CPU power consumption

[Guest]

If TDP is not the power consumed by the processor, then how can I know the full power (@ 100%) consumption before deciding on buying one?

 

[Mr_Venbeer]

What is your Powersupply and which processor would you like to buy?

 

[herrwizo]

Watch reviews online, especially those where the reviewers were using kill-a-watt to measure real power consumption. No ther way to tell for sure. In fact, this won't tell the whole story; each sample is different, can be run on different voltages and different clocks and on different motherboards. When picking PSUs for new righs, I usually just take the TDP value and add 20% to be sure.

 

[jnewegger23]

I'm guessing what's behind your question is how do you figure out if the psu you have or want to buy is going to work with certain chips of a given tdp rating? If so, try using this:

http://extreme.outervision.com/psucalculatorlite.jsp

Input as much as you can to get an accurate total. If say you get something like a recommended psu of 484W Obviously go get a little more and make sure to have at least a 500W psu (tier 1 preferred - see this if that's a new term for you: http://www.tomshardware.com/forum/id-1804779/power-supply-unit-tier-list.html)

Hope this helps!

Thanks,

Justin S.

 

[Guest]

I'm guessing what's behind your question is how do you figure out if the psu you have or want to buy is going to work with certain chips of a given tdp rating? If so, try using this:

http://extreme.outervision.com/psucalculatorlite.jsp

Input as much as you can to get an accurate total. If say you get something like a recommended psu of 484W Obviously go get a little more and make sure to have at least a 500W psu (tier 1 preferred - see this if that's a new term for you: http://www.tomshardware.com/forum/id-1804779/power-supply-unit-tier-list.html)

Hope this helps!

Thanks,

Justin S.

Building a new system though. So, If I choose only the desired CPU and click "calculate", the minimum wattage is the wattage consumed by CPU (chosen at 90% TDP) ?

For i5-4670k, its 106 W, does that mean it's consuming 106 W at 90% load?
Sad that extreme outervision hasn't have i5-4690k.

 

[jnewegger23]

Why can't you input all the parts for the theoretical new system?

 

[Guest]

Just to know, if I'm about to upgrade from pentium to a new CPU of same socket keeping all other components same, how could I calculate to know the existing power supply will be enough or not? To learn something about CPU power consumption.

 

[herrwizo]

It will most likely be enough if you are talking about Haswell based CPUs. The difference between Pentium and i5/i7 is roughly 30-40W.