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401  Bitcoin / Bitcoin Discussion / Re: How long did it take you to make 1 BTC? on: October 19, 2015, 09:09:51 PM
Mined my first 1 BTC on a AMD HD6950 back in the summer of 2011 =P
Took bout 1 day.

I wasnt sure if BTC was gonna make it half a decade since then ... we're almost there =)
402  Bitcoin / Bitcoin Discussion / Re: Buying Bitcoin was a worst decision of my life on: October 19, 2015, 09:05:05 PM
How many of you can admit that buying Bitcoin was a worst decision of your life? I can. I'm approximately -50% in fiat funds now.
Sooner or later some type of bank chain or coin will come and gain mass adoption - while bitcoin still remaining a geek coin
to buy weed.
I know this forum is more like a cult than a information channel what comes to honest opinions but I know there's others
on this forum who feel the same, almost all of us. Don't let your cult believer ego come in the way.

Really it comes down to where do u place ur trust, corrupt fiat currencies or a currency which cant be altered on an elite fews whims.

Only people who believe in the latter will realize Bitcoin's potential future and hold long term for it to become a reality. If it never does, oh well at least it was a belief in a system better than fiat cronies.

If bitcoin or crypto simply fades away because noone wanted to do anything with it then... its proof of the reality everyone loves being a slave to "thesystem"(fiatland).
403  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: October 19, 2015, 08:15:54 PM
BTW, heres an interesting tidbit for yall, I think why many titans "dies end up dieing permanently" are infact because the DCDC modules burn out. After looking over the tech sheet, its easy to see why. If the ambient temp (surface temp of the inductor) reaches the 80-90's these are only rated for 25-30A to maintain their expected lifespan.
The fact some folks run them at these temps 24/7 and draw over 40A through them, its easy to see why the DCDC's would die ....

When vegas measured the temp of the inductor from the side, it measured about 55C , the webgui showed about just over 60C ... so there is a really small delta between the ambient temp & internal junction temp(webgui reading) of these DCDC's

Meaning, if ur webgui shows 90C area, the inductor is probably not far behind, most likely running in the low 80's ... which means nowhere near 40A should be pulled from the DCDC at that point.

What would be the safest Maximum DCDC temp setting on advance page of your mod regardless of the ambient temp? I currently set it at 90 and all dies run at 325, should I lower it?




Ultimately its up to the user and their preferences of how long they want the machine to potentially last.
Its hard to answer ur question definitively due to so many environment variables & operating conditions between cubes.
What everyone needs is a laser temp reader to take temperature checks of the inductor on the DCDC modules while its hashing. If its true that the inductor is generally within 10C of the webgui stat then a SAFE MAX temp @ 40A is... between 70 & 75C, so webgui stat should no higher than 80-85C.

Whats interesting is with more airflow these DCDC's are rated for more current safely at any given temp, even if the temp is the same vs less/no airflow.

For example, temp of inductor 80C @ no airflow is safe up to 34A.  80C @ 2-3m/s of airflow is safe up to 40A
At 100C inductor temp: 20A safe for no airflow, 30A safe for 3m/s of airflow

Another facet of max life from DCDC's is keeping them at their rated 40A max or lower. I know most of mine in the titan @ 325mhz are at 40-41A ... which I imagine aint bad, but I think around 43A ur starting to really push it. The actual Current limiting function of the DCDC's kicks in at 46A

This is the life expectancy of the DCDC's given everything is within spec:
MTBF at 90% confidence level = 11.52 Mh

So, safe bet would be to keep DCDC amperage at 40 or below if I wanted the cubes to last longer? I see at 325 some of them goes as high as 44.

