HashFast Sierra's Owners Thread - page 6.

-ck

legendary

Activity: 4088

Merit: 1631

Ruu \o/

Quote from: solarion on April 21, 2014, 06:28:56 PM

Quote from: -ck on April 21, 2014, 06:28:27 PM

That's right. The code is designed to keep them 85~88 degrees. Any extra cooling does not improve their performance or help their longevity and only generates more noise and consumes more power.

so they do not throttle at 85c? When you say "keep them at 85~88" does that imply that there's an autoclocking mechanism at work? Similar to your autoclocking code with Avalons?

No there is heaps of headroom at 85 degrees. Only the fans adjust to keep them at that temperature. They only clock down at much higher temperatures.

solarion

hero member

Activity: 966

Merit: 513

Quote from: jddebug on April 21, 2014, 06:21:18 PM

Quote from: solarion on April 21, 2014, 04:05:43 PM

Now that I've had some time to kick the tires and ambient temps have risen dramatically here, it's pretty clear that the sierra needs some cooling help, particularly overclocked. I've obtained appropriate fasteners to attach 3x delta afb1212she 120mm fans. These I will add to the front of the unit to create a push pull airflow arrangement through the radiators. Forgive me if all this has been gone over previously, I haven't been attentive to threads dealing with actual operation of the sierra as I figured I'd never see one.

I'll post the results of this operation if anyone is interested.

They are supposed to run about 85C. Thats the sweet spot temperature. Absolutely no reason that I'm aware of to run them cooler.

Hey jd, my understanding is that 85c is the point in which the sierra begins to throttle. That doesn's sound like a sweetspot. Heat kills electronics and 85c is hot. Not sure where the single temp reading is being generated from however.

Quote from: -ck on April 21, 2014, 06:28:27 PM

That's right. The code is designed to keep them 85~88 degrees. Any extra cooling does not improve their performance or help their longevity and only generates more noise and consumes more power.

so they do not throttle at 85c? When you say "keep them at 85~88" does that imply that there's an autoclocking mechanism at work? Similar to your autoclocking code with Avalons?

-ck

legendary

Activity: 4088

Merit: 1631

Ruu \o/

Quote from: jddebug on April 21, 2014, 06:21:18 PM

Quote from: solarion on April 21, 2014, 04:05:43 PM

Now that I've had some time to kick the tires and ambient temps have risen dramatically here, it's pretty clear that the sierra needs some cooling help, particularly overclocked. I've obtained appropriate fasteners to attach 3x delta afb1212she 120mm fans. These I will add to the front of the unit to create a push pull airflow arrangement through the radiators. Forgive me if all this has been gone over previously, I haven't been attentive to threads dealing with actual operation of the sierra as I figured I'd never see one.

I'll post the results of this operation if anyone is interested.

They are supposed to run about 85C. Thats the sweet spot temperature. Absolutely no reason that I'm aware of to run them cooler.

That's right. The code is designed to keep them 85~88 degrees. Any extra cooling does not improve their performance or help their longevity and only generates more noise and consumes more power.

jddebug

sr. member

Activity: 446

Merit: 250

Quote from: solarion on April 21, 2014, 04:05:43 PM

Now that I've had some time to kick the tires and ambient temps have risen dramatically here, it's pretty clear that the sierra needs some cooling help, particularly overclocked. I've obtained appropriate fasteners to attach 3x delta afb1212she 120mm fans. These I will add to the front of the unit to create a push pull airflow arrangement through the radiators. Forgive me if all this has been gone over previously, I haven't been attentive to threads dealing with actual operation of the sierra as I figured I'd never see one.

I'll post the results of this operation if anyone is interested.

They are supposed to run about 85C. Thats the sweet spot temperature. Absolutely no reason that I'm aware of to run them cooler.

Legend21

hero member

Activity: 728

Merit: 500

My order 2992 was also batch 3 sierra.. I have ask for refund since 15 january, i send them 1000 mails about refund so they will really make a stupid mistake if they still sending the sierra , but im sure they know that im want a refund because i ask them too much and e-mail them 1000 times.

I just wait for my refund of 2992. I also will update here. i dont believe why you guys still wait for that rig, that is now nothin worth to mine... if i was you i should ask already for a refund.. my opinun then..

QuiveringGibbage

hero member

Activity: 617

Merit: 543

http://idontALT.com

Code:

cgminer version 4.2.3 - Started: [2014-04-12 21:14:20]
----------------------------------------------------------------------------------------------------
(5s):989.7G (1m):1.286T (5m):1.253T (15m):1.265T (avg):1.304Th/s
A:247062578 R:631909 HW:1952292 WU:18217.9/m | ST: 4 SS: 119 NB: 1645 LW: 266003382 GF: 2 RF: 1
Connected to au.ozco.in diff 627 with stratum as user quiveringgibbage.larry
Block: 40fc94d8... Diff:6.98G Started: [07:57:51] Best share: 291M
----------------------------------------------------------------------------------------------------
[U]SB management [P]ool management [S]ettings [D]isplay options [Q]uit
6: HFS LARRY : 593MHz 86C 19% 0.79V | 799.3G / 1.283Th/s WU:17935.4/m A:33200277 R:116622 HW:125393
----------------------------------------------------------------------------------------------------
[2014-04-22 08:10:51] Accepted 2650d732 Diff 1.71K/627 HFS 0 pool 0
[2014-04-22 08:10:51] Accepted 22782c96 Diff 1.9K/627 HFS 0 pool 0

fans at default, not sure what my ambient is atm

QG

solarion

hero member

Activity: 966

Merit: 513

84c @ 604 mhz. Got the fans on and temps are 79c presently. I don't believe I modified fan operation with my .bat file, but I'll give that a whirl too. Ambient is 28c.

