Tom's Hardware > Forum > CPU & Components > Power Supplies, PC Cases & Case Mods > [Help] Will 300W be enough for ...

[Help] Will 300W be enough for ...

Forum CPU & Components : Power Supplies, PC Cases & Case Mods - [Help] Will 300W be enough for ...

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shawn1211   12-10-2007 at 02:12:47 PM

Hi, I am currently running my:

Intel Core 2 Duo E6550,
GeForce8600GT 256MB 128-bit GDDR3,
Kingston 2GB DDR2 667 5300 Ram,
Western Digital 160GB Hard Drive
1 regular DVD RW
on GIGABYTE GA-G31MX-S2 LGA 775 Intel G31 Micro ATX Intel Motherboard with 480W Power Supply that came with my case.

I want to get a slim or micro ATX case but most cases only support up to 300W on PSU. I was wondering if it would be possible to run all those with regular 300W PSU that comes along with a case. For example, something like this http://www.directron.com/bt610t300bl.html.

If not, how much Watts or what kind of PSU would I need roughly?


Message edited by shawn1211 on 12-10-2007 at 02:14:28 PM
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jtt283   12-10-2007 at 02:30:12 PM
- 0 +

PSUs that come with cases are notorious for being cheap sparkers.
The Apevia X-QPACK2 SFF case will take a full-sized PSU; that's what I'm using.

------------------------------ There is ALWAYS a drone. Exactly where, or how many drones you will encounter may vary, but that there will be at least one will not.
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Crazywheels   12-10-2007 at 02:39:10 PM
- 0 +

i don't think 300 will be enough

Reply to Crazywheels
TrentB   12-10-2007 at 02:39:29 PM
- 0 +

From what I see on your list your are maxed out with a 300w PSU. And concur that you may see issues due to poor power on a rail and being so close to max on the PSU. I would go with a 400w or larger, I prefer PC Power & Cooling. Here is a link to one on Newegg: http://www.newegg.com/Product/Prod [...] 817703011. This one is 470w, if you go with a larger PSU you will be able to upgrade your PC without worrying about if the PSU can handle the load. Good luck on your build.

------------------------------ Whatever does not kill you makes you stronger.
 Reply to TrentB
evongugg   12-10-2007 at 02:42:01 PM
- 0 +

You need 15-17 amps on the 12v rails as a minimum. Please check the lable of the PSU.

Reply to evongugg
spongebob   12-10-2007 at 03:12:36 PM
- 0 +

eXtreme Power Supply Calculator: http://www.extreme.outervision.com/psucalculator.jsp

The free version doesn't cover rail counts or amps/rail, so look up the requirements of your components (the 8600 for sure) and, as evongugg said, check the PSU label.

------------------------------ Give a man a fish, and you'll have fed him for a day. Give a fish a man, and he'll eat for weeks.
 Reply to spongebob
jaguarskx   12-12-2007 at 05:31:12 AM
- 0 +

Yes, it should be possible to run it on a 300w PSU. Below are power consumptions for parts that are actually a little more powerful than what you have:

Estimated Power Consumption on 12V rail:
E6700 (stock)..............................................62w
nVidia 8600GTS...........................................47w
7200 Hard Drive...........................................14w
DVD Burner.................................................14w
2 80mm fans................................................8w

Total Max Power on 12v rail..........................145w
Total Max Amps..........................................12.1a

CPU Power Consumption Link

GPU Power Consumption Link

Remember the CPU and GPU are more powerful than what's in your system.

------------------------------ Q9450 |Corsair XMS 4GB DDR 800 | ABit IP35 Pro | HD 5850 | Audigy 2 | Seasonic S12 550 | Cooler Master Centurion 532 | NEC LCD2690WUXi and Planar PX2611w | WinXP

Peace on Earth by means of the destruction of all life on Earth.
 Reply to jaguarskx
psymanproductions   01-03-2008 at 08:52:44 PM
- 0 +

300w WILL be enough. i would how ever look into getting a better brand of psu because the ones that come with cases are known for being crap. they wont provide as much as they say they do and can cause problems with stability because of unstable voltages. even catch fire.... maybe?! (neva seen it for my self but heard about it)

Reply to psymanproductions
o1die   01-03-2008 at 09:24:44 PM
- 0 +

Another case you might check out is the thermaltake lanbox vf1000bws, listed on amazon.com for $115.


Message edited by o1die on 01-03-2008 at 09:32:40 PM
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