|
JakeTri
|
 |
October 27, 2013, 03:34:47 PM |
|
Dave,
I am interested in purchasing a couple cases from Spotswood to house my October rigs.
Can you offer any insight as to whether anything has significantly changed with v3 rigs, that would preclude proper mounting when compared with v1 and v2 rigs ?
Cheers !
+1 |
BTC donations always welcome: 1JakeTriwbahMYp1rSfJbTn7Afd1w62p2q
|
|
|
|
|
|
|
|
|
|
Remember that Bitcoin is still beta software. Don't put all of your money into BTC!
|
|
|
Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction.
|
|
|
|
|
|
|
goxed
Legendary
 Offline
Activity: 1946
Merit: 1006
Bitcoin / Crypto mining Hardware.
|
|
October 28, 2013, 05:58:03 AM |
|
We are a couple days yet from getting our 16 chip boards with the trimmer on the board. I have some 8 chip boards that are an experimental OC board that use the same trim pot and I want to set the stage for how this will work.
In order to use this trimmer, you *must* have a multimeter and know how to measure resistance. If you don't know what I'm talking about, you aren't ready to try to OC your boards.
An easy place to take resistancevoltage measurements is to get ground off the M-board GND terminal (where you would connect direct 12V cables - the terminal screws). The red probe would go on the top metal contact of the Pulse inductor, which is the large bulky component on the H-card. Be sure not to also touch the caps that are nearby or you won't get a correct voltage.
While measuring the voltage, use your super-micro tweaker phillips screwdriver to *slowly* turn the trimmer clockwise for higher voltage or counter-clockwise for lower. The trimmer has an effective range of about 180-degrees. If you turn it down too far, you will see voltage begin to rise again.
Don't make voltage changes quickly. If you go higher than about .895v you better know what you are doing or you will kill your chips. I don't even know what voltages people are getting away with on these boards. Find a guide or post before you start mucking around. Overclocking *will* reduce the reliability of the boards.
FTFY We certainly don't want to connect an ohmmeter in that way! Will you be selling any 8-chip boards? It'd be nice to eliminate the voltage regulator bottleneck on overclocking. At what voltage would the chips be ruined if not actually mining and producing heat, such as with the chainminer process shut down? Is .895v where it just gets too hot, or where stuff starts shorting internally?  |
Revewing Bitcoin / Crypto mining Hardware.
|
|
|
|
darkfriend77
|
|
October 28, 2013, 06:53:55 AM |
|
What's that pic ... the new boards? and what's that pic ? ^^  |
|
|
|
intron
Sr. Member
Offline
Activity: 427
Merit: 251
- electronics design|embedded software|verilog -
|
|
October 28, 2013, 07:18:41 AM |
|
It's an experiment that went a bit out of control. The latest scientific explanation I heard is that "the boards don't like women." Not really sure about that though:) intron |
|
|
|
|
buzzdave (OP)
VIP
Sr. Member
Offline
Activity: 472
Merit: 250
|
|
October 28, 2013, 07:23:41 AM |
|
I've been playing with the Octal (8-chip board pictured middle). At .850v, which will be the factory trim setting for the 16 chip cards, you should get an average of between 2G and 2.2G per chip. So each card will provide 30G - 35G with proper fan cooling. By going to .890v I saw averages of 2.4G across 8 chips. This undoubtedly produces much higher current draw and heat for the gain you get.
In any case, the starter kits should produce 30 - 35 out of the box, and full rigs (proper fan cooling) could see 480 - 550GH/s. There *are* fan pins on the M-boards so use a good quality fan in addition to a desktop type fan to point at the rig. Expect more than 1w per GH/s on these! You should use separate PCI-e cables to power each of the power connectors. Use a 800w or higher PSU to have some headroom. Those little stick-on heatsinks sure couldn't hurt!
These cards are on the way to me from China now - FedEx Express, which will put them in our hands this week - depending on customs delays, it should be midweek. We will work non-stop to get them into your hands asap!
I hope that 25% extra hashpower will ease the pain of waiting all month! I've been chomping at the bit to get these rigs out to you guys!
