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Questions tagged [cpu]

The part of a computer responsible for performing computations, often referred to as a processor.

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Intel server board S2600WF - nothing on screen

Intel Server Board S2600WF When i boot up my server i can hear beep signals but nothing on the screen. Connected via VGA, removed all hard drives and external network card. The led DSA2 & DSA4 are ...
Randy Marsh's user avatar
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19 views

Electric noise when changing power governer

I use arch linux on IdeaPad L3 15IML05 laptop the cpu driver in use is intel_pstate as stated here: ~ λ cpupower frequency-info driver: intel_pstate CPUs which run at the same hardware ...
white-hat-er's user avatar
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Understanding Geekbench 6 scores of processors made for smartphones vs processors for computers

Recently, I've become confused about geekbench 6 scores. Arm based processors always are more efficient than x86 processors. And for processors made exclusively for laptops and desktops, I understand ...
Tasnim Ahmed Ibti's user avatar
1 vote
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I can't set max temperature using `lm-sensors`

When I try to update lm-sensors settings: chip "coretemp-isa-0000" compute temp1 99,100 compute temp2 100,99 compute temp3 @-2,@-1 compute temp4 @-1,@-2 after service lm-...
porton's user avatar
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CPU Is on Limp Mode, How to Fix?

I own a 2019 HP Omen Laptop (Intel i7-10750H, Nvidia RTX 2060), and my CPU is not functioning properly. This laptop first developed issues when I removed the cooling fans from the CPU and GPU to clean ...
user1937995's user avatar
1 vote
1 answer
41 views

CPUs with lower IDs are used more often

I have intel i9-13900k it is 8 regular core with threading and additional 16 efficiency cores. I am running with kernel 6.9 on ArchLinux I have noticed the CPUs with the lower ID’s have high percent ...
user63726's user avatar
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Software on Windows crashing/OOMing with RAM well below 100%

I have a Lenovo ThinkPad X1 Carbon (4th gen, 2016), and lately while working I've been noticing Chrome and PyCharm intermittently crashing. Usually it seems like like a CPU spike or something causes ...
Nathan Wailes's user avatar
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CPU has only 2/3 performance despite same amount of cores and same frequency

I have 3 PC builds with a Ryzen 9 3900X for mining. Two of them run at a speed of 95 it/s while consuming 150-160W. But one of them with roughly identical specs runs at 65 it/s while consuming around ...
Artur Bieniek's user avatar
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i5-13600K + ASRock Z790M PG Lightning/D4 - powers off and reboots during idle state

(I guess someone well aware of Asrock bios configuration may help me ...) Intro: After 1 year of flawless work my self-assembled PC got problem with random power off and reboot. There was no software ...
Xtra Coder's user avatar
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Temperature vs Power has strong positive correlation

So, I just bought super high RPM fan for my laptop, it's worked fine, it reduced temperature. I noticed multivariate time series real time graph between temperature and power that they have similarity ...
Muhammad Ikhwan Perwira's user avatar
10 votes
9 answers
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Does Windows 10's portability limit OS features?

From what I can see Windows 10 can support 2015 CPUs, and I'm aware that all x86 architecture uses similar intruction sets, but surely there's features that are missing if it supports that many older ...
WaveCave's user avatar
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What exactly do we mean when we say 64-bits CPU? [duplicate]

Finding some mixed answers on this topic. It seems like it either means how many wires there are on an address bus (so 64 bits would mean 64 wires so we could address 2^64 bits) or how much data we ...
WaveCave's user avatar
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How to make All Threads Run Low/Idle CPU Priority?

I want to set all threads or .exe to Low CPU Priority in Task Manager so that their CPU-usage doesn't interfere with my game and make my gameplay microstutter and cause some input delay from keyboard. ...
Fr V's user avatar
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1 answer
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AMD processor specs? [closed]

I was considering switching to AMD processors, but I hit a road block, I can not find product specifications for many of their processors. For example, a search for [CENSORED TO PREVENT OFF-TOPIC ...
Remi Arntzen's user avatar
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1 answer
144 views

Why is my CPU utilization limited to 0.4 GHz?

