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

learn more… | top users | synonyms (2)

12
votes
1answer
23k views

High CPU usage by the “system” process

I have noticed that from some time my system is freezing and its probably caused by the high CPU usage which is caused by the system process. All applications I'm running is the Skype, TeamSpeak and ...
0
votes
3answers
968 views

Fedora 17 laptop shuts off due to overheating

I've got a Toshiba Satellite A665-S6094 that I've just installed Fedora 17 onto. When I have a process that utilizes 100% of the cpu for more than 15 minutes or so, the computer force shuts down due ...
2
votes
1answer
131 views

What differences are there between processors of different ranges but with similar/identical specs?

Could someone please explain what the difference is between an i3 processor and an i7 processor that both have the same clock speed and similar other characteristics? What benefits are there in ...
6
votes
1answer
1k views

Windows 8 generates less heat than Windows 7?

I have a dual boot with Windows 7 and Windows 8 Professional on my laptop. When running Windows 7 on my laptop, the CPU core temperature usually ranges from 42°C to 47°C. However, when I run ...
4
votes
1answer
3k views

Will I lose my Windows 8 activation after hardware upgrade?

Windows 8 Pro w/WMC is installed on an Asus M3A78-EM with an on-board GPU. I wish to upgrade the GPU and have purchased a compatible one but have not installed it yet. I also wish to upgrade its CPU. ...
11
votes
3answers
2k views

Can a processor upgrade cause BSOD?

I Had the following hardware setup: Phenom II X4 945 Asus M4A97 4GB DDR2 OCZ Radeon HD5850 OCZ Agility 2 120 GB Windows 7 x64 Pro Fully updated (latest drivers and windows update patches) Then I ...
4
votes
2answers
664 views

What does the file /proc/cpuinfo tell me about the hardware?

I rent a server which should have "2 Cores x 2,2 GHz". When in run the command cat /proc/cpuinfo I get the following result: processor : 0 vendor_id : AuthenticAMD cpu family : 15 model : ...
2
votes
1answer
698 views

overclock atom n2800 CPU

I have a netbook (EeePC 1025C) with atom n2800 1.86GHZ CPU. I tried to use SETFSB to overclock, but I can't find the required 9LPRS432AGLF clock generator. In the BIOS there is no overclock option ...
1
vote
1answer
1k views

How does integrated graphics work with a dedicated graphics card?

I've been out of the hardware loop for a long time, and seeing as it's time for me to upgrade, I've been looking at the latest gear. The newest Intel processors appear to have integrated graphics ...
3
votes
1answer
348 views

Intel assembler/architecture documentation?

Would anyone know where the best "official" Intel documentation regarding the low level architecture/assembler internals would be? How the ESP works, the various registers- fetching values from RAM ...
1
vote
5answers
6k views

how can force a prgram to use all of CPU capacity?

I have Windows 7 And a Intel Core-i5 CPU (4Thread) some programs like Firefox, only use up to maximum 25% of All CPU(only 1 Thread) And some programs like Winrar, use up to 100% of All CPU Can ...
1
vote
0answers
165 views

What happens if no ram is in a dual CPU riser?

I have a Dell precision T5500 with a dual CPU riser. There are 6 slots on the system board and 3 on the second CPU riser. The Dell recommended configuration is to divide between the system board and ...
-1
votes
2answers
93 views

What do you call the “action of” striping threads across multiple processors? [closed]

A question of curiousity, I understand [one thread per core] or with time slicing, [many threads one core] But, is there a way even through emulation, even with a performance cost, to... how to say... ...
0
votes
2answers
126 views

Serial Communication vs Device Drivers

My understanding is that serial communication is for direct CPU-to-CPU (or microcontroller-to-microcontroller) communication along a serial bus. My understanding is that a device driver is for ...
1
vote
1answer
348 views

How do I overclock my RAM?

I just built a pretty awesome computer on a i2700k Sandy Bridge processor and am pretty happy with it thus far. By just changing the multiplier, I have things fairly stable at 4.6 GHz on air, moving ...
0
votes
1answer
783 views

Intel Core i7 QuadCore on HP Pavilion dv7 Overheating Issues

I bought a brand new HP notebook: HP Pavilion dv7-6b21em BeatsAudio edition. The notebook is about 2 months old and has pretty nasty overheating problem. I mainly use it for development however i do ...
0
votes
1answer
757 views

Running a Snow Leopard 10.6.7 Image on an AMD: The CPU has been disabled by the guest operating system

I am trying to run a Mac OS X Snow Leopard VMware image 10.6.7 on my AMD quad core computer with VMware Workstation 9.0. My latest attempt involves opening the specific configuration .vmx file (which ...
2
votes
2answers
69 views

Instruction assignment with multiple CPUs

Maybe this is a stupid question but I am trying to gain a better understanding of hardware inner workings... If a machine has two or more CPUs, which hardware component is actually responsible for ...
0
votes
2answers
635 views

Is it possible to limit how much CPU a virtual machine can use with VMWare Player?

