Tom's Hardware > Forum > CPU & Components > Power Supplies, PC Cases & Case Mods > How'd a 375w PSU survive a Radeon 4850!? O_o

How'd a 375w PSU survive a Radeon 4850!? O_o

Forum CPU & Components : Power Supplies, PC Cases & Case Mods - How'd a 375w PSU survive a Radeon 4850!? O_o

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Finally I succumed to temptation and bought a Palit Radeon 4850 Sonic (Factory Overclocked with dual slot cooling) ......

However, the bizarre thing is that my 375w PSU was able to run the thing! Holy crap!

My PSU Specs :

+3.3v = 28A
+5v = 35A
+12v1 = 16A
+12v2 = 16A
-5v = 1.5A
-12v = 1.5A
+5VSB = 3A

+5v & 3.3v Max = 300W
+5v & 3.3v & 12v Max = 350W

Now researching the specs. It's kinda funny at face value it's total ampere levels could beat most 450W power supplies. First, now I'm impressed on this PSU. And I just bought it from a second shop only like 8 bucks!

Will update this (useless) thread if the PSU decided to blow up due to the Radeon 4850.

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watts aren't massively important (although it does surprise me as well)

Reply to spuddyt

good psu isn't necessarily measured in watts, what mostly counts is your amps on the 12v (for video card) and the psu's ability to pump out it's advertised watts at higher temperatures. And of course stable power distribution.

Just to give you an idea, I run a HD4870, 2 hard drives, 1 DVD, E2180 @ 3.2ghz, PCI sound card, 2 gigs of ram (2 sticks),6 fans and a few USB devices on a 500w power supply. Given it's pretty much the limit it will take.

Message quoted 1 times
Message edited by deardeath on 09-17-2008 at 05:55:42 PM
Reply to deardeath
- -1 +

deardeath wrote :

Given it's pretty much the limit it will take.



How do you know? Does it sigh when you turn on the PC?

@TS: It's not that surprising. I keep telling people that 350W are okay for a 4850. (Unless you have a platoon of hard disks or an overclocked quad core to go along).

Reply to tim851

Nice, I'm not surprised. My overclocked quad @ 2.8 (X3320) with a 4850(oc'ed to 680core and 1100memory for testing, otherwise pretty much stock), 2hds, 2dvd drives, sound card and 3gig of ram. It only uses 250watts when maxed(p3 killawatt). Like it was said, as long as your power is stable and your PSU can pump out the correct amps on the 12v you are fine. When I list my specs people say a 500minimum or even 600. I'm using a 430 earthwatts (was using a 600W ultra, but ebayed it for the cooler quieter earthwatts, for the price I sold on ebay I made money on the earthwatts purchase :)

People always overcompensate on PSU's. No idea why. Trying to sell their high end PSU's?

Reply to lightfoot__

altough this threat is old it wont blow up your psu doing that usualy. i used to run athlon 2600+ system with a geforce 6800 ultra in it in a too weak cheast and with an even weaker psu which was meant for pentium 3 usage actualy. nomatter it worked fine but it can give problems such as overheating or in the worst case instability or lower preformance under load. i couldnt close the case or the ultra would have got cooked it entered near cooking point temps when i closed the case within a minute or too :D
maybe because it was a factory overclocked xfx 6800 ultra but the card still works and is being used in my sisters pentium 4 system now. so im not sure if it would harm your hardware but dont worry to much about killing it. but when you start getting warnings that the minimum voltages are not met then you better upgrade the psu i think.

Reply to spearhead
Tom's Hardware > Forum > CPU & Components > Power Supplies, PC Cases & Case Mods > How'd a 375w PSU survive a Radeon 4850!? O_o
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