GRIDSEED G-BLADE Overclocking 7Mh/s, improvements and repair - page 21.

wolfey2014

sr. member

Activity: 378

Merit: 250

Quote from: bamsterdam on May 15, 2014, 05:26:06 PM

thanks for your reply. I dont understand why cg miner is saying 6mh/s for every g blade at 888mhz if its not true? ..

Just like I told you in response to your PM late this morning. 838 is being touted as the sweet spot for non-volt-modded Blades.

Perhaps your lower than expected hash rate is due to the pool's stratum connection and or the difficulty setting being used by the port your Blades are connected to. These two factors play a HUGE role in pool side results be they positive or negative.

Try a different pool, try resetting via re-powering everything before you go fishing um, I mean pool hashing again Wink

Try 838MHz clock. It's your best bet right now, to wit, 'hasher toutingness' on here Wink

Try the same pool again or try a different pool.
I'm getting really good results with wammamine.com as far as local/pool hash ratios go.

Hope this helps!
Woof

natbyte

member

Activity: 70

Merit: 10

How many hardware errors over a good run of say 6 hours? Post a screenshot of your cgminer screen, you may have got a miner that runs happily at 888 Mhz however remember each hardware error is lost income and wasted power.

bamsterdam

sr. member

Activity: 453

Merit: 261

Look Morty magic internet money

thanks for your reply. I dont understand why cg miner is saying 6mh/s for every g blade at 888mhz if its not true? ..

natbyte

member

Activity: 70

Merit: 10

You will struggle to get past 850 Mhz without volt molding, out of 10 individual blades this was my safe limit, many were happier at 838 Mhz with much lower hardware errors than 850 Mhz, this seems to be the sweet spot if overclocking non volt modded blades.

bamsterdam

sr. member

Activity: 453

Merit: 261

Look Morty magic internet money

Having some trouble optimizing my blades.. First we used cg miner at 888mhz and it said it was hashing at 3.02mh/s each blade so 6.04 / g blade. But I started to doubt if this hashrate was true since on the pools I was getting a lot less hashrate. Wolfey said to my I have to use cpu miner 1.0b. and use 838mhz I'm going to try that tonight

Any other tips that could maximize the hashrate without voltmodding? First I want to have it stable ate at least 3mh/s each blade before I want to try voltmodding.

I use a computer with windows 7 but I'm going to switch it to linux I think. Any other tips

?

Blisk

sr. member

Activity: 412

Merit: 250

Ok I will wait, to see what happends when you change it.

J4bberwock

hero member

Activity: 840

Merit: 1000

Quote from: Blisk on May 14, 2014, 10:13:38 AM

Quote from: J4bberwock on May 14, 2014, 09:49:25 AM

Quote from: Blisk on May 14, 2014, 07:33:45 AM

Quote from: J4bberwock on May 14, 2014, 01:27:00 AM

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

did you changed VRM already?
so you did replace 2x IRF5300 and 1x IRFH5301 with 2x CSD17556 and 1x CSD16321?

And they match, pin to pin, just get old one off and put new one on board?

Did anybody find some great prices for CSD17556 and 1x CSD16321?

Hi, I haven't changed IRF5300 and IRF5302 on my blade.
2x CSD17556 and 1x CSD16321 were on a new blade I just received and I'm voltmodding too.
They are pin to pin compatible.

I ordered IRF7004 (expensive) that I received today to replace the 5300-5302 ones on the "old" blade.

but they are more powerfull or not?
it is not worth to change it if not

Hi, I don't think it's woth the change. They still shut down when using 47K resistor.

I'll upgrade to IRF7004 when I'll get my new SMD no clean solder paste

Blisk

sr. member

Activity: 412

Merit: 250

Quote from: J4bberwock on May 14, 2014, 09:49:25 AM

Quote from: Blisk on May 14, 2014, 07:33:45 AM

Quote from: J4bberwock on May 14, 2014, 01:27:00 AM

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

did you changed VRM already?
so you did replace 2x IRF5300 and 1x IRFH5301 with 2x CSD17556 and 1x CSD16321?

And they match, pin to pin, just get old one off and put new one on board?

Did anybody find some great prices for CSD17556 and 1x CSD16321?

