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J4bberwock (OP)
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May 12, 2014, 07:38:13 AM |
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Hey Wolfey,
The post wasn't there a few hours ago, but they are facing the exact same limitations as me, but they haven't noticed the ferrite beads overheating. Thermal picture wold be nice to identify where are the hot/weak spots.
I managed to get the blade stable for 25 minutes at 1125Mhz, giving 3800Kh/s for the panel with 47K resistor, but after that, it's overheating, even with a fan blowing directly on it and stops sending shares
It's actually running with very few hw errors at 1063Mhz with 42k resistor.
TO-220 package might be a good idea to replace the 09N03. Datasheet says 25V 50A, but power dissipation might be too low I'll have to check if I have an acceptable replacement when back home next week.
Hey J4bberwock , I'm thinking of volt modding my Blade with your configuration but just need some advice - later in this forum you go on to say you've got this running stable at 1125Mhz and 7.3Mh/s, how are you actively cooling this setup? What is the temperature you try and stay below? And lastly, how are you powering it? (Direct wiring, and if so, where? Or through the notmal power inlet with the ferrite beads removed?) Thanks again - and I'm quite impressed with your hash speed, tho I'm unsire if anyone else will come close to it as most of the miners don't run 6.5 Mh/s at 875Mhz stock  Hi, actuelly, my best setup with cpuminer is MHz with zero HW errors for 24 hours. I haven't uset direct wiring yet. still waiting for PCIE 6 pin plugs for the wire I'll also try to bypass the ferrite beads since I'm using high quality server PSU. Regarding the cooling, custom cover plus secondary fan blowing on the powerboard. I also ordered a high CFM fan to replace the stock one. And don't forget the heatsinks under the PCB and on the parts to cool the vrm anc choke. Extra heatsinks on the chips may help on high frequencies to get less HW errors. |
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wolfey2014
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May 12, 2014, 02:29:50 PM |
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I presume you've seen Zoom Thrash's new overpriced http://zoomhash.com/collections/top-sellers/products/the-lion-64-chips-1-blade-13-5mh-s-450w hasher. It looks similar to the new Zues Thunder coming out at 'the same time',,, same delivery date! Interesting, eh? I do not believe ZH created their own exclusive Blade for one second! Sounds like the desperate throws of a dying company to me. Besides, the Blades are just a stop over along the way to better and cheaper tech coming out in just days to weeks if not already circumvented by same...IMO!  Anyway, I am not impressed! |
I Modify Miners Professionally! PM me for details!
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alienesb
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May 12, 2014, 02:40:37 PM |
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I wouldn't say desperate at all, they are just a reseller selling badged miners just like the others. At least Hashra has a cool looking case.
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wolfey2014
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May 12, 2014, 02:48:39 PM |
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I wouldn't say desperate at all, they are just a reseller selling badged miners just like the others. At least Hashra has a cool looking case.
No, they say that it is their OWN creation, which I find highly suspicious! But it is obviously re-badged! They are lying through their cyber teeth! Disgusting! |
I Modify Miners Professionally! PM me for details!
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J4bberwock (OP)
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May 12, 2014, 04:08:08 PM |
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Yes, they look similar, but zeus is 4 chips 15 watt and zoomhash is 6 chips 45 watt. I'm wondering which one will overclock the best. 6 chips could have more room than 4, but they are clearly different generation if you consider the power draw. Probably 55nm vs 28nm. Anyway, I ordered 1 of each 200$ ones to play. back on topic, I received a new blade today that I'll mod. I'm still waiting for other parts to do the mod, but I also received 44.2k 0603 resistors. |
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wolfey2014
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May 12, 2014, 04:14:05 PM |
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Yes, they look similar, but zeus is 4 chips 15 watt and zoomhash is 6 chips 45 watt. I'm wondering which one will overclock the best. 6 chips could have more room than 4, but they are clearly different generation if you consider the power draw. Probably 55nm vs 28nm. Anyway, I ordered 1 of each 200$ ones to play. back on topic, I received a new blade today that I'll mod. I'm still waiting for other parts to do the mod, but I also received 44.2k 0603 resistors. Sorry? You ordered 1 of each 200$?  ? What exactly did you order? I don't understand.... |
I Modify Miners Professionally! PM me for details!