Is it possible to limit how much CPU a virtual machine can use with VMWare Player? I use VMWare to run a Windows XP virtual machine. I want to keep it on in the background all the time. The real ...
4
votes
3answers
163k views

How do I check CPU temperature in Windows 8? [duplicate]

Possible Duplicate: How can I measure my computer temperature? On my previous PC I have used some gadgets to measure the temperature. How can I measure it on Windows 8?
0
votes
1answer
643 views

No POST / BIOS after CPU change

I tried to upgrade my PC with a CPU change. The motherboard is a Gigabyte P35-DS3L, the old CPU is Core 2 Duo E6550, the new one is a Core 2 Quad Q9400. I had to to take out the graphics card and two ...
4
votes
1answer
1k views

Laptop CPU fan not working properly

My laptop's CPU fan is suddenly acting very bizarre, and I am at a loss for what to do so I am asking for some help. Specifically, the fan is not even starting to spin until the CPU reaches 60 ...
-1
votes
1answer
333 views

If I double my ram on a x86 processor, does that double the ram I can use for each individual process? [closed]

I don't understand how 32-bit OS's use RAM on a per process basis. I've read the max RAM my x86 processor running a 32-bit OS can use is 2^32 = 4GB; but that's just for one process, right? 3DS Max ...
1
vote
0answers
143 views

Reading cpu temperature Intel celeron R ubuntu

I know there are already a lot of questions like this, but non of the answers provided there could fix my problem. Hopefully I find an answer here. I try to read out my cpu temperature with lm-sensors ...
4
votes
1answer
122 views

CPU modes and recursive virtualisation

I'm trying to get my head around virtualisation and hypervisors. So the top OS, say Linux, runs in ring 0, with userspace programmes running in ring 3. The user boots up VMware, with Linux running ...
0
votes
2answers
103 views

Less pieces of high GHz core or more pieces of less GHz cores [closed]

I am planning to buy a used computer for video editing, now I have found one with 2x E5310 CPU for a decent price. And I havn't found any information which is better for video editing (Sony Vegas, ...
0
votes
1answer
650 views

How to add a CPU to win 2003 serv

I added a cpu to my vm 2003. I needed an instruction how to set up new processor affinity to my serv win 2003
1
vote
1answer
68 views

CPU suddenly been used up a lot

I have a Dell XPS 14 (L1401X, core i7, Nvidia GT425M, 4GB RAM), which had been used for over a year now. Recently I installed a new RAM, Kingston 4GB 1333mHz DDR3, meaning I now have 8GB of RAM in ...
0
votes
2answers
3k views

CPU and Motherboard clock speeds

I have been doing some reading about CPU clock speeds and how CPU clock speeds are calculated. After reading several articles, I have come to the understanding that your CPU clock speed is determined ...
0
votes
2answers
824 views

Is this normal CPU temperature?

My power supply fan has suddenly started becoming really noisy and I am wondering if it is affecting my CPU temperature. I have a desktop with a 6-core CPU. This is what CPU Thermometer shows me: ...
47
votes
5answers
4k views

Is it dangerous to run a CPU in an extremely cold environment?

We are in a fish processing unit where the temperature is constantly at -10°C (+13F). If we use a machine in here, will it be at risk of damage from the cold? Is there any considerations we need to ...
1
vote
0answers
898 views

How does one calculate voltages for overclocking? [closed]

So, all I know is voltage and clock have something to do with each other. Unstable if too low voltage Too high voltage, and too much heat. or higher voltage + lower clock may heat less than that ...
1
vote
0answers
151 views

On windows 7 - Set core Affinity on boot, Or bulk affinity/tasking tool? (Like a KsysGuard for windows)

