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

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“Load average” stuck on 7.0

I'm using gentoo and anytime I do uptime, my "Load average" is stuck at 7.0 across the board. When using top or htop or dstat the CPU usage is always idle. The computer is used to run a Java program ...
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424 views

How distinguish between multicore and multiprocessor systems?

This is a list with performance of some CPU's on a benchmark data. I cannot understand how to distinguish between multicore systems from multiprocessors ones. Do multicore systems have more than one ...
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2k views

What is the CPU Word size?

I have searched everywhere on the internet and i cannot find out how to find the word size of a CPU. Can someone either show me where to look or tell me how to find out. These are the CPU's in ...
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232 views

Disable CPU halt state to prevent BSOD/KSOD

I have recently had problems with my Windows7 desktop bluescreening several times per day (with many different STOP codes) and occasionally blackscreening. Because it is still under manufacturer's ...
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1answer
613 views

Power management in Solaris 11 using poweradm?

In Oracle Solaris 11.1, pmconfig had completely vanished, and poweradm is available instead. While pmconfig was still available, I used to... Auto suspend : Let my server suspend from 2 AM through 7 ...
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3answers
14k views

Bitcoin mining with Integrated graphics

I have Intel HD Graphics Family I thought this would be powerful to mine bitcoins really well. Is this even a GPU ? I used different miners (DiabloMiner, OpenCL, cgminer...) which all use just the ...
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2answers
179 views

Are all Socket F Opteron processors interchangeable (within TDP limits)? [closed]

I have an old HP ProLiant DL145 G3 server I'm now using mostly as a budget 3D rendering node. Right now it has two Opteron 2218 processors (each is dual core). I'm looking at picking up a couple ...
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1answer
347 views

How does a process “pick” which core to run on?

How does a program "choose" which core to run on? It was my understanding that the operating system determines which program gets processed on which core. APPLICABLE EXAMPLE Firefox has suddenly and ...
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1answer
297 views

How do I tell if issues are caused by a faulty motherboard or Core i7 CPU memory controller?

My computer has an issue that results in random crashes. When I run memtest I get the same errors almost immediately (pictured). They always occur at the same addresses even if I swap the sticks ...
2
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1answer
730 views

CPU Maximum Frequency stuck at 59%

I have just installed a Windows 7 32-bit on my HP Compaq nx6310 notebook. However, once I boot into Normal Mode, I receive 2 Kernel-Processor-Power Event ID 37 warnings in my event log indicating that ...
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2answers
4k views

Windows 8 100% Real CPU Usage by System Idle Process

The problem seems easy at the first glance but is a little more complicated. The machine (Lenovo laptop) has Windows 8 Pro, a Intel Core i7 and all 4 cores run at 100% . The fan runs at full speed the ...
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1answer
666 views

CPU overheat after cleaning the fan

I have decided to clean my computer. I opened it, removed the fan from the CPU and cleaned it. It was jammed with a lot of dust. After I put it back, and it rotates much smoother and better, I started ...
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How can I track and log CPU and memory usage on a Mac?

I know I can use Activity Monitor (as well as a slew of 3rd party applications) to monitor the usage of RAM and CPU on my Mac. However, I want to capture a log over an amount of time so that I can ...
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1answer
94 views

Difference between hardware before and after laptop clean up

I recently took my laptop to get cleaned and I saved the output of the command lshw to make sure the hardware was not changed. After I got it back, I ran the lshw command again and did a diff, and I ...
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0answers
112 views

No display on monitor. POST?

So I have looked through what feels like every single forum and post that could exist about my problem and none of them are to my exact specifications. So here goes. I spilled a sticky drink onto my ...
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2answers
436 views

Can a virus mess with a system's critical temperatures or voltages?

This is somewhat related to this question but at a less serious level - one that causes frustration rather than permanent damage. From programs like CoreTemp and Speedfan, it is clear that there are ...
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1answer
160 views

How to find detailed laptop specs?

I'm having a hard time finding all the minor specs of different laptops. Most laptops just specify only few things like CPU, RAM , Graphics card, and few other specs in a generalized way. It gets more ...
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3answers
132 views

Am I doing the right thing to overclock this?

This is a follow up to this question. I bought the motherboard mentioned in the question and a 2133 MHz RAM that does figure in the memory compatibility sheet of the board. After assembling it runs ...
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1answer
876 views

crackling/beeping/distorted audio on my Dell Inspiron after one day running

I have a Dell Inspiron laptop with Windows 7 Professional 64-bit. I got it a little less than 2 years ago. For the last year or so I've noticed that when it's on for a little while (a day or two, ...
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1answer
232 views

Could a laptop switch off even if it isn't overheating?

Recently, my laptop has begun to randomly switch off. I assumed it was overheating, but monitoring the cpu temperatures doesn't seem to indicate this. It stays around or below 50*C in normal usage, ...
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2answers
2k views

What are the drawbacks of using an integrated GPU for non-gaming purposes?

I'd like to know the advantages and disadvantages of using an integrated GPU for purposes other than gaming. Does the performance of the cpu decrease when the integrated gpu is in use? Does it ...
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1answer
83 views

LGA 1155 Socket

I have an ASUS CM6850 Motherboard and SIW reports: Manufacturer ASUSTeK Computer INC. Model CM6850 Version Rev 1.xx Bridge North Bridge Intel Sandy Bridge Revision 09 South Bridge Intel H67 ...
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1answer
754 views

Assign processors to Hyper V host machine optimally [closed]

We have a Intel Core i7-3632QM CPU (4 Cores, 8 Threads, 8 Symbols in device manager) on a host machine with Windows 8. We have a single Hyper V virtual machine with Windows Server 2012. How do we ...
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1answer
450 views

Will a CPU upgrade speed up my web browsing? How to tell?

My CPU model is 2 and a half years old now, released Intel Q4'2010. How can I determine if getting a new CPU will improve how fast I surf the Internet, versus getting a better ISP subscription?
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1answer
90 views

Extremely high pitched noise just came and went from my PC in the space of about 2-3 minutes

With my hearing I'm not totally sure but seemed to be coming from PSU/CPU area. Anyone know what would normally cause this temporary squealing? Gradually built up pitch and noise for about a minute ...
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329 views

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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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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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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2answers
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
156 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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332 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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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
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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
827 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
366 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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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
463 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 ...
5
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1answer
276 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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628 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
141 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
479 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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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 ...