I've seen other similar questions, but none meet my exact circumstances so I wanna make sure I do the right thing before investing money in a new fan/charger or potentially messing something up trying ...
Cameron Mullis's user avatar
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Games get PC to max CPU usage

I notice it primarily when starting the MTG Arena client on my desktop: Possibly as an after effect it also happens on other games I play like Gloomhaven PC. Especially the latter has always been one ...
kbd's user avatar
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2 answers
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Instructions per Cycle (IPC) vs Frequency

I'm working on core frequency scaling experiments and I see that with the increase in core frequency (all other stuffs untouched, for example ddr frequency is kept same), I see decrease in IPC values. ...
srccode's user avatar
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70 views

Intermittent random spikes in CPU load on Ubuntu system

Running Ubuntu 22.04 and have more recently noticed (~1 month) random spikes in CPU load that have caused overall system sluggishness (eg, spike from ~1.3 to 4/5/6/7+, growing steadily without ...
Chris's user avatar
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0 answers
49 views

Intel CPU frequency limited after a while under heavy multithreaded load

I have a Linux Mint system with an i5-13600 CPU and an all-in-one watercooler on a MSI MAG Z790 Tomahawk motherboard. I've noticed that when I put a heavy computational load on my system (like ...
Monkj_'s user avatar
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High kernel CPU usage from CcUnpinRepinnedBcb

"System" regularly takes 100% CPU on one core of my PC, so a little over 6% total on average. This causes some extra heating and battery usage. In trying to figure out why, I checked the ...
Brad's user avatar
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High "System" CPU usage; unaccounted for Memory usage

I fresh reinstalled Windows 11 a couple months back, and for a while now it seems like there's some sort of memory leak (?) that causes high CPU usage by the "System" process, high memory ...
wolfinabox's user avatar
1 vote
0 answers
70 views

PC won't post with 4 RAM sticks

I have a few question if possible. I have an old system which has the following components: CPU: i7 6700K, motherboard: Asus H110M2 D3, and a GTX 1060 3GB. I wanted to upgrade the RAM to 32 GB (since ...
PirateLemon's user avatar
1 vote
1 answer
161 views

kernel messages + DS CPU bug present and SMT on

what is the meaning of the following messages that we get from kernel messages # dmesg | grep "MDS CPU bug" [ 0.432893] MDS CPU bug present and SMT on, data leak possible. See https://...
King David's user avatar
0 votes
1 answer
714 views

Why is Facebook consuming a lot of computer's resources?

I have a problem when using the web version of Facebook. My specs are: CPU: Intel Core i7-11800H RAM: 12GB DDR4 GPU: RTX 3050 Laptop 4GB (No MUX Switch) All drives are SSDs An image of task manager ...
JustAPie's user avatar
0 votes
1 answer
25 views

asus tuf gaming x570 pro (wifi) cpu pin

I just bought asus tuf gaming x570 pro (wi-fi) ant it has 8+4 cpu pin but my power supply has 8+8 pin. Will it work, if i put only 8 pin? Or just plug 8+8 to 8+4 pin
Unlex's user avatar
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1 answer
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Linux powersave governor not controlling CPU frequency as expected (many cores still at 3GHz) [duplicate]

I'm want to limit CPU activity on a Thinkpad P1 to extend battery life and prevent fan use. My Linux kernel is 5.15.0-43-generic and the distribution is Ubuntu 22.04 (Jammy). The processor is a Intel(...
MRule's user avatar
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1 answer
92 views

PRO B550M-P GEN3 MB W/ RYZEN 7 5700X CPU

I'm hoping someone can assist me. I've upgraded my MB & CPU to the following PRO B550M-P GEN3 MB W/ RYZEN 7 5700X CPU. I've also added more RAM from 32 to 128. Along with a new 700W PSU. I'm ...
GSB's user avatar
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Why does online retro game emulation run extremely poorly on Microsoft Edge on my Desktop PC?