Not even sure if its possible but: you know how you can set custom scheduling in Linux. → and sure, I can set affinity for Windows 7 Programs one @ a time. But do you know of a tool that would allow ...
3
votes
2answers
4k views

vmWare Player - virtual machine configured for 2 CPUs but I only have 1 CPU

I copied a virtual machine that I downloaded but can't play it in vmWare player. When I start to play it, it says: This virtual machine is configured to run with 2 CPUs, but the host has only 1 ...
1
vote
0answers
660 views

windows 8 after sleep/shutdown, multiplier down

Here's my bothersome problems.. I have a Dell Studio 1555 with Windows8. After OS installation I DO NOT have installed any driver. I have a Dell Studio 1555 CPU: Core 2 DUO P8600 2.4Ghz RAM: 4GB ...
1
vote
3answers
3k views

Turning display off makes CPU burn up and fan gets really loud on sony laptop with windows 8

My laptop display will turn off for two reasons: Either I leave my computer idle and the display automatically turns off, or I close my lid and then just the display turns off. When I am using it, my ...
0
votes
0answers
55 views

“Thermal Delay” Cooling

I was wondering if someone can define the term Thermal Delay for me? I got the basics, but I cant really seem to find a solid and trustworthy website too fill out the holes in my knowledge.
3
votes
2answers
5k views

Mobile CPU vs. Ultra-low voltage CPU: performance [closed]

I'm choosing a new laptop and one of the questions is a type of CPU — mobile or ultra-low voltage. If to be more precise, I'm torn between two models of Intel Core i5 — i5-2410M (Sandy Bridge) and ...
0
votes
1answer
205 views

Computer shuts off after heatsink upgrade

I just recently replaced the stock heatsink that came with the AMD FX-8150 with a Cooler Master Hyper 212 Evo and have been having a lot of issues with my computer ever since. I first noticed the ...
2
votes
2answers
118 views

virtual pages associated with each running process

How can I list out all processes that are currently running on my system, and print the virtual pages allocated to it and number of page faults associated with each process?
0
votes
1answer
207 views

Does hyperthreading divide GHz in half?

Imagine you have a CPU with 4 cores @ 2.2GHz, each one with a thread. Therefore, the OS thinks that it has 8 cores @ 1.1GHz each (I think). What would be the maximum GHz that a not concurrent ...
0
votes
1answer
92 views

Troubleshooting, GTX 670 + i7-3820

I've tried to figure this out on my own, but so far I've had no luck, so I now turn to the greater forces that be, ie. you guys. I'm sorry if this is in the wrong forum, but I couldn't decide where ...
2
votes
1answer
1k views

How much faster is an Intel i7 than an 8 bit 6502? [closed]

Saw a Commodore 64 recently and it got me wondering how much faster current desktop computers than the 8 bit machines we had in the 80s. Does anyone know approximately how much faster an i7 than the ...
4
votes
4answers
3k views

How can I find a list of all SSE instructions? What happens if a CPU doesn't support SSE?

So I've been reading about how processors work. Now I'm on the instructions (SSE, SSE2, etc) stuff. (Which is pretty interesting). I have lot of questions (I've been reading this stuff on Wikipedia): ...
0
votes
3answers
4k views

Which top CPU for “support 45nm Multi-core CPU” motherboards? [closed]

In my test desktop PC, I have motherboard ASUS P5K (specs link). The specs say "Support Intel® next generation 45nm Multi-core CPU". Which CPU should I buy to get the maximum power from this ...
1
vote
1answer
1k views

How to get CPU %user %system in FreeBSD without using top?

Is there any other FreeBSD command besides "top" which can be used to get the following values? CPU: % user, % nice, % system, % interrupt, % idle My problem to be specific is ...
0
votes
0answers
710 views

Core i3770k running too hot?

I just installed a Core i7 3770K. I have a Corsair H60 Hybrid CPU cooler with fans on both sides of the radiator for a push/pull configuration. I have the airflow for the radiator pulling in air from ...
0
votes
0answers
159 views

How can I judge the suitability of modern processors for systems with specific CPU requirements?

Inspired by this question: How do I calculate clock speed in multi-core processors? The answers in the above question do a fair job of explaining why a lower-speed multi-core processor won't ...
1
vote
0answers
138 views

How can I look at CPU utilization of a particular process across multiple CPUs?

I am trying to figure out (on Kinux) how to look at a single process and its CPU utilization on individual CPUs. In particular, I have an app server process running and I want to see how much of each ...
2
votes
3answers
201 views

Could suspicious CPU activity indicate a virus? [duplicate]

Possible Duplicate: How do I get rid of malicious spyware, malware, viruses or rootkits from my PC? I recently identified some suspicious CPU activity on my Windows 7 x64. While idle in ...