Topic: [Guide] Dogie's Comprehensive Power Supply Analysis - page 4. (Read 23162 times)

does all PSUs need to be paperclip empowered?

edit: and i dont get, i have a seasonic 750 80plus gold: why this PSU is so low rated in your analysis

750s are too close for 2x S1s overclocked in the long term as you'll be running them at ~825 24/7. If you want a solution for super long term, get 1200AX's. They are expensive, but you can load them at 1300 24/7 (3 S1s OCed) and they have a ridiculous 7 year warranty.

Redundant power supplies cost twice and much, and its not mission critical. If a PSU fails, you unplug it and plug another one in. Nothing lost. Same with UPS, it costs so much to have even 10 minutes of backup power for a mining operation, but the cost of 10 minutes of interruption is virtually nothing.

No reason to sync PSUs unless they're bridged (powering the same hardware).

If the circuit is rated to run that current, it will run that current. You can run as many circuits as you like as long as none of them exceed the spec of the wiring, the circuit and the overall system. Consult a qualified electrician.

PSU efficiency is highest at around 90% but the difference is minimal.

No problem

So I'm currently on the fence between the cx750/cx750m, the dell Z750P+gekko science board, and a IBM Blade Servers (DPS2000) ($40 off ebay).

I'm currently running two antminer s1's (dual blade) connected to one cx750m. Everything appears to be running smoothly, any critique's on this setup?

I will be buying a lot of antminer s1's over the next couple of weeks, The psu's I buy from here on out I'd like to be scalable, which from what I understand could be any of the three power supplies I've mentioned above. Suggestions?

Eventually I will be swapping all the antminer's for monarch's, but that will be farther down the road, however I would prefer to not have to buy new psu's. Obviously we don't have power specs on the monarch's yet, but from a rack power and organization standpoint, if you are going big which of the three psu's above would scale the best?

I noticed no one has mentioned redundant power supplies, why not?

I also noticed no one has mentioned UPS's, what are you guys using for that?

Are there any advantages to running psu's in sync when they are outside a computer?

In relation to house circuit power, as long as I'm not blowing any circuit breakers, I shouldn't have to worry about if I'm on a 15A or 20A or 30A circuit right? I only should have to start looking at that when circuit breakers start tripping? Or in other words, if I need more power I should just run another 15A circuit right, not try and increase the 15A to 20A or something?

Someone said somewhere about keeping your circuit power utilization under 80%, is that really necessary and if so any suggestions on metering devices?

you rock, thank you! I'll be building the rig this weekend

Easy peasy.

Thanks I got two CXM 750's. What is the best dual PSU adapter to get them running in sync? My motherboard is the ASRock H81 pro BTC

CXM I usually go for.

TXM or CXM 750? pretty close on spec, but the more expensive one (not by much) has a 5 yr warranty instead of 3.

It wouldn't do well, it only has 65A for PCI-E devices due to its split rail design. Thats 780W on a 1250W PSU.
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Thank you for your thoroughness and prompt response. I'm new to the mining rig game, but use to build PC's back in the day. It seems like your PSU ratings anything over 850 is on the average to poor side. I may have missed this in the thread, but is it more efficient to stack lower wattage PSU's than get a big one? I'm building a rig, but it will be pieced together (only 2 GPU's to start, R290 or 290X), and rather than continuously upgrading/swapping out PSU's, I was wondering what best PSU's would be paired. going to build it in a rectangle 19x13x10 milk crate.
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Essentially the larger PSUs can't compete on price efficiency compared to the mid range sizes (~600-800W). Pick yourself up something corsair, can never go wrong. And yes, much more efficient to bridge 2 mid PSUs than one monster.