Yeah, I would say on dies which drive the DCDC's above 41A , I would first try to lower the voltage a notch, if thats not stable then put the die at 300mhz and then tweak the voltage down as desired.
Also, like I mentioned above, I would keep the DCDC temp threshold at 85C(if ur trying to achieve longest lifespan that should be the max)
404  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: October 19, 2015, 07:13:38 PM
I can test it of sent me firmware


Um, Im not trying to reverse engineer that file. I was saying if someone wanted 350mhz, the key to unlocking it is in that file. Im not willing to do it and either brick my fpga or burn up my titan LOL

I bet KNC kept it closed source cuz they didnt wanna have to service a bunch of peoples cubes who abused them by running them at 350mhz and frying everything.
405  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: October 19, 2015, 07:08:36 PM
BTW, if anyone feels like tackling it.... LOL

350mhz is doable, if ur freaking crazy and want to melt ur titan asap, but it is doable.
The key lies in reverse engineering the spimux-titan.rbf binary file. Its closed source, maybe, if ur lucky u can try to beg KNC to release the source =)

BE WARNED!, ur DCDC's will probably catch fire and ur PSU will melt eventually and power cables turn into burnt spaghetti noodles but what the hay!!! YOLO!! =P
If anyone loves fireworks, 350mhz+ is the way to go!
406  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: October 19, 2015, 07:01:49 PM
BTW, heres an interesting tidbit for yall, I think why many titans "dies end up dieing permanently" are infact because the DCDC modules burn out. After looking over the tech sheet, its easy to see why. If the ambient temp (surface temp of the inductor) reaches the 80-90's these are only rated for 25-30A to maintain their expected lifespan.
The fact some folks run them at these temps 24/7 and draw over 40A through them, its easy to see why the DCDC's would die ....

When vegas measured the temp of the inductor from the side, it measured about 55C , the webgui showed about just over 60C ... so there is a really small delta between the ambient temp & internal junction temp(webgui reading) of these DCDC's

Meaning, if ur webgui shows 90C area, the inductor is probably not far behind, most likely running in the low 80's ... which means nowhere near 40A should be pulled from the DCDC at that point.

What would be the safest Maximum DCDC temp setting on advance page of your mod regardless of the ambient temp? I currently set it at 90 and all dies run at 325, should I lower it?




Ultimately its up to the user and their preferences of how long they want the machine to potentially last.
Its hard to answer ur question definitively due to so many environment variables & operating conditions between cubes.
What everyone needs is a laser temp reader to take temperature checks of the inductor on the DCDC modules while its hashing. If its true that the inductor is generally within 10C of the webgui stat then a SAFE MAX temp @ 40A is... between 70 & 75C, so webgui stat should no higher than 80-85C.

Whats interesting is with more airflow these DCDC's are rated for more current safely at any given temp, even if the temp is the same vs less/no airflow.

For example, temp of inductor 80C @ no airflow is safe up to 34A.  80C @ 2-3m/s of airflow is safe up to 40A
At 100C inductor temp: 20A safe for no airflow, 30A safe for 3m/s of airflow

Another facet of max life from DCDC's is keeping them at their rated 40A max or lower. I know most of mine in the titan @ 325mhz are at 40-41A ... which I imagine aint bad, but I think around 43A ur starting to really push it. The actual Current limiting function of the DCDC's kicks in at 46A

This is the life expectancy of the DCDC's given everything is within spec:
MTBF at 90% confidence level = 11.52 Mh
407  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: October 19, 2015, 04:02:31 PM
BTW, heres an interesting tidbit for yall, I think why many titans "dies end up dieing permanently" are infact because the DCDC modules burn out. After looking over the tech sheet, its easy to see why. If the ambient temp (surface temp of the inductor) reaches the 80-90's these are only rated for 25-30A to maintain their expected lifespan.
The fact some folks run them at these temps 24/7 and draw over 40A through them, its easy to see why the DCDC's would die ....

