) in the Sierra case for an extra $1440, instead of getting a 0.5TH/s BabyJet in mid-November and another 1.5TH/s in loose modules in mid-February.
It's still a win IMO though, and I think it's a lot more likely to happen.
legendary
Activity: 1974
Merit: 1077
^ Will code for Bitcoins
ImI
legendary
Activity: 1946
Merit: 1019

b.)

sr. member
Activity: 826
Merit: 314
GIF by SOCIFI
I will ask here before opening a poll. For the first batch customers, what your prefer:

a) BJ in mid november and stay with the MPP starting the day shipped
b) BJ in mid november and the MPP starting 1st november
c) Turn your order into a sierra that ships in late november and refuse to the MPP

I will take c) option. I think its the minimun HF should be offering the their customers as the hardware is the SAME , the only thing that changes is the case and more chips of course. At least give us the chance, you already got our money. The option b) is also nice but it depends on the hashrate and its a bit more risky.

Edit: if you think another fair option just write it down
donator
Activity: 1218
Merit: 1079
Gerald Davis
I'm planning to visit the HashFast office in SF this Wednesday.

It will be a fairly short affair (30m), but I would be happy to relay some forum questions in person. No guarantees I'll get answers though Smiley

Ask them if they are thinking about announcing MPP starts November 1st, regardless of the late delivery date. That's the least decent company would do after messing with their product value and company reputation so hard. If they answer you they are not even considering it, than I know what to think about them.

+1 on this.  Since HF planned on shipping by 1 Nov then then they had to plan on MPP going into effect 31 Jan.  Pushing the MPP back because they failed to ship on time (even if allowed per the wording of the MPP) is poor faith.   There is no reason the MPP window shouldn't be 1 Nov to 31 Jan.
Jump to: