Questions tagged [cpu-speed]

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CPU speed drops to 0.61/0.79GHz and remains there whenever I unplug the charger

My laptop is a dell latitude e6520 Windows 10 Pro 21H2 Intel Core i5-2520M CPU @ 2.50GHz processor and a 12 GB RAM. I recently changed it's motherboard and whenever the laptop's charger is unplugged, ...
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Why are some of my CPU cores running only at a fraction of their factory frequency and some even above?

I'm running Windows 7 Home Premium 64-bit and I have an Intel Core i7-4930K CPU @ 3.40 GHz nominal frequency. Please have a look at this CPUID HWMonitor output: Cores #1, #3, #4 are running at only ...
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Lenovo laptop CPU is erratically underclocked [duplicate]

My laptop is Lenovo legion 16 pro: CPU: AMD Ryzen 7 5800h with Radeon graphics RAM: 16GB 3200MHz Storage: 1TB SSD GPU: NVIDIA Geforce RTX 3060 6GB Operating System: Windows 11 My problem is that the ...
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Why my laptop cpu I5-1135G7 have base speed is 1.38 ghz while the speed can go higher? [duplicate]

Sometimes my cpu can even go down to 0.30 ghz. Does anyone know why because this is getting a bit annoying for me.enter image description here
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Intel SpeedStep not working in i3-380M

I have laptop Lenovo B560 instel i3-380M with Intel SpeedStep, however i am not getting full speed of CPU reported in CPU-Z when CPU is under 100% load. Windows 7 x64 EDIT: Guess it was battery issue (...
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CPU clocks locking at max speed on Windows 10 even when it's not under load

I have an Asus X510UR Laptop running a dual boot setup with Windows 10 (build 19042) and Ubuntu 20.04. Whenever I boot Windows and login, my CPU (an Intel i7 8550U) clock locks at max speed, temps ...
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can i reduce even more the cpu clock for power saving?

I am using fedora 34 with gnome and the cpufreq extension to control the execution speed of the cpu of a computer. I have configured it to run in power saving mode, thus when doing nothing the cpu ...
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Are all cores in a CPU equal regarding speed?

While browsing the internet looking for information on virtual machine sizing, I came across the following comment: "AN Intel XEON Dual Core CPU has e.g 2 x 3000 MHZ. The Second Core is only 50-...
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Verify logic: low base clock speed - CPU boosting = CPU Longevity?

Can Someone verify my logic here. Planning on buying a new laptop in the coming weeks - and expensive one, hoping it will last a long time. I'm planning on buying low base frequency CPU 1.8 - 2 GHz ...
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CPU Speed below base speed and stuck at 0.79ghz

I have a computer with these specs. One day my old RAM stop working so I replaced it with another RAM which is exactly same. But after that I realize my games has so much of FPS drops then I check my ...
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Can I purposely slow a PC down?

I am testing a (non-online) game and I cannot react quickly enough to test the higher levels (I am 60 years old and not as quick as I once was...). Is there any way I can slow the CPU to 50% or even ...
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Best way to schedule CPU limiting

What's the best way to schedule a limit to CPU speed so my computer's fan doesn't wake me up at night? It looks like it might be possible to schedule calls to powercfg.exe, e.g. powercfg.exe -...
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7 answers
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CPU Speed stuck at 0.78 GHz, How do I increase it to its base speed of 2.30 GHz?

My 1yr old laptop, HP Pavilion 15 has it's CPU, Intel i5-8300H stuck at 0.78 GHz whenever it's plugged and charging, and the moment I remove the charger plug or switch it off, it increases suddenly ...
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Why is my laptop’s CPU not running at base speed and underclocking itself?

I noticed my laptop performance dropping so I checked the CPU cores speed and found out it is underclocking as you can see also when I put the CPU on stress it is not changing not even going to 100%. ...
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Laptop CPU runs at 4GHz even when idle, while plugged in

When I use my Windows 10 laptop while plugged in, my CPU continuously runs at 4GHz, even when idle, causing the laptop to get hot and the fans to ramp up, but on battery power, the CPU's clock speed ...
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ThrottleStop dosen't save SpeedShift SST Limits

ThrottleStop dosen't save SpeedShift SST Limits in profile 1,2,3,4. I have to select a profile and everytime have to adjust speedshift limits manually opening TS. Is there a workarround for this ? ...
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"1.0 GHz with turbo boost up to 3.6 GHz" -- acceptable processor clock speed?

