My second ZEC + XMR+ ETH thread builds info links thoughts and photos.

[philipma1957]

Phil  did you ever see these?


http://www.newegg.com/Product/Product.aspx?Item=9SIA27C3GN8656

They have a resistor  and plug inline for 3 pin fans.  5 for 6 bucks.  So 2 orders for 12 dollars  would be enough for all 9 fans in the PandaMiner.

I like them  not sure is they can carry a 0.80 amp max load.

For 12 bucks I will order them now.  They could make the miner much quieter.

When my pandaminer does zec  the heatsinks are only about 40c

[1715397647]

1715397647

[1715397647]

1715397647

[GabryRox]

So, i didn't end up pulling the trigger on those 2 x 550w PSUs.  It was going to cost $140 for 1100w vs the 1200w single unit, which yes, now costs $180 but has been as low as $160 recently and $120 a little longer out.  I just didn't want to hassle with a 2-PSU setup for what would probably be a nominal savings.

So... still on the lookout for a good deal on a 1200w unit, I found this Rosewill Capstone G Series at NewEgg for $100 after $10 rebate.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817182361&cm_re=rosewill_1200w-_-17-182-361-_-Product

This at least appears to be very similar to the Quark Plat Series, with the exception of course of the 2% difference in power efficiency, but was wondering if anyone on this thread had used this series (in any wattage).  In addition, the Capstone seems to be semi-modular, but with only the 24-pin connector permanently connected, so probably no issue there. Otherwise, seems to have the same # of cables/connectors as the Quark.  This still puts me 1 molex cable short, but hopefully can find a work-around for that.

If i do my math right, the incremental electricity cost for Gold vs Plat is only $2/month, so ROI wise, this would be a no-brainer vs the $180 (or even $160) Quark version.  But, wondering if there are any other differences that I am not catching.

IMHO, it's not worth "saving pennies" on PSUs, because your entire investment, ie. mobo, gpus, ram, cpu, etc., could be harmed in many ways due to a sub-standard PSU. Be careful on so called Platinum PSU selling at "attractive" pricing -- there are too many scams out there.

Standardizing on a good PSU brand will save you power bill, stability of rigs, consolidated warranty to some extent, etc, over time.

The more expensive PSUs, esp Platinum ones from EVGA, Corsair, Rosewill are well above 100 for Gold or 200 bucks for Platinums, for a reason - its simply using quality & better components resulting good performance and efficient power consumption for the rigs. I standardized on EVGAs because of the build and reputation, and also the 10-year warranty.

To save on overall rig costs, find a reliable and cost-efficient supplier of RAM and GPUs instead, because these items are bought in multiple quantities therefore the savings realised are much meaningful.

To go even further, study the supply chain for the RAMs and GPUs, and buy direct from distributor if you are buying in bulk, rather than buying from Newegg or Amazon.

Thanks Citronick, I appreciate your insight on this issue.  I understand and agree with what you said about sticking with the reputable brands. In fact, my 2 mining PSUs are both Rosewill Quark (1kw and 1.2kw), both of which I like very much, hence looking at another Rosewill for rig #3, just Gold vs Platinum. By all appearances on NewEgg, this Capstone appeared to be inline quality wise with the Quarks as both had 4-star reviews. However, the difference became evident between the 2 in reading the in-depth reviews that Phil linked to.  If it was just the 2% difference between Gold and Plat, I would buy that Gold right now, but the build quality appears to be noticeably worse, even though from same brand, which is why I opted not to buy it.  I will probably just wait until that 1200w Quark drops in price again and stick with that.

As to your comments about RAM and GPUs, I'm not sure it can help much in my specific case. Firstly, I am not in the market for multiple sticks of RAM (at least not past the 2 i will need for rig #3), so there would be no possibility for volume discounts there.  However, I do have a question about quantity of RAM needed for mining.  Both of my rigs so far have 16GB of RAM (2x8GB).  Is this overkill?  Could I get by with 2x4GB instead?  I would primarily be GPU mining ETH/XMR/ZEC and CPU mining XMR, so maybe this is an area I can save in?

