i5 2500k PC very high current draw

Kpeterscr

Honorable
May 5, 2017
17
0
10,510
Hey guys,

Was wondering if you can help me out figuring this.

My specs are as follows:

-i5 2500k (stock atm)
-Radeon RX480 8GB MSI Armor (8pin)
-Asus P8p67 M-PRO motherboard
-4gb x2 Corsair Blue Vengeance 1600
-WD Velociraptor 1TB 10k
-Thermaltake TR2-600 PSU
-Hyper 212 EVO

So long story short I started overclocking up to 4.2-4.3... worked fine until I tried to O.C. the vid card and it started giving me instability. HD died too, so I purchased the WD one and a fresh Win 10 install. A friend suggested I should use a watt meter plugged to the PSU and to the wall to figure out if my PSU was bottlenecking my O.C.

So turns out that STOCK at idle my computer is consuming from 211w-230w which sounds like a whole lot, to makes matters worse firing GTA V means consumption goes up to 670w and GTAV with x42 overclock means it goes up to 780w !!!! This is w/o O.C. on vid card.

I fired up Prime 95 with the stock multi on FFT and it went from 211w>408w! Is my 2500k toast? :(

Just started o.c. it to give it a longer life. Aside from the current draw the computer works flawlessly.

And...how the heck does a 600 watt psu give out 780+ watts?

To make matters more confusing I tried the Intel Utility that calculates consumption directly on the CPU and it's perfect. 5.80w idle 74w full load. This just makes it stranger.

Thanks for any insight!

 
Solution
Yeah thats how it works. That PSU is greater than 72% but less than 80% efficient. I picked 75% as a realistic medium. If you get an 800w reading at the wall, it would be 600w being delivered to your PC with 200w wasted in heat just from the PSU.
http://www.tomshardware.com/reviews/amd-radeon-rx-480-polaris-10,4616-9.html

From tom's test it is possible to experience up to 420w consumption from just the graphics card alone at stock + 100w for CPU and maybe 50w - 100w more for everything else you got in there (fans, RAM, motherboard, HDDs).

Now the thing to note about using that meter is it is measuring absolute wattage from the wall. This does not take into account the efficiency of your PSU. That particular model is a fire hazard with very low efficiency. Honestly surprised it didn't pop taking your entire rig with it when you started to OC it.

So it is about 75% efficient (not even bronze, yikes), meaning it is only actually outputting around 500w with a wall reading of 670w (670 x 0.75).

If you want to OC your rig, please invest in a half-decent PSU.
 

Kpeterscr

Honorable
May 5, 2017
17
0
10,510
Hi thanks for your reply wasn't aware Thermaltake made such cheap PSU's. I'm not sure if I can blame the RX 480 since the power consumption jumps like crazy under prime 95 FFT which shouldn't involve the GFX card at all. What do you make of that?

I'm starting to think that the PSU is actually pulling those almost 800 watts from the wall but delivering who knows how much probably 500 like you say to the components.

 
Yeah thats how it works. That PSU is greater than 72% but less than 80% efficient. I picked 75% as a realistic medium. If you get an 800w reading at the wall, it would be 600w being delivered to your PC with 200w wasted in heat just from the PSU.
 
Solution