Graphics Cards on 255W PSU?

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bojanumicevic12

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Aug 18, 2017
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Hy, will Graphics card like Amd Radeon R7 250, Gtx 750 ti or Amd Radeon HD 7700 work on 255W PSU? Pc specs are:
4GB DDR3
Intel Pentium Dual core 3,2Ghz
Amd Radeon HD 6450
Thanks for reply
 
Solution
Barty1884
On a 225W PSU, your options are really, really limited.

The 6450 currently in there is a 27W PSU, and I wouldn't look to use anything that draws much more power - as that PSU is likely quite a few years old, on top of being a low wattage unit to begin with.

Personally, I wouldn't look beyond a GTX 1030.
PCPartPicker part list / Price breakdown by merchant

Video Card: MSI - GeForce GT 1030 2GB AERO ITX OC Video Card ($68.98 @ Newegg)
Total: $68.98
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-08-18 10:56 EDT-0400

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Barty1884

Barty1884

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On a 225W PSU, your options are really, really limited.

The 6450 currently in there is a 27W PSU, and I wouldn't look to use anything that draws much more power - as that PSU is likely quite a few years old, on top of being a low wattage unit to begin with.

Personally, I wouldn't look beyond a GTX 1030.
PCPartPicker part list / Price breakdown by merchant

Video Card: MSI - GeForce GT 1030 2GB AERO ITX OC Video Card ($68.98 @ Newegg)
Total: $68.98
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-08-18 10:56 EDT-0400

 
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Solution
Math Geek

Math Geek

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you likely do not have a 6-pin power connection so any card that does not need one like many 750ti models would work fine.

as would the newer 1050 and 1050ti models. most of those do not need any extra power as well. rx 460 also falls under that ame idea. should be plenty of options for you
 
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bojanumicevic12

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dell power supply h255pd 00
 
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bojanumicevic12

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So GTX 1030 Will work fine?

 
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Barty1884

Barty1884

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Not all the time, they vary in quality in product lines, and even model to model.

The Xeon server-type rigs usually have a good quality, (relatively) low wattage PSU that can actually do 100% load sustained.
That PSU (when new) could do 16A on the 12V rail.... supposedly.
81a31%2B7ShSL._SL1500_.jpg


So that low "255W" PSU, should be viewed in modern terms as a 190W PSU max.



I wouldn't run a 750TI or anything else in the 75W potential power draw.
Based on the (limited info) 3.2GHz Pentium, DDR3, it could be anything from Wolfdale through Haswell..... ~53W TDP Chips.
Add as "safe" buffer of 50W for the balance of the rig, and considering anywhere from 3-7 years degration of the PSU, I don't think a 75W GPU is going to be particularly wise.

53W CPU + 50W balance + 30W GPU = 133W. That would be more than enough power draw on a 190W PSU that's been in use for 3+ years (minimum).

Just my $0.02.

I'd stick with a GTX 1030 as a maximum.
 
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Barty1884

Barty1884

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Even a 60W 750TI would be a bit of a stretch IMO.
They are available from NewEgg though for much, much more reasonable prices.
A 4GB 750TI @ 60W TDP.
PCPartPicker part list / Price breakdown by merchant

Video Card: Gigabyte - GeForce GTX 750 Ti 4GB Video Card ($118.98 @ Newegg)
Total: $118.98
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-08-18 12:24 EDT-0400

BUT, that's 50+53+60 = 163W on a PSU that could only "do" 192W when new. Now, the chances of that setup being able to run the GPU @ 100% load are pretty slim....... but that would then beg the question as to why bother?

A 1030 seems like the most straightforward and well balanced pairing.
 
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