As for bulk discounts on GPUs, I doubt that 6 would qualify me for this. I'm under the impression that I would need to be more in the 15-20 range for a distributor to even talk to me, and that's not going to happen any time soon. I think i will be good at 3 rigs for now, unless of course crypto prices go crazily high in the near future.  Of course, I said the same thing after planing rig #2, so who knows 

[m1n1ngP4d4w4n]

So, i didn't end up pulling the trigger on those 2 x 550w PSUs.  It was going to cost $140 for 1100w vs the 1200w single unit, which yes, now costs $180 but has been as low as $160 recently and $120 a little longer out.  I just didn't want to hassle with a 2-PSU setup for what would probably be a nominal savings.

So... still on the lookout for a good deal on a 1200w unit, I found this Rosewill Capstone G Series at NewEgg for $100 after $10 rebate.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817182361&cm_re=rosewill_1200w-_-17-182-361-_-Product

This at least appears to be very similar to the Quark Plat Series, with the exception of course of the 2% difference in power efficiency, but was wondering if anyone on this thread had used this series (in any wattage).  In addition, the Capstone seems to be semi-modular, but with only the 24-pin connector permanently connected, so probably no issue there. Otherwise, seems to have the same # of cables/connectors as the Quark.  This still puts me 1 molex cable short, but hopefully can find a work-around for that.

If i do my math right, the incremental electricity cost for Gold vs Plat is only $2/month, so ROI wise, this would be a no-brainer vs the $180 (or even $160) Quark version.  But, wondering if there are any other differences that I am not catching.

IMHO, it's not worth "saving pennies" on PSUs, because your entire investment, ie. mobo, gpus, ram, cpu, etc., could be harmed in many ways due to a sub-standard PSU. Be careful on so called Platinum PSU selling at "attractive" pricing -- there are too many scams out there.

Standardizing on a good PSU brand will save you power bill, stability of rigs, consolidated warranty to some extent, etc, over time.

The more expensive PSUs, esp Platinum ones from EVGA, Corsair, Rosewill are well above 100 for Gold or 200 bucks for Platinums, for a reason - its simply using quality & better components resulting good performance and efficient power consumption for the rigs. I standardized on EVGAs because of the build and reputation, and also the 10-year warranty.

To save on overall rig costs, find a reliable and cost-efficient supplier of RAM and GPUs instead, because these items are bought in multiple quantities therefore the savings realised are much meaningful.

To go even further, study the supply chain for the RAMs and GPUs, and buy direct from distributor if you are buying in bulk, rather than buying from Newegg or Amazon.

Thanks Citronick, I appreciate your insight on this issue.  I understand and agree with what you said about sticking with the reputable brands. In fact, my 2 mining PSUs are both Rosewill Quark (1kw and 1.2kw), both of which I like very much, hence looking at another Rosewill for rig #3, just Gold vs Platinum. By all appearances on NewEgg, this Capstone appeared to be inline quality wise with the Quarks as both had 4-star reviews. However, the difference became evident between the 2 in reading the in-depth reviews that Phil linked to.  If it was just the 2% difference between Gold and Plat, I would buy that Gold right now, but the build quality appears to be noticeably worse, even though from same brand, which is why I opted not to buy it.  I will probably just wait until that 1200w Quark drops in price again and stick with that.

As to your comments about RAM and GPUs, I'm not sure it can help much in my specific case. Firstly, I am not in the market for multiple sticks of RAM (at least not past the 2 i will need for rig #3), so there would be no possibility for volume discounts there.  However, I do have a question about quantity of RAM needed for mining.  Both of my rigs so far have 16GB of RAM (2x8GB).  Is this overkill?  Could I get by with 2x4GB instead?  I would primarily be GPU mining ETH/XMR/ZEC and CPU mining XMR, so maybe this is an area I can save in?