OS Name: Microsoft Windows 10 Pro Processor: Intel(R) Core™ i7-10700T CPU @ 2.00GHz, 1992 Mhz, 8 Core(s), 16 Logical Processor(s) RAM: 16.0 GB Version: 22H2 I want to play the Sega CD version of The ...
Brad Harper's user avatar
2 votes
3 answers
65 views

What is a "thread" in computing physically?

I was watching this video about multithreading from Computerphile and at 10:03 it shows this: where T1 and T2 are threads, and under them are machine instructions. So, is a thread nothing but a ...
user1783484's user avatar
0 votes
1 answer
80 views

What differences are between ""multiprocessor" and "parallel processors"?

I was wondering what differences are between ""multiprocessor" and "parallel processors", in general? I saw them in Stallings' Computer Organization and Architecture (see the ...
Tim's user avatar
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112 views

After unplugging my PC from the outlet, sometimes it won't boot for a long time

Before I go to sleep, I unplug my PC from the outlet, due to concerns about power spikes or something of the sort frying my computer. However, sometimes, when I wake up and plug it back into the ...
davi's user avatar
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0 votes
1 answer
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Windows 10 22h2 Processor Compatibility

My employer has a number of PC that still run Windows 7 (let's not get into why...), it will be necessary for us to upgrade each of these PCs to Windows 10 22H2 very soon. If I reference Microsoft's &...
BrianS's user avatar
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3 votes
0 answers
109 views

Intel Virtualization hidden in BIOS

I am trying to enable virtualization on my Debian system. The command sudo modprobe kvm-intel fails with Operation not supported error. Processor: Intel Xeon E31260L Motherboard: Intel Serverboard ...
Rockrid3r's user avatar
-1 votes
1 answer
65 views

How to reset power settings on Windows 11?

On my company Lenovo L13 (i5-1145G7 2.60GHz, 16GB), the fan never stops, even when CPU temperature is just at 41C. It's been MONTHS of non-stop fan, nobody knows what is going on, I am getting mad. ...
georgh's user avatar
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19 votes
1 answer
3k views

What is the best way to identify what caused a CPU spike?

In Windows Task Manager History I can see that there was a CPU spike and my computer freezes. And I can see when I sort the view on highest CPU percentage which processes take most of the CPU. But ...
Z0q's user avatar
  • 407
0 votes
0 answers
119 views

How to diagnose a MacBook Pro (2019) CPU spiking periodically?

My wife has a MacBook Pro (MacBookPro15,1) an it is running macOS Sonoma (14.3). She got it in 2019. It has an Intel i9 2.3GHz CPU and a Radeon Pro 560X and 16GB of RAM. She doesn't do a whole lot ...
user3271408's user avatar
8 votes
10 answers
6k views

Think 8086… Is the BIOS permanently stored in memory, or is it copied to RAM?

I have a question about how the BIOS is loaded and executed. I know that the CPU starts executing the BIOS at 0xFFFF0, but how is the BIOS there? Is the BIOS hard wired to that address on the CPU, to ...
Vinny's user avatar
  • 91
2 votes
0 answers
33 views

Selenium tests on Dell precision 5550: Certain thermal settings trigger "chrome not reachable" error

For our web based applications, we have created automated end to end tests. Those run in parallel, so we have a usage of nearly constantly 100 % on all CPU cores over more than 14 minutes. On complete ...
Adrian Dymorz's user avatar
1 vote
0 answers
145 views

Why does TPM think I installed a new CPU?

