Topic: WTF? Enermax 1500W atx 2.4 platinum! atx 2.4 and platinum vs 2.3 bronze psu? (Read 4582 times)

is there anything better than having to look through 20+ price compare sites? This takes very long...

I would take extra caution buying hardware at that price. I don't know who / where you are buying from, and don't expect you to tell me, nor do I care, however your chances of getting ripped off increases astronomically when you are talking about those kinds of prices. If you are buying them new, I'd say its a complete scam (unless you have some sort of special discount from a personal friend or something) if you are buying them used, be weary of them being essentially broken and refurbished to the point where they might work for a few days before dying again.

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Im very disappointed right now. When I almost bought evrything for a mining rig half year ago I found radeon 7990 for about 250 usd... and 7950 for 170.
Now I have more money but again not enough.Im looking in 23 price comparing sites in uk and ive done that in other countries but (havent found cheap enough yet) this is taking many days.


So is there anything faster than having to look through all these sites?











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All I can recommend is, if you are building mining rigs, go with high end and the best parts. Your GPUs deserve it.

My brother loves to buy cheap PSUs. He'll buy a 800W from any no-name brand just cuz it's cheap, and he think it's a good deal. He's on his 4th PSU in 5 years, and he only uses it for light gaming. No mining, no heavy workstation usage... they're just crappy, cheap PSUs.

I refuse to skimp on the PSU. Only buy well-reviewed units from reputable brands, and they last for years, even at constant, high draw loads.

You get what you pay for. You can still find good deals on some nice PSUs, but do not skimp and buy something cheap (quality wise) just cuz it's cheap (money wise).

And ya, you can skip the Add2PSU if you know how to bend a paperclip into a U shape. If you can't, then you shouldn't be mining.

Thanks for that note.  I always thought that's a gimmick!

deleted due to what i was saying being wrong 

dont bother with add2psu.it just uses peoples' lack of knowledge for simple wiring you can do for less than a dollar.

Thanks for that post, you cleared up a couple of things I've wondered about. In relation to two PSUs being cheaper than one, I wonder about how safe Add2PSU is. I'm slightly paranoid after having had an 850W PSU crap out (sparks and smoke) at 700W, I wonder if anyone has been using Add2PSU for a couple of beefy PSUs for a good while.

First of all, calm down. You typed that OP like you were about to blow a vein over something stupid that's actually pretty insignificant, with bigger issues at hand.

Second, the bigger issue what that 1500W PSU is the fact that it's running 6 rails. Each rail is 30A, but all 6 rails can only put out 125A combined. This can be a little funky to manage, making sure that you're not overloading one rail with too much power, but also trying to balance the load between all 6 rails.

Third, I've never even heard of the ATX 2.4 PSU spec. I can't find any info on it in a google search. I have no idea what it adds and what it takes away. Judging from the incrimental updates from 2.0 to 2.1 to 2.2 to 2.3, it won't be something huge. See http://en.wikipedia.org/wiki/ATX#ATX12V_v2.01

And lastly, the difference from Bronze to Platinum is only how efficient it is. A bronze PSU will not ever get agove 85% efficient. A titanium PSU can get upwards of 96% efficient! That's pretty damn impressive. Higher numbers means less wasted power, and less heat to deal with.

Lets say your PSUs are running off 220V outlets. If your GPUs are pulling 1500W (which means 100% load), the difference between a Bronze (81% efficient) and a Platinum (91% efficient) is pretty big. Assuming all other factors are the same, the bronze will pull ~1850W from the wall, while the platinum will only pull ~1650W from the wall. By buying a more efficient PSU, you just saved yourself 200W from every single rig. That's a savings of ~$20 per month, and the lower heat/temps are sure to help your PSU last longer.

Yes, it is ofter cheaper. More efficient? Probably not.


Just no. For an 80Plus Platinum rated PSU, you will be anywhere between 89-94% efficient, depending on load, input voltage, and other variables. And also, proof that a 80Plus Gold PSU will be within 87-92% efficient, exactly as the spec outlines.


This is backwards. A 1500W PSU is rated for the output voltage, not the total draw at the wall. That 1500W PSU can output 1500W on the 12V lines, while drawing 1650W at the wall (if it was 91% efficient). Most people don't recommend running their PSUs at 100% for 24/7 use for months at a time, but it can do it.


Again, this is backwards. IF you need 750W of power, you should buy a 750W PSU. It may draw upwards of 850W at the wall, if it's 88% efficient, but it will output 750W to the computer/GPUs just like it's supposed to. And yes, cheaper PSUs are less efficient, but not to 50%. PSUs haven't been 50% efficient for years now. Most PSUs that are not 80 Plus will still be around 70-75%, or they may be higher than 80%, but didn't want to pay for the official testing/certifications.

Would you mind help me understand my mistake?

I don't quite understand everything that you stated, but what I did understand is flat out wrong.  I will not get into the technicals as it has been posted by many in the subforums many times (there are even a couple of PSU engineers on these boards).

There multiple threads about PSU's - and many agree its wiser to buy two 750W psu instead of one 1500W, but as of your question in regards efficiency:
AFAIK maximum efficiency of top line PSU's is about 83% or so…  out of 1500W comes to about 1,2KW actual power, which basically will create a 100% load on components inside PSU along with generated heat. Same goes to any other supply. Count that if your system will consume about 750W you will need a PSU with 900W to have nominal efficiency. Now thats in regards top line PSU's; cheaper ones are walking around 50-75% efficiency…
P.S.  efficiency is shown in % under PSU specs

reply anyone??? 

http://skinflint.co.uk/eu/enermax-platimax-1500w-atx-2-4-epm1500egt-a692478.html

at least some platimax psu are atx 2.4 while most are 2.3. Ive seen some 2.31 and 2.32 too but can you please tell me what are the differences?

also should i care about the platinum or titanium psu or should i just get a bronze?

also this article says that manufacturers cherry pick the psu they send and bribe the 80 plus specification inventors.Is this true ?
http://www4.hardocp.com/article/2011/10/04/80_plus_irrelevant_to_you_when_buying_psu/

How do i verify real efficiency?  (killawatt meters are inaccurate)

Also some companies make psu that say the peak wattage instead of continuous.This means that the peak will supply that max wattage for a very short time unlike continuous.
How do i know if psu is peak or continuous?




I think this is very important anyone for everyone who uses a psu especially gpu mines so plz reply