As for bulk discounts on GPUs, I doubt that 6 would qualify me for this. I'm under the impression that I would need to be more in the 15-20 range for a distributor to even talk to me, and that's not going to happen any time soon. I think i will be good at 3 rigs for now, unless of course crypto prices go crazily high in the near future.  Of course, I said the same thing after planing rig #2, so who knows  

Totally agree PSU is the one thing you really need to get a good one

also for memory yeah it's really overkill, 4GB is enough for a mining rig, 8 is already pushing it, 16 is total overkill. I have several w10 zcash mining rig with 6 gpus, and with 4GB memory stick it use only ~54% of available memory.

[GabryRox]

I fucked up with a riser I got it in the mail and did not remember where I purchased it.  it worked great It had a six pin pcie jack for power. not those shit   4 pin power jacks.

I used a few weeks and rearranged all my gear for the panda miner  So I sold a psu to generalt and he asked me if I had a riser So I tossed it in and never did the review of duh moron me.

I will post more on it  but I am asking generalt does it still work well?

That USB riser is still working perfectly for me thank you very much.  Before putting that riser in I was getting constant system crashes and reboots with the old riser.  The old riser had a molex connector on it and the molex to sata adapter melted a little it.  It was not noticeable until I removed it from the system and you could see some of the melted bits.  Using the 6 pin PCIe directly so far I've had no problems nor do I expect any power problems with this riser.  Thanks again Phil!

https://bitcointalk.org/index.php?topic=1744064.0

http://www.itopshop.net/pcie-1x-to-16x-pcie-riser-with-6pin-power-connector-version-6-p-303.html

http://www.ebay.com/itm/272456808280?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1558.l2649

This is quite interesting!  So, to make sure I understand correctly... these risers are powered by converting the sata plugs coming from the PSU to 6-pin PCIe-type power (instead of either sata to molex or molex to molex)?

Is this a legitimately better way to go than the sata to molex type?  I had always avoided that on my GPUs since I heard several people saying that this caused problems due to wrong voltage pull or something like that. So, I had always gone molex to molex, but of course, that is also why I am always short on molex connectors since I would need 3 x 2 for GPUs and 1 x 2 to power my BTC pro r2 Mobo.  Needing 8 molex on 4 cords sucks when even 1200W Plat PSU only comes with 2 x 2.

So, if I understand this correctly, using these 6-pin adapters, I could make use of the extra sata cables/connectors for 6 GPUs... meaning I would really only need 2 molex to power my mobo?  If true, is there still a limit of 2 GPUs per string?  Or could I reasonably put 3 per string?

[generalt]

This is quite interesting!  So, to make sure I understand correctly... these risers are powered by converting the sata plugs coming from the PSU to 6-pin PCIe-type power (instead of either sata to molex or molex to molex)?

Is this a legitimately better way to go than the sata to molex type?  I had always avoided that on my GPUs since I heard several people saying that this caused problems due to wrong voltage pull or something like that. So, I had always gone molex to molex, but of course, that is also why I am always short on molex connectors since I would need 3 x 2 for GPUs and 1 x 2 to power my BTC pro r2 Mobo.  Needing 8 molex on 4 cords sucks when even 1200W Plat PSU only comes with 2 x 2.

So, if I understand this correctly, using these 6-pin adapters, I could make use of the extra sata cables/connectors for 6 GPUs... meaning I would really only need 2 molex to power my mobo?  If true, is there still a limit of 2 GPUs per string?  Or could I reasonably put 3 per string?

I do not use the SATA to 6 pin PCIe adapter.  I just plug a 6 pin PCIe cable in from my PSU directly into the USB riser.  I believe that is the best way to power them.  I did not get the SATA to PCIe adapter, but from the pictures the gauge of the wires look like they are of a heavier gauge than the regular SATA or Molex ones but I'm not 100% sure on that.

[GabryRox]

This is quite interesting!  So, to make sure I understand correctly... these risers are powered by converting the sata plugs coming from the PSU to 6-pin PCIe-type power (instead of either sata to molex or molex to molex)?