REALLY ticks me off that hashlast is operated by such scumbags. I really like the unit.

Edit: well that doubled the volume. lol

SolarSilver

legendary

Activity: 1112

Merit: 1000

Quote from: solarion on April 21, 2014, 04:05:43 PM

I'll post the results of this operation if anyone is interested.

I've put the --hfa-fan at 100%, I'm getting temperatures of about 80 degrees Celcius at 604 MHz

What numbers are you looking at, without the extra fans?

solarion

hero member

Activity: 966

Merit: 513

Now that I've had some time to kick the tires and ambient temps have risen dramatically here, it's pretty clear that the sierra needs some cooling help, particularly overclocked. I've obtained appropriate fasteners to attach 3x delta afb1212she 120mm fans. These I will add to the front of the unit to create a push pull airflow arrangement through the radiators. Forgive me if all this has been gone over previously, I haven't been attentive to threads dealing with actual operation of the sierra as I figured I'd never see one.

I'll post the results of this operation if anyone is interested.

solarion

hero member

Activity: 966

Merit: 513

August delivery? lol

You won't be fighting with me. All yours.

QuiveringGibbage

hero member

Activity: 617

Merit: 543

http://idontALT.com

Quote from: jddebug on April 19, 2014, 11:15:16 PM

Why are you selling?

I want this now... [Group Buy] 5.4 TH/s miner for $4,495, August delivery - https://bitcointalksearch.org/topic/m.6278746

I want both, but we can't have everything we want

QG

jddebug

sr. member

Activity: 446

Merit: 250

Quote from: QuiveringGibbage on April 19, 2014, 09:53:10 PM

Anyone thinking of selling their Sierra unit? I ~~did~~ am

[WTS] HashFast Sierra 1.3THs, In-hand in Australia - https://bitcointalksearch.org/topic/wts-hashfast-sierra-13ths-in-hand-in-australia-6btc-576381

I'll be interested to see what offers I get. Altho the market size is much more limited in Australia I think.

I'll miss LARRY tho, was one of my best and easiest to run :~( Not too noisey as compared with my other miners.

Hash fast,
QG

More here: http://imgur.com/a/mRbMZ#o7nT7Jv

Why are you selling?

QuiveringGibbage

hero member

Activity: 617

Merit: 543

http://idontALT.com

Anyone thinking of selling their Sierra unit? I ~~did~~ am

[WTS] HashFast Sierra 1.3THs, In-hand in Australia - https://bitcointalksearch.org/topic/wts-hashfast-sierra-13ths-in-hand-in-australia-6btc-576381

I'll be interested to see what offers I get. Altho the market size is much more limited in Australia I think.

I'll miss LARRY tho, was one of my best and easiest to run :~( Not too noisey as compared with my other miners.

Hash fast,
QG

More here: http://imgur.com/a/mRbMZ#o7nT7Jv

solarion

hero member

Activity: 966

Merit: 513

East coast usa.

kevin911

member

Activity: 87

Merit: 10

Quote from: solarion on April 19, 2014, 05:14:25 PM

Quote from: kevin911 on April 19, 2014, 04:37:45 PM

Solarion Can you tell us where you are in the world are you cause your delivery was pretty fast.

Fast because I paid for next day early am delivery. It was over $300 for shipping. Just more theft. In sept of last year it made sense. Now it looks retarded to pay that much for shipping. Not to mention the fact that the morons at ciaratech sent it to an old address. I had to contact fedex to have it held and drive 300 miles to retrieve it.

I have also paid for the express delivery but I'm in the UK. Like you i also thought it was a good idea at the time. I don't think mine will get to me next day tho, that's why i was curious as to where you are in the world.

solarion

hero member

Activity: 966

Merit: 513

Quote from: kevin911 on April 19, 2014, 04:37:45 PM

Solarion Can you tell us where you are in the world are you cause your delivery was pretty fast.

Fast because I paid for next day early am delivery. It was over $300 for shipping. Just more theft. In sept of last year it made sense. Now it looks retarded to pay that much for shipping. Not to mention the fact that the morons at ciaratech sent it to an old address. I had to contact fedex to have it held and drive 300 miles to retrieve it.

kevin911

member

Activity: 87

Merit: 10

Solarion Can you tell us where you are in the world are you cause your delivery was pretty fast.

solarion

hero member

Activity: 966

Merit: 513

My initial impressions of the product(after only 18hrs or so):

It took me all of 15mins to get the sierra running and most of that was unpacking. It comes with everything necessary to get it online, save a control unit of some type. It hashes at advertised speed and even overclocks a bit(currently at 604Mhz). I haven't hooked power meters to it, because I've been too busy/lazy to hunt down a second one.

Bottom line: I'm delighted with the product thus far...save for the hashfast tag on the front. If these guys weren't such buckets of slime I'd likely have ordered many more products from them. Too bad they chose to betray those that trusted them rather than build a relationship.

kevin911

member

Activity: 87

Merit: 10

Well, order 177x and 1955 have been dispatched + 2211 (winnit) i wonder who will be next in the hashfast bingo.
Anyone with a higher order number than 1955 had any notice of their order being dispatched yet?
I'm 2434, still waiting & only 11 days to go.

solarion

hero member

Activity: 966

Merit: 513

My order shipped today. Naturally it was shipped to the wrong address despite my numerous efforts to reach the criminals. Roll Eyes

Scamfast fails at every single point. Retarded ferrets could run a company better.

All the same I'd like to put this whole mess in the rearview. I will never again place a pre-order, and I will never again deal with an amerikan bitcoin mining equipment manufacturer. Every single one has been run by corrupt psychopaths. There's nothing to stop these scumbags and their armies of lapdog lawyers from running these frauds in the us.

Topic: HashFast Sierra's Owners Thread - page 6. (Read 23757 times)