cpu issue

[Pavol64]

After the bios update, at 100 percent performance, from 3.29gh, it only goes to 3.18gh and in addition, in the task manager, the base speed is 3.19gh. Do you know how to solve this problem? My pc is HP ProDesk 490 G3 MT business pc. CPu name is intel core i5 6500

[BeemerBiker]

Make sure turbo boost is enabled in the BIOS.

verify the speed using CPUID

The i5-6500 should turbo to 3.6ghz.  It will struggle with gaming and all those business security update will slow down the pc.    You may want to upgrade to i7-6700 processor for gaming purpose on anything faster than plants-vs- zombies 😄

[NonSequitur777]

@Pavol64,

In addition to the expert advice @BeemerBiker provided, the slight drop in speed you're seeing after a BIOS update —specifically your Intel Core i5-6500 reporting 3.18 GHz or 3.19 GHz instead of its advertised 3.20 GHz base clock— is typically caused by the BIOS update resetting power management or clock frequency calculations.

Here is how you can resolve this and get your performance back to expected levels.

1. Enable "Turbo Boost" in BIOS:

BIOS updates often reset settings to "Safe" or "Standard" defaults, which might have disabled Intel Turbo Boost. Without this, your CPU will not reach its higher performance states (up to 3.60 GHz for the i5-6500).

• Action: Restart your PC and repeatedly tap F10 to enter the BIOS.
• Navigation: Go to Advanced > Power Management Options.
• Check: Ensure Turbo Boost is set to Enabled. Also, verify that Intel SpeedStep is Enabled. 

2. Check Windows Power Plan:

If your Windows Power Plan is set to a "Balanced" or "Power Saver" mode, it may be capping the processor's maximum frequency.

• Action: Open Control Panel > Power Options.
• Setting: Select the High Performance plan.
• Verification: Click Change plan settings > Change advanced power settings. Expand Processor power management and ensure the Maximum processor state is set to 100%.

3. Account for "Bus Speed" Fluctuations:

The difference between 3.20 GHz and 3.18/3.19 GHz is extremely small (less than 1%) and is often just a reporting variation.

• Why it happens: Your CPU speed is calculated as: Multiplied Base Clock (100 MHz) x Multiplier.
• The Cause: Sometimes a BIOS update slightly adjusts the Base Clock to 99.7 MHz or 99.8 MHz to improve system stability or reduce electromagnetic interference (Spread Spectrum). This results in speeds like 3.18 GHz instead of 3.20 GHz.
• The Solution: Truth be told, this is usually considered "normal behavior" and does not actually impact real-world performance. You can use a tool like CPU-Z to see the exact real-time clock speed more accurately than Task Manager.

4. Restore BIOS Defaults:

If the speed remains "stuck" even under a heavy load, there may be a glitch in how the new BIOS version is interacting with your hardware.

• Action: In the BIOS (F10), look for an option to "Apply Factory Defaults and Exit" or "Restore Defaults". This often clears out stuck power-limit flags that a standard update might leave behind.

If your CPU seems stuck at a lower speed and won't ramp up even during heavy tasks, loading the BIOS defaults is a common and effective fix: cpu speed stuck or not speeding up (solved).

If you want to see if your CPU is actually performing correctly, you can run a quick benchmark test such as via Userbenchmark.

Kind Regards,

NonSequitur777

[Pavol64]

thanks for info i checked if turbo boost in bios is enabled and it is and now a read that it should go to 3.6 gh i was shocked because before the  bios update in turbo mode it went only to 3.29gh and there is writed base speed 3.19gh i will try to get i7 6700

[Pavol64]

i checked if turbo boost is enabled and it is i checked too the power plan and its on maximun power but i have read that turbo boost should go to 3.6 gh but even than everythink went only to 3.29 gh i wouldnt be askink what happened to the 0.1gh but its little bit more0.10gh but i also think i should upgrade my gpu because i now only use my igpu and cpu to i7 6700 thanks for info