Is this a legitimately better way to go than the sata to molex type?  I had always avoided that on my GPUs since I heard several people saying that this caused problems due to wrong voltage pull or something like that. So, I had always gone molex to molex, but of course, that is also why I am always short on molex connectors since I would need 3 x 2 for GPUs and 1 x 2 to power my BTC pro r2 Mobo.  Needing 8 molex on 4 cords sucks when even 1200W Plat PSU only comes with 2 x 2.

So, if I understand this correctly, using these 6-pin adapters, I could make use of the extra sata cables/connectors for 6 GPUs... meaning I would really only need 2 molex to power my mobo?  If true, is there still a limit of 2 GPUs per string?  Or could I reasonably put 3 per string?

I do not use the SATA to 6 pin PCIe adapter.  I just plug a 6 pin PCIe cable in from my PSU directly into the USB riser.  I believe that is the best way to power them.  I did not get the SATA to PCIe adapter, but from the pictures the gauge of the wires look like they are of a heavier gauge than the regular SATA or Molex ones but I'm not 100% sure on that.

hmmm... but how does this provide enough & even power to the GPUs?  Most of what I have read indicates that IN ADDITION to the riser power, the 6+2 pin connector coming from the PSU must be plugged directly into the GPU. Maybe I'm missing something but I thought there is supposed to be a balance between GPU power coming from the PCIe slot/riser and directly from the PSU via the 6+2 pin connector. Is this not correct?

[m1n1ngP4d4w4n]

This is quite interesting!  So, to make sure I understand correctly... these risers are powered by converting the sata plugs coming from the PSU to 6-pin PCIe-type power (instead of either sata to molex or molex to molex)?

Is this a legitimately better way to go than the sata to molex type?  I had always avoided that on my GPUs since I heard several people saying that this caused problems due to wrong voltage pull or something like that. So, I had always gone molex to molex, but of course, that is also why I am always short on molex connectors since I would need 3 x 2 for GPUs and 1 x 2 to power my BTC pro r2 Mobo.  Needing 8 molex on 4 cords sucks when even 1200W Plat PSU only comes with 2 x 2.

So, if I understand this correctly, using these 6-pin adapters, I could make use of the extra sata cables/connectors for 6 GPUs... meaning I would really only need 2 molex to power my mobo?  If true, is there still a limit of 2 GPUs per string?  Or could I reasonably put 3 per string?

I do not use the SATA to 6 pin PCIe adapter.  I just plug a 6 pin PCIe cable in from my PSU directly into the USB riser.  I believe that is the best way to power them.  I did not get the SATA to PCIe adapter, but from the pictures the gauge of the wires look like they are of a heavier gauge than the regular SATA or Molex ones but I'm not 100% sure on that.

hmmm... but how does this provide enough & even power to the GPUs?  Most of what I have read indicates that IN ADDITION to the riser power, the 6+2 pin connector coming from the PSU must be plugged directly into the GPU. Maybe I'm missing something but I thought there is supposed to be a balance between GPU power coming from the PCIe slot/riser and directly from the PSU via the 6+2 pin connector. Is this not correct?

Yes he's using a 6 pin power cable to power the riser AND a 8 or 6+2pins power cable to power the gpu. Most risers have molex or sata connector power input, but there is newest version that has a 6 pin connector directly hence bypassing the need of a sata to molex adapter to power the riser. You even have some motherboards that also has additionnal power connector reserved for the PCI-express slot to give them more power. Using GPU power supply + motherboard power supply + riser power supply you smooth out the load between different power lane of your PSU, smoothing the power output. so it's all good

[GabryRox]

This is quite interesting!  So, to make sure I understand correctly... these risers are powered by converting the sata plugs coming from the PSU to 6-pin PCIe-type power (instead of either sata to molex or molex to molex)?

