A CPU (Central Processing Unit) is the chip responsible for actually "doing" most the instructions given to a computer.

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What is this logic component?

This is from http://www.cis.upenn.edu/~milom/cse240-Fall05/handouts/Ch05.pdf , slide 9. From this diagram, I recognize 0001 as the opcode or ADD. I recognize 011, or 3, as the source register and ...
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i5-4960k 3.5GHz running at only 0.8GHz

I recently built a gaming PC (detailed specs listed below), however the CPU seems to be extremely limited. Specs: MSI z97 Gaming 5 Motherboard Intel i5-4960k 3.5GHz CPU MSI GTX 970 Graphics Card 8GB ...
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1answer
12 views

xfx750i support for intel pentium G3240

I have a XFX750i Motherboard and want to upgrade my CPU to Intel Pentium G3240, or Intel Pentium G3580. So my question is whether my Motherboard will support either of these CPUS??
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50 views

Which piece of hardware in my desktop is failing?

Almost 2 years ago I built a custom desktop. This week it seems to be becoming inoperable. It's a dual boot system capable of booting to Windows 7 or Windows 8.1. When I sat down at it the other ...
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1answer
20 views

What hardware is needed to support ECC UDIMM / ECC RDIMM

There are 2 types of server RAM's UDIMM unbuffered (or unregistered) ECC (Error correction) RDIMM registered (buffered) ECC memories. The main difference between them is that UDIMM are using CPU's ...
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Does MotherBoard limit RAM?

http://www.findlaptopdriver.com/hewlett-packard-09e0h-mainboard-specifications/ ^^ That page lists the specs of my motherboard. It says that it can support 4 x 240-pin DDR2 DIMM slots Supports DDR2 ...
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17 views

stopping windows from undoing overclock settings

I have managed to overclock my CPU from 2.5 to 3.0 GHz, my BIOS says so at the top. But when I load coretemp after windows boots, it says my CPU is only at the original 2.5GHz. Is this just coretemp ...
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31 views

High CPU usage on Linux

I have a process that is called gis taking 100% of the cpu (sub-cpu) on one server and 3 % on another similar server (running as HA-pair) All other servers have are using 2-3% of cpu as well Is ...
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How can manufacturers put the specs of overclocking speeds when the whole point of overclocking is it's not known? [closed]

Some retailers really play up the overclocking capabilities of CPUs. For example, in the advertisement for this Intel Core i7-5820K processor, it says it can be overclocked to 3.6 GHz. How is that ...
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74 views

Laptop shut down randomly when temperature is low

Basic info of my laptop: 3.5-year-old Samsung RF411, Win7, no hardware change since purchase, Windows disk & memory check all OK, passed memtest86+ test. Recently, it randomly shuts down/blue ...
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7 views

Processing A Queue Of Messages Slow (Centos 06) [closed]

I am new to programming and servers. However I have a VPS with 2 X 2.2GHZ cores and 2GB RAM. Its a CentOS 6 with cPanel I have a simple PHP script that reads messages from a queue (via stomp). Each ...
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10 views

Why does sensors-detect only see my coretemp-isa-000 adapter?

I am running Kubuntu 14.04 with an intel i7-4790k cpu and ASRock extreme 6/ac motherboard, but sensors-detect does not give me anything but the core ISA adapter. I know I can sense fan speeds on the ...
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38 views

How do I identify counterfeit hardware?

A peer recently told me to be aware of counterfeit Intel CPUs. I built my PC just last year and now I’m afraid I might be affected. How would I discover counterfeit hardware? My PC: GPU: Asus GTX 780 ...
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2answers
74 views

Going silent: will an SSD with a newer but 'slower' CPU run as fast? [closed]

I currently have a relatively old (2009) Shuttle XPC with an AMD Phenom X2 550 3.10GHz and 2 SATA HDD drives. I use it as my work computer, usually running a couple of browsers, XAMPP, 2 or 3 ...
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1answer
18 views

When MS offers a UPDATE choice between [x64 System] and [blank] are they talking about OS or CPU bits

When planning to install a UPDATE to repair a conflict the Microsoft knowledge base offers a choice of two types. Notably one intended [for x64-based system] and the other a generic [] this is CPU ...
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24 views

System Interrupts and Antimalware Service Executable eating up CPU

I have Windows 8.1 Pro N x64 on my Toshiba Satellite L505D-S5965 and there are two processes in Task Manager that is eating up my CPU. System Interrupts take up 1%-29% of CPU Power (It changes a lot) ...
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38 views

WPA shows NIC driver DPC fragment running for 232 milliseconds

I'm stress testing my UDP proxy on a machine with 8 logical CPUs. At around 14 thousand UDP clients, one of the CPUs (CPU 4) starts spiking and UDP throughput (as shown by Task Manager) plummets to ...
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22 views

CPU Load + Frequency per core in linux terminal?

