Sign in with
Sign up | Sign in
Your question

is cooler master 390W possible to run ATI HD4850?

Last response: in Components
Share
September 9, 2008 2:32:59 AM

thats pushing it
September 9, 2008 2:33:12 AM

Without specs on the psu, id be saying NO.
Related resources
September 9, 2008 3:00:21 AM

Definately not. The only thing that you would be able to run on that PSU is an 8600GTS or 4670 and if that..
a b à CPUs
September 9, 2008 8:13:23 AM

I think the minimum for 8800GT is 500W, so for a 4870 it should be somewhere around 600W.
September 9, 2008 9:33:37 AM

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?
September 9, 2008 10:47:05 AM

archiefan said:
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?


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.
September 9, 2008 1:03:15 PM

Man... why the hell get a 4850 and have a 390 psu :o  NO, not going to happen, don't cut your self short or the light bulb might go out.. :lol: 
a b ) Power supply
a b à CPUs
September 9, 2008 1:15:08 PM

^+1.

General recommendation for that GPU is a 550W or higher unit from Corsair, PC Power & Cooling or other good manufacture (ie. Antec, OCZ).
September 9, 2008 1:16:59 PM

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
a b ) Power supply
a b à CPUs
September 9, 2008 1:17:08 PM

BustedSony said:
That Coolermaster 390 is more than adequate for you.

EPIC FAIL! That PSU is cr@p. Just ask Zorg or any one else who knows PSUs well.
September 9, 2008 1:23:10 PM

Doesn't CM use rebranded psus? I think they're TIER 3+ on 'the list'
a b ) Power supply
a b Ĉ ASUS
a b à CPUs
September 9, 2008 1:26:50 PM

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.
a b ) Power supply
a b à CPUs
September 9, 2008 1:27:12 PM

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.
a c 121 ) Power supply
a b Ĉ ASUS
a c 129 à CPUs
September 9, 2008 1:51:25 PM

+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.
September 9, 2008 1:52:41 PM

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.
September 9, 2008 2:46:53 PM

Onus said:
+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.


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=340...
September 9, 2008 3:11:33 PM



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: 
September 9, 2008 3:49:01 PM

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
September 9, 2008 3:54:24 PM

Grimmy said:
http://www.coolermaster.com/UserFiles/Image/PSU/RS-390-PMSR-A3-output.jpg

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: 


I guess shutdown. Liek everybody said you better go for a 550w corsair. Cheap, reliable, silent. I would nto say kaboom like grimmy, i say shutdown once in 3d.
September 9, 2008 4:11:59 PM

Not even a... "I think I got it, I think I got it, I think I... kaboom?" :oops: 
September 9, 2008 4:19:46 PM

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=N82E168.... 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.
September 9, 2008 4:22:48 PM

rammar16 said:
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


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?
a b ) Power supply
a b à CPUs
September 9, 2008 4:49:52 PM

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.
September 9, 2008 5:45:30 PM

Well said Dirt Mountain. Toms actually uses a Coolermaster Real Power 850W on a lot of their tests. I have a Coolermaster Real Power 650W RMS, not peak. I chose this PSU because of some of the reviews I've read and so far I have not regretted buying this PSU at all. I've had it for over 2 years and it's still going strong. Some brands have low end models. You cannot base 1 lower end model's failure and make the assumption all of them are the same quality. That would be very ignorant to do so. I think people here strive not to be ignorant and in fact knowledgeable.
September 9, 2008 6:00:19 PM

eddieroolz said:
I think the minimum for 8800GT is 500W, so for a 4870 it should be somewhere around 600W.

OP said a 4850. Not a 4870.
September 9, 2008 8:35:17 PM

there is enough amps on the rail to make a 4850 to work, it should work fine as long as u dont oc, but ur cutting it close.
September 10, 2008 3:31:30 AM

I'm a rookie especially on PSU ..with G35 built-in display in MB P5E-VM and budget short , dealer suggested that 390W is ok for normal usage. However, after I tried to play a 3D game.. ha ha .. so I plan to purchase a better display card like HD4850 ..instead of that coolermaster 390W PSU .. I do have an antec SP-400 PSU.
any suggestion?
September 10, 2008 6:54:31 AM

I'm sure it will work. Don't listen to the Nimrods. THG's boards are pestered with people who wouldn't let anyone use a sub 500W-PSU. It's worse than with used-car salesmen.