When vegas measured the temp of the inductor from the side, it measured about 55C , the webgui showed about just over 60C ... so there is a really small delta between the ambient temp & internal junction temp(webgui reading) of these DCDC's

Meaning, if ur webgui shows 90C area, the inductor is probably not far behind, most likely running in the low 80's ... which means nowhere near 40A should be pulled from the DCDC at that point.
408  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: October 19, 2015, 12:26:17 AM
Just wanted to share my experience after watching the YouTube video, I went ahead and ordered copper heatsinks and GC-Extreme paste from amazon, they were delivered within a day. I cut the metal bar further to allow me to install individual heatsinks on all 8 DC-DC modules. BTW, I replaced the stock fans with Noctua earlier. What an improvement, this cube would never run over 281 MHz, now it's been running at 325 MHz for over 24 hours. I see DC-DC temp as high as 86 but never 90, as I set that as my max temp on GenTarkin's mod. Cutting the metal bar was a pain though specially for the front 4 DC-DC modules.

Do you have any stats on before / after temps of the DCDC's u modded the cooling for? At the same speeds?

I really want to see the results of the mod before / after, thats key to seeing if this is all pointless or not.
Also, I would really love to know if sinking the E piece rather than hacking it all apart is adaquate to cool down the VRMs or not. I cant imagine much heat getting through those thick thermal pads, but w/o actual numbers to compare ... its all fucking guesswork lol!

you can't sink the E piece, it's down as far as it will go. Take out the thermal pads & there is a 1/4 in gap.  I did find a 1/4 in copper heatsink that fits right in there and they do work better than the thermal pads, but not as good as the 1/2in heatsinks with epoxy which will drop the temp a good 10-15c

-- and don't forget to scrape off the sticker on top of vrms it'll work even better

You can definitely sink the E piece, throw some heatsinks from ebay on top of it.  That would dramatically increase the surface area of that E piece and probably cool the VRM's a lot better.

ohhhh, that's an idea, worth a try but I don't think those thermal pads conduct much heat up to the e plate, and U1-U4 usually need a lot of add'l cooling(when they need it), might work on U5-U8. Cutting e plate for U1-U4 isn't hard, only takes a couple min with a hacksaw, cutting it for U5-U8 looks like a real pain, but I never had to do it

Well, I had vegasguy take a temp measurement of the top of the E piece and side of the inductor on a VRM, they were within 5C of each other ... So, I think those thermal pads are transferring heat quite well. It may be worth a shot to add more surface area(sink the top) of the E piece. It would be like the easiest mod one could do, and if it works good... then great!

worth a try, let us know how it works out

I dont have a titan, not sure if vegasguy is up to it, will see haha!
409  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: October 18, 2015, 08:10:30 PM
Just wanted to share my experience after watching the YouTube video, I went ahead and ordered copper heatsinks and GC-Extreme paste from amazon, they were delivered within a day. I cut the metal bar further to allow me to install individual heatsinks on all 8 DC-DC modules. BTW, I replaced the stock fans with Noctua earlier. What an improvement, this cube would never run over 281 MHz, now it's been running at 325 MHz for over 24 hours. I see DC-DC temp as high as 86 but never 90, as I set that as my max temp on GenTarkin's mod. Cutting the metal bar was a pain though specially for the front 4 DC-DC modules.

Do you have any stats on before / after temps of the DCDC's u modded the cooling for? At the same speeds?

I really want to see the results of the mod before / after, thats key to seeing if this is all pointless or not.
Also, I would really love to know if sinking the E piece rather than hacking it all apart is adaquate to cool down the VRMs or not. I cant imagine much heat getting through those thick thermal pads, but w/o actual numbers to compare ... its all fucking guesswork lol!

you can't sink the E piece, it's down as far as it will go. Take out the thermal pads & there is a 1/4 in gap.  I did find a 1/4 in copper heatsink that fits right in there and they do work better than the thermal pads, but not as good as the 1/2in heatsinks with epoxy which will drop the temp a good 10-15c

-- and don't forget to scrape off the sticker on top of vrms it'll work even better

You can definitely sink the E piece, throw some heatsinks from ebay on top of it.  That would dramatically increase the surface area of that E piece and probably cool the VRM's a lot better.

ohhhh, that's an idea, worth a try but I don't think those thermal pads conduct much heat up to the e plate, and U1-U4 usually need a lot of add'l cooling(when they need it), might work on U5-U8. Cutting e plate for U1-U4 isn't hard, only takes a couple min with a hacksaw, cutting it for U5-U8 looks like a real pain, but I never had to do it