Is this a legitimately better way to go than the sata to molex type?  I had always avoided that on my GPUs since I heard several people saying that this caused problems due to wrong voltage pull or something like that. So, I had always gone molex to molex, but of course, that is also why I am always short on molex connectors since I would need 3 x 2 for GPUs and 1 x 2 to power my BTC pro r2 Mobo.  Needing 8 molex on 4 cords sucks when even 1200W Plat PSU only comes with 2 x 2.

So, if I understand this correctly, using these 6-pin adapters, I could make use of the extra sata cables/connectors for 6 GPUs... meaning I would really only need 2 molex to power my mobo?  If true, is there still a limit of 2 GPUs per string?  Or could I reasonably put 3 per string?

I do not use the SATA to 6 pin PCIe adapter.  I just plug a 6 pin PCIe cable in from my PSU directly into the USB riser.  I believe that is the best way to power them.  I did not get the SATA to PCIe adapter, but from the pictures the gauge of the wires look like they are of a heavier gauge than the regular SATA or Molex ones but I'm not 100% sure on that.

hmmm... but how does this provide enough & even power to the GPUs?  Most of what I have read indicates that IN ADDITION to the riser power, the 6+2 pin connector coming from the PSU must be plugged directly into the GPU. Maybe I'm missing something but I thought there is supposed to be a balance between GPU power coming from the PCIe slot/riser and directly from the PSU via the 6+2 pin connector. Is this not correct?

Yes he's using a 6 pin power cable to power the riser AND a 8 or 6+2pins power cable to power the gpu. Most risers have molex or sata connector power input, but there is newest version that has a 6 pin connector directly hence bypassing the need of a sata to molex adapter to power the riser. You even have some motherboards that also has additionnal power connector reserved for the PCI-express slot to give them more power. Using GPU power supply + motherboard power supply + riser power supply you smooth out the load between different power lane of your PSU, smoothing the power output. so it's all good

Ahhhh!! thanks for clarifying that! I had mis-understood his post to mean that he was SOLELY using the 6-pin, but now I read it again and that is of course not the case.  That does seem like a much better way to do things but now I am wondering about being short on PCIe cables... but actually, I think I have at least 2 left over from my first 2 rigs so probably will work. Thanks again, I will order that 6-pack promptly.

[QuintLeo]

Phil  did you ever see these?


http://www.newegg.com/Product/Product.aspx?Item=9SIA27C3GN8656

They have a resistor  and plug inline for 3 pin fans.  5 for 6 bucks.  So 2 orders for 12 dollars  would be enough for all 9 fans in the PandaMiner.

I like them  not sure is they can carry a 0.80 amp max load.

For 12 bucks I will order them now.  They could make the miner much quieter.

When my pandaminer does zec  the heatsinks are only about 40c

 I think I'm reading that as they have 47 ohm resisters in line - which is gonna drop those Deltas to 3 volts or so *if* I'm correct and the fans won't turn at all a that low a voltage.
 Might be 4.7 ohm though - the listing is VERY unclear - which would be a fairly small voltage and speed drop but the resistor better be a lot bigger than it looks like (at LEAST a 2 watt and even that would probably be very marginal at best, 5 watt would be better for some safety from overload and overheat).

[philipma1957]

Phil  did you ever see these?


http://www.newegg.com/Product/Product.aspx?Item=9SIA27C3GN8656

They have a resistor  and plug inline for 3 pin fans.  5 for 6 bucks.  So 2 orders for 12 dollars  would be enough for all 9 fans in the PandaMiner.

I like them  not sure is they can carry a 0.80 amp max load.

For 12 bucks I will order them now.  They could make the miner much quieter.

When my pandaminer does zec  the heatsinks are only about 40c

 I think I'm reading that as they have 47 ohm resisters in line - which is gonna drop those Deltas to 3 volts or so *if* I'm correct and the fans won't turn at all a that low a voltage.
 Might be 4.7 ohm though - the listing is VERY unclear - which would be a fairly small voltage and speed drop but the resistor better be a lot bigger than it looks like (at LEAST a 2 watt and even that would probably be very marginal at best, 5 watt would be better for some safety from overload and overheat).