I have the exact same system you have (just a different mobo) and mine runs on a Seasonic 330W PSU. A buddy of mine runs an E8400 with a HD4850 in a Shuttle Cube with a 250W PSU. I had my doubts there, but it works too.

Don't let them talk you into buying a new PSU before you try the old one. Nothing bad will happen. The worst thing would be your computer crashing everytime you play a 3D game. Then you could still buy a new PSU.
September 10, 2008 1:31:01 PM

The Seasonic (330w) perhaps has more amps on the 12V. Looking at one model, it will provide 288W, which is even more then the cool master 390W:



I've had in the past overloaded a PSU, which was using 3 SCSI 15K rpm drives, dual PIII 450 slots, with all the other common components, and let me tell ya.. the 250 watt PSU got so hot, you couldn't hold your hand on the PC case to where the PSU was located. This was lil way back when I was getting abit more into SCSI, not realizing the initial power needed to start those drives up was the main problem. :lol: 

But anyhoo, you can be fortunate, or unfortunate when it comes to using a PSU that is under rated to do the job. Sometimes it will cause more damage then you'd expect, other times it won't. Its up to the operator to take his/her chances on what they think will work.
September 10, 2008 2:15:15 PM

tim851 said:
I'm sure it will work. Don't listen to the Nimrods. THG's boards are pestered with people who wouldn't let anyone use a sub 500W-PSU. It's worse than with used-car salesmen.


It is not about a sub 500 PSU. It is abotu having a decent quality one. Most peeps that come here complaining of BSODs, crashes, locksups, and shutdowns during gaming, most problems are PSU related.

tim851 said:

I have the exact same system you have (just a different mobo) and mine runs on a Seasonic 330W PSU. A buddy of mine runs an E8400 with a HD4850 in a Shuttle Cube with a 250W PSU. I had my doubts there, but it works too.


Albeit the wattage is important, the amps on the 12v Rail are even more important. By the way, according to Shuttle all PSUs are now 400w and a 80plus category. They are very good PSUs. And the shuttle Cube is a very good system overall.
Don't dumb down even more the PSU wattage, or in a few posts we will have self-sufficient PSUs that run on air and pubic air. Take a picture of your Cube PSU so we can see the real wattage. My TX750w gives can get a output of 900W.

tim851 said:

Don't let them talk you into buying a new PSU before you try the old one. Nothing bad will happen. The worst thing would be your computer crashing everytime you play a 3D game. Then you could still buy a new PSU.

[/quotemsg]

Lets hope what grimmy says never happens, or you will have another fried piece. Honestly.
September 10, 2008 2:50:00 PM

archiefan said:
I'm a rookie especially on PSU ..with G35 built-in display in MB P5E-VM and budget short , dealer suggested that 390W is ok for normal usage. However, after I tried to play a 3D game.. ha ha .. so I plan to purchase a better display card like HD4850 ..instead of that coolermaster 390W PSU .. I do have an antec SP-400 PSU.
any suggestion?


I orginally replied that the Coolermaster was ok, thinking you had a working system with that CM 390 and were just upgrading to a 4850. It would work fine. HOWEVER if you are choosing a power supply also I would get something a bit better, or, yes, use that Antec 400.
September 10, 2008 8:48:09 PM

radnor said:
By the way, according to Shuttle all PSUs are now 400w and a 80plus category. They are very good PSUs. And the shuttle Cube is a very good system overall.

Well, they're still advertising their G5 Cubes as having the 250W PSUs. (http://us.shuttle.com/G5_3300g_Specs.aspx)
I don't own one at all, so I can't take any pictures.

radnor said:
Don't dumb down even more the PSU wattage

I don't. As I said, even I had doubts about the Shuttle. But it worked. And people have been putting all kinds of monsters systems in these little boxes.

The thing is, people perpetuate myths. Like low power PSUs get hotter. That's not true. How hot a PSU get depends on the efficiency at a given load. That tells you, how much energy is lost in the PSU as heat. If a 1k PSU and a 300W PSU both have 80% efficiency at 200W load, they will both produce about 40 Watts of heat energy. How hot they get then depends on the cooling solution, i.e. heat sink dimensions and fan throughput.

