******, jeantech , sweex power supplies ? ? ?

Hi Decto , ,
Heres the blarb that i dont understand, , but you obviously will ,

Model JNP-700-A12C

VOLTAGE 115V - 230V
FREQUENCY 47-63Hz
CURRENT 10A
EFFICIENCY 80%
P.F. 0.99
+3.3V 28A
+5V 0.5A/30A
+12V RAIL 1 1A/16A
+12V RAIL 2 1A/25A
+12V RAIL 3 1A/17A
-12V OA/0.5A
+5Vsb 0.1a/2.5a
+3.3v & +5v 180watt
Total output 700watts
, , , Can you put that into english for me please ? ?:eek:
 
I've found the Jeantech PSUs are ok for a cheap rig, htpc etc, so long as its not going to have a GPU of any power draw I'd stick with it.

Im using a 400w in my fileserver as I know its only drawing minimal power. Wouldnt use on in a gaming rig though, as it wont be anywhere near as resiliant as a 400w Antec, Tagan, OCZ etc.
 
Hi Pastymuncher, ,
Thanks for the links, , i have done a little research on this model this evening as well, but the links were handy.

So , , in effect, the storm 700watt is a pretty much rock solid psu that does what it says on the box, , and does it well by all accounts ,.

As the storm 700 is jeantechs flagship psu i dont think it can be compared to its budget models, although there seems to be a lot more people who have had unproblematic psus, compared to those that have slated the brand.

There seems to be a surge of people on here that think corsair is the be all and end all of power supplies , , , my previous system fried because of a corsair psu, , i for one will never touch one again , and i certainly wont be recommending any corsair psu to anyone, , how can i, when my last pc died because of one ? ? ?

I do hope this storm 700 watt psu turns out to be a good un , , , i havent found a single bad review yet, , not one !
 
rxkevco said:
So , , in effect, the storm 700watt is a pretty much rock solid psu that does what it says on the box,
Click to expand...
I would hope it doesn't do what specs say.
Maximum allowed ripple for lower voltages is 50mV and 120mV for -12V.
Yeah... rock solid... just like rapakivi.


rxkevco said:
I have been advised by studio engineers and other people using cubase 4 that 600watt is a minimum for high end audio production
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Are they using them to power car audio amplifiers?

Only way components of your PC can reach 200W power draw is short circuit.
 
rxkevco said:
There seems to be a surge of people on here that think corsair is the be all and end all of power supplies!
Click to expand...
i agree.
rxkevco said:
my previous system fried because of a corsair psu, , i for one will never touch one again , and i certainly wont be recommending any corsair psu to anyone, , !
Click to expand...
me too, some of my hardware got fried because of a corsair psu. people told me to buy another corsair but i thought why should i buy another one which costs a lot and may go bang again. so i choosed to get a cheaper psu which is still very good quality, more powerful, 4 12v rails @ 20A, also its still a Modular, plus its lasting a lot longer than my old corsair did ,:D
 
That makes two of us then Gareth, , ,

EsaT, , , all i am trying to do is put a new pc together for a reasonable price.
My fantastic corsair psu fried a perfectly good pc that took me ages to get to my liking , , , i have spent a hell of a lot of money getting a new pc together , i was only waiting on a OCZ psu.
It arrived, , , it was dead on arrival, , , another shining example of reliable power supplies !

I have had a **** week , i cant be arsed with comments like yours , , if you are going to throw figures at me, then have the decency to explain them in terms a newbie can understand.
WHY would an audio engineer want to power a car audio amplifier, , ,? ? why be so snotty, , if you cant add something constructive and helpful then dont ****** bother.

All the reveiws i have read from pc magazines and online reviewers seem to paint a very suprising picture of the storm 700watt psu.
I cant find any horror stories anywhere, , apart from people on here just scarmongering simply because they wouldnt be seen dead with a " cheap " psu in their system. . . . . .
Sure , the jeantech brand isnt very well respected, but the storm is a completly different psu to the rest of the line the produce.

I am sure there would be a law broken if the maximum ripple was dangerous, , , ,I am not an expert so once again, , please explain your comments in terms i may be able to understand.
I have only registered with this forum to LEARN from those who are willing to SHARE their knowledge, , in a dignified manner, taking into account the lack of knowlege that some of us are trying to improve.

My previous recording studio pc (the one fried by the corsair psu ) was drawing a lot more than 200watts. Doing a complex song using cubase 4, , lots of software effects, , lots of audio and midi tracks, , lots of soft synths and samplers pulls power like there is no tommorrow.
My new build has more , faster ram, , more HDDs, a quad core processor, 2 dvd drives, zalman digital temp/fan controller and as such would benefit from a bigger wattage psu, , , i would rather have a psu under no strain at all at 700 watts than a 400watt one hitting load all the time.
 
Please stop right there, this is a family friendly forum, and swearing of any kind is not allowed. Expect a holiday from a Don soon.
 
There is also no need whatsover for sarcastic comments and trying to ridicule me for my lack of knowledge.
Why on earth do you think i am asking questions on here ? ? ?

