Question Changing PSU, which will fit better?

Sep 25, 2020
19
3
15
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Hello, I'm recently having some issues on my Desktop suddenly restarting (something that looks a power loss) I believe the problem could be my PSU - currently is a thermaltake smart series 500W. Well I'm a total layman on PSUs so I'm reaching here with some options I found and ask your help.
My currently setting is:
cpu: i7-7700k
GPU: gtx 1070
Moba: H110M-CS
RAM: 16GB DDR4 2400mhz (2 viper slots of 8 each)
HD: sata 500gb

That said I've been looking some models. Since Im from Brazil not everything is available here, but among these options will be nice to know if any can suit me:

Models I'm looking here:
Corsair CX650M
Seasonic A12 SSR-700RA
Corsair Semi Modular CX550M
Seasonic Semi modular Focus GM-550
Corsair RM550X Modular

Any inputs here I'll appreciate!

PS.: If you have any other model I should look for, Ill try to see if there are available Brazil
 
in terms of quality/performance:

Corsair RMx > Seasonic GM > Corsair CXM. the Seasonic A12 series I admit to know nothing about. doesn't seem to be a series available in the EU. which usually isn't a good sign.

I'd go for either the RM550X or the Focus GM-550. the RMx is a wee bit better but usually much more expensive. So I'd probably opt for the GM-550. If they're (almost) the same price the RMx.
 
Reactions: JoBalz and Stricks1
Sep 25, 2020
19
3
15
0
in terms of quality/performance:

Corsair RMx > Seasonic GM > Corsair CXM. the Seasonic A12 series I admit to know nothing about. doesn't seem to be a series available in the EU. which usually isn't a good sign.

I'd go for either the RM550X or the Focus GM-550. the RMx is a wee bit better but usually much more expensive. So I'd probably opt for the GM-550. If they're (almost) the same price the RMx.
Thank you! I will probably go with the RM550x since its just a little bit expensive than the Focus GM-550 here.
about the 550W it should be more than enought for my rig specifications right?

Thank you for the support Isokolon, I appreciate it!
 
Reactions: JoBalz
Your power needs are mostly gated by your graphics card.
Here is a handy chart:
http://www.realhardtechx.com/index_archivos/Page362.htm
550w is fine for a GTX1070.

I have no problem overprovisioning a PSU a bit. Say 20%.
It will allow for a stronger future graphics card upgrade.
It will run cooler, quieter, and more efficiently in the middle third of it's range.
A PSU will only use the wattage demanded of it, regardless of it's max capability.

650 or 750w may not cost much more.
Here is the seasonic focus GM-550:
https://www.newegg.com/seasonic-focus-550-gold-ssr-550fm-550w/p/N82E16817151203
Note that the 650w version costs less, and the 750w version is only $7 more.
Then, there is the GX-550 w unit that costs even less and has a 10 vs. 7 year warranty.
https://www.newegg.com/seasonic-focus-plus-550-gold-ssr-550fx-550w/p/N82E16817151189

My point is that it pays to shop.
It seems to me that Seasonic has great sales at this time of year.
 
Last edited:
Reactions: Stricks1
Sep 25, 2020
19
3
15
0
Your power needs are mostly gated by your graphics card.
Here is a handy chart:
http://www.realhardtechx.com/index_archivos/Page362.htm
550w is fine for a GTX1070.

I have no problem overprovisioning a PSU a bit. Say 20%.
It will allow for a stronger future graphics card upgrade.
It will run cooler, quieter, and more efficiently in the middle third of it's range.
A PSU will only use the wattage demanded of it, regardless of it's max capability.

650 or 750w may not cost much more.
Here is the seasonic focus GM-550:
https://www.newegg.com/seasonic-focus-550-gold-ssr-550fm-550w/p/N82E16817151203
Note that the 650w version costs less, and the 750w version is only $7 more.
Then, there is the GX-550 w unit that costs even less and has a 10 vs. 7 year warranty.
https://www.newegg.com/seasonic-focus-plus-550-gold-ssr-550fx-550w/p/N82E16817151189

My point is that it pays to shop.
It seems to me that Seasonic has great sales at this time of year.
Thanks for the advices! The problem I have is that living in Brazil I dont have access of most of these models, I dont find anyone selling a seasonic focus other than that GM-550.

Some other models I found, that have almost similar price with high voltage are like these:
Corsair CX750M (same price of the seasonic focus GM-550)
or
EVGA 700GD (same price of the RM550X)

would you advocate over any of these instead of Focus GM-550 or RM550X?

That thermaltake 500 smart series that I had handled well for 3 years. I really need a PSU that I can count on for at least 5 next years when I plan to move out of Brazil ( I work on this computer as software developer) then after this will be easier to have access to better hardware outside. The problem of shipping from these websites you show me, is that I need to pay taxes when it reaches Brazil, and it often gets to me at 1.8x to 2x the original price after shipping and taxes!

Thanks again for the help, i really appreciate it
 

JoBalz

Honorable
Sep 1, 2014
48
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10,545
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in terms of quality/performance:

Corsair RMx > Seasonic GM > Corsair CXM. the Seasonic A12 series I admit to know nothing about. doesn't seem to be a series available in the EU. which usually isn't a good sign.

I'd go for either the RM550X or the Focus GM-550. the RMx is a wee bit better but usually much more expensive. So I'd probably opt for the GM-550. If they're (almost) the same price the RMx.
I use the Seasonic Focus one one of my systems (my main rig has a Seasonic Prime Ultra Gold PSU). The Focus generally gets great reviews, so that's a pretty safe option. And as others have said, those Corsairs outlined above are also good models. And if you can find a 650W Gold for only a little more money, it will indeed give you additional headroom for future upgrades, or could even be transferred to a new build.
 

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