1643w power spikes. Can my PSU handle it?

[Bubblies]

Hello.

 

I'm wondering about my Corsair AX1500i PSU.

I got 2x 295x2's in my system, when overclocked they spike at around 1650w.

The PSU is also taking a beating with up to 4x 38A through the 12w rail.

 

Is this really safe? I'm considering throwing in my Corsair RM 850w PSU as well so I don't kill my PSU.

 

This was done using Valley Benchmark, I don't dare throwing Furmark into the mix.

 

[ZetZet]

Why do you have two r295x2's. Is it safe? No not really.

[HeathCliff]

EVGA and SuperFlower have 1600W PSU's if you're that concerned which should do the job. 

[DannyRyu]

On a different note can you bench mark that R9 295 Crossfire?

[ZetZet]

EVGA and SuperFlower have 1600W PSU's if you're that concerned which should do the job. 

SuperFlower has a 2000W one.

[Walker998]

considering even a 1600w or 16kw isn't meant to handle that much power, put it to a lower overclock since it won't be stable at that wattage.

[HeathCliff]

SuperFlower has a 2000W one.

 

Oh yeah...starting to remember those 8Pack ads...

[don_svetlio]

a single R9 295X2 stock uses 650W-ish - so it's perfectly normal for 2 of them OCed to be hitting 1400-1500W spikes. But if it exceeds the PSU's rating for prolonged time it might be an issue - unlike SeaSonic, Flextronics don't underspec their stuff so the overload buffer is small

[Bubblies]

Its mostly using 1400w-1500w but those spikes are insane when hitting 1550w-1600w.

And instead of buying another PSU I might just install my RM850 to power everthing except the GPUs.

 

 

On a different note can you bench mark that R9 295 Crossfire?

I have a build log here where I will post building updates as I come along, as soon as I get the cooling and stabilizing done I will add overclock and benchmarking results.

[STRMfrmXMN]

Its mostly using 1400w-1500w but those spikes are insane when hitting 1550w-1600w.

And instead of buying another PSU I might just install my RM850 to power everthing except the GPUs.

 

 

I have a build log here where I will post building updates as I come along, as soon as I get the cooling and stabilizing done I will add overclock and benchmarking results.

I would just get a 1600W EVGA P2/T2 and call it done my friend.

[Stefan1024]

Hello.

 

I'm wondering about my Corsair AX1500i PSU.

I got 2x 295x2's in my system, when overclocked they spike at around 1650w.

The PSU is also taking a beating with up to 4x 38A through the 12w rail.

 

Is this really safe? I'm considering throwing in my Corsair RM 850w PSU as well so I don't kill my PSU.

 

This was done using Valley Benchmark, I don't dare throwing Furmark into the mix.

 

rsz_20151004_130312.jpg

 

A quallity PSU can handle high but short (<100 ms) power spikes usually well. It takes some time to heat up enougth to get into the danger zone.

However you use constantly >90% of the rated wattage. I do this also with my Enermax Digifanless in stress tests and it heat up to 95°C. The software shows only 60°C, but I checked it with the thermal imaging camera.

I seriousely doupt the PSU runns on 40°C when delivering 1400 watts for a long time. So if the PSU is allready preheated, a short overload gets more dangerous. Also the cards can pull as much as in furemark and they will somewhen during gaming and probably triggering the overpower protection.

I do not recomment stressing parts bejond the rated values.

 

Why don't you lower your OC a bit? you can save 100 watt without loosing a lot of performance.

[Bubblies]

A quallity PSU can handle high but short (<100 ms) power spikes usually well. It takes some time to heat up enougth to get into the danger zone.

However you use constantly >90% of the rated wattage. I do this also with my Enermax Digifanless in stress tests and it heat up to 95°C. The software shows only 60°C, but I checked it with the thermal imaging camera.

I seriousely doupt the PSU runns on 40°C when delivering 1400 watts for a long time. So if the PSU is allready preheated, a short overload gets more dangerous. Also the cards can pull as much as in furemark and they will somewhen during gaming and probably triggering the overpower protection.

I do not recomment stressing parts bejond the rated values.

 

Why don't you lower your OC a bit? you can save 100 watt without loosing a lot of performance.

 

Yea, I don't trust the software very much when it comes to psu temp. I don't really know how much it heats up, the software temps never go above 45 degrees, which I really don't believe at all. I might just lower the OC for now and see if I end up installing a second PSU.

[JustCallMeVlad]

Need dual PSU's

 

It amazes me how quad 980 classifieds overvolted and a 5960X @ 4.8 only uses like 1100w but if you want 4 amd hawaii gpu's you need a small nuclear reactor.