I need to learn , and so far, i have been treated with respect by others who have replied to my posts.
Sarcastic behaviour/comments and trying to belittle someone in public is more disrespectful than swearing, however, i appologise to anyone that was offended by my swearing.

I am new on here, , EsaT, has a lot of history on here , , why has he/she picked me to vent their intolerance of peoples lack of knowledge ? ?
He/she made comments, ,and didnt have the decency to explain what they were taking about.

The majority on here have been very helpful and have helped me to make informed desiscions about building my new pc and i am very grateful for all the help i have recieved, , , EsaT has done nothing of the sort.
 
Chapter 3.2.6 specifies maximum allowed ripple:
http://www.formfactors.org/developer/specs/ATX12V_PSDG_2_2_public_br2.pdf
In PSU exceeding those means model is overrated/output capacitors aren't good enough.
Components might be equipped to be able to cope with higher ripple but those are the limits they're designed to withstand as minimum.

Also most important thing affecting to real output capacity, real/"combined" 12V output (there's only one real 12V rail) is hidden to small print but they sure advertise those so useful for conning, virtual rails. Not exactly sign of trustworthy maker.

G0 Q6600 is about 80W peak draw, in desktop 8600GTS is probably about 30W because of not being high end power waster and audio work won't stress it in any way. Then 50W for other standard components. (and 10w per every additional HDD)

rxkevco said:
I am sure there would be a law broken if the maximum ripple was dangerous
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Advertising is legalized lying.
Even though it would exceed ATX specs that probably wouldn't be enough in court because they've specified it doesn't stay inside those limits.
In "uncivilized" times that kind behaviour would have been awarded by "neck swing" or something similar, now it's called as marketing and awarded by bigger profits.
 
Thankyou for trying to clarify your point. The link confirmed what you have already said , but that wasnt in any doubt. My understanding of electronics is very, very limited. I dont understand voltage, amperes, ripples etc so reading the document has only confused me more.

What i would like to know is, , , How does this affect the power supply ? ? what might happen to it, , ? what danger does it present and how does it affect me ? /

Why have all the reviews i have read about this psu indicate that jeantechs claims are all correct and the psu exceeds expectations and performs within the boundaries set out on the box ? ?

Lots of online and magazine reviews rave about this psu, , , a few people on here say its rubbish , , , how can i make an informed decision about wether or not to keep this psu or take it back and get another ? I trust the opiions of the people on this forum, but i cant deny the detailed reveiws and tests performed on it ?

Getting back to wattage, , , if what you say is correct, then i would be able to get a lower wattage psu that will still run my system effectivly ? But also, , doesnt having a lot of power to spare mean that the psu will never be under full load, and as such, will last a lot longer and just tick away nicely instead of belting along like a lower wattage psu ? ?
 
watts isn't that much important really. its the amps thats more important..

example, u could have a psu that as high wattage say 1000w but maybe as low amps so basicly it won't run much even thought its 1000w.
 
Thanks for that Gareth, , getting very stressed out by all this power supply lark now , as i am sure you can tell.
I dont really understand amps and volts and watts, , , am ou on a limb, , so in a nutshell, i have gone and got something that is far too powerful for what i need, , but is also craap anyway, , , at £80 !

I have the psu now, , the last peice of the jigsaw, , ,all ready to start building in the morning, and now, , , i dont even want to start it in case i have made a huge mistake with the psu !:(
I dont know wether to take it back or not now ?
It waas bought in the midlands, but i am back home now in yorkshire.

I am restricted to pc world,anyway , and to be honest with you, this storm 700 was the best psu they stock, , apart from some £149 1000watt jobbie which is out of reach.

I am having difficulty believing that a new asus board, q6600 cpu,4gb of PC2 8500 GEIL ram 3 x 500gb sata drives, 2 dvd drives a creative audigy 4 soundcard, 8600GTS graphics and a wireless card , all come to under 200 watts as suggested earlier.
 
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Juuuuuusttttt buy a PSU and be done with it. Things go wrong, you happened to be one of the few who had a Corsair go. My Coolermaster went the other month...Quickly RMA'ed and back to business.

I dont see the need for all this indepth talk about it.

**EDIT** Oh wait you did, teaches me for skimming. Btw you'll be fine, PSU's more often than not dont take other components out from my experience.
 
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Am sorry for the post dragging on unecesaryily, , i was delighted that i had a new psu a few hrs ago , , , until people on her started telling me how crap my new psu was, , ,
Now i cant even be bothered to put the system together anymore.
Was really looking forward to it as well.
 
rxkevco said:
Lots of online and magazine reviews rave about this psu, , , a few people on here say its rubbish , , , how can i make an informed decision about wether or not to keep this psu or take it back and get another ?
Click to expand...
Always check validity of review by this way:
Did they really test it or were they just drooling over advertising, polished shiny surface and "only driving was around parking lot using first gear"? After all you wouldn't trust any car review if they did only that.
Now majority of PSU reviews are like that. Good example is this:
http://www.tehomylly.net/artikkelit/70
Basically they're saying this PSU is OK although specs/insides would immediately tell thruth.
Now here's same PSU actually tested: (replace censored part by that "hexagonal" site)
http://www.*****.net/content/item.php?item=1359&page=19
Quite a difference!