Due to the lateness of the month, I won't be doing burn-in testing. We've seen a nice quality improvement as we've refined the production process as well as the design. Card quality is very stable now. This doesn't change the fact that there are going to be bad chips on some boards, and some outright bad boards. Some boards will also lose a chip after running for the first day or so. These bad boards will have to be returned for a replacement. Here's how the Express RMA process will work:
EXPRESS RMA
-file a Return at the megabigpower.com store.
-we will immediately ship you a replacement board.
-if we don't receive the bad piece you will be "charged" for it via a negative store balance - this will count against you if you order from us in the future.
-the negative store balance will be $600 per H-card and $1000 for an M-board, to deter people from abusing this service.
-if we see that you have a negative balance and are attempting to order on a different (new) store account, or some other attempt to abuse this service, we will choose not to do business with you.
Also, a change in the Refund Policy:
Refunds cost us money in lost fees to the payment providers and lost administrative time, as well as the fact that I've ordered the material from the manufacturer. At this point we are fully prepped for the shipping cycle, product is on the way and people have organized their schedules for the ship cycle to begin. For these reasons, all refunds placed after this posting are subject to a 5% processing fee. I'm sorry to add a cost to you for refunding, but backing out at this late date is very costly.
For everyone who "stayed in", thank you so much for being a customer! I'm looking forward to some entirely new products coming to the store soon! However, as I've mentioned before, store sales may be a bit scarce during November as we focus on our mining project.
Cheers all,
Dave
|
|
|
|
goxed
Legendary
Offline
Activity: 1946
Merit: 1006
Bitcoin / Crypto mining Hardware.
|
|
October 28, 2013, 11:19:53 AM |
|
What's that pic ... the new boards? and what's that pic ? ^^ Microwaved chips  I think the string project makes use of the internal voltage regulator of the bitfury chips. A few months back I had read that these chips had this feature where they could be connected in serial to obviate the need for a separate buck regulator. |
Revewing Bitcoin / Crypto mining Hardware.
|
|
|
|
darkfriend77
|
|
October 28, 2013, 11:32:23 AM |
|
What's that pic ... the new boards? and what's that pic ? ^^ Microwaved chips I think the string project makes use of the internal voltage regulator of the bitfury chips. A few months back I had read that these chips had this feature where they could be connected in serial to obviate the need for a separate buck regulator. Are those the same boards that ... Bitfury Strikes Back EU will have for sale .... or are those US only related? |
|
|
|
|
KNK
|
|
October 28, 2013, 11:44:51 AM |
|
I think the string project makes use of the internal voltage regulator of the bitfury chips.
No, it is clear from the picture, that the chips are not connected in series by power, but only for the SPI bus |
|
|
|
|
|
|
davecoin
|
|
October 28, 2013, 02:24:37 PM |
|
Spotswood - Tytus posted those in the 100/200TH mine thread. The new kits are still the 16 chip style boards.
Dave - That update was the best way to start my Monday. Thanks!
|
|
|
|
|
tacotime
Legendary
Offline
Activity: 1484
Merit: 1005
|
|
October 28, 2013, 05:12:26 PM |
|
Looking forward to my order shipping this week!!  |
XMR: 44GBHzv6ZyQdJkjqZje6KLZ3xSyN1hBSFAnLP6EAqJtCRVzMzZmeXTC2AHKDS9aEDTRKmo6a6o9r9j86pYfhCWDkKjbtcns |
|
|
|
xstr8guy
|
|
October 28, 2013, 05:53:22 PM |
|
Dave, is there any chance that you will have extra V2 H boards for sale so we can add to our October kits? I assume the boards that are currently available in the store are V1, correct? I like to add a couple H boards of both varieties if possible.
|
|
|
|
|
|
Trongersoll
|
|
October 28, 2013, 06:24:38 PM |
|
Trying to keep these version numbers strait is gonna be a pain. Hopefully, Dave will keep it all straight in the store. hmmm... maybe we need a V2 to V1 H board adapter, and vica versa?
|
|
|
|
|
|
xstr8guy
|
|
October 28, 2013, 07:34:37 PM |
|
Trying to keep these version numbers strait is gonna be a pain. Hopefully, Dave will keep it all straight in the store. hmmm... maybe we need a V2 to V1 H board adapter, and vica versa?
