Simple Intel Quesion.

[Nexblitzer]

So, i have heard that MCE basically makes Intel Core Chips run at the Single-core turbo boost speed ( Or lower?). But, i have also heard that if you enable MCE, you cannot hit rated single-core turbo speeds. Is this true on current gen intel? 

[Mateyyy]

If you do enable Multicore Enhancement, all of your cores will boost to the advertised boost speed of the CPU, which normally is just for single-core. Realistically though (without enabling MCE, so stock), you won't see that single-core boost too often normally, since there's always processes going on in the background that ultimately will still use more than just one single core.

Basically, take a 9900K for example - 5.0GHz advertised boost clock (so single-core), 4.7GHz all-core boost. If you enable MCE, it'll run at 5.0GHz at load regardless of how many cores are in use.

In most cases though you're still better off overclocking on your own, since MCE will increase voltages to unnecessary levels for most CPUs, therefore you'll have excess heat output and power consumption.

[Haro]

2 minutes ago, Mateyyy said:

since MCE will increase voltages to unnecessary levels for most CPUs, therefore you'll have excess heat output and power consumption.

And it will set the power limit to a higher bar 

Just wanted to add that little bit

[Nexblitzer]

6 minutes ago, Mateyyy said:

If you do enable Multicore Enhancement, all of your cores will boost to the advertised boost speed of the CPU, which normally is just for single-core. Realistically though (without enabling MCE, so stock), you won't see that single-core boost too often normally, since there's always processes going on in the background that ultimately will still use more than just one single core.

Basically, take a 9900K for example - 5.0GHz advertised boost clock (so single-core), 4.7GHz all-core boost. If you enable MCE, it'll run at 5.0GHz at load regardless of how many cores are in use.

In most cases though you're still better off overclocking on your own, since MCE will increase voltages to unnecessary levels for most CPUs, therefore you'll have excess heat output and power consumption.

Cheers. Rightio, i mean yeah.. i don't really know what i expected. But it's actually great, because I intend to use a non-k CPU, so overclocking isn't that important for me. + i have a decent cooler, so that will definitely help.

[Haro]

Just now, Nexblitzer said:

But it's actually great, because I intend to use a non-k CPU, so overclocking isn't that important for me. + i have a decent cooler, so that will definitely help.

MCE won't work with a locked chip 

It will probably just set the power limit to something higher and that's it 

If you have a z board with a locked chip you can only change the BCLK

[Nexblitzer]

2 minutes ago, TofuHaroto said:

MCE won't work with a locked chip 

It will probably just set the power limit to something higher and that's it 

If you have a z board with a locked chip you can only change the BCLK

I've asked multiple people, all Intel users, and they all say MCE works on Intel Non-K CPU's. Also, you can only BLCK on some motherboards, and that's not recommended, as it can corrupt your OS. It also cause Memory issues.

[Haro]

Just now, Nexblitzer said:

all Intel users, and they all say MCE works on Intel Non-K CPU's

It does but I only changes the BCLK

 

1 minute ago, Nexblitzer said:

Also, you can only BLCK on some motherboards, and that's not recommended,

You can only change it on mobos that allow over clocking 

What's wrong with changing the BCLK?

1 minute ago, Nexblitzer said:

as it can corrupt your OS. It also cause Memory issues.

Never heard of that 

[dizmo]

16 minutes ago, TofuHaroto said:

MCE won't work with a locked chip 

It will probably just set the power limit to something higher and that's it 

If you have a z board with a locked chip you can only change the BCLK

Not entirely sure that's accurate. If it works like APE, then you don't need to adjust the BCLK. It's simply removing the power limit on non K SKUs.

[Nexblitzer]

1 minute ago, dizmo said:

Not entirely sure that's accurate. If it works like APE, then you don't need to adjust the BCLK. It's simply removing the power limit on non K SKUs.

Precisely, what i have been told. In fact, i think i watched a gamer's nexus video which explained that MCE is effectively just raising Intel's PL1 and PL2 limits, allowing for a longer and higher clocked TAU.

[Haro]

4 minutes ago, dizmo said:

Not entirely sure that's accurate. If it works like APE

I think it works similarly but yes I think your correct it basically removes the power limit 

My bad lol

[dizmo]

2 minutes ago, Nexblitzer said:

Precisely, what i have been told. In fact, i think i watched a gamer's nexus video which explained that MCE is effectively just raising Intel's PL1 and PL2 limits, allowing for a longer and higher clocked TAU.

Right. I just don't know if it works the same on locked chips, and IIRC it's only on Z boards.

Either way though I don't think the gains were that high, and most of the time it's enabled be default.

[Nexblitzer]

2 minutes ago, TofuHaroto said:

I think it works similarly but yes I think your correct it basically removes the power limit 

My bad lol

Yeah, i did think you were sounding a little off there. Because MCE and BLCK are too-different things, but they are linked to each other in some ways.

[porina]

46 minutes ago, Nexblitzer said:

Precisely, what i have been told. In fact, i think i watched a gamer's nexus video which explained that MCE is effectively just raising Intel's PL1 and PL2 limits, allowing for a longer and higher clocked TAU.

I haven't watched them in a long time, and without revisiting I'm not sure that is right, with the limitation I don't have experience of "recent" Intel generations. My newest is 8th gen.

 

At least up to that point, MCE basically set the multipliers for all cores to equal the single core speed, and jacked up voltage to hope it will be stable. This is technically an overclock. Intel CPUs used to be binned so that all cores could in theory do the max single core turbo clock, but they choose not to do it at the same time. AMD's approach was more aggressively targeted, and not all cores are expected to reach the single core turbo speed.

 

Most enthusiast level motherboards (Z chipset) when combined with k CPUs, MCE off, would still run unlimited power limit by default. This is NOT an overclock. Altering power limit (even to unlimited) without manually changing voltages or clocks is not an overclock, and still considered within spec by Intel.

 

With the latest gen, Intel have confused matters somewhat by adding Turbo Boost Max 3.0, which operates more AMD style in that only specific cores might reach a higher frequency. There's also Thermal Velocity Boost, which if the operating conditions allow, will boost even higher again. I think these two wont be enabled if you run MCE, but again, I've not tried. Only "traditional" single core turbo clocks make sense for MCE since it is trying to get all cores up, not just one or two.

[Nexblitzer]

4 minutes ago, porina said:

I haven't watched them in a long time, and without revisiting I'm not sure that is right, with the limitation I don't have experience of "recent" Intel generations. My newest is 8th gen.

 

At least up to that point, MCE basically set the multipliers for all cores to equal the single core speed, and jacked up voltage to hope it will be stable. This is technically an overclock. Intel CPUs used to be binned so that all cores could in theory do the max single core turbo clock, but they choose not to do it at the same time. AMD's approach was more aggressively targeted, and not all cores are expected to reach the single core turbo speed.

 

Most enthusiast level motherboards (Z chipset) when combined with k CPUs, MCE off, would still run unlimited power limit by default. This is NOT an overclock. Altering power limit (even to unlimited) without manually changing voltages or clocks is not an overclock, and still considered within spec by Intel.

 

With the latest gen, Intel have confused matters somewhat by adding Turbo Boost Max 3.0, which operates more AMD style in that only specific cores might reach a higher frequency. There's also Thermal Velocity Boost, which if the operating conditions allow, will boost even higher again. I think these two wont be enabled if you run MCE, but again, I've not tried. Only "traditional" single core turbo clocks make sense for MCE since it is trying to get all cores up, not just one or two.

2nd best detailed reply so far. Yeah, that sounds right as such. I think honestly, i just might have to test it when i get one.