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

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Chrome takes about 10% of CPU without any activity from the user or an add-on

Here is the case. Chrome is not open (no chrome.exe appears on my task manager). I launch Chrome. Just a default empty tab. No default page. I click on the 'View background pages' and I see the ...
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1k views

CPU usage always around 40% because of wait-chain?

I am facing a very rare problem and it's causing much trouble. Whenever I boot my PC(HP 2000-2116tu, Win7, 4GB mem), there is a set of processes(legitimate ones and not virus), one of which starts to ...
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1answer
2k views

What are the net consequences of core parking?

What are the net results/consequences to core parking? As in -- aside from potential power savings, why would one want to have core parking enabled (or disabled)?
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113 views

CPU usage and speed of program

This is for my server. The scenario goes as follows: Computer A has a faster processor than computer B. They both execute the same program, but Computer A's CPU usage only goes up to 30% while ...
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3answers
154 views

Does modern software use different CPUs features selectively?

For example can one have an executable that uses features for Core 2 processors and then selectively use other features for an older processor? Or is it a requirement to compile a different ...
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1answer
316 views

Load average constantly 30+ but sites still loads fine?

My WHM current service status is Server load 31.53 (1 CPU) (red icon) Memory Used 36.48% (1,122,544 of 3,076,964) Swap Used 0.81% (8,540 of 1,048,568) I'm under the impression that if ...
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1answer
4k views

Dropbox causes high CPU usage on Mac OS X 10.8.2 (Mountain Lion)

Dropbox will occasionally use around 100% of the CPU. Why is this happening and how do I fix it? From searching around, it seems like it's not an uncommon problem.
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5answers
151 views

Are there CPUs with true shared memory? [closed]

I work on parallel algorithms and want to validate certain theoretic claims by runtime experiments. As it turns out, most (?) modern multicore CPUs use NUMA which inherently breaks many models to the ...
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2answers
1k views

Can VirtualBox affect SSE availability?

I'm doing some development in Linux running in VirtualBox. The computer is an Core i5 running Windows 7 (32 bit). According to the entry on Wikipedia, the CPU should support SSE4.2, but only SSE3 ...
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1answer
81 views

Remove heatsink to add CPU

So I added the heatsink/fan assembly to the Z77 mPower motherboard without ever adding the i7 CPU. *facepalm* How can I remove this assembly to insert the CPU? It has some plastic snap pieces that I ...
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0answers
67 views

Percentage cpu use for a particular job decreases over time in Windows 7

I have a multi-core workstation running Windows 7. When I submit a job to run on 12 cores, things go fine, but after some time the percent of the cpu the job occupies decreases from ~30% to 3% even ...
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1answer
10k views

How does windows “limit” the CPU (Power Options / Battery saving)

Can anyone explain how Windows effectively limits the CPU? Last time I tried some tricks to let my laptop not overheat, so I tried limiting the CPU to 70%. As for my suprise it stopped my laptop ...
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1answer
1k views

Intel Pentium E5700 and RAM?

I just ordered DDR3 PC3-12800 1600MHz, in a single 8GB module, and my motherboard has 4 slots but can support a max of 8GB of RAM, will my CPU be able to use this RAM to it's full potential? Will it ...
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3answers
757 views

where does Kernel reside on a multi-core system

Suppose I have a multi-core system, say 4 cores, and in this I pin 3 user process to a 3 CPU's. In such a case, where will the kernel reside? Suppose one of the user process make a system call, or ...
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1answer
353 views

Prevent i7 from overclocking while on battery

I've been bringing my laptop to tutorials and lectures lately and I've noticed sometimes my CPU clocks up from 1GHZ to 3.2 GHZ which cuts my estimated battery life in half, and spins the fan up pretty ...
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2answers
60 views

What kind of hardware information is accessible for computers on a network?

