Could my HX620W PSU man up to 470 sli?

3t3P · 15 Jan 2011 at 17:15

http://www.guru3d.com/article/geforce-gtx-470-2-3-way-sli-review/23

there's still SOME margin there?

and good quality PSU's can do peaks over their rated capacities?

Do psu's shut down when overloaded or do parts start blowing up

Don't really want to spend £150 on a goldseries 850W...

from reading around I optimistically think my PSU would 'man up to it' lol

Gin0rm0 · 15 Jan 2011 at 17:23

Personally, I wouldn't risk it.

setter · 15 Jan 2011 at 17:28

I wouldnt risk it either, id be looking at 750w minimum, running sli'd 470's on a corsair hx 850w here.

Cleeecooo · 15 Jan 2011 at 17:32

750W min. But i'd get an 850w for a bit more

alex24 · 15 Jan 2011 at 17:34

It'd probably be OK, but in the PSU and high performance hardware world, 'probably' isn't really good enough.

At best however, it'd shorten its lifespan somewhat.

3t3P · 15 Jan 2011 at 17:43

I find PSU speccing a mine field.

compared to really objective results we have on so much else of our hardware, PSU speccing is of course 'get more for reserve' but not much else

i'm sure it would be fine but people cast doubt on it because it doesn't have a 200w reserve...

Puppetmaster · 15 Jan 2011 at 17:48

Im sure someone on here, i think his name is Roff? or something has an sli 470 setup with a similiar power supply. Cant really remember.

setter · 15 Jan 2011 at 17:59

Iirc, Rroff is using a 700w psu with 470 sli.

Rroff · 15 Jan 2011 at 18:24

Yeah using GTX470 SLI on a 700watt and I don't reccomend it - intensive benchmarks when overclocked push the PSU to the edge and I can't even look at furmarks when overclocked.

shadow_boxer · 15 Jan 2011 at 18:27

750W at the very least. 850W to give you a little head room I think.

robin66 · 15 Jan 2011 at 18:36

So would a 1000 watt psu be fine for tri sli? The peak on Guru states 794.

Sorry about hijacking the thread.

setter · 15 Jan 2011 at 18:42

Im still even a little wary on an 850w corsair hx, hence i dont have my cards overclocked beyond 750mhz core for anything but quick bench runs.

robin66 · 15 Jan 2011 at 20:15

I bought a third card from overclockers the other day. Did a bit of home work before doing so, and the corsair and sli zone site think 3 470's is fine.

Running a HX1000 and dropped my overclock from 760 core on two cards to 675 on all 3. As I don't want to push the psu to hard and have it melt down on me.

I'm running a i7 920 at 4ghz also.

3t3P · 15 Jan 2011 at 20:56

they should build PSU's with integrated watt meters to save us all hassle

on another note, thats a scary amount of power haha 700W+ on a PC!!!

seems ill need an AX850...

alex24 · 15 Jan 2011 at 21:01

Those new ADATA PSUs OcUK have change the colour of their LEDs according to load I think.

robin66 · 15 Jan 2011 at 21:18

3t3P said:
they should build PSU's with integrated watt meters to save us all hassle

on another note, thats a scary amount of power haha 700W+ on a PC!!!

seems ill need an AX850...

Jeantech made a psu that had a wattage meter on it.

chaparral · 15 Jan 2011 at 21:43

740watts

3t3P · 15 Jan 2011 at 22:04

damn thats a lot of power

who here would pay £10 for a PSU that via software showed wattage use?

It would be cool I think

Rroff · 15 Jan 2011 at 22:06

chaparral said:
740watts

Fortunatly my LGA775 setup uses ~100watt less than the setup they used for that.

robin66 said:
Jeantech made a psu that had a wattage meter on it.

3t3P said:
damn thats a lot of power

who here would pay £10 for a PSU that via software showed wattage use?

It would be cool I think

I believe one of the gigabyte lines (odin?) had the ability to monitor wattage, etc. in real time, sadly didn't seem to be on the market long.

http://www.bit-tech.net/hardware/psus/2007/10/15/gigabyte_odin_gt_800w_psu/4

3t3P · 15 Jan 2011 at 22:14

did a coolermaster PSU also do that? had a thing that went in a bay at the front and showed with an analogue needle the power draw?

maybe i was smoking something...