Choosing a PSU

[quakefiend420]

Thanks very much for your input guys, appreciate it!

I have narrowed my search down to the following 2 PSU's -

Corsair CX750 (~$116)
Cougar GX1050 (used) (~$136) link - http://www.newegg.com/Product/Product.aspx?Item=N82E16817553008

Bear in mind these items are expensive where I'm located, hence above prices are a bit higher than you'd expect...

The Corsair is recommended by a lot on this forum, but the Cougar has some good reviews and is also Gold-rated

If you're determined to go with ATX over a server supply, I'd go with the Cougar over the Corsair.  The CX series is only bronze rated and as you pointed out, the Cougar is Gold which will save you in the long term on power usage as well as put out a little bit less heat at a given output.  I had that exact PSU a while back running an 850ish watt load 24/7 and it was a tank up until I sold it.  The extra maximum wattage will also give you more headroom for another miner or for overclocking later, which might be pushing the 750 a bit.

[BitMainBuyer]

If you're determined to go with ATX over a server supply, I'd go with the Cougar over the Corsair.  The CX series is only bronze rated and as you pointed out, the Cougar is Gold which will save you in the long term on power usage as well as put out a little bit less heat at a given output.  I had that exact PSU a while back running an 850ish watt load 24/7 and it was a tank up until I sold it.  The extra maximum wattage will also give you more headroom for another miner or for overclocking later, which might be pushing the 750 a bit.

I'm already pushing it a bit getting the S5, in relation to noise levels, so I really can't deal with adding more noise with a server supply.
I have also bought a couple of Corsair SP120's so hopefully they will make the noise somewhat bearable...

I'm also leaning towards the Cougar so it's good to hear your feedback about it! Thanks

[quakefiend420]

If you're determined to go with ATX over a server supply, I'd go with the Cougar over the Corsair.  The CX series is only bronze rated and as you pointed out, the Cougar is Gold which will save you in the long term on power usage as well as put out a little bit less heat at a given output.  I had that exact PSU a while back running an 850ish watt load 24/7 and it was a tank up until I sold it.  The extra maximum wattage will also give you more headroom for another miner or for overclocking later, which might be pushing the 750 a bit.

I'm already pushing it a bit getting the S5, in relation to noise levels, so I really can't deal with adding more noise with a server supply.
I have also bought a couple of Corsair SP120's so hopefully they will make the noise somewhat bearable...

I'm also leaning towards the Cougar so it's good to hear your feedback about it! Thanks

Ah! Well good news for you there then, the server supplies that I have will be actually quieter than the S5 at that load level(when you get close to max load they'll probably be about as loud as the S5, however).  And cheaper than the Cougar.  And have higher peak power and will also be Platinum rated instead of Gold.  Downside is, it's a miner supply only, just PCIe output and nothing else.

But if you do still want the Cougar I'm sure it will serve you well.  Can't really speak to volume level though, I never paid attention as it was in the rack the whole time, not in the house.

[leowonderful]

Try not to get no-name PSU's, as they can fry basically anything.

[BitMainBuyer]

Try not to get no-name PSU's, as they can fry basically anything.

I totally agree, but does Cougar really classify as a no-name? That's the question...
Also it is Gold certified so that helps.

[hedgy73]

Also remember that the Corsair CX750 only has 2 x pci-e plugs and the S5 needs 4. You could probably use molex to pci-e converters but I'd be wary putting that wattage / amps through them because they can get hot and even melt which is obviously a fire risk.

In all honesty you're better off going for a branded psu with minimum 4 pci-e connections or a server supply with the same. Please take a look at Dogies psu guide if you need any help with an atx unit: https://bitcointalk.org/index.php?topic=486121.0.

If you're thinking about getting another S5 in the future then the EVGA Supernova 1300 or 1600 look just about perfect for the job as philipma1957 mentioned a few posts back as they both have 8 pci-e connectors.

[notlist3d]

Also remember that the Corsair CX750 only has 2 x pci-e plugs and the S5 needs 4. You could probably use molex to pci-e converters but I'd be wary putting that wattage / amps through them because they can get hot and even melt which is obviously a fire risk.

