Core temp

[heni30]

When rendering with Vray I jump to 100% load on all four cores and the temperature goes up 20 degrees from what it is with no programs running. Is this normal?

 

Is the cpu temperature the same as core temperature?

 

Thanks!

[Scott Schroeder]

Yeah, that's about normal depending on your cooling going on. The older i7's with the older stock Intel coolers/thermal paste would jump almost 50 degrees from about 40 idle to 90-100 load.

 

With your CPU cores being under full load, you have to expect them to warm up a bit.

[heni30]

Thanks.

 

My tech guy said the stock Intel fan/paste are adequate. Is this not the case? Maybe he's not familiar with Vray.

 

Any suggestions for an upgrade? I'm getting 53c at idle right now.

[Scott Schroeder]

What kind of computer are you on? My old Dell XPS had decent cooling but a crappy case that turned it into an oven.

 

I had great success with Arctic Cooling in that old crappy Dell case http://www.newegg.com/Product/Product.aspx?Item=N82E16835186134 That fan dropped it from 90-100 under full load to 75-80 (65 if I left the case door off). I went from 50's idle to low 40's (30's if I had the case open).

 

My new system I custom built and the case is better built for airflow. I'm using a Cooler Master cooling fan and I'm sitting at 28 idle with an i7-3930k hex core.

[Dimitris Tolios]

A swing of 20oC between semi-idle and full load is absolutely normal for an air-cooled CPU (or closed loop water cooler, if overclocked).

Actually it could get bigger with overclocked CPUs.

 

Remember, most applications are using 1 thread - that is 12.5% "load" of a quad i7s (in reality you are occupying 25%, a full core, but at reduced load). Going from one thread to eight, ofc requires more power to be used.

 

More Speed = more juice.

You ask for more power, it draws more power.

[heni30]

Thanks,

 

Yeah, I do have an older i7 920. Time to upgrade and of course the new cpu requires a new mobo.

 

Thanks for the cool master tip.