• 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.

power supply question

B

Bleedblue12345

[H]ard|Gawd
Joined
Nov 1, 2004
Messages
1,942
im thinking of upgrading my 5700le to a g800nu, gt, or ultra.... qould a 300watt good quality psu handle it? im thinking the ultra or gt... thx
 
Probably not. Even a quality unit rated at 300W would produce about 15A on the +12V rail, not exactly enough for what you're looking for.
 
you havent supplied enough information to tell


If youll post your full config w\ everything that is drawing power
I'll give you some realistic values but probably not till this evening
 
its just a basic config.......
1 floppy
1 mobo
1 2.0ghz northwood
512 mb ddr sdram
1 cd-rom
1 harddrive
a 5700le going to be a 6800gt or ultra or nu or something ... and thats about it
running on a 300-watt forton psu with 18A on a twelve volt rail
 
Nvidia claims that the minimum requirments for the 6800nu is a 300Watt PSU. The GT and Ultra is 350W (but a 480W PSU is strongly recomended for the Ultra).

Upon reading reviews I've found that the 6800nu actually consumes less power than the 6600GT (which is amazing IMO).click here
click here (for reference, your 5700 consumes roughly the same amount of power as a 9600XT)
I think that it's possible that your current PSU might be able to stably power a 6800nu, but nothing higher.
 
http://www.xbitlabs.com/misc/picture/?src=/images/video/ati-vs-nv-power/6800_table-b.gif&1=1
http://takaman.jp/D/?M=Pcb@oQbd@dSASgTekG5@TDTHXvHCMZ&english
awarded 2 x 80mm fans, used the P4 2 GHz 1.75V

Theoretical Maximum
+3,.3V @ 4.5A
+5V @ 8.8A
+12V @ 17.1A
275W w\ a supply @ 25C

Real World Worse Case Senerio
CPU\GPU\mobo @ 100% (stock with no overclock)
Optical at 100% Spinup
Fans and HDD @ 25% post spinup static draw of 0.8A
+12V @ 13A

the Fortron was rated at 25C so the derating curve would likely put it around 12A @ 40C
but they are also conservatively rated, Id say that if it had stable source power (UPS) and a cool operating environment, it might actually do it reliably, but your damn close to the edge

any problems would be of the truely intermittent variety
induced by an AC sag or too high an ambient coupled with the wrong combination of draw
might be able to just avoid spinning up an optical when your at full load and get a UPS
there might also be a cross load total capacity issue
most any other supply and Id say definately no,
in any event a wider safety margin would bring peace of mind
;)
 
ya i guess so but i have a gateway and i had to order a "specially made psu" that one cost me $80... does anyone know if gateway uses atx power supplies?
 
yes they do
but you might have been better off choosing it yourself
 
I want to install a Nvidia Geforce 7950GT KO video card in my Gateway GT5252. This card requires a minimum of 400W PSU, but I'm not sure what unit to go with. Everything in the system is stock....

The Gateway case is a Mid-Tower uBTX case, Form Factor Micro BTX, Case Style Mini Tower.

The motherboard is a FIC K2BC51 LF, microBTX Form Factor, and it has an AMD Athalon 64 X2 4600 CPU.

The current power supply is 300-Watt uATX/BTX Non-PFC.

The whole uATX (micro ATX?)/BTX thing has got me really confused. I chatted with 2 different guys at gateway support, and got 2 different answers. First guy told me they sell a PSU for my system that will work (Startech 400W PRO ATX12V 2.01 PS w/PCI Express), but we got cut off during the course of our conversation. The 2nd guy I chatted with said that no, this PSU won't work, and that I need a microBTX PSU (which they don't sell, of course). The problem is, I can't seem to find a microBTX PSU for sell anywhere. The closes thing I can find on newegg is the Athena Power AP-MP4ATX40 MicroATX ver2.2 400W..

At this point, any advice is welcome. Thanks for the help.
 
You must log in or register to reply here.
Back
Top