5750 on a 420W psu

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vibhas

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Hi, I'm from new zealand and im looking at a PC, and want to ask the seller to upgrade the graphics card to an hd5750.

http://www.trademe.co.nz/Computers/Desktops/No-monitor/auction-322369555.htm

^Those are the specs:

4gb DDr3 1333 ram
5750gfx (upgrading from gt240) < apparently 86W at load.
AMD phenom II 955. (Apparently 216W at load).

I wanna make sure that it obviously doesn't blow up, and im unsure what a realistic 'load' is possibly under todays games, although i play nothing demanding at the moment i may in the future.

I've asked the seller how many amps it is, waiting for response (Answer is displayed at bottom of page).

currently system is @ $810 (He offered it for that maybe lower) with a GT240 512mb / ddr3. I think its worth upgrading to 5750.
If it can run on the same 420W psu it it'll cost me total $899 for the 5750
5750 with 550W psu will cost me $959 and GTS 250 will cost me $929 with 550W psu.
Note NZD, pc stuff is a lil more expensive here, and the exchange rate is $75US = $100NZ

 
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rolli59

rolli59

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That PSU is rated 420watt peak 350 watt average and is of low quality. It probably would run a HD5750 but having a marginal PSU leaves the change that it will go out and take other things with it. You would be better of with a quality around 400watt PSU from Corsair or Antec to name a couple.
 
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vibhas

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In New Zealand the suppliers know that it ain't 3.2x4 Ghz but some casual listers don't and as consumer's may not know, they may buy a '6.2Ghz' instead of a quad core cause the QC will have less than half the Ghz in their eyes.

If I built my own, this is what would happen.

~ I've checked on pricespy which gives the cheapest price for each part.

$220 for the 5750, 260 for the 5770.
$230 for same processor. = total 450
$120 for similiar ram = total 570
$200 for a good case and PSU = total 770
$ for hard drive, mother board, fans etc will surely lift it to above $1000.

Currently he's selling the 5750 and same parts for 900 and I struggled to fit my graphics card cause apparently one of the slots was screwed, building a PC will surely try my parents >.>.

I already have windows vista Ultimate 32 bit, may consider Windows 7 64bit, so trial OS works in my favour.

Please keep the replies coming!
 
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vibhas

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So I would be better off buying the 550W PSU?
That would run the GTS250 fine right?
 
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vibhas

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Any ideas on the 5750 on the 420W?
I' m more concerned about that at the moment to be honest since ill only think about the 250 if the 5750 cant go on the 420W PSU of i am told, low quality.
 
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vibhas

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so i should buy the 550W PSU and perhaps jump to the 5770 for $1000 with the 955 @ 3.2 ghz
or go with an acbel 510W PSU w/ 5750 and a 965 BE @ 3.4 Ghz? (For $1040)
 
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vibhas

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well ive asked the seller that awaiting reply, but shouldnt a 550W even no brand, comfortably support the 5770 and 955?

The seller claims his supplier said the 420W can run the system even with a 5770 so 5750 should be no probs, i need to make sure however. I'll update this thread as soon as i get the responses, but really, 5770 w/ 550 W PSU and a 955 Should be fine aye?
 
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