I have been using a laptop with 2.3 GHz processor clock speed so far, which has been sufficient for my needs (which peak at some intensive programming, e.g. ML). I'm looking for a new one right now, ...
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Intel chip ALWAYS above base clock speed

My Intel chip is constantly running at a speed close to its max turbo frequency, even when the machine is relatively idle. I recently had an issue with it running too slowly, and followed this advice,...
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1 answer
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intel_pstate locks CPU to 400 MHz for Intel Xeon E5-2650 v4 on CoreOS

Hardware: 4 Intel HNS2600TPR in one chassis on 2 power cords, Each with 1 Intel(R) Xeon(R) CPU E5-2650 v4 @ 2.20GHz, 128 GB RAM. [root@sigma02 Linux_X64]# dmidecode # dmidecode 3.2 Getting SMBIOS ...
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How to avoid FPS drop on games after the laptop battery dies?

I am having an FPS drop when I play games (e.g., League of Legends). When I bought my Laptop PC (DELL INSPIRON N5110) I didn't experience the FPS Drop, it was around 60 FPS and stable. It started when ...
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Why does my CPU have a much higher speed than it's core speed of 1.6GHz?

My CPU, Intel(R) Core(TM) i5-8250U @1.6GHz averages around 2k GHz and I'm pretty sure the CPU is unclock-able. Why?
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Reducing CPU load/speed in FreeDOS

I have recently installed FreeDOS on my old laptop, but the CPU is too fast for when I want to play games. Is there an option for me to reduce the CPU speed, so I can play retro games at normal speed? ...
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-1 votes
1 answer
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is there a command to accelerate CPU?

I'm running the code for object detection using OpenCV, the number of frames is not enough to move the robot smoothly. So, I'd like to accelerate the CPU more when the robot moves. when we use jetson,...
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2 votes
1 answer
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Which component is responsible for adjusting the CPU multiplier?

I am preparing a school presentation about underclocking/overclocking and have read several articles about the CPU multiplier during my research. Some of the articles have claimed that the CPU itself ...
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CPU running to slow

My laptop's (a Dell Studio XPS) CPU appears to be being throttled. It's an Intel Core Duo P8600 2.4hGhz running windows 10. Perf mon is reporting its speed as 1.58Ghz rather than 2.4Ghz The temp is ...
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Task Manager never reports CPU usage above 51%, even when running CPU benchmark tools that should max out the CPU

My laptop (HP envy 15 x360 ar052na) never seems to be able to use more than 51% CPU usage, according to Task Manager. I've tried adjusting power plan settings but nothing seems to work. Even CPU ...
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1 vote
2 answers
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Setting CPU Frequency on Amazon AWS

I've setup an EC2 Instance on AWS Amazon, and I'm trying to change the CPU speed of the cores by following these steps: https://software.intel.com/sites/default/files/comment/1716807/how-to-change-...
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1 vote
1 answer
2k views

Is it normal for my CPU to run at 1GHz higher than base clock speed? [duplicate]

I have the Intel Core i7-8700 CPU(non K version) and it's constantly running at much hicher clock speeds than it's base speed and I was wondering if that's normal?
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2 votes
2 answers
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Pipelining increases clock speed?

So I recently taken interest in learning about computer hardware and thought you guys might help, I am referring Upgrading and Repairing PCs book and came across pipelining since I wanted to have a ...
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5 votes
1 answer
2k views

Does TSX-NI provide an advantage when running virtual machines? [closed]

My question is about CPU architecture and the instruction set extension TSX-NI. For which usage scenario is it useful, and especially is it useful for web development or running virtual machines and ...
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-1 votes
1 answer
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Computer slows down when plugged in

Recently, whenever I plug in my laptop, the CPU slows down severely. Also, it isn't charging, as it says "plugged in, not charging". The CPU drops from 2200 Mhz, to 500 Mhz. I've changed the advanced ...
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1 answer
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The Silicon Lottery

While reading about overclocking processors and GPU I came across the term 'silicon lottery'. On trying to find out its meaning I was able to understand that it is related to being able to overclock ...
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2 answers
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Why does CPU speed variate even computing massively? [duplicate]

I realized that speed of my CPU is not constant even if it compute massively. The speed wanders from ~4,2 to ~4,4GHz in task manager. Why? I have two theorem: This is an average speed, and even ...
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2 answers
489 views

How to do measure execution time of cpu?

