i5 6500 3.6GHz on 4 cores?

[Durvelle27]

Disable Turbo and just OC bro

 

[biffzinker]

Disable Turbo and just OC bro

If he does overclock he'll lose AVX/AVX2, all power management, and the ability to read on die core temperatures (I believe the Cores get locked to the C0 state as well.)

 

[P4-630]

Disable Turbo and just OC bro

I have thought about that too,I should be able to with the BIOS I'm using.

I might try that someday, till now everything is fine with gaming, noticed no bottlenecks yet.
It's just that the memory speeds XMP profile and the cpu voltage need to change and have no experience with that (yet) on this system.

 

[Durvelle27]

If he does overclock he'll lose AVX/AVX2, all power management, and the ability to read on die core temperatures (I believe the Cores get locked to the C0 state as well.)

I don't see the cons

 

[biffzinker]

I don't see the cons

This guy again? What if @P4-630 doesn't want power management disabled or he does run a executable with support for AVX or even the boost AVX2 (Integer Units) gets you?

 

[Kanan]

No avx is bad. Even games start to use it now. Must be the last stand to overclock the cpu, the losses make it unprofitable.

 

[EarthDog]

I have thought about that too,I should be able to with the BIOS I'm using.

I might try that someday, till now everything is fine with gaming, noticed no bottlenecks yet.
It's just that the memory speeds XMP profile and the cpu voltage need to change and have no experience with that (yet) on this system.

Xmp is automatic in 90% of cases. Enable it. Lower voltages until you are not stable. The game hasn't changed much honestly.

If he does overclock he'll lose AVX/AVX2, all power management, and the ability to read on die core temperatures (I believe the Cores get locked to the C0 state as well.)

Why would you lose AVX instructions when overclocking? Lose temperature readings?

I know you lose c states and hyperthreading, but, you don't have a HT chip and you are overclocking so c states shouldn't matter. I've never heard of losing avx instruction sets though. Last I recall it was something about the avx instructions running 128bit vs 256bit because it loses the power management. It is slower, but it's still processing the instructions.

Edit: Reference - http://hwbot.org/newsflash/3307_non...ated_to_256_bit_vector_warm_up_(hardware.fr)/

 

[biffzinker]

I've never heard of losing avx instruction sets though.

Ask the people that are/were overclocking locked Skylake.
Non-K Skylake Overclocking Hurts AVX2 Performance, Problem Related to "256-bit Vector Warm-up"

On Skylake, the BCLK frequency is artificially limited for non-K processors using the PCU. Simply put: if the PCU detects >103 BCLK, it shuts down the processor. The way the BCLK is 'unlocked' for the non-K Skylake processors is by disabling the entire PCU in the CPU. This way there is no BCLK detection and thus no logic to shut down the CPU if you're over 103 MHz.

Disabling the PCU causes all the side-effects listed by the motherboard vendors: no IGP, no power management and poor AVX performance. What the Hardware.fr article now explains is why the AVX performance is so poor. In order to enable the upper 256-bit address for AVX2, the PCU needs to 1) detect the instructions and 2) enable higher power consumption mode. Because the PCU is disabled, it cannot accommodate for the AVX2 instructions.

The AVX performance for non-K processors is not artificially limited by Intel. It's a side-effect of disabling the PCU to enable non-K overclocking.

 

[EarthDog]

That's what I just linked. It's still using avx. Just a lot slower. Sorry, a stickler for literal terms I suppose, lol!

I also bench those chips through hwbot.