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It wouldn't do well, it only has 65A for PCI-E devices due to its split rail design. Thats 780W on a 1250W PSU.
[/quote]

Thank you for your thoroughness and prompt response. I'm new to the mining rig game, but use to build PC's back in the day. It seems like your PSU ratings anything over 850 is on the average to poor side. I may have missed this in the thread, but is it more efficient to stack lower wattage PSU's than get a big one? I'm building a rig, but it will be pieced together (only 2 GPU's to start, R290 or 290X), and rather than continuously upgrading/swapping out PSU's, I was wondering what best PSU's would be paired. going to build it in a rectangle 19x13x10 milk crate.

It wouldn't do well, it only has 65A for PCI-E devices due to its split rail design. Thats 780W on a 1250W PSU.

I didn't see the Thermaltake in your pricing. Thoughts on this?

Toughpower XT Platinum 1275W Snow Edition
https://www.thermaltakeusa.com/products-model.aspx?id=C_00001874?

ebay: $199
Other sites $219-249

Since the OP hasn't been updated in a while, I had some spare time and recoded my backend that parses out forum bb code, restructured my pricing table a bit, removed useless portions of my own post that were there, and added more relevant and useful data for the user.

Updated the pricing post.

Now there are several vendors listed: Newegg, TigerDirect, Amazon, Frys, and an "Other" field to accommodate special deal opportunities.

For now that portion of the table will show only the better deals that are currently available.  I may eventually opt to have direct links to all the vendors for all supplies and just bold or single out the most cost effective one, but for readability I'm keeping it simple for starters.

The L/AVG/H pricing data gets updated for all each update iteration so it will keep current with the cumulative running pricing long term, whereas the right most portion of the table will single out "good deal" opportunities at the moment.

But maybe there are better ideas out there.  Feedback and/or collaboration is welcomed!

New current deal opportunities:

• CX 430W @ TD for $20 AR [Listed in OP: $40; Actual Price using OP link: $50]
• SeaSonic G 750W @ NE for $80 AR [Listed in OP: $112; Actual Price using OP link: $130]
• XFX PRO750W @ AM for $75 AR

Updated the pricing post.

Have been busy with work and life this past 12 days since my last post in this thread.  But since my pricing post has L/AVG/H pricing all the pricing is still pretty much very up to date.  Funny how that works that way.  

Two changes though -

I added a new link to the Z750P option and updated that pricing.  You can get $10 or less Z750P supplies if you know where to hunt, or you can get an entire kit from sidehack that has the supply, board, and cables for $70 which is pretty competitively priced.  So all that was added to the updated pricing post.  I've purchased server interface boards and cables from sidehack.  Trustworthy guy, and he and his minions as he calls them do good work.

Added the CX500M and CX600M to the pricing table.  

OP has CX500M listed as $54.99, actual price via OP is $60.92, but the CX500M  is currently available for $34.99 AR.  

OP has CX600M listed as $64.99, actual price via OP is $71.73, but the CX600M is currently available for $44.99 AR.  

If modularity is important it may be worth the premium above the regular CX series sale prices.  Otherwise for purely mining hardware powering purposes, there are more cost effective options.

It probably can with some creative wiring but I wouldn't recommend doing so. 

You should be looking at supplies with multiple +12V rails.

Will that CX500 power one OC'ed Antminer?

Updated pricing.

Added pricing for CX500.  Listed in OP as $49.99.  Actual price via OP link is currently $57.74.

Currently the CX500 is available for $29.99 AR.

Probably one of the most cost effective supplies available at the moment now that the $19.99 AR 430W deal is over.

Deal for the CX600 is still on-going.  $12 off promo ends 3/6.

Actually it's $37 AR and the $12 coupon (EMCPHHB25) as listed in the post above yours and linked in this post since yesterday.

Also, even if you don't go the credit route, you can get a free trial of ShopRunner and usually get it extended almost indefinitely.

ShopRunner = Free 2-day Air shipping from Newegg

Got my CX600,I can confirm it has 2 separate PCIE cables with 1 6+2pin PCIE connector on each!!!  

Perfect for 1 Antminer  

From Newegg $69 free ship ATM,but the free ship is 4-7 day via DHL    So I opted for 3 day UPS at $5.99     Total= $76 

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139028