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350 watt powersupply able to take this?

S

Slash621

Member
i have a 2 year old Enermax 350w psu..

it'd be running this

Barton 2500+ OC'd as far as possible with a SK-7 and YS tech.
1 gig of buffalo CH-5 OC'd as well
on a DFI Lanparty NF2 mobo
Pioneer DVD
52x32x52 CDR
36 gig WD Raptor SATA 10000RPM
4 x 80 gig WD special Editions on Raid 0
Radeon 8500 LE ( maybe flashed to Retail and OC'd )
SB audigy
4 Enermax case fans.


I think thats it....... But can my 350 watt take the abuse from 4 drives on raid? + overclocking?
 
I don't think you needed a whole new topic for this.... But yeah, your PS can probably handle it.
 
Absolutely, a quality power supply will run that.

Originally posted by: Slash621
man.... i woulda thought no way!... i must live in the stoneage or something lol
Click to expand...

No, you probably just spend too much time reading forum posts by big ballers who think they need 500 watt PS's 🙂
 
Depends on the Wattage on the 12V rail. I doubt it though.

You have 2 optical drives and 5 hard drives. That's at least 200W right there. Typical 350W power supply will provide 15-20Amps on the 12V rail which translates to 180W at 15 Amps and 240W at 20 Amps. Read the label on the side of the power supply to determine how many watts on the 12V rail (Watts=Amps x Voltage).
 
Originally posted by: JulesMaximus
Depends on the Wattage on the 12V rail. I doubt it though.

You have 2 optical drives and 5 hard drives. That's at least 200W right there. Typical 350W power supply will provide 15-20Amps on the 12V rail which translates to 180W at 15 Amps and 240W at 20 Amps. Read the label on the side of the power supply to determine how many watts on the 12V rail (Watts=Amps x Voltage).
Click to expand...

You've got to be kidding. Though it's not the same drive in your system, an optical drive such as this Plextor PX-504A will draw at MAX 22.6 watts. Typically (reading and writing) it will be under 9 watts: 500mA and 530mA on the +12v and +5v rails, respectively. The WD 800JB drive draws at MAX 17W. 2.2A and 525mA on the +12v and +5v rails, respectively. The Raptor is 9.75W: 430mA and 925mA on +12v and +5v, respectively. At a worst case, with all 5 drives reading and writing at the same time AND burning cd to cd (are you crazy? 😛) you'd be drawing 134 watts or so with the drives.

I think you'll be fine, especially with an Enermax 350w.
 
You will fine. I have a power supply here that is 145 W and it has ran every system I've used it on so far. It is just used for testing purposes.
 
Originally posted by: beatle
Originally posted by: JulesMaximus
Depends on the Wattage on the 12V rail. I doubt it though.

You have 2 optical drives and 5 hard drives. That's at least 200W right there. Typical 350W power supply will provide 15-20Amps on the 12V rail which translates to 180W at 15 Amps and 240W at 20 Amps. Read the label on the side of the power supply to determine how many watts on the 12V rail (Watts=Amps x Voltage).
Click to expand...

You've got to be kidding. Though it's not the same drive in your system, an optical drive such as this Plextor PX-504A will draw at MAX 22.6 watts. Typically (reading and writing) it will be under 9 watts: 500mA and 530mA on the +12v and +5v rails, respectively. The WD 800JB drive draws at MAX 17W. 2.2A and 525mA on the +12v and +5v rails, respectively. The Raptor is 9.75W: 430mA and 925mA on +12v and +5v, respectively. At a worst case, with all 5 drives reading and writing at the same time AND burning cd to cd (are you crazy? 😛) you'd be drawing 134 watts or so with the drives.

I think you'll be fine, especially with an Enermax 350w.
Click to expand...

I guess I am crazy. Or just not as informed maybe?

I was using figures of:

2.5A per HDD - 2.5 x 12 = 30W x 5 = 150W
1.5A per optical - 1.5 x 12 = 18W x 2 = 36W
0.25A per Fan - .25A x 12 = 3W x 2 = 6W
Total (assuming they are all running at the same time) = 192W

Maybe my estimates of power usage are too high?

Some 350W power supplies supply less than 15Amps on the 12V rail so that would be 180W total. Granted, it isn't very likely that all these devices would be running at the same time but I'd rather have too much than not enough.
 
Originally posted by: JulesMaximus
Originally posted by: beatle
Originally posted by: JulesMaximus
Depends on the Wattage on the 12V rail. I doubt it though.

You have 2 optical drives and 5 hard drives. That's at least 200W right there. Typical 350W power supply will provide 15-20Amps on the 12V rail which translates to 180W at 15 Amps and 240W at 20 Amps. Read the label on the side of the power supply to determine how many watts on the 12V rail (Watts=Amps x Voltage).
Click to expand...