Well, I had vegasguy take a temp measurement of the top of the E piece and side of the inductor on a VRM, they were within 5C of each other ... So, I think those thermal pads are transferring heat quite well. It may be worth a shot to add more surface area(sink the top) of the E piece. It would be like the easiest mod one could do, and if it works good... then great!
410  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: October 18, 2015, 07:32:26 PM
Just wanted to share my experience after watching the YouTube video, I went ahead and ordered copper heatsinks and GC-Extreme paste from amazon, they were delivered within a day. I cut the metal bar further to allow me to install individual heatsinks on all 8 DC-DC modules. BTW, I replaced the stock fans with Noctua earlier. What an improvement, this cube would never run over 281 MHz, now it's been running at 325 MHz for over 24 hours. I see DC-DC temp as high as 86 but never 90, as I set that as my max temp on GenTarkin's mod. Cutting the metal bar was a pain though specially for the front 4 DC-DC modules.

Do you have any stats on before / after temps of the DCDC's u modded the cooling for? At the same speeds?

I really want to see the results of the mod before / after, thats key to seeing if this is all pointless or not.
Also, I would really love to know if sinking the E piece rather than hacking it all apart is adaquate to cool down the VRMs or not. I cant imagine much heat getting through those thick thermal pads, but w/o actual numbers to compare ... its all fucking guesswork lol!

you can't sink the E piece, it's down as far as it will go. Take out the thermal pads & there is a 1/4 in gap.  I did find a 1/4 in copper heatsink that fits right in there and they do work better than the thermal pads, but not as good as the 1/2in heatsinks with epoxy which will drop the temp a good 10-15c

-- and don't forget to scrape off the sticker on top of vrms it'll work even better

You can definitely sink the E piece, throw some heatsinks from ebay on top of it.  That would dramatically increase the surface area of that E piece and probably cool the VRM's a lot better.
411  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: October 18, 2015, 06:26:37 PM
Just wanted to share my experience after watching the YouTube video, I went ahead and ordered copper heatsinks and GC-Extreme paste from amazon, they were delivered within a day. I cut the metal bar further to allow me to install individual heatsinks on all 8 DC-DC modules. BTW, I replaced the stock fans with Noctua earlier. What an improvement, this cube would never run over 281 MHz, now it's been running at 325 MHz for over 24 hours. I see DC-DC temp as high as 86 but never 90, as I set that as my max temp on GenTarkin's mod. Cutting the metal bar was a pain though specially for the front 4 DC-DC modules.

Do you have any stats on before / after temps of the DCDC's u modded the cooling for? At the same speeds?

I really want to see the results of the mod before / after, thats key to seeing if this is all pointless or not.
Also, I would really love to know if sinking the E piece rather than hacking it all apart is adaquate to cool down the VRMs or not. I cant imagine much heat getting through those thick thermal pads, but w/o actual numbers to compare ... its all fucking guesswork lol!
412  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: October 18, 2015, 08:58:42 AM
hah! yeahp, I know how ya feel! There is literally no hardware Im interested in anymore at this point. Its all a fucking ripoff right now. The reward/risk ratio just aint favorable enough anymore.
It will be if the price ever returns astronomically high. But thats going to take a lifetime at this point LOL!
The titan was the last piece of hardware I bought. Glad I did cuz I learned a lot coding to improve it, so its been one hell of a fun project, no other miner has given me such opportunity. But, beyond Titan, theres really nothing left LOL!

Oh ... how I miss the GPU days! =(
When mining was actually fair and fun and decentralized.

On a side note I posted this a bit further back. The below video shows a guy tearing apart a Titan cube. It is all in Swedish but I get the gist of it.

