is cooler master 390W possible to run ATI HD4850?

archiefan

Distinguished
Sep 9, 2008
4
0
18,510
0
in fact, since I don't have DVD-RW/DVD+RW Drive and Floppy Drive ..

using the eXtreme Power Supply Calculator Pro ..
CPU : E8400
MB : Asus P5E-VM
2 X 1G Ram
1 X SATAsata 500G HD
4 X USB devices
cooler master 390W

with
CPU Utilization 100%
System Load 100%
the result is just 258W..
with Capacitor Aging 20% around 310W

am I using it correctly?
 

BustedSony

Distinguished
Apr 24, 2006
576
0
18,980
0


Yes. That system with a 4850 will only take some 200 watts FROM THE WALL - Measured on my secondary PC.. The 4850 takes 74-90 watts under load. My 4850 crossfire system with overclocked Q6600, watercooling, and six drives takes 390 watts during gaming (with an 850 watt PS.) Everyone has exaggerated ideas of the actual power consumption of computers. That Coolermaster 390 is more than adequate for you.
 

kelfen

Distinguished
Apr 27, 2008
690
0
18,990
2
Man... why the hell get a 4850 and have a 390 psu :eek: NO, not going to happen, don't cut your self short or the light bulb might go out.. :lol:
 

lafontma

Distinguished
Jan 4, 2006
218
0
18,710
6
I imagine people never read review AND look at power consumption.

I'm running a E8400 + HD4870
4 X 1GB ram
2 HD
Burner

off an a Antec 400w without any issues

The total system barely pulls 300w off the wall under load...

So yes you should be fine with a 390 unless the 12v line is crappy and underpowered
 
NO!
Coolermaster PSU's are JUNK!
You should look into a quality 450W+ PSU like This Corsair 450w for $55.
The PSU is one component you should NEVER skimp out on!
When a cheap one fries, there is a good chance it is taking something else with it.
 

dirtmountain

Splendid
Apr 19, 2008
3,530
0
22,860
45
Coolermaster is one of the companies that produced some pretty garbage power supplies in the past, but is now making higher quality ones. They have a problem though that some of their older, low quality PSUs are still around and dragging their reputation down. Unless i see an actual proper review of that specific Coolermaster PSU (i.e. jonnyguru, hardware secrets, hardwarecanucks) i would not trust it in my system, or would i recommend it. Spend the money to get a quality power supply with a good warranty. Corsair, PC Power and Cooling, Seasonic, Silverstone etc.
 

Onus

Titan
Moderator
+1 @dirtmountain (yet again). That's pretty much exactly what I was about to write. The last technical review I read on a low-wattage CoolerMaster indicated it may be acceptable on a very low-demand system, but could not quite maintain its advertised ratings. That is typical of cheap PSUs.
 

jthorn

Distinguished
Aug 15, 2006
138
0
18,680
0
PSU output degrades over time (aging capacitors). So plan accordingly. Also, I believe vendors recommend 450w system PSU when using 1X4850 GPU, to safely account for the fact that there are so many cr$^%p power supplies out there. Anything less is a gamble.
 

rgsaunders

Distinguished
Jul 10, 2007
401
0
18,780
0


Although their quality has improved, judging by the most recent review at AT, their voltage regulation still leaves a lot to be desired, notably on the lower voltage outputs suck as the 3.3 and 5V. Although they are still within limits, their regulation is poor for what purports to be a high quality powersupply. http://anandtech.com/casecoolingpsus/showdoc.aspx?i=3402
 

Grimmy

Splendid
Feb 20, 2006
4,431
0
22,780
0


216w total power for the 12v side. That's about 18amps. It will prolly run in getting into windows, but when you try to game with it, ummm... it might go boom. Or was that.. kaboom? :oops:
 

rammar16

Distinguished
Jul 8, 2008
180
0
18,690
2
i am going to vote no

the 4800 series isn't near as efficient as the 3800

however i think it wouldn't be that expensive to up that PSU a bit to get it to work

i would say a 500watt could easily do it(get corsair PC power and cooling, silverstone or another good name)

hope this helps
 

husky mctarflash

Distinguished
Dec 3, 2007
215
0
18,680
0
Regardless of who you believe, you should be able to ebay your current supply and get what--maybe $20? Take that $20 and buy a quality one like said Corsair or http://www.newegg.com/Product/Product.aspx?Item=N82E16817341012. We are talking a net $30 here--not $300. Unless you have some crazy form factor that requires a proprietary PSU (which you don't), I don't know why you would chance it when you could drop $30 (or $35 for the 600 watt version) and never have to give it another second's thought.
 

one-shot

Distinguished
Jan 13, 2006
1,369
0
19,310
8


What do you mean they aren't as efficient? The 4800 series out performs the 3800 easily and uses a little more power. My 4850 is pretty close and sometimes beats a 3870X2 and does beat it with AA on. So you're still saying the 3800 series is more efficient with 2 cards equaling 1 4800 series card?
 

dirtmountain

Splendid
Apr 19, 2008
3,530
0
22,860
45
I'm not disagreeing with with rgsaunders, Coolermaster power supplies are still suspect, but they are making efforts to raise their quality.
http://www.hardwaresecrets.com/article/538/1
One reason so many people recommend PC Power and Cooling and Corsair power supplies is that make every effort to insure that every power supply they have manufactured for them is a high quality unit and they always have. You don't have to search out each specific model to see what capacitors it uses, who assembled it or if it's a garbage unit. I think that OCZ has learned the same lesson after acquiring PC Power and Cooling and have been upgrading all their power supplies and discontinuing their older, weaker units.
 

Similar threads


ASK THE COMMUNITY