I can measure the ohms and put in a more ballsy resister.   I like that I get 10 pieces.   As for  what volts work on the fan  6-7 volts is minimum


here are lots of 4.7 ohm 2 watts


http://www.digikey.com/products/en/resistors/through-hole-resistors/53?

[AriesIV10]

Just to let ya know, Claymore said this yesterday for Zcash (ZEC)

"I will release new version with good speedup within 24 hours."

[GabryRox]

Just to let ya know, Claymore said this yesterday for Zcash (ZEC)

"I will release new version with good speedup within 24 hours."

Geeze lol! Why does he keep spending 95% of his time on ZEC when it has been well below both ETH & XMR in mining profitability for many weeks in a row now?  Yeah, I get that there is not much more room for improvement with ETH mining but XMR seems to have some room, esp for 470/480's, since those were not even out when he made his XMR GPU miner.  He did update it about a week ago but it was only to bring it up to date feature wise, with no speed increase.  I guess there are still more miners with only older gen cards that can really only mine ZEC that are keeping updates in demand, but the profitability simply isn't there for the 470/480 crowd.

Oh well, it could be worse... all 10 of my cryptocoin holdings could be down double-digit % today.  Of wait... they are... so, strike that.  Bad day to be in crypto. Hope it turns around soon. Really wish the government in China would shut their f'in mouths.

[citronick]

While busy with testing the Panda miner, a buddy of mine came down to visit to have a look at the Panda.

I needed his msata-to-USB3 converter card to burn a Linux image to replace the Win10-Ent OS in the Panda.



In return, I helped him build a 6x480 rig using a 4U case which I was also interested in before this Panda came by.

Not easy to manage this case, although shorter in length, GPUs are above the mobo, so it's quite tricky to get all the risers in position and troubleshoot.

A longer 2U case like AriesIV would have been better where you can access the GPUs and motherboard at the same time, for easy troubleshooting.

Anyways, its up and running now mining Claymore ZEC v10 on a SM-Linux thumbdrive. He asked me to babysit the rig for him until he prepares a place for it in his apartment.

[m1n1ngP4d4w4n]

Nice rig !

Care to share the rig case brand/model ? Also same for this AriesIV case (tried to look for it @google but didn't find it)

[QuintLeo]

Just to let ya know, Claymore said this yesterday for Zcash (ZEC)

"I will release new version with good speedup within 24 hours."

Geeze lol! Why does he keep spending 95% of his time on ZEC when it has been well below both ETH & XMR in mining profitability for many weeks in a row now?  Yeah, I get that there is not much more room for improvement with ETH mining but XMR seems to have some room, esp for 470/480's, since those were not even out when he made his XMR GPU miner.

 Per Wolf0, there is NOT much room if any for significant optimisation on XMR for the 470/480 series, the current miners are already well optimised.

 ZEC on the other hand still has quite a bit of room for optimisation it would appear.

[QuintLeo]

In return, I helped him build a 6x480 rig using a 4U case which I was also interested in before this Panda came by.

 That case pictured, *IF* it is rack mountable, appears to be an 8U case.
 It's not even CLOSE to being a 4U case.

 By specification, a 4U case cannot be more than 7" in height.

[m1n1ngP4d4w4n]

In return, I helped him build a 6x480 rig using a 4U case which I was also interested in before this Panda came by.

 That case pictured, *IF* it is rack mountable, appears to be an 8U case.
 It's not even CLOSE to being a 4U case.

 By specification, a 4U case cannot be more than 7" in height.

It indeed does appear to be 6U if fans behind are 120mm ones, that's maybe 300m height in all with case 4U is 18cm so yeah not a 4U (even if they were 80mm fans) so either a 6U (26.67cm) or 8U (35.56cm), still very interested in the case model

[citronick]

In return, I helped him build a 6x480 rig using a 4U case which I was also interested in before this Panda came by.