Except for the fact of learning my cubes are 'filthy' after watching this video by peaking inside and probably I SHOULD ASAP use the Air Compressor
and blow out 11 1/2 months of dust in them (in basement ..cooling in summer as a big shuttle fan and windows open....my pics here if you want to see setup
lostgonzo.imgur.com)

Would it make any sense for me to put new paste on the cubes as seen in the video after I dust them out (probably would do the heatsink mod too as they are cute or
maybe I really should replace the paste...the Titans have been running 24/7 for 11 1/2 months. Maybe this stuff dries out or something?

Or would that likely NOT make any difference on my 2 cubes with 1 dead die each? Thermal paste just helps heat...the dies I have set to OFF would likely not
benefit from this at all anyway......

Newbie other issue....if I could or being a newbie 'likely too" use too much thermal paste or muck it up in many different
newbie ways ...on your advice ... I may just limit myself to dusting them out...

Then again it don't look TOO hard even from my limited perspective ...newbie that I am on such electronic mods

here is the video

https://www.youtube.com/watch?v=O-RBI4am-wY

One last point ....as I watch the above video ..I can see where taking off the 2 ends on the heat sink to get access to the ends for individual heat sinks, but why did he
not just also prune the front of the large standard plate heatsink also and put copper individual heatsinks on all of them?

Seems to me he still had enough of the large standard heatsink plate to connect the fan/cooler back down with the
thermal paste on the Titan Cube and just put individual heatsinks on all the components. (whole thing still looks newbie scary to me)

Vegas if you are on .....you can jump on this too on what you think of the process on the above video..you probably have better ideas anyway Smiley

Anyway appreciate the advice. I SHOULD probably refrain myself for 20 days till warranty wears out. Original Titan will be 1 year on Nov 6rh 2015.
The 2nd used Titan I got is also a Nov 2014 unit.  Then after that point in time I can drag the HACKSAW wave it at the
Titans and make evil laugh sounds at them...heh......it will be very very therapeutic indeed! Again should you think I should bother with the mods he does.

Again thanks for any advice.

That was a good video, Ive been wondering how the inside of the titan was put together =P ... I dont have one physically, mines hosted(yes all the coding Ive done has been remote) LOL!
He put WAY TOO MUCH paste back on the ASIC, it will be oozing out the sides if it seats properly. I prefer to have a much thinner layer when I apply paste. Hell, I dont even spread it out, I just put a tiny bead in the middle, enough pressure should spread it out evenly as needed. Thats how arctic silver has always recommended application of their products.

I guess getting ambient temperatures of measuring points of the DCDC's are pointless now, it was something I askd vegasguy to check on while it was mining, but I didnt realize they had a "heatsink" on top of them for cooling =P
Yeah, I would like to see the temperature deltas between the banks he applied the copper heatsink on vs the ones he just left w/ the alum "heatsink" ... if the temps are anywhere near close then individually sinking the DCDC's is pointless. But, I know vegas has done a ton of work on tweaking the cooling on these things so Im interested to see what hes got goin on =P
Heck if that metal plate gets really freaking hot to the touch, that means the pads are doing a great job of transferring the heat to that plate from the DCDC's ... which means if u put heatsinks on the plate, even that would help cool those DCDC's better.
Hes still making the video lol!
413  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: October 18, 2015, 07:21:24 AM
hah! yeahp, I know how ya feel! There is literally no hardware Im interested in anymore at this point. Its all a fucking ripoff right now. The reward/risk ratio just aint favorable enough anymore.
It will be if the price ever returns astronomically high. But thats going to take a lifetime at this point LOL!
The titan was the last piece of hardware I bought. Glad I did cuz I learned a lot coding to improve it, so its been one hell of a fun project, no other miner has given me such opportunity. But, beyond Titan, theres really nothing left LOL!

Oh ... how I miss the GPU days! =(
When mining was actually fair and fun and decentralized.
414  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: October 18, 2015, 04:35:01 AM
Its the name of the game man! You have people willing to line up and shell out big bucks for shitty products ... any company will take advantage of that and lead their customers to the slaughter. Just look at apple.

