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5750 on a 420W psu

Last response: in Components
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October 9, 2010 11:01:16 AM

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/...

^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

More about : 5750 420w psu

a c 694 ) Power supply
a c 1363 U Graphics card
October 9, 2010 12:45:12 PM

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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a b ) Power supply
October 9, 2010 4:24:24 PM

lol. 12ghz cpu. wtf? its a typical generic pc, lousy power supply, and a trial os. build your own!
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October 10, 2010 2:06:44 AM

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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October 10, 2010 2:13:31 AM

rolli59 said:
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.


So I would be better off buying the 550W PSU?
That would run the GTS250 fine right?
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a c 694 ) Power supply
a c 1363 U Graphics card
October 10, 2010 2:50:25 AM

Yes a reasonable quality 550 will the GTS250 needs minimum of 24amps on the combined +12 volt rails.
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October 10, 2010 2:55:07 AM

rolli59 said:
Yes a reasonable quality 550 will the GTS250 needs minimum of 24amps on the combined +12 volt rails.

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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a c 694 ) Power supply
a c 1363 U Graphics card
October 10, 2010 2:58:09 AM

It will probably run the HD5750 since it is a very power efficient card. Don't be surprised if you experience some instability though.
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October 10, 2010 3:07:13 AM

rolli59 said:
It will probably run the HD5750 since it is a very power efficient card. Don't be surprised if you experience some instability though.


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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a c 694 ) Power supply
a c 1363 U Graphics card
October 10, 2010 3:12:48 AM

The HD5770 and 955 is the better option! 955 easily overclocks to the level of 965.
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a b ) Power supply
October 10, 2010 3:16:37 AM

acbel is hit-and-miss. do you know what brand the other 550wis?
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October 10, 2010 3:20:45 AM

shovenose said:
acbel is hit-and-miss. do you know what brand the other 550wis?

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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October 10, 2010 4:43:22 AM

bump!!!!!!!!!!!!!
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October 10, 2010 4:59:32 AM

^That makes me real happy.
Guess Imma buy that 550W PsU atleast, maybe even the 650 W - , -
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a b ) Power supply
October 10, 2010 7:18:38 AM

Quote:
CPU speed: 12 GHz



Wtf???


I want that computer if those clock speeds are real :lol: 
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a b ) Power supply
October 10, 2010 12:40:45 PM

i have a better idea. buy the computer with the cheapest psu, then when you get it, swap it out for a unit you want. not some unknown generic crap. so im saying buy a corsair or something,
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!