In all honesty you're better off going for a branded psu with minimum 4 pci-e connections or a server supply with the same. Please take a look at Dogies psu guide if you need any help with an atx unit: https://bitcointalk.org/index.php?topic=486121.0.

If you're thinking about getting another S5 in the future then the EVGA Supernova 1300 or 1600 look just about perfect for the job as philipma1957 mentioned a few posts back as they both have 8 pci-e connectors.

Don't even attempt molex to pci-e.   On wattage like this it's not if there is a problem but when.    Converting to pci-e cables normally are also not very good gauge cable, add that to mix as well.

Avoid this just like no name low quality PSU's.

[hedgy73]

Also remember that the Corsair CX750 only has 2 x pci-e plugs and the S5 needs 4. You could probably use molex to pci-e converters but I'd be wary putting that wattage / amps through them because they can get hot and even melt which is obviously a fire risk.

In all honesty you're better off going for a branded psu with minimum 4 pci-e connections or a server supply with the same. Please take a look at Dogies psu guide if you need any help with an atx unit: https://bitcointalk.org/index.php?topic=486121.0.

If you're thinking about getting another S5 in the future then the EVGA Supernova 1300 or 1600 look just about perfect for the job as philipma1957 mentioned a few posts back as they both have 8 pci-e connectors.

Don't even attempt molex to pci-e.   On wattage like this it's not if there is a problem but when.    Converting to pci-e cables normally are also not very good gauge cable, add that to mix as well.

Avoid this just like no name low quality PSU's.

+1 .

[BitMainBuyer]

Also remember that the Corsair CX750 only has 2 x pci-e plugs and the S5 needs 4.

In all honesty you're better off going for a branded psu with minimum 4 pci-e connections or a server supply with the same.

If you're thinking about getting another S5 in the future then the EVGA Supernova 1300 or 1600 look just about perfect for the job as philipma1957 mentioned a few posts back as they both have 8 pci-e connectors.

I've seen other people mention this here that the CX750 only has 2 pci-e plugs, this is wrong. As per Corsair's site it has 4 plugs - http://www.corsair.com/en/cx-series-cx750m-modular-atx-power-supply-750-watt-80-plus-bronze-certified-modular-psu

I also don't like using Dogie's guide. Reason being he gives his rating but doesn't state why for example EVGA Supernova 1300W gets 93.0 rating, while the exact same model in 1100W version gets 78.0 or something similar   .....No explanation and it doesn't make sense. Also, he states the CX750 has 2 connectors, which is probably why people don't realise it has 4.

One last comment, what constitutes a no-name PSU? Corsair/Thermaltake/Cougar/CoolerMaster/EVGA/Gigabyte , is it safe to say these aren't no-names?

[notlist3d]

Also remember that the Corsair CX750 only has 2 x pci-e plugs and the S5 needs 4.

In all honesty you're better off going for a branded psu with minimum 4 pci-e connections or a server supply with the same.

If you're thinking about getting another S5 in the future then the EVGA Supernova 1300 or 1600 look just about perfect for the job as philipma1957 mentioned a few posts back as they both have 8 pci-e connectors.

I've seen other people mention this here that the CX750 only has 2 pci-e plugs, this is wrong. As per Corsair's site it has 4 plugs - http://www.corsair.com/en/cx-series-cx750m-modular-atx-power-supply-750-watt-80-plus-bronze-certified-modular-psu

I also don't like using Dogie's guide. Reason being he gives his rating but doesn't state why for example EVGA Supernova 1300W gets 93.0 rating, while the exact same model in 1100W version gets 78.0 or something similar   .....No explanation and it doesn't make sense. Also, he states the CX750 has 2 connectors, which is probably why people don't realise it has 4.

One last comment, what constitutes a no-name PSU? Corsair/Thermaltake/Cougar/CoolerMaster/EVGA/Gigabyte , is it safe to say these aren't no-names?

I can't tell for sure but the CX750M almost looks like it has 2 pci-e cables with 2 pci-e plugs on each which would be listed as 4.   But since if it is really just using 2 cables it's not the same as having 4 different pci-e cables.

I would try to find someone on here who has that model to see if it's really 2 cords or 4 cords.

[quakefiend420]

Also remember that the Corsair CX750 only has 2 x pci-e plugs and the S5 needs 4.