My little Seasonic 330W PSU with a (modded) Scythe 800 rpm fan (that doesn't even seem to hit 800 rpm at all) never gets hot, even after playing 3h of Crysis.

I adviced the TS to just try his PSU before he blindly buys a new one. Chances of an "explosion" due to overtaxing are erratic. In my 20 years of PC as hobby, I've never had a PSU fail on me. The only real world person I know that had one die (and take the computer with it) was not even remotely because of overloading or whatnot. It was a file server with a VIA C3 processor that probably consumed about 50W at load. We never found out exactly why it happened, so we figured God smote him for all the porn that was on the hard drive. Oh my, all that porn...
September 10, 2008 10:26:00 PM

tim851 said:
Well, they're still advertising their G5 Cubes as having the 250W PSUs. (http://us.shuttle.com/G5_3300g_Specs.aspx)
I don't own one at all, so I can't take any pictures.

I don't. As I said, even I had doubts about the Shuttle. But it worked. And people have been putting all kinds of monsters systems in these little boxes.


Ive sold and mounted several of those systems. I can tell you, they are expensive and limited but the hardware inside those barebones are pretty good. And although most are rated at 250W (they sell in 400W also), you will see that what changes the most is just the label. The Psus are 400w, but pretty solid built.

tim851 said:

The thing is, people perpetuate myths. Like low power PSUs get hotter. That's not true. How hot a PSU get depends on the efficiency at a given load. That tells you, how much energy is lost in the PSU as heat. If a 1k PSU and a 300W PSU both have 80% efficiency at 200W load, they will both produce about 40 Watts of heat energy. How hot they get then depends on the cooling solution, i.e. heat sink dimensions and fan throughput.

My little Seasonic 330W PSU with a (modded) Scythe 800 rpm fan (that doesn't even seem to hit 800 rpm at all) never gets hot, even after playing 3h of Crysis.


Never said they will explode. But that his gaming experience would suffer several downgrades due to his gaming. From instability to random shutdowns.

tim851 said:

I adviced the TS to just try his PSU before he blindly buys a new one. Chances of an "explosion" due to overtaxing are erratic. In my 20 years of PC as hobby, I've never had a PSU fail on me. The only real world person I know that had one die (and take the computer with it) was not even remotely because of overloading or whatnot. It was a file server with a VIA C3 processor that probably consumed about 50W at load. We never found out exactly why it happened, so we figured God smote him for all the porn that was on the hard drive. Oh my, all that porn...

[/quotemsg]

Buying in this case (it was suggested a 450W Corsair PSU) isn't money out of te window. Ive been working on it from quite more than 10 years now. I have seen nice rigs burned by bad PSUs. Although the damage many times isn't imediate, i can assure you a bad PSU turn a machine unstable with time. One year, sometimes a bit more.

Most rigs i mounted for friends that let me choose, i putted always a very good PSU. From all those machines, none so far broke. My mother actual machine still rocking her Athlon 1500+ with a Raid 0 after all these years. And there are much more examples like this one.

Brand computers and others mounted with less than good PSUs ussually brake after 2 years.
My current rig ( with is a bit crappy) still has hardware working with 6 years. And going strong. My PSUs in the last 6 years ?

A Thermaltake with 730, and now a Corsair 750. And that Thermaltake took a beating and had a uptime you don't imagine.
Spending a bit on a PSU (Corsair 450w,55$) brings great results over time.
October 17, 2008 5:31:47 AM

seeing that an SLI 8800GT system doesn't use more then 400w... I would say full steam ahead. A lot of people here don't know what they're talking about when it comes to power supplies... I would run it by Jonnyguru.com
a b ) Power supply
a b Ĉ ASUS
a b à CPUs
October 17, 2008 7:17:17 AM

Personally I think your just asking for problems running the 4850 off of either PSU. I'd recommend the Antec 380w Earthwatts for the BARE minimum for your setup. It has 27A on the 12v rails and is >80% efficient. You won't really have any upgrade room with this PSU, but you won't spend an arm and a leg for it either.
Antec earthwatts EA380 380W ATX12V v2.0 80 PLUS Certified Active PFC Power Supply - Retail
!