You've got to be kidding. Though it's not the same drive in your system, an optical drive such as this Plextor PX-504A will draw at MAX 22.6 watts. Typically (reading and writing) it will be under 9 watts: 500mA and 530mA on the +12v and +5v rails, respectively. The WD 800JB drive draws at MAX 17W. 2.2A and 525mA on the +12v and +5v rails, respectively. The Raptor is 9.75W: 430mA and 925mA on +12v and +5v, respectively. At a worst case, with all 5 drives reading and writing at the same time AND burning cd to cd (are you crazy? 😛) you'd be drawing 134 watts or so with the drives.

I think you'll be fine, especially with an Enermax 350w.
Click to expand...

I guess I am crazy. Or just not as informed maybe?

I was using figures of:

2.5A per HDD - 2.5 x 12 = 30W x 5 = 150W
1.5A per optical - 1.5 x 12 = 18W x 2 = 36W
0.25A per Fan - .25A x 12 = 3W x 2 = 6W
Total (assuming they are all running at the same time) = 192W

Maybe my estimates of power usage are too high?

Some 350W power supplies supply less than 15Amps on the 12V rail so that would be 180W total. Granted, it isn't very likely that all these devices would be running at the same time but I'd rather have too much than not enough.
Click to expand...

Different drives draw from the rails differently. The Raptor only uses 430mA on the +12v rail, but uses 925mA on the +5v. The WD800JB draws a lot more from the +12v rail. 2.2A in fact! When in doubt, consult the manufacturer's specs on their site. It's always nice to have headroom, but a lot of people (this isn't directed at you) think they need a big 500w PSU to power a single cpu and 3 harddrives.
rolleye.gif
 
It depends on what version of the 350watt power supply you have is, if it's the one I have it only has 17A on the 12V rail 185W 3.3V and 5V combined but 36A on both the 3.3V and 5V rails then prob. not aleast not operating in spec under load, it may work but I doubt it will be stable, if you have the version of the enermax 350watt power supply that has a higher more balanced rating on the 12V line you should be ok, but if you have the one w/ only 17A on the 12V rail I'd start hunting for a new PS as your running it pretty far outa spec.
 
Originally posted by: beatle
Originally posted by: JulesMaximus
Originally posted by: beatle
Originally posted by: JulesMaximus
Depends on the Wattage on the 12V rail. I doubt it though.

You have 2 optical drives and 5 hard drives. That's at least 200W right there. Typical 350W power supply will provide 15-20Amps on the 12V rail which translates to 180W at 15 Amps and 240W at 20 Amps. Read the label on the side of the power supply to determine how many watts on the 12V rail (Watts=Amps x Voltage).
Click to expand...

You've got to be kidding. Though it's not the same drive in your system, an optical drive such as this Plextor PX-504A will draw at MAX 22.6 watts. Typically (reading and writing) it will be under 9 watts: 500mA and 530mA on the +12v and +5v rails, respectively. The WD 800JB drive draws at MAX 17W. 2.2A and 525mA on the +12v and +5v rails, respectively. The Raptor is 9.75W: 430mA and 925mA on +12v and +5v, respectively. At a worst case, with all 5 drives reading and writing at the same time AND burning cd to cd (are you crazy? 😛) you'd be drawing 134 watts or so with the drives.

I think you'll be fine, especially with an Enermax 350w.
Click to expand...

I guess I am crazy. Or just not as informed maybe?

I was using figures of:

2.5A per HDD - 2.5 x 12 = 30W x 5 = 150W
1.5A per optical - 1.5 x 12 = 18W x 2 = 36W
0.25A per Fan - .25A x 12 = 3W x 2 = 6W
Total (assuming they are all running at the same time) = 192W

Maybe my estimates of power usage are too high?

Some 350W power supplies supply less than 15Amps on the 12V rail so that would be 180W total. Granted, it isn't very likely that all these devices would be running at the same time but I'd rather have too much than not enough.
Click to expand...

Different drives draw from the rails differently. The Raptor only uses 430mA on the +12v rail, but uses 925mA on the +5v. The WD800JB draws a lot more from the +12v rail. 2.2A in fact! When in doubt, consult the manufacturer's specs on their site. It's always nice to have headroom, but a lot of people (this isn't directed at you) think they need a big 500w PSU to power a single cpu and 3 harddrives.
rolleye.gif
Click to expand...

No, I'm running both of my systems on 350W power supplies. I have 1 HDD (sometimes 2) and two optical drives in each along with a Zip and FDD in my main system. I didn't go to that length to hunt for the specs on the individual drives. Only used estimates based on research I did on other systems for someone else.

12A on 12V rail, that's only 144W (assuming your PS is actually giving you 12V), I would recommend upgrading your PS.
 
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