In all honesty you're better off going for a branded psu with minimum 4 pci-e connections or a server supply with the same.

If you're thinking about getting another S5 in the future then the EVGA Supernova 1300 or 1600 look just about perfect for the job as philipma1957 mentioned a few posts back as they both have 8 pci-e connectors.

I've seen other people mention this here that the CX750 only has 2 pci-e plugs, this is wrong. As per Corsair's site it has 4 plugs - http://www.corsair.com/en/cx-series-cx750m-modular-atx-power-supply-750-watt-80-plus-bronze-certified-modular-psu

I also don't like using Dogie's guide. Reason being he gives his rating but doesn't state why for example EVGA Supernova 1300W gets 93.0 rating, while the exact same model in 1100W version gets 78.0 or something similar   .....No explanation and it doesn't make sense. Also, he states the CX750 has 2 connectors, which is probably why people don't realise it has 4.

One last comment, what constitutes a no-name PSU? Corsair/Thermaltake/Cougar/CoolerMaster/EVGA/Gigabyte , is it safe to say these aren't no-names?

I can't tell for sure but the CX750M almost looks like it has 2 pci-e cables with 2 pci-e plugs on each which would be listed as 4.   But since if it is really just using 2 cables it's not the same as having 4 different pci-e cables.

I would try to find someone on here who has that model to see if it's really 2 cords or 4 cords.

I've had this one as well, and you're correct.  It's two cables with two PCIe connections per cable.

[hedgy73]

Also remember that the Corsair CX750 only has 2 x pci-e plugs and the S5 needs 4.

In all honesty you're better off going for a branded psu with minimum 4 pci-e connections or a server supply with the same.

If you're thinking about getting another S5 in the future then the EVGA Supernova 1300 or 1600 look just about perfect for the job as philipma1957 mentioned a few posts back as they both have 8 pci-e connectors.

I've seen other people mention this here that the CX750 only has 2 pci-e plugs, this is wrong. As per Corsair's site it has 4 plugs - http://www.corsair.com/en/cx-series-cx750m-modular-atx-power-supply-750-watt-80-plus-bronze-certified-modular-psu

I also don't like using Dogie's guide. Reason being he gives his rating but doesn't state why for example EVGA Supernova 1300W gets 93.0 rating, while the exact same model in 1100W version gets 78.0 or something similar   .....No explanation and it doesn't make sense. Also, he states the CX750 has 2 connectors, which is probably why people don't realise it has 4.

One last comment, what constitutes a no-name PSU? Corsair/Thermaltake/Cougar/CoolerMaster/EVGA/Gigabyte , is it safe to say these aren't no-names?

I can't tell for sure but the CX750M almost looks like it has 2 pci-e cables with 2 pci-e plugs on each which would be listed as 4.   But since if it is really just using 2 cables it's not the same as having 4 different pci-e cables.

I would try to find someone on here who has that model to see if it's really 2 cords or 4 cords.

I've had this one as well, and you're correct.  It's two cables with two PCIe connections per cable.

Yes that's correct sorry its been a while since I owned one, they do indeed have 2 cables with 2 plugs on each.

[BitMainBuyer]

I've had this one as well, and you're correct.  It's two cables with two PCIe connections per cable.

Ok, I presume given that it'll be powering a miner 24/7 it would be advised to have dedicated cables for each PCIe connection...

And my seach continues 

[quakefiend420]

I've had this one as well, and you're correct.  It's two cables with two PCIe connections per cable.

Ok, I presume given that it'll be powering a miner 24/7 it would be advised to have dedicated cables for each PCIe connection...

And my seach continues 

It would likely work, but there are better PSUs out there for what you're doing.  Such as the ones in my signature lol

[hedgy73]

Thinking back, for a while I actually had 3 x CX750's running 6 x Antminer S1's ( 2 x S1's per CX750 ). The S1's were pulling 360w / 30 amps each so 2 x S1's = 720w / 60 amps. Which is more than the S5 which pulls 600w / 50 amps. The 2 pci-e cables split into 4 pci-e connectors, 1 cable with 2 connectors powered each S1. The CX750s peak power is 825 w / 62 amps.

Sorry, my memory isn't what it used to be.....