If a computer is connected to say, your job's network what kind of hardware information can be retrieved. More specifically can an administrator get a list of all the CPU's and there serial ...
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1answer
445 views

SLAT (EPT) support issue

I need SLAT support to use Windows Phone 8 Emulator on my PC, and so I need to buy a new laptop to get it running. I've searched for Intel, and found that all i3 - 5 - 7 series support SLAT. I've ...
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1answer
269 views

Is Biostar's CPU Savior preventing my homebuilt PC from booting? [closed]

My 11-year old daughter and I built her first PC today, but now that all the components are in place, the machine will only turn on for a second then it turns off right away. Possibly Relevant Specs: ...
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3answers
600 views

Can I upgrade my Lenovo T-520 i3 to an i7? [closed]

I have a Lenovo T-520 Core i3, with 8 GB RAM and 500GB HDD. It's not very slow as it is, but having been spoiled at work with a 128GB SSD, I would very much like to upgrade to at least 128GB SSD, but ...
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2answers
134 views

CPU Fan intermittently spinning to 100%

Lately my CPU fan has been roaring along at 100%, and I'm having trouble figuring out why. It will, at one moment, be running quietly, and the next moment blazing at 100%. I haven't changed anything ...
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1answer
3k views

Intel Atom D2500, 64-bit mode

I have an Intel Atom D2500 processor which the spec site claims it supports a 64-bit instruction set. However, cpuinfo shows this: # cat /proc/cpuinfo | egrep "(processor|flags|address)" processor ...
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1answer
456 views

How does clock speed influence processing speed? [duplicate]

How is AMD able to market it's microprocessors mentioning clock speed as less as possible? How does clock speed influence FLOPS? Which one should I check first, when I'm a cpu or graphics card, FLOPS ...
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2answers
7k views

Can I upgrade the CPU and RAM in my Toshiba Satellite laptop?

I have a Toshiba Satellite C855D-S5303 laptop with the following specs: Processor: AMD E-300 APU with Radeon(tm)HD Graphics GHz RAM: 2.00 GB (1.59 GB usable) I would like to upgrade the hardware ...
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3answers
2k views

What could cause my CPU fan to spin erratically?

I am trying to fix my old desktop that stopped working this past summer. When it stopped working, I was playing a video game and the computer simply shut off. Here is what happens now when I try to ...
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2answers
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Is it possible to use standard RAM with CPUs for registered ones?

According to this Wikipedia article for example the AMD Opteron 2389 is designed for registered DDR2 RAM (see the list at the beginning of the list of CPUs). My question is now: Can I also use ...
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2answers
4k views

Is base clock speed still relevant for TurboBoost processor performance?

With the advent of Turbo Boost, is it still important to consider base clock speed when comparing processors for performance, or can I look strictly at the Max Turbo Frequency? For example, using ...
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1answer
335 views

Can memory compatibility depend on the selected CPU?

Up until recently I always thought memory compatibility was completely dependent on the motherboard and the processor didn't make a difference when it came to memory compatibility. However, I was ...
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3answers
801 views

Laptop noise, CPU or Graphic Card?

I currently have Fedora 18, ATI Radeon HD 7730M and an i7 Processor on my laptop, it going crazy making lots of noise, how can i know what is making noise, if it is the ATI card, how can i unload it ...
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2answers
237 views

Processors cores over processor speed [closed]

Dual 5520 Quad-Core Xeon 2.26GHz with HT & Turbo(2.53 GHz) -vs- Single Quad-Core E3-1240v2 (3.4 GHz to 3.8 GHz) I run web hosting. I'm just wondering which would be more ideal. Personally, I am ...
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3answers
9k views

How to control the processor frequency of i5 in Windows 7?

On Ubuntu I can control the frequency of my CPU. I set it at the lowest value and then the fans are really quiet. Is it possible to do it in Windows 7 ? EDIT: The computer is a Laptop: Sony SVT 1311 ...
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3answers
89 views

Pc keeps shutting down for the first 10-20 minutes

My desktop pc keeps shutting down/freezing/rebooting itself (even in BIOS) in the first 10-20 minutes of activity, after that time it works properly. I looked into the windows event register but ...
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3answers
257 views

How to compare 2 CPUs?

I want to compare (not precisely, no accurate benchmarking, just the big picture) two CPUs, the one of my main gaming PC (built in Feb 2011) and the one of my newest PC (built last week). One has an ...
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1answer
992 views

ffmpeg doesn't use maximum cpu power

I purchased two new cpus E5-2650: 8c * 16t per core = 128 * 2 = 256 - max number of threads but it looks like ffmpeg doesn't use maximum power of cpu even though i'm running it with -threads 0. ...
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1answer
463 views

Dual processor: is the memory shared?

