Temperature rise at miner outlet is variable based upon multiple variables, inlet temp, flow, overclocking, cooling capacity, etc.

Max discharge shouldn’t exceed 65-70 deg c as to mimic air cooling chip temps.  Personally I wouldn’t want to exceed 50-55 personally.  The discharge temp should be adjusted to make sure miner chip temps don’t exceed 60-65.  I plan to experiment to see what the watt/TH is with cooler temps.

I am in the process of building my hydro cooling setup.  I have understand radiant heat in my shop where Bitcoin miners are housed, will use heat from miners to either heat slab of shop, send heat to my house, or send outdoors to a radiator.  I am in Ohio, USA where heating seasons are longer and such a setup makes sense.  My current deployment will provide more than enough heat to heat both buildings in the coldest of winters and have plans to expand once conversion to water cooling is complete.  It is a no brainer for home use.  A little costly, but a slam dunk on efficiency.

No need to analyze adapters anymore…. Maybe someone should analyze how I2R losses work and how they increase as resistance/temperatures rise.  Loose gets hot, hot gets more loose, a self-fulfilling prophecy to a fire.

https://wccftech.com/native-atx-3-0-16-pin-cable-melts-too-when-connected-to-an-nvidia-geforce-rtx-4090/amp/

Your right, no need to speculate that Nvidia has provided total shit wiring design for their AIB’s to use…. Glad we only listen such experts instead of us plebs here using common sense and experience.

“ The overall build quality of the included adapter for the GeForce RTX 4090, which is distributed by NVIDIA itself, is extremely poor and the internal construction should never have been approved like this. ”

I’ve melted 6 and 8 pin pcie due to poor cable construction/pins while mining.  Countless breakout boards melting also.  Eventually settled with no more than 75w per 8 pin cable and many more quality cables to stop it.  Sellers literally sell non compliant cables on the daily.  Then EVGA started giving away a right angle adapter with high spec 1080-1080ti’s due to melting twin 8 pin plugs.  They added capacitors inside this adapter to help with surge currents/stress on the pins.  I got lucky sue to having smoke detectors hovering over all miners.  Others not so lucky.

Fast forward to this shit show with stupid tdp’s and custom connectors.  People are literally bending the cables at the connectors 90 degrees to stuff it into cases.  Some people have broken their glass sides due to the pressures exerted on the cables/glass.  People flocking to these 4000’s due to the long drought will be granted some smoking  GPU performance, literally.  The pins cannot sustain such punishment and needs to change.  The whole pcie power standard need rethought IMO.  The person who doubled the 6 to 8 pin power maximum by adding 2 additional ground wires needs beaten.  Now this 4000 series stuff being the wave of the future, no thanks.

After reading this I believe your bios mods are the reason.  Please use overdriventool and post a picture of a card once you start the program.

Crap memory clocks do the same to my rigs.  Also if someone clocked defaults high, your afterburner clocks got reset and now default clocks are crap and not stable.

If You mod'd your bios flash it back to stock.  I suspect someone was playing with bios flashing and this happened.  There is part of the story missing here...

Correct, 2 cards max at 1070 or ti per rail.  1 x 1070ti = 200 to 230 watts at 100% with peaks to 290 watt for less than 50ms.  2 of these per rail max, personally I would do 1 per rail.  16 awg cables = 300 watts per cable in my opinion, or 1 card.

OP, do you have corsair PSU HX1200?  Flip the damn switch from multiple rails to single rails as a test.  See how the rails work?  This particular bad ass PSU can switch between the 2.  I would choose multiple rails with proper loading.  As a test flip the switch if you have this PSU to prove the wiring load is unbalanced on multiple rails.  PS it come default to multiple

Corsair HX1200 DC Output Ratings in Single +12V Rail Mode
DC output   +3.3V   +5V      +12V   -12V   +5VSB
Max Load   30A            30A.  100A   0.8A   3.5A
Maximum Combined Wattage   150W   1200W   9.6W   17.5W
Total Power: 1200W

Corsair HX1200 DC Output Ratings in Multiple +12V Rail Mode
DC Output   +3.3V   +5V   +12V1   +12V2   +12V3   +12V4   +12V5   +12V6   +12V7   +12V8   -12V   +5VSB
Max Load   30A         30A   40A            40A   40A.     40A    40A    40A    40A    40A    0.8A   3A
Maximum Combined   150W   1200W   9.6W   15W
Total Power   1200W

You do realize some PSU's have multiple 12v rails right?  A single PSU can have 2-4 12v rails.  I said rails, not PSU.  Please read.  I am not a mind reader and have no clue what PSU model he has.  I made the statement just in case.  It needs to be looked at. 

Card 1 riser - rail 1, card 1 gpu - rail 1

NOT Card 1 riser - rail 1, card 1 gpu - rail 3 or some other combo.

Each 12v rail has regulation.  Each card is pulling on the rail.  Don't be a dumb ass and put 4 cards on rail 1 and 4 risers on rail 2.  Keep them together if possible.   Overloaded rails cause regulation issues is my point.

GPU's pull a lot of power when mining begins.  It can cause the 12v rail to pull down then pump up...imagine a ball bouncing. This is very true when the tdp hasn't been turned down.

