My computer spec:
i7 5820K
ASUS RAMPAGE V EXTREME
x2 EVGA GTX 980TI SC. REF. [SLI.]
CORSAIR DOMINATOR PLATINUM 4X4/2666 CL.16 DDR4
KINGSTON PREDATOR M.2 240GB.
WD 3TB. RED
CORSAIR AX860I
EKWB SUPREMACY EVO NICKEL PLEXI
EKWB FC GTX TITAN X NICKEL PLEXI
EKWB GTX TITAN X BACKPLATE BACK
XSPC AX480
BITSPOWER MULTI LINK ADAPTOR
BITSPOWER ADAPTOR ROTARY 45/90 DEGREE
BITSPOWER Z MULTI TANK D5 KIT 150MM.
BITSPOWER D5 TOP MOD ACRYLIC VERSION
LAING D5 655 PUMP
MAYHEMS YELLOW DYE / DEEP RED
HRC FLEX PIPE 10/12
GALAXY PC CABLE
NOCTUA IPPC 3000RPM
Currently, I have only overclocked my CPU to 4.5 GHz using Vcore 1.3v. And, my pc is still working fine. I am planning to OC my GPUs as well. But, I am not sure whether my PSU 860w would be able give enough power for doing so. Can you guys please confirm for me? Thank you in advance.
To be honest, I don't know what "Corsair Link" is. I guess it is an application. But, I am using windows 10 though, just in case. there might be a compatibility issue with it.
To be honest, I don't know what "Corsair Link" is. I guess it is an application. But, I am using windows 10 though, just in case. there might be a compatibility issue with it.
Their PSU pulled 339W from the wall with the CPU at 4.3 GHz. If I assume that it was 90% efficient while pulling 339W from the wall, then the computer was pulling 305W from the PSU. Add about 500W for that for two GTX 980 Ti's at stock, and now we're looking at 805W. Of course, the gaming power consumption will never be that high, but it would probably peak at around 775 and ride about 750W. Overclock the 980 Ti's, and the power consumption starts exceeding 850W.
Their PSU pulled 339W from the wall with the CPU at 4.3 GHz. If I assume that it was 90% efficient while pulling 339W from the wall, then the computer was pulling 305W from the PSU. Add about 500W for that for two GTX 980 Ti's at stock, and now we're looking at 805W. Of course, the gaming power consumption will never be that high, but it would probably peak at around 775 and ride about 750W. Overclock the 980 Ti's, and the power consumption starts exceeding 850W.
Unfortunately that test is flawed (pretty much like every single one of them) for the same damn reason. They had a high-end GPU in that machine while testing CPU power draw. Now even though it might not have been stressed during this test, it is important to note that GPUs pull power even when idling. My 680 is reporting a 39% power draw right now (0% GPU usage). It has a power design of 195W, so basically my unit is pulling ~75 watts just sitting here.
I don't know why it is pulling 39% right now, but I notice I have a much higher power draw the warmer it is in my room.
Thanks for all the comments, I guess I will try corsair link to check how many watt my system consuming under full load first. Anyway, if you think 860w wouldn't be enough for overclocking GPUs. How many watt do I need to be able to oc GPUs safely?
Unfortunately that test is flawed (pretty much like every single one of them) for the same damn reason. They had a high-end GPU in that machine while testing CPU power draw. Now even though it might not have been stressed during this test, it is important to note that GPUs pull power even when idling. My 680 is reporting a 39% power draw right now (0% GPU usage). It has a power design of 195W, so basically my unit is pulling ~75 watts just sitting here.
I don't know why it is pulling 39% right now, but I notice I have a much higher power draw the warmer it is in my room.
Yeah, and he has two high-end cards in his system, two 980 Ti's. That's why I linked to that one. If he had like say two 970s, then I would have looked for something more realistic for his system.
Thanks for all the comments, I guess I will try corsair link to check how many watt my system consuming under full load first. Anyway, if you think 860w wouldn't be enough for overclocking GPUs. How many watt do I need to be able to oc GPUs safely?
Unfortunately that test is flawed (pretty much like every single one of them) for the same damn reason. They had a high-end GPU in that machine while testing CPU power draw. Now even though it might not have been stressed during this test, it is important to note that GPUs pull power even when idling. My 680 is reporting a 39% power draw right now (0% GPU usage). It has a power design of 195W, so basically my unit is pulling ~75 watts just sitting here.
I don't know why it is pulling 39% right now, but I notice I have a much higher power draw the warmer it is in my room.
Yeah, and he has two high-end cards in his system, two 980 Ti's. That's why I linked to that one. If he had like say two 970s, then I would have looked for something more realistic for his system.
I guess my point went unheard. If that 780 pulls the same amount of power as my 680, their CPU was only pulling ~230W with a nice overclock on it, in a synthetic test. That is 600W -before factoring in PSU efficiency - 600W is more than enough for stock 980Ti's that have a power design of 250W. Now, I know he was asking about overclocking, and no I don't think he should go too in depth when overclocking, but if he does, he can do plenty... I would suggest that he not stress the entire system to 100% with synthetic tests to be safe.
