Minimum numbers are overstated by 28% so when they say 500 watts minimum its 360 watts not 500
https://www.overclock.net/forum/31-...et/forum/31-power-supplies/1557720-why-amd-nvidia-power-requirements-wrong.html

Even with the number lowered you cant run a GTX 1070 as the 12v rail on the S12II 430 watt is only rated for 360 watts
If you want a more poerwful GPU you should replace the PSU anyway as the S12II uses group regulation which means the voltage regulation is not all that great

 

That's because, sadly, there are just downright horrible power supplies being made and people still buy them to save a few bucks. So naturally overstating by a couple of hundred watts is pretty standard. Also various oem power supplies are horrible as well.

 

I'd like to hear some more opinions on that. Thanks.

 

Upgrade you PSU. Cheap upgrade but worth it.


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just buy a seasonic 550-650 gold for 90 bucks. Cheap insurance imo.

 

that locked i5 2400 (unless you forgot the "K") won't draw 125 watts, more like 80 from my recollection when i had one. hard drive(s) ~5w, fans a few watts each, RAM ~4 watts each stick and ~8 watts for the chipset doesn't quite add up to the other 45 watts (80+45=125) but maybe keep that 125 to err on the side of caution.

if it's a K chip than it's pretty spot on. that 150 watts for the 1070 is inline with peak gaming power

anything below 80% of the PSU rated output is A OK. and keep in mind we are talking MAX power consumption that unless you stress both the cpu and gpu, you will never see that amount gaming (or just about anything else.)

i took a watt meter and measure my own consumption for reasons - after accounting for PSU efficency my OCed i7 and OCed (bios modded) 980ti drew ~565 wattts running prime 95 (blend) and kombuster.

other than that my max was ~360 gaming TW3, ~330 booting into windows and about 65 watts idling.

now that does look good for your circumstances but it's the age of your PSU that could be questionable. i've ran across a 2 articles in the last year or so on [H]ocp where they tested 10 y/o PSU and found they failed/shut down past 80% of it's rated load (both 1K watts, one an antec another a silverstone - so no junk). i was surprised.

i mention that because seasonic, when looking at your PSU specs, kindly told me i was in the legacy section on the web site. so if that has been running for more than 5 years . . it may not give you all the 430 watts. how much less would be a guess.

personally, me being a whacky and crazy person and seeing it's a seasonic, who ALWAYS has proper protections, i'd give it a go. imo, worse thing that can happen is shutting down during a deathmatch. though keep in mind that a heavy load and aging could cause some stability issues due to ripple. so if those happen; you'll need to replace it as much as if it shuts down.

idk, i think i cover most . .even though i gave what craziness i would do, please make you're decision based on verifiable facts and your personal circumstances.

though i would suggest looking at whats on sale just in case.

 

You could perhaps think of your PSU as a 360W one, not 430W, because for the 12V output your PSU can only do 360W. Those 12V are what the CPU and GPU will use and where nearly all the power usage of the PC will come from while you are playing a game.

When thinking of it as a 360W PSU, this PSU is cutting it too close. And like @looniam writes, the parts in the PSU will degrade over the years and it won't be able to do 100% anymore. If everything about the protection stuff in the PSU works right, it should shut down if the CPU+GPU ask for too much power. Using the PSU hopefully won't be dangerous for your parts but I just don't like the idea to try to use a PSU that can just barely do enough and is also old.

 

I wouldn't chance it. When trying to figure out what PSU wattage you need always calculate off of the maximum possible draw from your whole system and not what it's currently using Then add 50-100 watts for headroom. Also, you didn't mention how many drives or devices you're powering. I wouldn't really suggest anything 500w or below for a gaming machine. Upgrade my friend. You'll be glad you did.

 

430w would do fine if its quality one no problems i had 1080ti and 980 mining on same psu and saw about 500w power draw from wall. u will likely see with 2500 and gtx 1070 250w on heavy gaming and 300w peak. unless u run furmark and linx same time will peak about 350w. but for future proofing get 550w one and u can use any gpu and cpu in future.