In windows 10 do the following as a starting point...
1. Increase page file size to at least 16GB
2. Change power profile to high performance
3. Set afterburner tdp to 65-70%, default clocks, once stable then +100 core, +500 mem as a starting point after crashes are stopped
4. Report back the cpu usage when mining 2 cards then all cards, +cpu specs please, what is it?
5. Pcie power cable from PS to cards and riser should be on the same 12v rail.  If you use 12v rail 1 for all risers then other rails for cards it can possibly create problems.  Not sure if your PS has a single or multiple rails.
6. Bad power wiring...never exceed 300w per pcie cable is my rule of thumb.  I typically use a single pcie power cable for each riser + gpu using a splitter.  I use server PSU's so all wiring is pcie cables.  Please ensure your loads are balanced and proper, not some BS like all risers on one cable.

My thoughts of why the crash...
1. If you didn't turn down the tdp in afterburner you might be causing issues on the PS.  Did you split the loads across each 12v rail?
2. Virtual memory/page file size does help and is necessary
3. If the cpu is a terd it will certainly choke throughput, but shouldn't crash
4. Possible bad pcie power plug.  I had a burnt plug on one of my 13 gpu rigs.  Slightly burnt and melted causing all kinds of havoc.

I suspect tdp + page file combination causing issues.  If your power wiring is jacked, another real possibility.

Are your pcie x1 cards touching each other at the mb? Slide a piece of paper between them for a test.

A photo of the rig wiring  would help.

Not sure if being rude is a natural thing for you but your pretty good at it.  Since you know it all please enlighten us with something other than criticism.  I will take my dumb ass to bed, I've learned enough from you tonight.  You simply are missing the point, offer nothing but criticism, and honestly seem to exist here to piss off people.  Do you ever notice how the loudest people talking in a room know the least?  Please enjoy responding to your own post, goodnight.

This thread is a repository of the findings of all parties.  My only contribution to this thread was to simply keep it on task with research.  I enjoy learning what is happening and take offense to detours of the original intent.  Such negativity only discourages and harms progress.  We're not curing cancer here but I do see merit in such an investment to walk a different path for research.  For this I applaud the brave few, even if it is not cheap to run, hashes less, or simply never ROI's.  I do feel that some people here on the forum are smarter than some folks over at AMD and might find some interesting things out.  Other forum members in other post reverse engineer firmware from asic companies all day long and know more about the shit than the oem.  I am just waiting for these types of breakthroughs to happen here in this post.  If this forum could combine the IQ's of many some serious stuff would be solved.

I would gladly pay for something that made Vegas mine 2X more for the same power.  I am hoping that is where this thread goes, let alone potentially for free as implied in the title.

Can the BS stop so the men can get back to work?  This thread is about logging the progress of Vega development.  Page 1 says he doesn't give a rats ass about profits or efficiencies.  This is pure R&D.

I've read all 10 pages of this thread and you jump in today with multiple post stating the OP is a liar, is stupid, and you wish to see his P&L on his investment.  With such intellect and wisdom please add some useful information regarding vega mining development of driver tweaking and other optimizations.

Some of us here are reading, wish to learn and respect the hard work of others.  If you wish to pick fights about +/-% of hash, profits, or ROI please go elsewhere.  This is research in the making and is a work in progress.

How about our own forum's marketplace?  Plenty for sale if your willing to pay.

Goods arrived safe and sound.  Seller demonstrated the gold standard of how to do business per our forum policies.  All goods we're packaged very well, shipment was insured and a signature confirmation was required.  All goods we're in better condition than expected/advertised.  Overall one of the best transactions I've had lately.

I am not racist, I don't hate you our your country, I simply obey laws that put my business, my family, and myself in jeopardy.  Any normal person should understand that.

Please educate yourselves...

https://www.bis.doc.gov/index.php/policy-guidance/country-guidance/sanctioned-destinations/iran


What can you not do with Iran?

As a U.S. person, unless you have a specific license from OFAC, you cannot, among other things:

Sell most goods to Iran from the U.S. or from any third country jurisdiction, like Germany or Dubai;

Facilitate trade with Iran, such as arrange for a shipment of Chinese goods from China to Iran, provide credit to enable such a transaction, work for a Korean company on most deals related to Iran, or work in a Dubai company on reexport transactions with Iran;

Invest in Iran, such as building an apartment building, opening a factory, running a factory, etc. (bear in mind one Iranian American was fined $30,000 in late 2010 for a “non-egregious” investment in a family catering business);
Run a business in Iran such as a bookstore, or an engineering firm;

Work in Iran or for Iranian companies, whether you are sitting in your house in the United States and working remotely for a company in Iran, or whether you move to Iran and work for a company there, or even work for an Iranian company in London, Istanbul, or Dubai;

Deposit and maintain money in banks in Iran, even in non-sanctioned private banks; and
Import most goods from Iran, even through a third country like Australia or India.



Any questions?

I work for a defense contractor and am well versed in export compliance.  You cannot ship tissues to Iran to wipe your tears without end user compliance paperwork, please educate yourself.  Your other post are looking for goods from other countries due to this, please don't play dumb.

Pm sent.

I'm in central ohio, so yeah it would be easy.  What was the cpu model?  It was never stated and was simply curious.  A better price for no shipping/dissasembly bs?  To be clear I will boot it up in my car to see a working bios so no dissasembly required.  Hell I might throw a couple cards in and mine on the way home...lol.

Shaun,

I don't care if you sell your goods to me but selling items to Iran from the USA is a slippery slope...I would do your research around end user compliance and export compliance.

I will purchase the entire lot except the gpu's, send me your price. Sell the rest on ebay.

Give me a price for all goods EXCEPT the GPU's.  Shipping to 43068, payment to be paypal, turn your "Allow newbies to send you PMs" on and send it via pm.

Wayne, already asked, already answered, not going to happen.  This is a demo and showing us this detail compromises their design and phillips agreement with them.