Forum Thread

Will a 300 watt ATX power supply work in any desktop?

Mermaid 2,179 910 October 11, 2015 at 09:21 AM
I'm dying to install my new Slickdeal Surfboard modem and Archer router and of course my desktop is dead!! Mad

According to a little Youtube paperclip jump test I performed on my 6 year old Slickdeal Gateway DX4200-09, my 300 watt power supply is dead as a doornail.

I'd like to run up to Fry's and buy a new one (not slick, I know Frown ) but don't trust a sales rep to tell me what I need.

The dead power supply is a FSP300-60THN - 300 Watt ATX Power Supply /
Product Number FSP300-60THN which is not made anymore.

Can I just buy any 300 watt power supply for a desktop and it will work?

THANK YOU SO MUCH! hug

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#2
"In any desktop" - no, there are some that need more power, some that use smaller form factors, some that need longer cables, and some that need more/different connectors

"In your desktop" - very likely, but I don't know of any "good" 300W PSU's that are being made these days - I would suggest you look atthis list [newegg.com] and get one of the 350-450W versions that's tier 3 or above (Antec basiq [frys.com] is $30 at fry's if you need it today, otherwise I have seen decent ones go for $20-$25 on SD)

the one thing I would check is that it physically has all the connectors your old one was using - the chances are pretty good it will have all of them and more, but some of them are being phased out (i.e. molex for hard drives/cd drivers, 20-pin motherboard connectors)

also, if it has a switch on the back to change from 120v to 240v (or doesn't work at 240v), avoid it - it's old technology

if you want a step up, also look for an 80+ rating (bronze, silver, etc. ) - these will also be more efficient as opposed to just working

edit: the URL seems to be broken.. remove the space https: //community.newegg.com/eggxpert/computer_hardware/f/135081/t/45344.aspx
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Last edited by slapshot136 October 11, 2015 at 02:13 PM
#3
I'm a little worried about the size of the PSU you quoted. If the image here: http://www.replacepowersupply.com...0thn-.html is correct, this is shorter than a standard ATX power supply. A standard ATX PSU can be 5-6" deep, and required another couple inches for clearance for the cables. The height and width appear correct for an ATX PSU.

How much room is left at the top of your case for the PSU?

It's also worth mentioning that you don't need specifically a 300W replacement PSU, you just need something that is at least 300W.

Edit: looking at some other images of the original, it appears as if it was a normal sized PSU and the linked one above may just be smaller than normal replacement. Be sure to measure though, just to make sure than you have enough room in your case. ATX power supplies can vary in depth. Slapshot also makes a very good point about making sure that any new PSU still has all the old connectors required by a 6 year old computer.
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Last edited by quotidian October 11, 2015 at 09:45 AM
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#4
I really appreciate y'all taking the time to reply. heart

Would this power supply work? http://www.frys.com/product/46598...IN_RSLT_PG

It looks like it's a little smaller but has the same connectors as the original one. Thank you!!
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#5
Quote from Mermaid View Post :
I really appreciate y'all taking the time to reply. heart

Would this power supply work? http://www.frys.com/product/46598...IN_RSLT_PG

It looks like it's a little smaller but has the same connectors as the original one. Thank you!!
probably (for a short time unless it's DOA), but I would avoid it - seriously try and find ANY decent reviews of a raidmax unit..
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#6
PSU's can be tricky to buy if you're trying to save money. Not only are weak (low wattage) PSU's a bad choice for potential future upgrades do your system, cheap PSU's also tend to have such poor power efficiency that despite quoting 300W, they may actually struggle to consistently provide 250W or even less.

As such, if you're looking at cheap PSU's, you should get plenty of overhead to make sure the system gets enough power.

Personally - I think people neglect PSU's way too much.

Logically, it's the most important part of any computer system, because it supplies power to every part. And if the PSU is weak or of poor quality you risk the entire system underperforming or even getting damaged, as cheap, low quality PSU's are less well protected against power surges and such.

I suggest investing a bit more money and getting a high quality PSU that will last you a long time and keep your system well powered and safe.

I'd check sites like this: http://www.hardwaresecrets.com/category/power/

Find products in your price range and quality.
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#7
It's a six-year-old system. Upgrades aren't high on the priority list, I'd guess.

I'd also recommend the previously mentioned Antec Basiq [frys.com] as a good quality power supply and a relative bargain.
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#8
Bottom line, no. Connectors and voltage requirements have changed over the years.... a new PSU might not even have the required connectors and outputs for a legacy system. Then there's it fitting in the chassis - especially with OEM stuff who tend to use customized parts that are not made to a specific standard - this was especially true a few years back and prior.
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#9
Not looking to upgrade, just Band-Aid until a decent BF deal come along on a new desktop.
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#10
Quote from Dr. J View Post :
Bottom line, no. Connectors and voltage requirements have changed over the years.... a new PSU might not even have the required connectors and outputs for a legacy system. Then there's it fitting in the chassis - especially with OEM stuff who tend to use customized parts that are not made to a specific standard - this was especially true a few years back and prior.
I think the question of will any 300 watt PSU work in ANY desktop has already been answered with a definitive NO.

Power connectors for some things have changed over the years and OEM parts can be odd sizes, but as long as you have a ruler and take the time to read the manual carefully it isn't that word to figure out if a PSU will work. Make a list of the locations of all the power supply connections and the number of pins each has. Pick up a PSU that has good ratings/reviews from a good brand and try it, if it doesn't fit return it. If there's something the old psu connected to the new one doesn't see if any kind of adapter exists. Connectors have been designed well enough through various ATX design changes that you won't be able to connect anything in a matter that's a problem.
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Last edited by jkee October 12, 2015 at 02:49 PM
#11
There have been many variations of the ATX spec over the years. Your best bet on an old system is to take the dead supply with you and compare them side-by-side. More info here: https://en.wikipedia.org/wiki/ATX..._revisions
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#12
The revision in Power Supply has changed over time. However, the newer PSU should work fine as long as it has 20+4pin. The older system might uses 20pin. Make sure there is enough molex (4-pin/peripheral) plug to power your harddrive, DVD, and more.

The newer PSU has less molex plug but more SATA power plug. As long as you make extra sure, then it should work. In case the dimension doesnt fit, you can always open the case and not install the PSU into the case framework since you suggested it is a band-aid fix.

The PSU you suggested is good enough. Although I would recommend better brand like corsair, thermaltek, coolmaster, coolmax and more.This helps to prolong the PSU life cycle. Trust me on this, had burn a fair share of off-brand PSU.
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#13
DO NOT buy raidmax garbage.
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#14
Take the old power supply with you and trust the advise the sales guy or girl gives you. Let them confirm the connectors and power range. Remember they do want to help you and at Fry's they do not earn a commission on sales.

I would recommend a somewhat more powerful power supply of say 350 to 400 Watts.

Think about asking friends if they have an old computer in the closet or in the garage. Something they may be willing to give you for free. Its possible that you could get something for free that would be a serious upgrade from your older PC. As an example I have 5 Dell's with Win 2000 OS in my garage. I'm going to part them out to recycle but I wouldn't mind if I only had 4 of them.

You might want to
search
[bing.com] for used or refurbished computers on Bing or Google in your home town. Generally even used computers would come with a 90 day warranty & you can get one at a seriously discounted price.
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#15
Thanks so much for all of the very thoughtful replies and help. Band-aid in place and deal alert set for a new desktop! <3
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