Is my PSU good enough for this PC

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dss007

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this is what i've got right now -

AMD Ryzen 3 1300x CPU

msi - A320m Pro VD/S Motherboard

Corsair 8 GB DDR4 3000 mhz RAM

500 GB Seagate 7.2K RPM SATA HDD

ZOTAC GT 610 2 GB DDR3 GPU

A "450W" PSU (description below)

A case that i got for around 8 USD

Here's what is written on the PSU :

AC INPUT : 230V/4A/50Hz

DC Output :

+5V : 29A
+12V : 18A
+3.3V : 30A
-12V : 0.5A
+5VSB : 2A

at the end a note -> "(3.3V & 5V=85W MAX.) total o/p shall not continuously exceed 200w"

The million dollar question is "Can i use a GTX 750 ti without a bomb blast in my house?"
I am very tight on budget, i've already ordered it too from aliexpress, btw the card ordered does not have any 6 pin connectors *sigh* (neither does the PSU have a 6 pin cable... lol)

Kindly give me you opinion guys!
 
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Eximo
I would not be trusting that power supply now myself. It could fail with grace or take out all of your equipment. This is why it is recommended to never skimp on the power supply.

The 750Ti is going to push that power supply to the limit if you start gaming on it. One of the biggest problems with low end power supplies is that they are rated at unrealistic temperatures of 25C, once it starts heating up its performance gets worse. If you are lucky it will just kill the power and be an unexpected power loss to the computer. If you are unlucky it will either blow up or cause a fire when overloaded.

There is also the matter of unbalanced loading on older power supplies. High output from 12V only can cause odd behavior on the other...
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Eximo

Eximo

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That is basically a 200W power supply by today's standards. No I would not use it, it was designed for a different era where you needed large amounts of 5V and 3.3V. Contemporary systems run almost exclusively on 12V.

A general system build, without fans, states that it would be around 180W, so within a few percent of the continuous rating. It would likely fail within a few months if not immediately.

You should have purchased a B350 chipset motherboard as well.
 
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geofelt

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The power you need is largely gated by the graphics card.
The GT610 runs on slot power only,(75w) so you should be OK.
The GTX750ti would also be ok, even a GTX1050ti might be ok

Perhaps more important is the quality of the psu.
Do you have a make/model of the psu?
About the only good psu that comes in a case will be from antec.
The danger of a cheap psu is that it might damage other parts if it fails under load.
 
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Eximo

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They gave the rating, 200W continuous, when it was new. Adding in the GTX750Ti and it would pop almost assuredly. And I wouldn't trust it to have proper failure conditions. Way too much to risk.
 
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dss007

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Here it is - http://www.intex.in/it-accessories/smps/smps-techno-450-204pin-sata-2

 
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dss007

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The difference in the price of B350 was comparatively much higher, no cheap B350's were available .
 
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geofelt

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I really think you should change out that psu for a top quality unit.

The specs say 18a on the +12v rails. That translates to 216 w(18 x 12)
A pcie x16 slot can deliver a max of 75w and the cpu is a 65w tdp chip.
Those are the main uses for 12v.
The psu is an older unit with 3.5 and 5v as the primary power, a usage from much older gen processors.

Then, also, can you trust a cheap psu to deliver advertised power?
Will it deliver advertised power inside a case where it is hotter?
Or has this unit deteriorated over time?

The more I think about it, while the unit may work, spend the bucks and be safe.
Buy a tier 1/2 unit from a list such as this:
https://linustechtips.com/main/topic/631048-psu-tier-list-updated/

Seasonic is always good.
buy 450-550w to permit a future graphics card upgrade.
A psu will only use the power demanded of it, regardless of the max capability.
 
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dss007

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Thank you so very much for all the information and suggestions, now can you please help me on one last thing i.e. whether i should connect the 750 ti to my PC as soon as i get it, or NOT? Can it damage my mobo or CPU or RAM in any way. Or is the PSU only gonna die, if something F's up? Please help me with this final suggestion. I really cannot consider getting a PSU right now, as the prices are terrible here in INDIA.
 
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Eximo

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I would not be trusting that power supply now myself. It could fail with grace or take out all of your equipment. This is why it is recommended to never skimp on the power supply.

The 750Ti is going to push that power supply to the limit if you start gaming on it. One of the biggest problems with low end power supplies is that they are rated at unrealistic temperatures of 25C, once it starts heating up its performance gets worse. If you are lucky it will just kill the power and be an unexpected power loss to the computer. If you are unlucky it will either blow up or cause a fire when overloaded.

There is also the matter of unbalanced loading on older power supplies. High output from 12V only can cause odd behavior on the other voltages. This is known as Cross Loading. Those supplies were intended for older systems that had large power draws on 3.3 and 5V to run drives and other features on old motherboards. When you run a high wattage through only one of the rails, the regulation on the others starts creating large ripples that could damage things or cause instability.
 
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