Hi, I haven't changed IRF5300 and IRF5302 on my blade.
2x CSD17556 and 1x CSD16321 were on a new blade I just received and I'm voltmodding too.
They are pin to pin compatible.

I ordered IRF7004 (expensive) that I received today to replace the 5300-5302 ones on the "old" blade.

but they are more powerfull or not?
it is not worth to change it if not

J4bberwock

hero member

Activity: 840

Merit: 1000

Quote from: Blisk on May 14, 2014, 07:33:45 AM

Quote from: J4bberwock on May 14, 2014, 01:27:00 AM

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

did you changed VRM already?
so you did replace 2x IRF5300 and 1x IRFH5301 with 2x CSD17556 and 1x CSD16321?

And they match, pin to pin, just get old one off and put new one on board?

Did anybody find some great prices for CSD17556 and 1x CSD16321?

Hi, I haven't changed IRF5300 and IRF5302 on my blade.
2x CSD17556 and 1x CSD16321 were on a new blade I just received and I'm voltmodding too.
They are pin to pin compatible.

I ordered IRF7004 (expensive) that I received today to replace the 5300-5302 ones on the "old" blade.

Blisk

sr. member

Activity: 412

Merit: 250

Quote from: J4bberwock on May 14, 2014, 01:27:00 AM

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

did you changed VRM already?
so you did replace 2x IRF5300 and 1x IRFH5301 with 2x CSD17556 and 1x CSD16321?

And they match, pin to pin, just get old one off and put new one on board?

Did anybody find some great prices for CSD17556 and 1x CSD16321?

J4bberwock

hero member

Activity: 840

Merit: 1000

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

racebyu

sr. member

Activity: 346

Merit: 260

Quote from: J4bberwock on May 13, 2014, 07:01:28 AM

Quote from: racebyu on May 12, 2014, 09:09:46 PM

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

racebyu

sr. member

Activity: 346

Merit: 260

Quote from: J4bberwock on May 13, 2014, 05:08:50 PM

with 44k resistor, the board looks stable at 1100 MHz, 1113 gave a few HW errors.

Even my 0.75mm² wires are getting warm Shocked

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?

J4bberwock

hero member

Activity: 840

Merit: 1000

with 44k resistor, the board looks stable at 1100 MHz, 1113 gave a few HW errors.

Even my 0.75mm² wires are getting warm Shocked

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

J4bberwock

hero member

Activity: 840

Merit: 1000

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.

wolfey2014

sr. member

Activity: 378

Merit: 250

Quote from: ZiG on May 13, 2014, 12:53:37 AM

Quote from: wolfey2014 on May 12, 2014, 04:26:23 PM

Quote from: J4bberwock on May 12, 2014, 03:37:59 PM

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! Wink

<----

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 Grin

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! Grin

J4bberwock

hero member

Activity: 840

Merit: 1000

Quote from: racebyu on May 12, 2014, 09:09:46 PM

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.

ZiG

sr. member

Activity: 406

Merit: 250

Quote from: wolfey2014 on May 12, 2014, 04:26:23 PM

Quote from: J4bberwock on May 12, 2014, 03:37:59 PM

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! Wink

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 Grin

Might turn those hashers into thrashers!
Woof! Woof!

CSD17556 is 100A/215A...

http://www.ti.com/lit/ds/symlink/csd17556q5b.pdf ...

Cheers,

ZiG

racebyu

sr. member

Activity: 346

Merit: 260

Quote from: wolfey2014 on May 12, 2014, 10:29:50 AM

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! Wink

Anyway, I am not impressed!

I noticed also on the Zoomhash site that they have a 22Mhs bundle that is 4 of the original
Blade units at stock freq and a RasPi and hardware for $2999.00 thats only $750.00 a Blade!
Up the freq and you should be able to get close to 28Mhs with 4 and at $3K is $1200 less
then their new units but the power draw might be more then 30%.

http://zoomhash.com/collections/top-sellers/products/22mhs-all-accessories-included-kit-door-to-door-within-5-business-days-guaranteed

Individual Gridseed Blades are going for $899 each now.

racebyu

sr. member

Activity: 346

Merit: 260

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.

Topic: GRIDSEED G-BLADE Overclocking 7Mh/s, improvements and repair - page 21. (Read 74047 times)