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Correct Form Factor

Z

zschweiler

n00b
Joined
Sep 14, 2015
Messages
5
So i need to upgrade the PSU on my rig and wanted to make sure i wound up with the right form factor.

Can i switch this out for a modular ATX unit?

My PSU:

20151021-3_-_Lenovo_45J9431_Lite-On_PS-5281-02VA-ROHS_2.jpg



A description:


http://www.ctsestore.com/ibm-lenovo-thinkcentre-280w-ps-5281-02va-rohs-45j9433-45j9431-5498-tower


Proposed PSU:

http://www.newegg.com/Product/Product.aspx?Item=N82E16817182133




Would that work?
 
You need to up the wattage to support a new GPU or something?

I mean, if you have space in the case it should fit, yeah. Doesn't look like the old supply had anything weird, no non-standard connectors or anything.
 
Yeah, i need to up the wattage to support a w7000.

From a space standpoint, are all ATX Mobo's the same?
 
I mean space in the case itself. Like, make sure that since the new supply is longer than the old one it won't interfere with anything. EDIT: Actually looks like they're similar size-wise. That said, 750 watts is crazy overkill for what you're doing. 450 or 500 would probably be plenty.
 
Well thanks for all your help man, much appreciated.

One last thing, though.

The PSU reccomendation listed on the AMD website is like 650W.
https://www.sapphirepgs.com/productdetail.asp?IDno=18&lang=eng


I figured i'd play it safe and/or future proof this thing for relatively little cost (40 after rebate).

Is there a drawback to upping the PSU wattage so much?

Also, is the 450/500 vs 650w based on AMD just being particularly conservative in their recc?
 
Yeah, they tend to overstate power requirements cause they don't know what else you have in the system (is it a server with 12 harddrives and a million fans? etc.) or if the "500w" PSU that was bundled with a case is really a 300w with a new sticker on the side that's going to pop if you ask it to make even half of that.

So far as having "too much" PSU, there's no huge downside. Most PSUs are most efficient at around 60-70% load, so if you get something rated for like 1000w and run a 500w max draw system with it, you're going to end up on the low end of its efficiency curve -- it'll actually draw more power from the wall to produce that 500w DC than a properly rated (say 600/650w) PSU would. Is it a huge difference? Nah.

I personally tend to over-build my systems just in case I start adding more stuff. On the other hand, I realize it's not strictly necessary -- my old 1000w PSU died and I replaced it with a 750w, then got new GPUs that use more power (980Tis) and it's fine.

For $40 though? Go ahead.
 
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