I hate disagreeing with you TC, but I say he can do this. As long as his system won't be stressed to 100% across both GPUs and CPU, he will be fine with overclocking.
I guess my point went unheard. If that 780 pulls the same amount of power as my 680, their CPU was only pulling ~230W with a nice overclock on it, in a synthetic test. That is 600W -before factoring in PSU efficiency - 600W is more than enough for stock 980Ti's that have a power design of 250W. Now, I know he was asking about overclocking, and no I don't think he should go too in depth when overclocking, but if he does, he can do plenty... I would suggest that he not stress the entire system to 100% with synthetic tests to be safe.
I hate disagreeing with you TC, but I say he can do this. As long as his system won't be stressed to 100% across both GPUs and CPU, he will be fine with overclocking.
I don't understand why you're comparing it to your system. He has two 980 Ti's and he wants to overclock them. If their PSU was pulling 339W from the wall with one idling GTX 780 with the 5820K at 4.3 GHz and then you factor in efficiency (305W being pulled from the PSU) and then add about 500W for two 980 Ti's at stock, you're already at least 750W to 775W while gaming. Overclock the 980 Ti's, and now we're easily pushing 850W. With the kind of cooling that tuazelda has, I would expect some hefty overclocking and I don't want him to be limited by his PSU.
If their PSU was pulling 339W from the wall with one idling GTX 780 with the 5820K at 4.3 GHz and then you factor in efficiency (305W being pulled from the PSU)
If he has the cooling to overclock this 980Ti's like demons and wants to do so, then yes he should definitely get a PSU upgrade. I really don't know anything of the parts he has listed. But what I was trying to point out is that All these so called 'professional' reviews of CPUs always screw up the power draw test by loading in a high end GPU that will skew the results. The comparison I made was towards the 780 they used in there test. The designed power draw is actually higher than my 680, so at idle it should be pulling more than the ~75W my 680 does at idle. This means that their overclocked 5820k was pulling less than 230W, even though their test showed ~330W. Being a huge mistake aside, this means that the CPU is going to pull less than what you are expecting. Next, factor in that it pulls this much power while having that many threads used. Finally, realize that the chances of having this CPU running that much data along side the two GPUs in a game and not a synthetic benchmark, an 860W PSU gets you further than you might think.
No, no, no, no, that's 339W from the wall. Multiply that by .90 to estimate for 90% efficiency, and we could say that the entire computer was pulling 305W out of the PSU while their 5820K was being tested (and with the GTX 780 idling). I am not saying that the CPU pulled 305W by itself.
The GTX 980 Ti can pull about 250W by itself. Add another 250W for a 2nd GTX 980 Ti and now we're looking at an absolute maximum of 805W. While gaming, the power consumption would ride about 750 to 775W. Overclock the GTX 980 Ti's, and the power consumption could easily exceed 850W. I know that the AX860i can deliver 860W 24/7 if it's ever needed, but that would also make its fan run at full speed and it would exhaust extra heat into his room.
THE CPU WAS NOT PULLING 305W PERIOD. EFFICIENCY OR NOT, IT'S NO WHERE NEAR 305W.
Remove the estimated 80W+ from the GPU and then factor in the efficiency. No where near that mark now. Close to ~200W, and then you can add in 500W for the GPUs, factor in efficiency, and now where are we? Add maybe 15% more power draw form the GPUs, and that is there max synthetic torture test max.
When did I say that the CPU itself was pulling 305W from the PSU? I said several times now that this estimation from my calculation is the entire computer's power consumption that is being pulled out of the PSU. That's the CPU, the motherboard, the memory, etc... everything. Not just the CPU. Again, follow this closely: the power supply pulled 339W from the wall outlet. So, if I assume that their PSU was 90% efficient while pulling 339W from the wall, then that would mean the computer pulled 305W from the PSU.
You have tried to add 500W (which is reasonable) to the ~305W estimate, but that is inaccurate since it is also using the 780 load with it. When we add 305 and 500 we get 805, but that is extremely high. A more realistic number would be 700W, but that is also with everything under a synthetic load. So, we have ~150W headroom, and that is without thinking of gaming load only. I'm just worried that we might be thinking that he has less room to overclock than he does.
Of course, using a meter would help dismiss my insane rambling instantly... Sorry TC and tuazelda, my mind has been a bit off the past few days.
Yeah, no offense, but I'm definitely noticing in this thread. If you need to talk about something, then I'm here for you. Just PM me and I'll listen. It's amazing how helpful just having someone listening to you can be.
By the way, I successfully overclocked both of my GPUs to 1500 MHz clock/7600 MHz mem clock with 110% power by using AB 4.1.1 (stock BIOS). I am pretty sure I couldn't use 425 custom bios. Since, my PSU won't be enough.
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