Question Help choosing new processor

Nov 6, 2021
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Hi, I have to get a new computer and I'm trying to choose a processor. Every 3 or 4 years I have to go through this and I feel like everything I learned in the past has changed. This time I'm having problems with Intel's TDP.

I'm having doubts choosing between i5-11600 or an i7-11700 (non K).

I've read about the new "intel power profiles", PL1, PL2, taus, and I've pretty much understood that, but what I haven't understood is when the processor moves from PL1 to PL2.
I've read that it changes from PL1 to PL2 "on load", but that doesn't ring a bell to me. Does "on load" means when CPU usage is very high (the 8 cores under heavy load) or it means when Turbo Boost is active? Does this means that disabling Turbo Boost from BIOS will keep my processor always on PL1?

My questions are:

  1. Previous question, will disabling TurboBoost keep my processor at TDP (65w)?
  2. Is the PL1 data (which Intel hasn't confirmed afaik) trustable? (65w for both 11600 and 11700)
  3. What is the performance increase when using Turbo Boost? Is it proportional to the frequency increase? (11600 is NTB 2.8Ghz and TB 4.8Ghz, so x1.7 performance increase?) Or depends on other factors too? (near to 1.7, far below to 1.7, ...)


Some background:
  • My main concern is getting quite some power (more than now, at least) but for the system to be as silent as possible, to the point that I'm willing to disable turbo boost.
  • Main cpu load will be compiling large C++ programs, which take far longer than the usual "taus". So turbo boost wouldn't be that useful.
  • Must be intel, and unfortunately I can't wait for i5-12700 non-K (I'd probably be getting it)
  • I'm quite cash limited, so I can't go wild with expensive refrigeration methods (that's another reason why I'm willing to disable TB)
Sorry if I've said any accuracy, I'm really not used to this kind of stuff.

Thanks!
 

Lutfij

Titan
Moderator
Welcome to the forums, newcomer!

I have to go through this and I feel like everything I learned in the past has changed

You're not alone. Happens to the best of us as well.

Your use case scenario might be unique, trying to disable TB but to be honest, if quiet computing is what you're looking for, just pick up parts from Intel's camp and then slap on Noctua fans and CPU cooler into the platform and you're good to go.
 

geofelt

Titan
What is the make/model of the parts you now have?
Likely, many can be reused.
What is your budget?

Today, do not worry much about TDP and power profiles.
The defaults are built to give you maximum performance given your actual environment.

It used to be that you got free performance from overclocking K processors.
No more; processors are binned with negligible overclocking headroom.
Instead, just let the turbo mechanism boost performance of a few cores when conditions permit.

The windows 11 supported thread director is supposed to be a smarter way to do this.
It will be useful on the 12th gen processors.
The i5-12600K looks to be a great chip if it fits your budget. It competes with the i9-11900K.
If you have ddr4 ram, that works too, with little performance impact vs. DDR5.
 

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