I was browsing the system76 page for servers https://www.system76.com/servers/model/jacp8 and i realized that when u check the option for a second processor you must choose memory for that processor. ...
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2answers
204 views

Requirement for simultaneous 1080p video streaming

I want to stream video of 1080p resolution to my consoles (2x Xbox 360 and 1x PlayStation 3) and I want to stream it simultaneously. What is the minimum requirement of processor and RAM for that ...
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2answers
131 views

Need to know about the RAM and the processor relation

Currently I am using XP 32 bit with 4 GB RAM and Core i3 processor. I am using this system for the multi PC. Now I wanted to upgrade my CPU with the 8 GB RAM or even more and also use Windows 7 64 ...
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2answers
94 views

Why my quad core process cannot give its all? [closed]

I have Firefox with Windows 7. My Firefox always has a problem with Flash. It will make one of the four cores in the processor busy. It is OK if it keeps one core busy, however it will also slow my ...
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4answers
2k views

How do I prevent the motherboard and CPU from overheating when playing a particular game?

I have a pretty decent system. However, when I play a certain computer game (Warcraft 3), the temperatures on my computer go up tremendously as shown here: I have seen the motherboard temperature ...
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1answer
281 views

Dell 412 motherboard support Intel Core 2 Quad Q9550 processor?

Does anyone knows if a Dell 412 motherboard support Intel Core 2 Quad Q9550 processor? I have now a Intel core 2 Duo E6850 and 12GB internal memory and it works great.
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512 views

Why does my CPU not max out

So when I am doing something like calculating a file integrity hash, converting a video, compressing some files etc. why does my CPU not reach 100% usage, instead it happily jumps around from 0% to ...
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2answers
1k views

Why don't we have 33-bit CPUs? [closed]

I have seen that CPU's and operating systems have moved upwards in terms of bits from 8-bit to 16-bit, to 32-bit and currently to 64-bit. I understand that this change is to increase the maximum ...
0
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2answers
523 views

bzip2 randomly launches on OS X 10.6.8

Is there an application for OS X that will let me view what parent process is launching bzip2? It randomly opens up and eats a massive amount of CPU so it sorta lags the computer. I'm not sure what's ...
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3answers
12k views

Should I disable CPU fan error message and how?

I have just completed my first "build" consisting of: ASUS P8Z77-V-Deluxe motherboard, Intel i7-3770 processor, Coolermaster Hyper 212 EVO CPU cooler. Each time I boot the computer, the ...
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1answer
331 views

XP freezes every second

I'm experiencing a problem where XP freezes completely for a fraction of a second, every second. The mouse doesn't update, music stops, video stops - and then suddenly resumes. I can't see anything ...
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1answer
2k views

What features of processor is important for programming? [closed]

I want to buy laptop for programming in Java. And I don't know which features of processor is more important for programming (not gaming!) purposes. Is Frequency (MHz) important? Is L3 cache (KB) ...
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1answer
102 views

Dual socket with single CPU power connection

Is it harmful for a processor and/or motherboard if the motherboard is a dual socket motherboard, only one socket is filled with a (compatible) processor, but two processor power plugs are plugged ...
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1answer
107 views

Windows Sleep Mode - Hardware not booting up

I have a problem with my computers. It's mainly on my ASUS Eee PC Seashell 1215n Laptop, but other people I know have said that this happens to them too. Sometimes when I wake up my laptop, it turns ...
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0answers
78 views

Pstate (underclock) on single core hyperthreaded cpu

In Ubuntu, I can underclock the CPU using the CPU freq applet. My netbook is a Intel atom n270, basically single core with 2 "virtual cores" due to hyperthreading. I can underclock one of these ...
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2answers
3k views

Is it possible to upgrade the AMD E-300 APU on a laptop?

I read that this processor is BGA. That would mean that it is soldered to the motherboard? Can an average laptop technician replace it? This processor is very slow, it scores only 600 on the Passmark ...
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1answer
627 views

Does more battery and higher processor affect on battery life?

I'm planning on getting a customized macbook air 13" .. It says it should last 8 hours wireless browsing which is reallygood, but it didnt say whether on the default customization or anything .. So ...