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

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Run Program When Disk Full

I'd like to receive a pushover notification when a hard drive is running low on space. I can send the pushover notification by running curl and passing various parameters to it. What I need to know ...
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1answer
71 views

What to look for when comparing processors? [closed]

Of course from benchmark testing what is the hierarchy when comparing processors? I always assumed: Brand Generation Nano meters Cores Clock rate Intergrated graphics TDP
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0answers
284 views

Mouse Hang with voltage fluctuation

I bought a new assembled PC about a month ago, but for the past 7 or 8 days I found my mouse cursor hangs every time there is a voltage fluctuation on my UPS (when sound comes from the ups the mouse ...
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1answer
430 views

how to disable Hardware prefetcher in core i3/i7

Is there any way to disable the hardware prefetcher in Intel core i3 /i7 ? Although I have posted related question in stackoverflow, but no solution till now. ...
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1answer
78 views

What is the relation between cores and cpu?

While running powertop, I got confused with cpu and cores. If you check the frequency stats image It behaves as if each package has multiple cores and each core has multiple CPUs. I could ...
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1answer
1k views

What is the difference between an execution core and a execution unit?

What is the difference between an execution core and a execution unit in a processor? I know that an ALU or FPU is an execution unit, but what is the difference with a execution core?
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1answer
284 views

Weird CPU behaviour

Occasional low performance & considering the frequency, I'd say it's more of an occasional high performance. The maximum CPU speed is 2.20 GHz. Most of the time, my computer becomes very slow ...
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1answer
2k views

Intel site says VT-x is supported on my CPU, but tests say otherwise

I have a laptop with an Intel 2nd Gen. i7-2729QM (http://ark.intel.com/products/50067/) and the Intel site says that it supports VT-x, but I've downloaded the Intel Processor Identification Utility ...
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2answers
208 views

Computer BSOD on heavy loads

I recently got a new processor, an fx 8350 black edition, replacing a sempron x4, but when i try to run a cpu-intensive game (rome 2) or run stress testing such as prime95, it crashes out to blue ...
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1answer
766 views

run a 2nd computer as an extra processor [duplicate]

I have a laptop with a busted l.c.d., but otherwise works fine with an external monitor. I was wondering if it is possible to connect it to my main pc as an extra processor(main pc is getting old, ...
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3answers
508 views

Can slow VM be due to CPU, even if its utilisation percentage is low?

I run 2 VMs. Those two VMs are not doing any CPU intensive tasks, and the host machine has a Sandy Bridge Celeron CPU, 8GB of DDR3 RAM and conventional HDDs. When I checked the CPU usage, it is not ...
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0answers
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Monitor in power saving mode while CPU is still running

I am have a problem with my LCD going into power saving mode. It all started about three days back by randomly going into power saving mode while PC is smoothly running. Then the frequency of going ...
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3answers
6k views

My CPU fan is running very high speed even with less cpu usage

Everything was ok yesterday , but now i have seen that my CPU fan is running constantly at very high speed. I tried restarting it. Before when i turn on the PC then fan used to run very high speed ...
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1answer
1k views

laptop is getting too hot after switching from Windows 8 to Ubuntu 13.04

Ever since I switched from Windows 8 to Ubuntu 13.04 my Laptop is getting way to hot. When I run sensors I frequently get something like: acpitz-virtual-0 Adapter: Virtual device temp1: ...
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2answers
232 views

Grid Engine / multithreading / multi-core / multi-cpu: How to decide optimum number of threads?

I am using a program (*) under unix/linux (various flavours) on various servers and clusters, the program supports multithreading. I can specificy how many threads I want via command line option. ...
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2answers
188 views

Performance issue with my system

Recently while using my laptop (Dell XPZ15z) all of a sudden the CPU usage is spiking to 80-100% then will drop in say 5-7 sec. I am not running any application or process that requires such CPU ...
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1answer
8k views

How to disable software-initiated overheat shutdown (due to broken sensors) in Windows 8?

A power spike broke the CPU temperature sensor on my motherboard. Memtest86+ runs fine. However, neither Linux nor Windows boots under default options. Windows simply shuts down during boot. Linux ...
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1answer
362 views

How to find microarchitecture given the CPU name?