[BitMainBuyer]

I've had this one as well, and you're correct.  It's two cables with two PCIe connections per cable.

Ok, I presume given that it'll be powering a miner 24/7 it would be advised to have dedicated cables for each PCIe connection...

And my seach continues 

It would likely work, but there are better PSUs out there for what you're doing.  Such as the ones in my signature lol

I would consider one of yours if it wasn't for the fact that you're on the complete opposite side of the world to me 

[toptek]

Folks, soon I will possess an S5. I am now looking to buy a PSU.

At some point in the future, it may be anywhere from 2-10 months, I will probably get another miner such as S7 etc.

Couple of questions -
1) Should I get a PSU that will support future miners? Ie. get something like a 1300-1500W PSU?
2) If yes, surely this will be overkill for a single S5 and will end up costing me more in electricity bills?
3) Should I instead get something like a 750W PSU and then later in the year buy another PSU if/when I need one?

Appreciate any thoughts.

1. it wont be i would but i also have tons of PSU .
2. it will only use what the miner uses not what its rating at or does
3. if you do get a 750 make sure it is at least a gold standard with 4 stand alone PCIE plugs try not to share a plug you will need four PCIE PLUGS PLUGGED IN to it to run it right .

[toptek]

Folks, soon I will possess an S5. I am now looking to buy a PSU.

At some point in the future, it may be anywhere from 2-10 months, I will probably get another miner such as S7 etc.

Couple of questions -
1) Should I get a PSU that will support future miners? Ie. get something like a 1300-1500W PSU?
2) If yes, surely this will be overkill for a single S5 and will end up costing me more in electricity bills?
3) Should I instead get something like a 750W PSU and then later in the year buy another PSU if/when I need one?

Appreciate any thoughts.

1. it wont be i would but i also have tons of PSU .
2. it will only use what the miner uses not what its rating at or does
3. if you do get a 750 make sure it is at least a gold standard with 4 stand alone PCIE plugs try not to share a plug you will need four PCIE PLUGS PLUGGED IN to it to run it right .

A few i use, I got deals when i bought them i was there at the right time and place .


http://www.amazon.com/gp/product/B004ETEFTK?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00

http://www.amazon.com/gp/product/B0090I9W66?psc=1&redirect=true&ref_=oh_aui_detailpage_o08_s00


http://www.amazon.com/EVGA-SuperNOVA-1300G2-ATX12V-120-G2-1300-XR/dp/B00COIZTZM/ref=sr_1_1?s=electronics&ie=UTF8&qid=1434572869&sr=1-1&keywords=super+nova+psu

http://www.amazon.com/Thermaltake-Toughpower-ATX12V-EPS12V-PS-TPG-0750DPCGUS-1/dp/B00F0B7KZC/ref=sr_1_15?s=electronics&ie=UTF8&qid=1434572906&sr=1-15&keywords=psu+750


I know they cost more then a server PSU but I don't care much for the wiring part and broke out boards, wires can tend to come lose etc . i have one server PSU I use form time to time but I'm more the plug and play type guy.


Tip: check out any ware house deals you see on Amazon they claim there is no warr but i have had a few things replaced by the brand under warr buying that way not because it went up, i tested it to see or wanted to make sure it doesn't etc .

[quakefiend420]

I've had this one as well, and you're correct.  It's two cables with two PCIe connections per cable.

Ok, I presume given that it'll be powering a miner 24/7 it would be advised to have dedicated cables for each PCIe connection...

And my seach continues 

It would likely work, but there are better PSUs out there for what you're doing.  Such as the ones in my signature lol

I would consider one of yours if it wasn't for the fact that you're on the complete opposite side of the world to me 

Ah, yeah that does make a difference.

I'd go with the Cougar if those two are your only options, then.

[BitMainBuyer]

Ok, say I ended up getting a CSM750, not the CX750.
It's an improved semi-modular, Gold-rated version of the CX750 - http://www.corsair.com/en/cs-series-modular-cs750m-750-watt-80-plus-gold-certified-psu

I thought it would have 4 separate PCIe cables but there are in fact only 2 cables, with 2 PCIe plugs on both....

Should I 100% get a refund and buy something else, or will the above be ok?
I'm at the stage now where I just want to get it powered and running.