That would be great! I have an August kit and an October kit coming. And both will be only partially filled. An adapter (if possible) would be greatly appreciated since I only have a single Spotswood case. |
|
|
|
|
|
-Redacted-
|
|
October 28, 2013, 08:30:08 PM |
|
As I understand the versions:
V1 h-boards have the caps. V2 h-boards don't. Both fit either V1 or V2 m-boards.
V3 h-boards fit V-3 m-boards only due to the polarized connector.
The other boards that have been mentioned 8 chip, etc. haven't been given official version numbers yet.
|
|
|
|
|
|
Trongersoll
|
|
October 28, 2013, 08:34:57 PM |
|
As I understand the versions:
V1 h-boards have the caps. V2 h-boards don't. Both fit either V1 or V2 m-boards.
V3 h-boards fit V-3 m-boards only due to the polarized connector.
The other boards that have been mentioned 8 chip, etc. haven't been given official version numbers yet.
See, i forgot about the cap mod. this is why the store is going to have to clearly state which is which. Us meer mortals can't keep up with it. |
|
|
|
|
spiccioli
Legendary
Offline
Activity: 1378
Merit: 1003
nec sine labore
|
|
October 28, 2013, 08:42:53 PM |
|
As I understand the versions:
V1 h-boards have the caps. V2 h-boards don't. Both fit either V1 or V2 m-boards.
V3 h-boards fit V-3 m-boards only due to the polarized connector.
The other boards that have been mentioned 8 chip, etc. haven't been given official version numbers yet.
Tytus on picostock thread said that 8 chip boards are so noisy you can't put two on the same bus! spiccioli |
|
|
|
|
buzzdave (OP)
VIP
Sr. Member
Offline
Activity: 472
Merit: 250
|
|
October 28, 2013, 09:01:12 PM |
|
Dave, is there any chance that you will have extra V2 H boards for sale so we can add to our October kits? I assume the boards that are currently available in the store are V1, correct? I like to add a couple H boards of both varieties if possible.
I'm going to release V2 H boards at a new price - once we figure out how many we have available (so, after we ship all of October first, and may/may not be in November). Yes, the boards currently in the store are for V1, however a number of people who ordered additional H-cards with their October starter kits will get the proper H-cards for their M-boards. |
|
|
|
buzzdave (OP)
VIP
Sr. Member
Offline
Activity: 472
Merit: 250
|
|
October 28, 2013, 09:03:35 PM |
|
As I understand the versions:
V1 h-boards have the caps. V2 h-boards don't. Both fit either V1 or V2 m-boards.
V3 h-boards fit V-3 m-boards only due to the polarized connector.
The other boards that have been mentioned 8 chip, etc. haven't been given official version numbers yet.
Tytus on picostock thread said that 8 chip boards are so noisy you can't put two on the same bus! spiccioli 8 chip boards were experimental, and intended for the mine. These boards are two-layer and do have noise problems. However they work great when you clock them up and put one on each bus. A 16 bus M-board may be in the works - this will make just about anything run - noisy cards, EOL's, etc. Maybe these 8 chip boards would be sellable at that time...not sure. |
|
|
|
buzzdave (OP)
VIP
Sr. Member
Offline
Activity: 472
Merit: 250
|
|
October 28, 2013, 09:04:32 PM |
|
Trying to keep these version numbers strait is gonna be a pain. Hopefully, Dave will keep it all straight in the store. hmmm... maybe we need a V2 to V1 H board adapter, and vica versa?
That would be great! I have an August kit and an October kit coming. And both will be only partially filled. An adapter (if possible) would be greatly appreciated since I only have a single Spotswood case. If somebody made a V1 ->V3 plug adapter it would be pretty great! |
|
|
|
|
Poll
