• Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
    Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.

This powersupply.

S

STOCKENBLOCKEN!!!!

n00b
Joined
Jan 7, 2004
Messages
37
I think I have found a powersupply I would like to buy, but I have a question.

http://www.newegg.com/app/ViewProductDesc.asp?description=17-103-445&depa=1

Dual 12v rails are not listed as a feature on the newegg site, but I would have thought it would since the other noisetakes do.

Also another q. This is a recommended psw on the faq, but the question is is this powerful enough to last me a long time. I am assuming around 30AMPS total @12v. This seems like a LOT and I couldnt conceive it not being powerful enough for a long time.

2hd,2opticaland a64, currently 4400gt vid that will be replaced with a 6800. I am sure its enough for this, but future setups ie. new cpu,vid.
 
for starters its is likely a dual rail supply, but it lacks the 24 pin main powerr connector that you definately want for any future mobo

let me dig up a link at Maxpoint or Enermax on that model
so you can see the rails
 
Ok so what would you recommend one that also ahs a 24pin with some compatibility for future technology? Is there a 20 -> 24 converter or what? Thank you Ice Czar.
 
OK here is the ATX12V v1.3 FMA series supplies
note that model isnt listed (EG425P-VE-SFMA)

and here are the ATX12V v2.0 Noisetaker P Series supplies
and it is listed but with
18A +12V1
14A +12V2

which doesnt match the sole +12V entry at newegg of 15A

as far as if it enough, please post your full specs (fans, type and speed of drives ect)
so I can make a closer estimation and analyze what kingd of realworld draw there would be on each of the +12V rails
 
STOCKENBLOCKEN!!!! said:
Ok so what would you recommend one that also ahs a 24pin with some compatibility for future technology? Is there a 20 -> 24 converter or what? Thank you Ice Czar.
Click to expand...

yup most v2.0 supplies being sold currently will have that converter
the Enermax v2.0's certainly do

If I was getting an Enermax for future proofing the EG565 Series (current availability unknown) would be my top choice
looks like its aimed at powering SLi and PCI-E
weighting in with dual x 18A rails (36A)

the Currently available CoolerGiant Series also have dual x 18A (36A )

these are strong supplies of basic spec compliance, if your looking to exceed spec however, you need to look elsewhere
they are however the most powerful truely compliant ATX12V v2.0 supplies currently available (that Im aware of)
the Powerstream 600 watt v2.0 was recalled (38A),
the PCP&C 510 isnt compliant (though that doesnt really matter in a supply w\ 1% load regulation) but its expensive
(34A nominal 38A peak @ 40C about 50A adjusted for comparision),
and the Neopower isnt that powerful (33A)
 
Thanks Ice Czar. I guess Ill probably go with a cooler giant. What is the difference between ATX 1.3 and 2.0 besides the extra pins? And what do the extra pins do? Also when will motherboards start needing 2.0? Thanks.
 
the extra 4 pins supply more +12V +5V and +3.3V power to the mobo
and there are single CPU boards out there right now that use the 24 pin


the main changes beteen v1.3 and v2.0 are

1
dual +12V rails in the new spec,
this isolates the CPU and mobo from the potential fluctuation that drives in particular can induce on the +12V rail, however a well regulated supply can get by without those dual rails, it does force less than top shelf manufactures to adopt a new level of voltage stability however

2
increased amps to the +12V rails
modern CPUs are powered off the +12V rail, where not that long ago they where on the +5V\3.3V combined rail, and with an AMD64 at 7A and Prescott upto 9A this is pretty inmportant, throw in a highend graphics card, and in some cases thats another 4A, SLi is a PCI-E enabled strategy and the increase in the +12V rails was adopted to address both the higher levels of CPU consumption and the needs of PCI-E

3
it eliminates the -5V rail, which is unused by almost anything
(or at least was until the OCZ DDR Booster showed up, and at least one ASUS board)

4
dictates higher efficiencies, again top shelf supplies where already heading this way, it just makes sense that you have higher efficiencies with more power being converted, otherwise the thermal solution becomes unweildly, again this forces the lower quality makers to a new standard

5
adopts the 24 pn main power connector from the EPS12V SSI (Server System Infrastructure) standard, again to deliver the added capacity
and make VRMs (Voltage Regulation Moduals) a more standardized component on the boards (that hasnt stopped many from some unique designs however :p )
 
Hey Ice Czar,

I have a Coolergiant EG485AX-VHB(W) SFMA V2.0 , its red in color but the 12V rail specs are listed at 12V1 16A and 12V2 15A ....on the Taiwan site it appears the same PSU is rated at 18A for both rails.

Which is it? Id be happy to know my PSU has dual 18A rails but I suppose what I have is good enough because my PC is not giving me any problems.

Nice to find some other Enermax fans around. :)
 
Id go by what is listed on the supply
the Tiawan site might be planning an upgrade to the model,
and its not in distribution yet (or is)

you could ask maxpoint (Enermax USA) for a clarification ;)
 
Ive asked Enermax and honestly they barely know the products they sell...I shot an Email off to Taiwan so we will see if that turns up anything.

I also want to know what my combined +12V rating is..apparantly when this model came out they did not include that in the ratings as they are now...marketing dept probably figured out people want to see that "big 12V" figure when they buy a PSU.

Also its odd that they did not list what rail the 4 pin motherboard connection is dedicated to ...every single other connection is clearly listed as 12V 1 or 12V 2.