No doubt overall quality of PSUs has risen by huge amount in last years when more than couple websites started doing actual testing instead of believing marketing lines but that kind junks are still sold in places like eBay and only reason they aren't constantly blowing up everywhere is that components don't draw as much power as generally claimed.

But weak made PSU can still break up even though it's never stressed. Neighbour had one of the famous Antec SmarPowers (450W) fail with muffled pop when turning PC on and that PC probably had peak draw around 130-150W and practical draw 50W lower... nothing like substandard wildly varying quality Fuhjyyu capacitors. When selecting parts I originally warned about low reliability of that PSU bundled with case and didn't take longer than five months to answer to call for telling it's time to get another PSU.
Good thing they don't use those capacitors much anymore...


Considering catastrofic failures I don't think those can never be fully eliminated (even hundred million dollar rocket boosters have their failures) but external factors are probably big factors in them... Thunderstorms being one of the favorites of electronics.
I've heard that older electric installations can be really horrible in many countries and that voltages can be unstable with lot of unwanted extras so it would be also better to make sure that operating conditions stay at least somewhat inside design tolerances... So good surge protector and UPS would be good to have considering PSU shouldn't be stressed even if it might not be what it claims.
Also working grounding is important because without that PSU can't filter noise and voltage spikes/surges well. (cheap PSUs even lack component needed for absorpting any kind surges)
 
rxkevco said:
Hi Decto , ,
Heres the blarb that i dont understand, , but you obviously will ,

Model JNP-700-A12C

VOLTAGE 115V - 230V
FREQUENCY 47-63Hz
CURRENT 10A
EFFICIENCY 80%
P.F. 0.99
+3.3V 28A
+5V 0.5A/30A
+12V RAIL 1 1A/16A
+12V RAIL 2 1A/25A
+12V RAIL 3 1A/17A
-12V OA/0.5A
+5Vsb 0.1a/2.5a
+3.3v & +5v 180watt
Total output 700watts
, , , Can you put that into english for me please ? ?:eek:
Click to expand...

Hmm ... not as straight forward as others but it does look a reasonable specifiation.

Usually they will state the maximum combined 12V output but for this unit it states the combined 3.3v + 5V

The 3.3/5V combined maximum is 180W which is a little less than the 240W if you add the maximum for these two rails. This is fine and common of most PSU. The worst case overall 12V output can be calculated as:

700 - 180 (3.3V/5V combined) - 12.5 (VSB 2.5A x 5V = 12.5W) - 6 ( 0.5A x -12V)

Total of ~ 500W @ 12V (42A) (PEAK) which is as expected less than the combined 696W (58A) from totalling the rails though still respectable.

One small cause for concern is that is says 700w Peak output on the supplier website wheras others brands are generally rated as continuous output.

It doesn't fall into the 'cheap' catagory like the one above I linked to which claimed to be a 650W supply.

It's not a PSU I'd buy and at £80 I think it was quite expensive but for purple shirt prices that's to be expected. I've seen it for around for more realistic prices on the web.

Enjoy your new purchase ...

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Run a 700w storm, as i got stuck and needed to buy somthig local.

Stock fan was loud so got ripped out and replaced, that was over a year ago and its been without issue ever since, 4hds, 2 opticals, 4870 and a e5200 @3.7ghz.

Ultimately ive had name brand psu and no name ones fail, its not somthing id worry about, just set it up and enjoy your new rig.
 
Whilst were on the topic of psu's, can i pick your minds about this...(lil of topic)..would i be able to safely run my 9800gtx, q6600, mobo..etc aswell as running 1 samsung f1 1tb hdd, 1 500gb hdd n 1 80gb disk. Total of 3 hard disks, and still have enough juice to OC?

using 1 of these: http://www.overclockers.co.uk/showproduct.php?prodid=CA-016-HP or is der summit better? - im a lil worried after me last PSU blew, as i previously mentioned.
 
djcrowle said:
Whilst were on the topic of psu's, can i pick your minds about this...(lil of topic)..would i be able to safely run my 9800gtx, q6600, mobo..etc aswell as running 1 samsung f1 1tb hdd, 1 500gb hdd n 1 80gb disk. Total of 3 hard disks, and still have enough juice to OC?

using 1 of these: http://www.overclockers.co.uk/showproduct.php?prodid=CA-016-HP or is der summit better? - im a lil worried after me last PSU blew, as i previously mentioned.
Click to expand...
yes it'll be fine...
 
djcrowle said:
Whilst were on the topic of psu's, can i pick your minds about this...(lil of topic)..would i be able to safely run my 9800gtx, q6600, mobo..etc aswell as running 1 samsung f1 1tb hdd, 1 500gb hdd n 1 80gb disk. Total of 3 hard disks, and still have enough juice to OC?

using 1 of these: http://www.overclockers.co.uk/showproduct.php?prodid=CA-016-HP or is der summit better? - im a lil worried after me last PSU blew, as i previously mentioned.
Click to expand...

Hiper looks ok but a good 500W PSU will be more than enough for your systems with a decent OC.

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