 That case pictured, *IF* it is rack mountable, appears to be an 8U case.
 It's not even CLOSE to being a 4U case.

 By specification, a 4U case cannot be more than 7" in height.

You are right Quintleo,  just rang up my friend and confirmed that the chassis dimensions.
It is also rack mountable, when he came to visit he didnt bring the rack mount kit.

Color: black panel, white box
Material: panel SGCC all black sand grain, box 1.2 mm thick steel plate
Dimensions: 420mm*440mm*311mm (length * width * height)
Motherboard: ATX 12 "*9.6" (305mm*244mm)
Power supply: two ATX standard desktop power supply
Graphics: the maximum can be loaded with 7 340mm length of the card
Hard disk: 3*3.5 hard drive or 6*2.5 drive
Heat dissipation: 12 6 double ball high power fan
Package size: 580*580*425mm (length * width * high) packing / double double carton
Weight: 15.2kg

https://www.aliexpress.com/item/Rack-type-GPU-machine-multi-card-case-dual-power-card-heat-dissipation/32750205586.html?

[AriesIV10]

In return, I helped him build a 6x480 rig using a 4U case which I was also interested in before this Panda came by.

 That case pictured, *IF* it is rack mountable, appears to be an 8U case.
 It's not even CLOSE to being a 4U case.

 By specification, a 4U case cannot be more than 7" in height.

You are right Quintleo,  just rang up my friend and confirmed that the chassis dimensions.
It is also rack mountable, when he came to visit he didnt bring the rack mount kit.

Color: black panel, white box
Material: panel SGCC all black sand grain, box 1.2 mm thick steel plate
Dimensions: 420mm*440mm*311mm (length * width * height)
Motherboard: ATX 12 "*9.6" (305mm*244mm)
Power supply: two ATX standard desktop power supply
Graphics: the maximum can be loaded with 7 340mm length of the card
Hard disk: 3*3.5 hard drive or 6*2.5 drive
Heat dissipation: 12 6 double ball high power fan
Package size: 580*580*425mm (length * width * high) packing / double double carton
Weight: 15.2kg

https://www.aliexpress.com/item/Rack-type-GPU-machine-multi-card-case-dual-power-card-heat-dissipation/32750205586.html?

Great Build - Good Looking!  Have you taken a look at the gpu temps/fan speeds yet?  This would be a Push system (the fans push the air into the rig) and air escaped through the least resistance.

[citronick]

In return, I helped him build a 6x480 rig using a 4U case which I was also interested in before this Panda came by.

 That case pictured, *IF* it is rack mountable, appears to be an 8U case.
 It's not even CLOSE to being a 4U case.

 By specification, a 4U case cannot be more than 7" in height.

You are right Quintleo,  just rang up my friend and confirmed that the chassis dimensions.
It is also rack mountable, when he came to visit he didnt bring the rack mount kit.

Color: black panel, white box
Material: panel SGCC all black sand grain, box 1.2 mm thick steel plate
Dimensions: 420mm*440mm*311mm (length * width * height)
Motherboard: ATX 12 "*9.6" (305mm*244mm)
Power supply: two ATX standard desktop power supply
Graphics: the maximum can be loaded with 7 340mm length of the card
Hard disk: 3*3.5 hard drive or 6*2.5 drive
Heat dissipation: 12 6 double ball high power fan
Package size: 580*580*425mm (length * width * high) packing / double double carton
Weight: 15.2kg

https://www.aliexpress.com/item/Rack-type-GPU-machine-multi-card-case-dual-power-card-heat-dissipation/32750205586.html?

Great Build - Good Looking!  Have you taken a look at the gpu temps/fan speeds yet?  This would be a Push system (the fans push the air into the rig) and air escaped through the least resistance.

Temps are low to mid 70s C, fan speed.... from console I can see % which is hardly max; 50-60%

Fans RPM -- no idea how get this out from Linux-SM

The chassis is big and heavy -- and has plenty of room.

I can feel the air flow out from the back vents.