I am doing scientific computing and I need to keep an eye on the cpu frequency and load of each core (there are 2 cores, on Ubuntu 14.04 w/ Gnome3). I can see the frequency with this bash script: ...
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21 views

Is my motherboard defective?

Last month I bought a new Esonic motherboard with intel G41 chipset and a 4GB DDr3 1333Mhz Ram and installed my old processor, Intel Dual core E2140 (1.6 Ghz, 800Mhz FSB ) in it. Now after starting ...
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33 views

Disable Badly-Designed Form Element

One of our suppliers has a badly-designed website. On this website, there is a HTML select tag which has, over the years, grown to over 10,000 options long. This is apparently enough to cause large ...
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Intel(R) Xeon(R) CPU E5-2670 0 definition

When I look at the output of /cat/cpuinfo in linux, I get the following: Intel(R) Xeon(R) CPU E5-2670 0 as part of the result. What does that final 0 indicate?
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BIOS Update Before Installing CPU

I finally got around to builing a (shiny) new machine. So do I need to update BIOS before installing the new CPU? New hardware components include, Motherboard: ASUS H81M-PLUS CPU: Intel Core ...
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1answer
30 views

Seemingly random reboot during OS installation

I've recently changed my mobo and as usually in this case my OS wouldn't boot properly(I got past login, then, after few seconds, reboot). I proceeded to fail-safe mode, backed up my data and begun ...
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High latency, High CPU Interrupts per second 60K/Second causing FPS spikes in games

CPU Profilling Screenshot: i.imgur.com/10ZJNN9.png LatencyMon i.imgur.com/KJbaS3p.png Battlefield Screenshot: i.imgur.com/chpYIjN.jpg Processes: i.imgur.com/wDOpxtq.png 1.3ms of execution time on ...
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My cpu claims it is 2.53 ghz but never reaches it. why?

I run cpu burner, and set c state limit to c0. all power savings are disabled and i set multiplier to 20T which is the only allowed turbo multiplier on throttlestop. maybe there could be another ...
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CPU fan speed not increasing while in game

I have a weird CPU fan issue - as long as I'm playing a game (Cities: Skylines), the CPU fan keeps spinning at the usual RPM while the CPU temperature starts increasing. As expected, the CPU overheats ...
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43 views

Why is my Lenovo G500 laptop computer running slowly?

The one I’m currently using is a Lenovo G500, Intel Core i7, 2.10 GHz, 8 GB RAM, 1 TB HDD, Windows 8.1 64-bit, AMD Radeon HD 8570M, Intel HD 4000. The problem is that it is slow. It lags, even if I ...
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where can I find intel opcodes

Where can I find all intel opcodes? I'm talking about actual values of cpu asm commands, 0s and 1s of the keywords such as MOV, JMP, CMP etc. Are they available to the public?
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cpu fan turn on and off in a loop

Suddenly my processpr fan started turning on and off in a loop , it starts for 1-2 sec and turns off and sometimes it turn on after 6-7 loop of on and off their is still no display , few mins ago the ...
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what does CPU% means in `ps auxf` for processes with parent/child relationship?

When I use ps auxf to display process information with ASCII art process hierarchy. Processes with parent/child relation is listed as below. USER PID %CPU %MEM VSZ RSS TTY STAT START ...
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PC shutting down every 30 minutes

I changed my graphics card and PSU today (went from 650Ti to GTX 770 and Thermaltake PurePower 430W to OCZ GameXStream 600W). I plugged these components in, at first I didn't fit the 20+4 pin ...
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1answer
67 views

Intel Turbo Boost temperature safety limits? [duplicate]

I have read many posts about Intel turbo boost technology and I am still a little confused. I get how it works and I even went as far as turning it off but it didn't seem to do anything. When I ...
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Which CPUs support TSX, with the erratum fixed?

