how would i be able to calculate how many Watts my system uses while overclocked? i think I'm hitting the limits of my 650W psu as when i push my graphics card vcore up to 1.138 while my cpu is overclocked >4ghz @ >1.5vcore it just shuts off. but if i have my cpu at ~3.8ghz @ 1.48vcore i can push my gpu to 1.138 all day long or i can have my cpu at 4.3-4.5ghz and have my gpu at stock voltage/core it runs just fine... or is there another issue going on?
 
http://www.extreme.outervision.com/PSUEngine according to this i need a 619W psu minimum but it doesn't account for the voltage bump on the gpu

The formula for estimating overclocked CPU, GPU, RAM wattages are all the same.  I have that link in my sig.  Since the GPU has no multiplier, leave that ratio as 1 and do the rest of the math.
 
If you wanted simplification, take the stock value of wattage for th egraphics card and multiply the ratio of new clock to stock.  for example,a 200W card with stock speeds of 600/1200/3000 overclocked to 800/1600/4000 would hypothetically draw 267W -- if you didn't touch voltages.  If you did it becomes exponential, and that formula is in my sig too. 
 
Keep in mind, this is extremely simplistic.  Fact is GPU power itself is less than half the total draw of the card, and while the majority comes from GPU core and Vram, the rest comes from the other circuitry on your card.  If you adjust the voltage of the GPU, it won't affect everything else.  The tricky part is that nVidia only quotes the whole video card, they don't tell us what the actual core or each memory chip uses.  This is why it gets complicated.
 
This applies to other processors, CPU and RAM too.  Everything is simplified for a reason.

Max killz

how would i be able to calculate how many Watts my system uses while overclocked? i think I'm hitting the limits of my 650W psu as when i push my graphics card vcore up to 1.138 while my cpu is overclocked >4ghz @ >1.5vcore it just shuts off. but if i have my cpu at ~3.8ghz @ 1.48vcore i can push my gpu to 1.138 all day long or i can have my cpu at 4.3-4.5ghz and have my gpu at stock voltage/core it runs just fine... or is there another issue going on?

http://www.extreme.outervision.com/PSUEngine according to this i need a 619W psu minimum but it doesn't account for the voltage bump on the gpu

Get a new PSU!!!!

slickric

Max killz

how would i be able to calculate how many Watts my system uses while overclocked? i think I'm hitting the limits of my 650W psu as when i push my graphics card vcore up to 1.138 while my cpu is overclocked >4ghz @ >1.5vcore it just shuts off. but if i have my cpu at ~3.8ghz @ 1.48vcore i can push my gpu to 1.138 all day long or i can have my cpu at 4.3-4.5ghz and have my gpu at stock voltage/core it runs just fine... or is there another issue going on?

http://www.extreme.outervision.com/PSUEngine according to this i need a 619W psu minimum but it doesn't account for the voltage bump on the gpu

Get a new PSU!!!!

wish i could afford one  i have a 850 but it doesn't have enough on the 12v to run my 480, hell it struggles powering a e8400 and a 460.... if i plug in a dvd burner or another fan it cuts out