would 450w psu enough for a HD5770

[pubbaa]

hello again

i was just going through hexus review on HD5770,seems the power consumption on the is low compared to HD4870 both in idle and in load...i have a hd3870 running on a 450w ,so would there be a problem not switching to a better psu if i buy a hd5770

[DeludedGuy]

As long as that 450w PSU is of good quality I would say its more than enough.

[pubbaa]

thanks for the info...much appreciated

[CAT-THE-FIFTH]

A decent 400W or 450W PSU will do the job.

[lego batman]

Yep what they said ^^. I'm running a 450w psu powering my overclocked 4870 and e5200.

[scaryjim]

Very few computers manage to pull more than ~ 300W - when Hexus tested 2 5770s in Crossfire their entire test system only pulled 266W fully loaded, so 450W is massive overkill for a single 5770

As other commenters have said though, that only stands up if the PSU is decent quality - if it's a cheap generic one bin it and get something like an Antec Earthwatts 380 (~ £30) or a decent modular...

[lozza21]

Hello there. right ive been doing a but of reasearch, and i wanted to know if my Galaxy mid tower ( i would put in link, but it wont let me ) Case including power supply-450W PSU would definately work, and is up to your " quality standards" as you guys have been talking about and also if you have higher watt PSU does it increase performance even though a lower one would still work... if you get me ?

Thanks very much people

[floppybootstomp]

Hello there. right ive been doing a but of reasearch, and i wanted to know if my Galaxy mid tower ( i would put in link, but it wont let me ) Case including power supply-450W PSU would definately work, and is up to your " quality standards" as you guys have been talking about and also if you have higher watt PSU does it increase performance even though a lower one would still work... if you get me ?

Thanks very much people

Your PSU is almost certainly not up to quality standard.

On the subject of PSU's in the past I favoured Antec, Tagan & Enermax.

As my experience of these things increases and I note that one Tagan 2 year old PSU crapped out on me (a review copy, ironically enough) and an Enermax less than three years old died and no less than 3 Antec 'Truepower' PSU's died in quick succession, ranging in age from 18 months to 3 years, I have revised my views.

I would now almost exclusively recommend Corsair/Seasonic with OCZ holding up the rear as a budget option. Antec PSU's are definitely on my crap list.

Still love their cases though.

I'd say the hell with the reviews, real experience speaks loudest.

And cheap PSU's is deffo a false economy.

[CAT-THE-FIFTH]

If you are looking at a 400W PSU the OCZ StealthXStream 400W which is made by CWT and the Corsair CX400W which is made by Seasonic are worth a look at and have good reviews:

http://www.hardwaresecrets.com/article/794

http://www.hardwaresecrets.com/article/750

Some of the new Antec PSUs are made by Delta Electronics which is one of the best OEMs so some of them are probably quite good.

[Pob255]

I would now almost exclusively recommend Corsair/Seasonic with OCZ holding up the rear as a budget option. Antec PSU's are definitely on my crap list.

Depends which Antec, as they use multiple OEMs to make their psu's
All the Earthwatts and Neo HE units are made by Seasonic.

I think some of the new True power trio's are made by Seasonic, of the current Antec line up I'd aviod the Basq range as they mght be cheap but they are under powered.

the "True power new" 750w is made by seasonic and highly rated by jonnyguru http://www.jonnyguru.com/modules.php...tory4&reid=140

[wHITEFINGER]

Well i have a xfx hd 5770 and currently powered by a CIT 750W and everything is fine until i decide and play games with it!

About 30 mins into to each game that i play the computer crashes with different results every-time
Crashes to white screen;
Crashes to Black screen
Crashes to black and white lines vertical along the screen;
crashes to desktop;
crashes to desktop and displays "Display driver crashed";
crashes then computer restarts.
i have pulled out all unnecessary hard drives and and dvd-rw, i have moved the card about, i have cleaned the system from fluff, i have re-installed drivers using that clean install program i have check the temps, updated me bios, and probably a few other stuff that i cant remember to hand.

This is a new system build and for the first month it was great, but im in the second month now!
I have decided that Iver the hd 5770 is broken
or that the CIT 750W isnt giving it enough juice
or its getting to hot at peak load!

i have decided to get a new PSU as when i was creating my new system i only had £500 to spend and the PSU was at the bottom of me list, so on delivery im waiting for the "XFX P1-850B-NLG9 Black Edition 850W Modular Power Supply (PSU)" witch just cost me £115 from scan.co.uk

Will keep you up to date if this resolves my problem

CPU Arch : 1 CPU - 4 Cores - 4 Threads
CPU PSN : AMD Athlon II X4 640 Processor
CPU EXT : MMX(+), 3DNow!(+), SSE (1, 2, 3, 4A), x86-64, AMD-V
CPUID : F.5.3 / Extended : 10.5
CPU Cache : L1 : 4 x 64 / 4 x 64 KB - L2 : 4 x 512 KB
Core : Propus (45 nm) / Stepping : BL-C3
Freq : 3010.34 MHz (200.69 * 15)
MB Brand : Asus
MB Model : Crosshair III Formula
NB : AMD 790FX rev 00
SB : AMD SB700 rev 00
GPU Type : Radeon HD 5770
GPU Clocks : Core 156 MHz / RAM 300 MHz
DirectX Version : 11.0
RAM : 4096 MB DDR3 Dual Channel
RAM Speed : 669 MHz (3:10) @ 9-9-9-24
Slot 1 : 2048MB (10700)
Slot 1 Manufacturer : Corsair
Slot 2 : 2048MB (10700)
Slot 2 Manufacturer : Corsair

[CAT-THE-FIFTH]

CiT PSUs are very poor quality and in most cases will not provide anywhere near their advertised power.

[floppybootstomp]

Depends which Antec, as they use multiple OEMs to make their psu's
All the Earthwatts and Neo HE units are made by Seasonic.

I think some of the new True power trio's are made by Seasonic, of the current Antec line up I'd aviod the Basq range as they mght be cheap but they are under powered.

the "True power new" 750w is made by seasonic and highly rated by jonnyguru http://www.jonnyguru.com/modules.php...tory4&reid=140

Interesting. Maybe I should reapraise Antec PSU's but once three PSU's labelled 'Antec' have died prematurely on me I figure I have good reason to boycott them, illogical though that may be.

I just received an e-mail telling me there had been a reply to this thread which I do believe I contributed to some twelve months ago, how odd

[scaryjim]

My truepower trio 650W is still chugging away nicely powering my Q6600 / 8800GTX combo, and has been doing for ~ 3 years now. Never had any trouble from it at all.