The PCI express cable is right next to it and I am sure that if I looked into the PSU id find them soldered together off the same rail.

Sooo the 12V1 of 16A goes solely to the 24/20 pin and that leaves 15A for everything else that uses 12V.

What does that 4 pin supply? This could be a possible problem if you ask me.
 
the main power connector and the auxillary +12V mobo connector would both be +12V1
the rest +12V2

the combined amps of the two rails should be its maximum +12V potential
but they are split, unused capacity on one rail unavailable to the other

the power supplied to the graphics card via the AGP slot and any +12V power consumed with PCI cards thus being on the +12V1, along with the mobo's own power about 0.3A, mobo attached fans and the CPU (on a p4 or a AMD board with an +12V auxillary connector) all on +12V1

the auxillary power supplied to the graphics card thus is on the other rail
as would be any drives and fans not attached to the mobo

what the auxillary +12V mobo power connector actually supplies would be up to the mobo designer, but typically it augments the VRM (Voltage regulation modual) that powers the CPU\FSB\RAM and passes power on to the PCI and AGP bus as well as the motherboards own power requirements

its was originally adopted as an extention of the main connector
since then the main connector has grown (adopting the EPS12V 24 pin)
but the extra power is still very useful
(2 +12V wires (the other 2 being grounds) , can drop alot more wattage than say 2 +5V wires )
the expansion of the main power connectors 4 pins includes but a single +12V wire
the other 2 rails and a ground attached to the other three pins

on an EPS12V supply the +12V auxillary connector is expanded to 8 pins (4x+12V and 4xGround)
and the rails (which increase to 3 or 4) break out like this

EPS12V 6.1.1 12V Power Rail Configuration

There are two types of 12V rail configurations for systems: 'Common plane' and "Split plane' processor power delivery. The 'commob plane' system has both processors powered from a single 12V rail (+12V1) from the power supply. The 'split plane' system has both processors powered by seperate 12V rails (+12V1 and +12V2) one dedicated to each processor. The system in both cases, has an additional 12V rail to power the rest of the baseboard +12V loads and dc/dc converters. +12V1, +12V2 and +12V3 should not be connected together on the baseboard to ensure that 240VA protection circuits in the power supply operate properly

Table 6: 12V Rail Summary
........................................................................................................................................................................................
Common Plane System........................................................Split Plane System
+12V1........Processors.........................................................+12V1........Processor 1
+12V2........Baseboard components other than processors.......+12V2........Processor 2
+12V3........Drives and peripherals..........................................+12V3........Baseboards and components other than processors
...........................................................................................+12V4........Drives and peripherals
Click to expand...
where its probable that on a common plane system the +12V auxillary mobo connector has its own rail +12V2, and that switches to the +12V3 on a split plane

of course specs are just guidelines and actual implementation varies
with bioth the PSU manufacturers and the mobo designers
 
Thanks, do you think a 16A 12V1 and a 15A 12V 2 can power the following with some headroom leftover?

MSI Neo 2 Nforce 3 motherboard
Audigy Sound card
Geforce 6800 Ultra Oced
Athlon 64 4000+ OCed
2gbs of PC3200
2 200gb HDDs
2 CD/DVD drives/writers
1 floppy


Basically I am thinking about upgrading the Coolergiant to something bigger just for piece of mind.

Which PSU are you using Ice Czar?

thanks
 
for the worksation in my sig I use a PC Power and Cooling 510 AG (an AGP Pro adaptation)
for my NAS I use a Zippy Emacs MR3-6450P N+1


I'll let you breakout the amps per rail :p
http://hardforum.com/showthread.php?t=844691
but give you a head start ;)
http://www.xbitlabs.com/misc/picture/?src=/images/video/ati-vs-nv-power/6800u_table-b.gif&1=1
http://takaman.jp/D/?M=PbbG5IPQbdHdSCgHKiH$kG5@BDlHnvXCMZ&english

Id say that many overclockers favor the PCP&C for its high amps, rock stable rails and superclean power (10mV ACripple)

in the latest Maximum PC review (flawed but indicative) it survived a 50V drop in the AC power to simulate a brownout without any fluctuation to the +12V rail, which was rock steady at +12.08 throughout, (there wasnt that great os a load with just 125 watts) but it was only one of three that managed to avoid shutting down alotogether, and has very high quality power

The Enermaxs didnt make the review, I think because they wanted to put the new EG565 series up against the competition and its not quite out yet

The Cooler Giant line is I think under appreciated in here, most going with the Noisetakers, the Cooler Giants came out after that series and are all ATX12V v2.0 supplies
I like em, based on the specs, but if your looking for an upgrade, there aint all that much above em, the PCP&C as mentioned, likely the new OCZ 600 watt ATX12V v2.0 and the EG565, the Zippy 700 Watt being another contender, one of the few ATX/PS\2 form factor supplies they make

oh and PCP&C is releasing 2 new EPS12V supplies for SLi and storage a 750 watt and a 800 watt both are EATX (deeper)

from a casual glance you have a healthy +12V draw, and even after adjusting various supplies for temperature, I think you fine, but run the numbers to know exactly where your at, as a note, the PCP&C and the OCZ Powerstreams are rated at 40C, while the rating temperature of the rest is unKnown, see the derating curve portion of the 2nd link ;)
 
You must log in or register to reply here.
Back
Top