How do I find out the microarchitecture of a processor if I know its name? For example, if I find that someone I'm trying to help says he has a Intel i7 960 3.2GHz CPU, I want to find out what is the ...
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2answers
162 views

Does the bios regulate temperature based on what cpu is installed?

I recently upgraded from an e8400 (intel dual 3.0) to a q9650 (quad 3.0). The original e8400 temperature at max load was 57 celcius. With the quad core it is now 71 C. I flashed a newer bios on and ...
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1answer
1k views

TCase vs TJ. Max

I have a core 2 quad q9650. According to intel's specs the max TCase is 71.4 Celcius. (Which is the surface of the chip as seen here: However, according to core temp my TJ Max (im assuming the ...
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2answers
559 views

what happens if I apply thermal paste on a stock cooler?

I have a new APU and was wondering if putting a small amount of paste on the APU would be too much. if there is too much, will this damage the APU,or will it be fine?
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3answers
874 views

Core 2 Duo vs. Core i5 for video editing

For the purposes of video editing (in a notebook), is there a significant difference between Core 2 Duo (2.88 GHz) processor and a Core i5 (2.66 GHz), all other things being equal? Or is it the case ...
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4answers
1k views

Windows 7 blue screen after CPU cooler died and got replaced

Okay, so here is the deal: We have a PC at home that used to be mine, it was running pretty well (though sometimes blue screen, but most likely due to faulty RAID controller, as now other 'strange' ...
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1answer
87 views

Trouble upgrading laptop processor to core 2 duo

I own a Dell Inspiron 1545 that uses, I believe, a Pentium 4. I wanted to upgrade it, so I looked and found that the strongest processor the laptop officially supports is an intel core 2 duo T6600. I ...
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1answer
2k views

Intel Core i7 4770 or Xeon E3-1240 V3 [closed]

I'm trying to decide wether to get a Intel Core i7 4770 or a Xeon E3-1240 V3 processor. Their specs are exactly the same, except that the i7 has integrated graphics, and the Xeon does not. The Xeon is ...
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0answers
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CPU i5 750 stuck at its idle multiplier. Even when used at max

My i5 750 seems to be stuck on the idle multiplier (9x) instead of the base speed of 2.66 GHz, even while loading using Prime 95 Configuration: i5 750 DP55WB desktop motherboard. 2GB DDR3 RAM PSU: ...
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2answers
96 views

How can I know the total of used processors by user in Linux?

How can I know the total of used processors by user in Linux? For example: User "X" runs 2 (or more) processes that use in total 3 processors. How can I know it? If it impossible, then How ...
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3answers
147 views

Single threaded process being executed on 2 cores

On my quad core cpu, it seems like a single thread (endless while loop) is being executed on 2 cores simultaneously. Why is this? Shouldn't a single thread be executed on one core only?
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1answer
3k views

CPU fan turns on for a second and stops, PC does not start at all

I have checked my PSU and it works fine. When I turn on the MOBO, the CPU fan, case fans and the psu fan itself turn on for half a second and then turn off. The PC remains off. The Bios light turns ...
2
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1answer
340 views

Computer doesn't beep when starting with only motherboard, power supply, and CPU. Is the motherboard dead?

I recently purchased a motherboard with my graphics card and CPU. After installing everything, it starts up, but there is no output. When I stripped down to just the power supply, motherboard, and ...
2
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1answer
751 views

What is the “real-life” noticeable difference between different processors with similar architectures? [closed]

Quick background: I'm looking for a new laptop - my old one which had a Core i7 (and died after a year) didn't overwhelm me with its speed, so I figure I shouldn't get anything worse than an i7 in ...
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2answers
2k views

Underclocking Haswell for power saving

I have been reading up on Intel's new Haswell processors, and it seems that the K-series is designed for overclocking. But what if I want to underclock? Do I still need to buy a K-series processor? ...
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1answer
54 views

Questions about upgrading my PC for gaming [closed]

I'm a pc gamer and since Battlefield 4 is out, and by playing the beta, I can play it on medium settings without that much lagg. (bf3 on high). So I would like to upgrade my pc to be able to play it ...
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1answer
440 views

Can Intel Xeon Phi improve ffmpeg performance?