I want to measure execution time of cpus and compare them like bencmark websites. as I know we have a formula for the calculate that. Execution time = CPI * I * 1/CR But I stuck at the formula. I ...
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1 vote
2 answers
358 views

My CPU won't run higher than 35% in all cores

I have a Dell XPS 15 with a Intel(R) Core(TM) i5-6300HQ CPU @ 2.30GHz, 2304 MHz, 4 Cores, 4 Logical Processors. I'm struggling with an issue where I'm running UserBenchmark tests and it's returning ...
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1 answer
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Weird turbo boost multipliers on Intel Core i7-8700

I've recently bought myself a new Intel Core i7-8700 and after installing it I noticed that it wasn't turbo boosting to the advertised ammount (4.6GHz) even when only one core was being used and the ...
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1 answer
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How can I decide the exact value for some parameters in computer hardware?

I am using two apps; Open Hardware Monitor and CPUID HWMinitor for monitoring various parameters of Motherboard, Processor, Graphic Card and Hard Drive. I noticed that value of a parameter in one app ...
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1 vote
2 answers
1k views

CPU speed running at 0.46GHz instead of maximum speed 2.2 GHz

My Lenovo laptop with an Intel i5 processor runs almost all the time at a very low speed (0.46 GHz) instead of maximum speed (2.2 GHz). I read related posts here and changed the power management ...
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-1 votes
2 answers
95 views

Computer speed is very slow due to drive C is full [closed]

How to deal with slow speed problem due to no space in hard disk. My C drive is almost full. Only 1gb left. Computer RAM is 8gb.
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7 votes
3 answers
6k views

How change CPU multiplier on Lenovo Intel processor?

I bought new Lenovo laptop a week ago. At first it works very well but then suddenly it started to work very slowly. After installing CPU-Z, I found that the CPU multiplier is set to 4 (from 28). I ...
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17 votes
5 answers
16k views

What does "cost per bit" mean?

I am reading William Stallings' Operating Systems: Internals and Design Principles (Seventh Edition), and a passage about memory hierarchy got me confused. What does the author mean when he mentions a ...
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-1 votes
1 answer
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Barring Heat, What is the Upper Limit of overclocking [closed]

Except for heat, what governs the maximum a CPU or GPU can be overclocked? Perhaps the speed of the bus? I'm a newb.
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1 answer
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CPU speed lower then it especially when stressed

I have 2 identical PCs, i7-4790k, 32GB RAM running Win7 pro. When idle one runs at 4.4GHz (multiplier x44) but the other one (the bad one) show speed of only 4.2GHz (multiplier x42). The matter worsen ...
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2 votes
1 answer
1k views

Dell E7440 CPU frequency does not rise above 1GHz

I had notice a strange problem on my Dell Latitude E7440. Sometimes the CPU frequency never goes above 1.0 GHz (even when running some cpu intensive program, such as MATLAB), and the computer runs ...
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2 answers
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Dual-channel Mismatching RAM Capacity [duplicate]

I recently bought a new gaming laptop that comes with a single Ripjaws 16Gb stick. I've heard that having dual channel memory can actually boost your performance by about 7% or higher. I'm thinking ...
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1 vote
1 answer
659 views

Calculate clock cycles multi-core CPU + include Turbo Boost

How do you calculate the clock cycles a cpu can deliver (include Turbo Boost)? I need to replace a server CPU by a new CPU (with lesser cores, due to license costs). So I want to be sure the new CPU ...
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0 votes
1 answer
156 views

Windows 8.1 64-bit, CPU is always on max frequency

I'm not sure this is the right place to ask such question but why not... I use a Toshiba laptop with Intel i5-4210U and my operating system is Windows 8.1 Pro 64-bit. For some months now, my CPU is ...
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1 answer
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Replaced FX 4300 with FX 4350, motherboard claims it to be incompatible

My friend got a FX 4350 and replaced his FX 4300, the gigabyte GA-78LMT-S2 motherboard is now claiming the old CPU is incompatible and it underclocks it, completely removing the purpose of using the ...
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2 answers
3k views

Why there are two speeds written on the CPU? [duplicate]

When looking on the details of some of Intel’s CPU, it looks for example like this: Intel® Core™ i7-6500U CPU @ 2.50GHz 2.59 GHz What is the meaning of each speed rate?
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Software needs Core i5-750 2.67 GHz, my PC has Core i7-3610QM 2.30-3.30 GHz; will it work?

My mobile computer has the following CPU: Intel Core i7-3610QM - 2,30 - 3,30GHz 6MB 45W "Ivy Bridge" As far as I understand is my computer able to speed up to 3,30 GHz? I want to play a game run ...
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