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J4bberwock (OP)
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May 12, 2014, 06:31:35 PM |
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Yes, they look similar, but zeus is 4 chips 15 watt and zoomhash is 6 chips 45 watt. I'm wondering which one will overclock the best. 6 chips could have more room than 4, but they are clearly different generation if you consider the power draw. Probably 55nm vs 28nm. Anyway, I ordered 1 of each 200$ ones to play. back on topic, I received a new blade today that I'll mod. I'm still waiting for other parts to do the mod, but I also received 44.2k 0603 resistors. Sorry? You ordered 1 of each 200$? ? What exactly did you order? I don't understand.... zoomhash wolf zeusminer blizzard |
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J4bberwock (OP)
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May 12, 2014, 07:37:59 PM
Last edit: May 12, 2014, 07:54:59 PM by J4bberwock |
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Quick update on the new blade.
A few things have changed on the board.
The overheating ferrite beads were replaced by Gridseed. They are now 0R resistors to make the bridge clean.
The VRM have also been replaced by 2x CSD17556 and 1x CSD16321.
I'll dig the datasheet to check if they are better or not.
Maybe my hopes for 8MH+ Blade will be fulfilled
Edit: looks like they are really close to the previous ones
Let's see how it works when overvolted.
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wolfey2014
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May 12, 2014, 08:26:23 PM |
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Quick update on the new blade.
A few things have changed on the board.
The overheating ferrite beads were replaced by Gridseed. They are now 0R resistors to make the bridge clean.
The VRM have also been replaced by 2x CSD17556 and 1x CSD16321.
I'll dig the datasheet to check if they are better or not.
Maybe my hopes for 8MH+ Blade will be fulfilled
Edit: looks like they are really close to the previous ones
Let's see how it works when overvolted.
CSD17556 = 30V / 30A MOSFET - Surface Mount x 2 = 60A baby! CSD16321 = 25V / 100A / 200A Pulse Current = NICE! Are they using gate drivers on these babies? I would = even more efficient use of power. You might be right J4. 8MH++ even, maybe, hopefully  Might turn those hashers into thrashers! Woof! Woof! |
I Modify Miners Professionally! PM me for details!
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J4bberwock (OP)
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May 12, 2014, 08:31:19 PM |
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Quick update on the new blade.
A few things have changed on the board.
The overheating ferrite beads were replaced by Gridseed. They are now 0R resistors to make the bridge clean.
The VRM have also been replaced by 2x CSD17556 and 1x CSD16321.
I'll dig the datasheet to check if they are better or not.
Maybe my hopes for 8MH+ Blade will be fulfilled
Edit: looks like they are really close to the previous ones
Let's see how it works when overvolted.
CSD17556 = 30V / 30A MOSFET - Surface Mount x 2 = 60A baby! CSD16321 = 25V / 100A / 200A Pulse Current = NICE! Are they using gate drivers on these babies? I would = even more efficient use of power. You might be right J4. 8MH++ even, maybe, hopefully Might turn those hashers into thrashers! Woof! Woof! 8MH or magic black smoke |
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racebyu
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May 13, 2014, 01:09:46 AM |
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Any photos of the new blade version circuit board layout.
The 0R resistors can be soldered in easily but are the chips
a direct swap on the board or is it a new layout?
Also anyone know what Vmod resistor size are they putting in?
Would be nice to supercharge the older original boards.
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ZiG
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May 13, 2014, 04:53:37 AM |
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Quick update on the new blade.
A few things have changed on the board.
The overheating ferrite beads were replaced by Gridseed. They are now 0R resistors to make the bridge clean.
The VRM have also been replaced by 2x CSD17556 and 1x CSD16321.
I'll dig the datasheet to check if they are better or not.
Maybe my hopes for 8MH+ Blade will be fulfilled
Edit: looks like they are really close to the previous ones
Let's see how it works when overvolted.