I'm building a server for video encoding and I'm planning to use the latest Xenon e5-2697 v2. Can Xeon Phi help me improve ffmpeg encoding performance? a bit confused by this new "processor" ...
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1answer
292 views

CPU and motherboard compatibility

I used CPU-Z to identify my socket and it said 479 mPGA. Also got chipset information and used intel site to check out compatible processors. Turns out a lot of processors were compatible with the ...
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1answer
171 views

What's the newest/most powerful processor a AM3+ 880 motherboard supports?

It's an Asrock 880GMH/USB3, I been thinking about getting a more powerful processor, preferably a hexacore since I do a lot of multitasking and I could use the extra 2 cores. Could I get a piledriver ...
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1answer
182 views

Use all processor cores, 1 core/per 1 thread in *nix

According to xz documentation the "-T 4" means I should be using 4 threads, each compressing a different part of the file simultaneously. Before using nice -19 I would only get %50 usage of 1 core, ...
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0answers
741 views

Average CPU core temperature of 60 °C is normal?

I'm using Ubuntu 12.04 AMD64 running on an laptop with an Intel Core i5 and hybrid gpu. I set my OS to boot with the discrete GPU device turned off, so working with integrated GPU and both cores of my ...
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1answer
1k views

20+4 pin power supply to 24+4 pin motherboard [duplicate]

I'm thinking about making a small custom-build server. It would only use around 60W maximum. I don't want to pay too much so I think using an old power supply would work. The motherboard I'm ...
2
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3answers
2k views

CPU noise when under load

So, this question has been bugging me a lot, I used to have a few lovely little toys (well, not so much toys as a pentium pro and a really old Intel 80386DX microprocessor) What I noticed is that when ...
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1answer
6k views

Rediculous CPU, Memory and Disk usage on windows 8 [closed]

This is getting ridiculous, I recently went out and built myself a moderate gaming machine, not a big-rig by any means, but something that could get the job done, but it seems I made the mistake of ...
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2answers
170 views

Can a broken processor break anything else in a laptop?

I have a Dell Inspiron N5110 laptop with an Intel® Core™ i5-2410M processor. I am interested in buying an i5-2430M processor on eBay for a friend but I need to test it on my laptop. The problem is ...
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1answer
534 views

Is using top a robust way of measuring system CPU usage?

I got confused while reading this question on stack overflow. The asker says: "'top' will simply not do, as there is a delay between cpu dumps, it requires 2 dumps and several seconds, which hangs ...
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0answers
156 views

my AMD Phenom II X6 1065T don't activate TurboCore anymore

I have a HP pavillon p7 1044 at home with a AMD Phenom II X6 1065T. ...
1
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1answer
166 views

Can an energy saving powerboard damage your computer?

Two months ago, I bought a Jackson Master/Slave Green Energy Saving Powerboard. I plugged my high-end gaming desktop computer into the master port, and the screen, speakers, etc. into the slave ...
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0answers
203 views

Asus P8Z77-i Deluxe, Cold Boot Issue

Alright, so when I turn on the computer, the DRAM LED lights up. The computer might restart once or twice, but not always. After a minute or two, if I restart the machine it will start up just fine. ...
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3answers
103 views

Upgrade laptop processor [duplicate]

I have a 3 month old Dell inspirion 15 3521 laptop with a core i3 CPU. I want to upgrade it to i5 or i7 whichever suits. Is it possible to upgrade the CPU? Wat are the other parts can I upgrade?
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2answers
2k views

Windows 7 Wont Use All My CPU Core's

My computer (HP xw6600 Workstation) has two Intel Xeon processors which have 8 cores each, but system manager and performance manager only see 4 cores. The Device Manager shows 8 Intel(R) Xeon(R) CPU ...
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1answer
527 views

Can I replace Pentium 2117u with Core i7 3537U on my Asus x550c laptop?

Can I replace the Intel Pentium 2117u CPU with Intel Core i7 3537U on my Asus x550c laptop?
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1answer
2k views

Is high CPU temperature directly related to a Blue Screen? [duplicate]

First of all I'd like to note that this is not about solving my issue at hand per se, the PC in question will be brought to someone to fix it, it is more a question out of curiousity. So here is the ...