With the discovery of a bug in the implementation of TSX, all CPUs designed before that discovery have the extension disabled via microcode. Half a year later, I haven't found much about new ...
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Why does a CPU have a clock? [closed]

Is it not possible to design a CPU without a clock? Is the only reason is it necessary is to measure the processor speed? What are the other benefits of having it inside the CPU?
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VirtualBox is using more processors than allotted

I have a VirtualBox Windows VM configured to use 3 out of 4 processors (see screenshot), but when my computer froze (see description below) recently, I used top and discovered that the VirtualBox ...
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1answer
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Processor and RAM [duplicate]

So, for the past couple (Around 8?) of years, I have been using a 1.6Ghz Dual-Core CPU( I know, it's terrible, I tried upgrading, but it's an AM2), with 4GB of RAM, I recently put in 4 more GB of RAM, ...
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33 views

CPU is weak, is it CPU or motherboard? [closed]

My laptop, an Alienware M17xR3 started to run slowly lately. What happens is that sometimes it runs well, and sometimes not, I did run 3d mark benchmark and while mostly I get low results it happened ...
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How to control the CPU clock speed? [duplicate]

I have an i7-3612QM@2.1GHz in a Dell Inspiron notebook and now running Windows 10 Technical Preview. The experience described below was also seen in Windows 8.1 previously. I have been monitoring ...
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CPU temps conflict

I'm using an MSI 970 Gaming Motherboard along with a Phenom II 1090T and a Corsair H60i. Naturally I'd pull up BIOS and read temps from there but the water cooler kicks so well by the time I reboot ...
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1answer
32 views

65W TDP CPU in a Socket with a 95W TDP CPU

I have a PC which currently has a Pentium D 945 (http://www.cpu-upgrade.com/CPUs/Intel/Pentium_D/945.html) Which has a TDP of 95W, and I would like to upgrade to a Core 2 Duo E4400 ...
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31 views

How to limit the fan speed to X until temperature Y? (or similar)

Even though my laptop is cold, whenever I plugged it in, fan speed increases. How can I manually override the settings so that the fan speed is limited to X until temperature Y? (or something similar) ...
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cpu temp vs core temps

i have an amd phenom quad that reads idle "core temps" around 85C while the bios is showing "cpu" temp around 40C (speed fan, core temp, etc all show the 85C core temps at idle) .... so far my pc has ...
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1answer
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average load does not get lower than one

I have a strange situation when with seeming low cpu load average load is always higher or equal than one output from htop: 1 [|||| ...
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What features of a Xeon E3 processor will not work on an H97/Z97 chipset (and vice versa)?

LGA1150 Xeon processors appear to be supported on consumer motherboards with LGA1150 sockets. Xeon chips lack an integrated GPU, of course, so onboard video can't be expected to work in this ...
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Turbo boost is on even when CPU utilization is at 0 percent

My new server is behaving strangely, it seems that turbo boost is always on even when there's no utilization. The OS is windows server 2012 r2 and power option is set to balanced with default BIOS ...
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How can I map 4GB of RAM memory to 4GB CPU address space [closed]

I'm confused with a situation where there is 4GB of CPU address space and I have 4GB of RAM memory. Now is it possible to map this whole 4GB of RAM memory to CPU address space and if so, then where ...
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36 views

Running Linpack on Linux High performance computer

I am trying to do some benchmarks on Linux HPC machine which specs are as following Total CPUs: 160 cores using latest 16C AMD Opteron Processors Total main memory: 640 GB of 1600MHz Total GPUs: 1024 ...
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How to check if Xeon sandy bridge be replaced by ivy bridge

We are running algorithms that would benefit from faster RAM. We currently have a Dell T5600 workstation with 1600mhz RAM, but with 2 CPUs that are limited to 1333 (Xeon e5-2620). The cheapest ...
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33 views

computer freezes 5 - 10 minutes after boot

I am running Windows Vista, for 3 years I have had no problems, not one. Now - after the second reformat I have ever done on it, it freezes after a seemingly random amount of time after boot. It ...
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Ways to know whether my Laptop fan is working or not

On my Laptop the CPU Core Temps. have been relatively high recently (I think) and so there's a nagging doubt in my mind whether any of the internal fans have failed. What are other alternative ways to ...