CSD17556 = 30V / 30A MOSFET - Surface Mount x 2 = 60A baby! CSD16321 = 25V / 100A / 200A Pulse Current = NICE! Are they using gate drivers on these babies? I would = even more efficient use of power. You might be right J4. 8MH++ even, maybe, hopefully Might turn those hashers into thrashers! Woof! Woof! CSD17556 is 100A/215A... http://www.ti.com/lit/ds/symlink/csd17556q5b.pdf ... Cheers, ZiG |
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J4bberwock (OP)
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May 13, 2014, 11:01:28 AM |
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Any photos of the new blade version circuit board layout.
The 0R resistors can be soldered in easily but are the chips
a direct swap on the board or is it a new layout?
Also anyone know what Vmod resistor size are they putting in?
Would be nice to supercharge the older original boards.
It's the same layout, simply ferrite replaced with 0 resistors and VRM changed for maybe better ones pin to pin compatible. |
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wolfey2014
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May 13, 2014, 01:25:24 PM |
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Quick update on the new blade.
A few things have changed on the board.
The overheating ferrite beads were replaced by Gridseed. They are now 0R resistors to make the bridge clean.
The VRM have also been replaced by 2x CSD17556 and 1x CSD16321.
I'll dig the datasheet to check if they are better or not.
Maybe my hopes for 8MH+ Blade will be fulfilled
Edit: looks like they are really close to the previous ones
Let's see how it works when overvolted.
CSD17556 = 30V / 30A MOSFET - Surface Mount x 2 = 60A baby! <----CSD16321 = 25V / 100A / 200A Pulse Current = NICE! Are they using gate drivers on these babies? I would = even more efficient use of power. You might be right J4. 8MH++ even, maybe, hopefully Might turn those hashers into thrashers! Woof! Woof! CSD17556 is 100A/215A... http://www.ti.com/lit/ds/symlink/csd17556q5b.pdf ... Cheers, ZiG Hah hah! Worked just like fly paper! |
I Modify Miners Professionally! PM me for details!
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J4bberwock (OP)
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May 13, 2014, 03:21:17 PM |
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44.2k resistors added, screw power terminal, plus all the extra heatsinks except the ones on the back of the PCB at the moment.
New fan 120x120mm ultra kaze by scythe 130CFM ready to be added in place of the stock one with wide body for the blade.
Pics and results soon.
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J4bberwock (OP)
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May 13, 2014, 09:08:50 PM |
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with 44k resistor, the board looks stable at 1100 MHz, 1113 gave a few HW errors. Even my 0.75mm² wires are getting warm  I'll check power draw tomorrow but still hot on the powerboard, it will need side cooling even with the monster fan because the choke hides the VRM from the airflow. I'll try high heatsinks from accelero L2 kits on the VRM to bring some airflow on the heatsinks |
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racebyu
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May 14, 2014, 12:11:17 AM |
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with 44k resistor, the board looks stable at 1100 MHz, 1113 gave a few HW errors. Even my 0.75mm² wires are getting warm I'll check power draw tomorrow but still hot on the powerboard, it will need side cooling even with the monster fan because the choke hides the VRM from the airflow. I'll try high heatsinks from accelero L2 kits on the VRM to bring some airflow on the heatsinks What is your hash rate now on each board at 1100Mhz? |
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racebyu
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May 14, 2014, 01:16:58 AM |
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Any photos of the new blade version circuit board layout.
The 0R resistors can be soldered in easily but are the chips
a direct swap on the board or is it a new layout?
Also anyone know what Vmod resistor size are they putting in?
Would be nice to supercharge the older original boards.
It's the same layout, simply ferrite replaced with 0 resistors and VRM changed for maybe better ones pin to pin compatible. Thats great, should be able to swap the old ones out and put back in the new ones. I just looked around and found the 100A for $2.20 and the 30A for $5.50 |
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J4bberwock (OP)
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May 14, 2014, 05:27:00 AM |
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1100 MHz, 3.74Mh/s for the first board. I'll try higher resistor and try the second board one once I add the side fan to cool the VRM
1063MHz gives 3.62Mh/s
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