I disassembled then reassembled a computer, I rebooted and got a message saying that I installed a new CPU or reset the NV structure. I don't really think I did either, there was only one RAM slot and ...
The Floating Brain's user avatar
1 vote
0 answers
417 views

'System' process pins 1 CPU/thread at 100%

I have a Dell XPS 9500 laptop, 6 cores/12 threads. Recently I noticed that the system task is constantly running around 18% CPU, and as shown in the attached picture, it's actually consuming 100% of 1 ...
Neil's user avatar
  • 151
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0 answers
65 views

Who is right about maximum CPU clock on AMD Ryzen 5 7640U?

Running Ubuntu 23.10 on AMD Ryzen 5 7640U I get: paul@box4x4:~$ lscpu -ae CPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE MAXMHZ MINMHZ MHZ 0 0 0 0 0:0:0:0 yes 4971.0000 400....
Paul Jurczak's user avatar
1 vote
0 answers
60 views

Does Ryzen 5 7640U CPU have SMT always enabled?

I'm having a hard time finding data sheets for AMD CPUs, so I decided to ask here. Motherboard manufacturer ASRock claims that AMD Ryzen 5 7640U CPU doesn't allow to disable SMT. Is that accurate? ...
Paul Jurczak's user avatar
1 vote
0 answers
37 views

Is this a standard numbering scheme for logical CPUs?

This is a listing from Ubuntu 23.10 on AMD Ryzen 5 7640U: paul@box4x4:~$ lscpu -ae CPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE MAXMHZ MINMHZ MHZ 0 0 0 0 0:0:0:0 yes 4971....
Paul Jurczak's user avatar
5 votes
2 answers
840 views

High CPU usage realted to "nvlddmkm.sys"

On a notebook one CPU core is constantly at 100 % which causes noise, reduced performance and high power consumption. The notebook has both an integrated GPU (Intel UHD Graphics) and a dedicated one (...
Adrian Dymorz's user avatar
0 votes
1 answer
380 views

How to find cpu spike for the past 2 days?

I was trying to find the linux command to show the cpu spike for the past 2 days. I was able to get the CPU% with sar command sar -f /var/log/sa/sa$(date +%d -d "2 days ago") but it is not ...
Sameer's user avatar
  • 3
1 vote
1 answer
238 views

Tell Linux scheduler not to use certain CPU cores at runtime?

I want to absolutely remove certain CPU cores from Linux scheduler. All I found on the Internet is adding isolcpus to grub with rebooting. But it there a way to do it at runtime (without reboot)?
budoattack's user avatar
2 votes
1 answer
2k views

Adobe Premiere Pro doesn't use GPU when I'm editing a project

I'm using as a GPU the Nvidia GeForce GTX 1060 3gb. When I open a project (selected (CUDA) for the aceleration rendering) and I'm editing,a simple Zoom effect has a red zone in timeline, and when I ...
Rodian's user avatar
  • 21
1 vote
2 answers
137 views

Core i7 3770k not working on chinese motherboard Machinist B75 Pro U5

I have a Chinese manufactured motherboard Machinist B75 Pro U5. According to the manual (very hard to find by the way, didn't comes in the box): "Supports Intel Core i3/i5/i7 2th or 3th ...
quakeglen's user avatar
  • 121
0 votes
0 answers
72 views

Why is faster pc i5:ram 4, ssd 256, core 4, then laptop i7: ram 16, ssd 500, core 10?

I have such a case and maybe you can help me, what is the reason? I did a test, reading an excel file (310 MB) in python (pandas). Laptop(IdeaPad Slim 5 16IRL8): i7, ram 16, ssd 500, core 10, 2.4 ghz, ...
Lucas Tornike's user avatar
0 votes
1 answer
326 views

Are there any negative effects or harm to processor if you reduce the "Turbo Ratio Limits" values for a laptop which has a locked processor?

I have an i7-8550U processor in my laptop, which is a locked processor. And I'm using Turbo Ratio Limits feature in ThrottleStop software to limit the Turbo Boost clock speed of my laptop processor to ...
Vikas's user avatar
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