The sheep are just even more retarded in crypto world cuz everyone will sacrifice everything to get more hash.
415  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: October 17, 2015, 10:51:39 PM
Awesome work, Tarkin!  Grin

Were you also able to correct the incorrect power reported for each cube?
As posted above: PER DCDC its doing this calculation: P * 1.15 + 5    (Measured power , 85% eff, add 5w for DCDC power dissipation)

It will  add all 8 of the DCDC's power as guestimated by above formula to show the cube consumption.

Thats the new cube formula, so its still an estimate, but its a lot closer to actual cube power consumption.
416  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: October 17, 2015, 09:41:05 PM
Ok, well I just finished up coding it all, now theres an additional section in the SYSTEM page that allows you to specify PSU effeciency, ranges from 50-100%
It will update the % on the advanced page whenever its changed.
It defaults to 85% if not specified prior(ie: before upgrading to new version)

These updates will be in next release =)

417  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: October 17, 2015, 09:39:37 PM
Yep. Shame that KNC didn't spend an extra $10 per cube to put the 50A VRMs and a second PCI-e connector.  Undecided

Just measured the controller for ya. It's using 2.25w on the 5V rail, and nothing on the 12V rail. That's with 5 cubes connected and the LCD screen. I'm surprised by how low that is!

WTF?! thats insanely low ROFL! thats 2.25W or 2.25A? LOL =P

Yeah, really really low. Guess the CPU isn't getting much of a work out!

That's 0.45A * 5V = 2.25W  Grin

I wonder where the scryp midstate n crap is calculated ... on the controller board? if so then that power usage will spike up a tad when a new block is found or a work restart.
418  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: October 17, 2015, 08:34:33 PM
Yep. Shame that KNC didn't spend an extra $10 per cube to put the 50A VRMs and a second PCI-e connector.  Undecided

Just measured the controller for ya. It's using 2.25w on the 5V rail, and nothing on the 12V rail. That's with 5 cubes connected and the LCD screen. I'm surprised by how low that is!

WTF?! thats insanely low ROFL! thats 2.25W or 2.25A? LOL =P
419  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: October 17, 2015, 08:11:18 PM
Here ya go, Tarkin:



I can't get a reading on the 5th cube for now as it's temporarily running on a Seasonic ATX PSU. I can't get my clamp on the 12V wires since it's sleeved.

Would you also like a reading of a cube running 325MHz at default voltage, (-0.0366v) or is that unnecessary?

Looks like my calcs are spot on!
Except for that first cube, Im gonna assume the increase in power on that cube is because of the DCDC's running in the 42+ AMP range... man effeciency must PLUMMET drastically beyond the 41 AMP range!

I must say, Its fucking crazy that *everyones* PCIe connectors arent melting ALL THE TIME! Thats 27.5A ... thats way above the 23A rating, its even above the good ol "10% specs deviation rule for electronics" which in this case is 25.3A
~ only if we could make 14V go through the PCIe connectors instead =P ... would take a decent amount of load off them and probably make the DCDC's work a tad more effeciently. LOL!

Fun times!

Any way you can measure the power leads going to the controller board from PSU?(if thats how its powered)
420  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: October 17, 2015, 06:35:58 PM
Ok, here is my updated formula:
PER DCDC its doing this calculation: P * 1.15 + 5    (Measured power , 85% eff, add 5w for DCDC power dissipation)
Which comes out to about 330w per cube. (on my titan)

Then for wall watts its:

Cube power * 1.15 + 5 + 25 (Total cube power as per each DCDC added together from above equation, 85% eff PSU, add 5w for pi, add 25w for controller board)

Gives my total wall watts of 1530w, which is EXTREMELY close to my measured 1515W at wall.

I dont really know how much the controller board consumes, so thats a pure guess LOL!

If I run the SAME guestimate through ur 5 cubes and ur 94% PSU, it comes out at ..... 1779W!! Which is also very close.

What ya think?

The only thing I cannot account for is all the different effeciency levels of the DCDC, so if someone is running the DCDC at like 90% eff, my calcs would still assume 85% =P

In regards to custom effeciency setting, I was thinking, for sake of cleanliness I would just add it as another setting under the SYSTEM tab, thoughts?
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