M14x CPU BIOS overclock

Tried changing the bus speed from this YouTube video and here are my results. The attached images are my default non-OCed performance. i7 2630QM. Firstly, I am wondering how I am consistently achieving 2.67 GHz when 8 cores are used, when my processor is rated at 2 GHz for 8 cores?

Secondly, why am I maxing out at like the same 2.67 GHz when only 1 core is used? Shouldn't it be 2.9?

The benchmark in the images is Fritz Chessmark.

After I OC by setting the bus speed to the maximum 103 GHz, I can occasionally and consistently hit 3 GHz on 1 core but stay at 2.67 GHz on 8 cores. What do you guys think

 

It's the turbo boost function, it sits at 2ghz at idle and 2.9 when needed.

 

Yeah, the 2630QM turbos to 2.6Ghz on 8 "cores" (really 4 cores/8 threads) automatically. So you're just running 2.67Ghz instead of 2.6Ghz.

 

I thought the whole point of it being rated at 2 GHz is that it maxes out to 2 GHz when 4 cores are running? then it scales up to 2.9 GHz when 1 core is running?

And when 1 thread is running (attachment in original post), it maxes at around 2.6 GHz or so and not 2.9?

 

Thanks for reading the actual post genius

 

Intel® Turbo Boost Technology 2.0

Intel Turbo Boost Technology 2.0 is activated when the Operating System (OS) requests the highest processor performance state (P0).


Any of the following can set the upper limit of Intel Turbo Boost Technology 2.0 on a given workload:

Number of active cores
Estimated current consumption
Estimated power consumption
Processor temperature

When the processor is operating below these limits and the user's workload demands additional performance, the processor frequency will dynamically increase until the upper limit of frequency is reached. Intel Turbo Boost Technology 2.0 has multiple algorithms operating in parallel to manage current, power, and temperature to maximize performance and energy efficiency. Note: Intel Turbo Boost Technology 2.0 allows the processor to operate at a power level that is higher than its rated upper power limit (TDP) for short durations to maximize performance.

Any one of the 4 things can cause it to boost, not just when it's using only one core.

 

2Ghz is the base clock. It turbos up to 2.6Ghz on all 4 cores, or higher with less cores.

 

im curious as to how yours is running at 2.67ghz... I OC'd mine the same way... in the BIOS... and mine says its only running at 2.05ghz??

 

If you have one core boost to max, the other 3 will shut down temporary, so the Core 0 will able to boost to 2.90Ghz, and less with more and more cores boost, like mine.

When I start game, it shut down like 2 Cores while one doing the basic threading and another boost for the game, for eg, Core 0 do the basic threading which doesnt boost much, but Core 1 use the boosting to 3.2Ghz (Max is 3.3Ghz for 2720), Core 2 and Core 3 is temporary shut down for boosting effectiveness.

Install this program to see the Turbo Boost in real time boost.

Intel Turbo Boost Monitor

 

The maximum multiplier constantly varies depending on how many cores are in the active state.

4 core: 26 multiplier
3 core: 26 multiplier
2 core: 28 multiplier
1 core: 29 multiplier

When running a single threaded benchmark, there are still other Windows background tasks constantly waking up additional cores so you will never see the full 29 multiplier for more than a few milliseconds here and there. All 4 cores of these CPUs are always entering and exiting various sleep states depending on load. Any individual core does not spend 100% of its time asleep unless you disable it in the bios.

CPU-Z rounds off the multiplier data it reports for consistent validation purposes. If you want a more accurate look at the average multiplier each thread of your CPU is using then try running ThrottleStop in monitoring mode. ThrottleStop is designed for the type of people that like seeing "too much information".

If you run a single threaded benchmark and use the Task Manager Set Affinity... option and lock that benchmark to a single thread of your CPU, you should be able to see the highest average multiplier in ThrottleStop.