Will a 750 watt bronze mwe v3 cooler master be enough for 5600 + 3090 combo?

[YagamiNite]

Just like the title says im wondering if a 750 watt bronze mwe v3 cooler master will be enough for 5600 + 3090

and i cant get a better psu because of the budget and also i cant get any new gpus or anything other than a 3090 because if i find something its either cheaper and yes it consumes less power or its the same performance but much expensive like a 5070 its 950$ here while a 3090 used is ~700$ and also the 40 series like 4070 super is more expensive and it has half the vram just like the 5070 too which is terrible for future proofing.

[RONOTHAN##]

I wouldn't trust it. The big problem isn't necessarily the wattage requirement, 750W should be enough in theory (it is close to the edge though), the issue is the power transients that the 3090 has. The 3090 will momentarily spike to over 1000W of power draw, and that will trigger overcurrent protection on most PSUs unless they're properly designed for it. The MWE v3 is not one of those units that's properly designed for it, so odds are you will trigger OCP on this card. Dropping the power limit helps a bit, though not that much as the power limit is average power, not instantaneous, so those spikes are still there and it will likely only reduce the number of system shutdowns, not eliminate them. 

 

Where are you shopping for GPUs, what are you doing with your system, and what's your total budget? You can probably get a different card that will be a better fit for you. The 7900 XT, for instance, has a similarly high amount of VRAM (not quite as much, but 20GB is still pretty extensive), not nearly as bad power spikes, a bit faster than the 3090, and usually a bit cheaper used as well. You can then put that money towards a better PSU rather than a budget end unit that will have potential issues with high end GPUs. 

[YagamiNite]

18 hours ago, RONOTHAN## said:

I wouldn't trust it. The big problem isn't necessarily the wattage requirement, 750W should be enough in theory (it is close to the edge though), the issue is the power transients that the 3090 has. The 3090 will momentarily spike to over 1000W of power draw, and that will trigger overcurrent protection on most PSUs unless they're properly designed for it. The MWE v3 is not one of those units that's properly designed for it, so odds are you will trigger OCP on this card. Dropping the power limit helps a bit, though not that much as the power limit is average power, not instantaneous, so those spikes are still there and it will likely only reduce the number of system shutdowns, not eliminate them. 

 

Where are you shopping for GPUs, what are you doing with your system, and what's your total budget? You can probably get a different card that will be a better fit for you. The 7900 XT, for instance, has a similarly high amount of VRAM (not quite as much, but 20GB is still pretty extensive), not nearly as bad power spikes, a bit faster than the 3090, and usually a bit cheaper used as well. You can then put that money towards a better PSU rather than a budget end unit that will have potential issues with high end GPUs. 

the thing is that i already have the pc and im planning to upgrade my gpu (i forgot to mention this), I'm only buying from the used market and i just want to play video games with this system, in my country here electronics are expensive as hell for example the rx 9070xt costs 1050$ here and its not because of the shortage or whatever is happening in the world right now for example in the us they have the same problem but it only happened now with the new generation but here in my country even if things are normal the prices are still expensive often being very close to being double the price so it really sucks as for getting 7900xt its not available in the used market like a 3090 and there's a card that gives a good performance per dollar like the 3090 and has enough vram, i found a 3080 and i know it consumes just as much as 3090 for 480$ but 10gb im not spending that for only 10gb of vram id rather spent 200 more and get more than double the vram than buy a 3080 as for amd the ray tracing is a really big deal and also if games became demanding ill have the dlss upscaler for free performance

i think ill just go for it and hope my pc doesnt blow up, worst case scenario my pc shuts down and if that happens it will take me a couple of months to get a new gold 850 watt psu

Thank you for your reply btw I appreciate it.