is my psu can handle when i overclock my gpu?

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Axl Gil

Axl Gil

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hi guys , im planning to overclock my card now "HIS r9 270 " but im afraid to increase the powerlimit because my psu is coolermaster elite v2 500w ,so can you tell me if my psu can handle overclocking it? pls help thanks ")

btw my rig is
core i3 4130
4gb ddr3
500gb hdd
HIS r9 270 (non X)
cooler master elite v2 500w
 
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Andrew Buck


You are definitely fine.
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Andrew Buck

Andrew Buck

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Please list the rest of your specs.
 
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Axl Gil

Axl Gil

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core i3 4130
4gb ddr3
500gb hdd
HIS r9 270 (non X)
cooler master elite v2 500w
fractal core 1000
 
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JackNaylorPE

JackNaylorPE

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Only item of concern here is the 270

http://www.guru3d.com/articles_pages/amd_radeon_r9_270_review,8.html

This is Guru3D's generic power supply recommendation for the R7 and R9 series:

AMD R7 260X - On your average system the card requires you to have a 450 Watt power supply unit.
AMD R7 260X Crossfire - On your average system the cards require you to have a 650 Watt power supply unit as minimum.

AMD R9 270 - On your average system the card requires you to have a 500 Watt power supply unit.
AMD R9 270 Crossfire - On your average system the cards require you to have a 700 Watt power supply unit as minimum.

AMD R9 270X - On your average system the card requires you to have a 500 Watt power supply unit.
AMD R9 270X Crossfire - On your average system the cards require you to have a 700 Watt power supply unit as minimum.

AMD R9 280X - On your average system the card requires you to have a 550 Watt power supply unit.
AMD R9 280X Crossfire - On your average system the cards require you to have a 750 Watt power supply unit as minimum.

If you are going to overclock GPU or processor, then we do recommend you purchase something with some more stamina.
Click to expand...

However, keep in mind that in that test, they only drew 254 watts of power. The issue is not how many 2 watt fans, USB's or 5 watt HDs you have, it's the headroom you have between that 254 and the 500 and what quality voltage it spits out when it starts getting higher.

I think your concern is justified, especially because 1) It's a Coolermaster and 2) it sounds like you have had it a while and capacitor aging may have reduced it's top wattage by 15% or more. Can you get ya hands on a kil-o-watt meter.

http://www.amazon.com/P3-International-P4460-Electricity-Monitor/dp/B000RGF29Q

Plug ya PC into that and you can see how many watts it draws. If was a higher quality PSU I'd have no concern for a moderate OC....thou to be frank, the R9 series cards do not overclock all that much given that they are already aggressively overclocked in the box so it's not like your system will see a much bigger increase than it will see with the factory OC.
 
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Andrew Buck

Andrew Buck

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You are definitely fine.
 
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Axl Gil

Axl Gil

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hmm so what do you mean ? is psu can handle overclocking my card?
 
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Andrew Buck

Andrew Buck

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500 Watt PSU, which he has. My build only uses around 600 Watts fully overclocked (4770K @ 4.6 GHz @ 1.46 V (BSODS after 4.2 without insane voltages) and my 2 R9 270x's at 1180/1525 @ 1.206 V along with all of my other components) and less than 500 at full load at my normal setup (signature).
 
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JackNaylorPE

JackNaylorPE

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Three things ....

1. You are assuming that a PSU "rated as" (not tested as) is capable of actually safely discharging 500 watts .... that is quite often not the case.

2. As a PSU ages, it loses capacity due to a phenomenon known as "capacitor aging".....with high end components, a PSU might show a 15% drop over it's lifetime ..... a budget level PSU could easily exceed 30%.

Check out this PSU calculator and look in lower right .... the range appropriate from the best PSUs tot he worst is 10-50%.....that means the rated capacity of the unit should be reduced by that amount.
http://extreme.outervision.com/psucalculatorlite.jsp

3. Yes, Guru 3D recommended a 500 watt PSU which has but ya gotta read the last line. ...... they went on to say.....

If you are going to overclock GPU or processor, then we do recommend you purchase something with some more stamina.
Click to expand...

Given that ....

1) The system will be overclocked.
2) The PSU is not what one would call a sturdy "enthusiast grade" PSU
3) I am concerned about capacitor aging if not now then as time goes on. .... certainly no Japanese caps in here.

Still, OTOH, the R9 series are just rebadged 7xxx series with an aggressive overclock.... as such, i do not expect the card will be able to remain stable and adequately cool at more than 10 % OC .... if it was a nVidia card rated for a 500 watt PSU, capable of 25% OC's then I'd be more worried. Not saying I wouldn't do it, just that I'd be careful.





 
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