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

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Replacing processor on a motherboard. Any restrictions? [closed]

When I replace the processor module to a compatable one with a motherboard, are there any restrictions that I should follow? I will clean install the os and don't need any of the data I have ...
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2answers
2k views

What is the difference between Pentium(number) and just Pentium?

I noticed some older CPUs are branded as Pentium(n) (Pentium followed by a number), but there's some relatively new computers on shelves that just say Pentium with no number. Are those processors ...
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1answer
73 views

Segmentation fault while installing any linux distro (or windows)

I'm need of a little help from you. I'm having troubles while installing any distribution of Linux (or even Windows) in a computer .. I never had troubles installing an operating system in this ...
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2answers
17k views

Is there a way to identify the busy (CPU-consuming) tab in Firefox? [duplicate]

Sometimes there's a nasty, guilty, CPU-hogging tab in Firefox that's maxing one of my CPU cores and making the whole browser sluggish. I'd like to find it and close it. Sometimes I get lucky, but ...
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3answers
4k views

HP EliteBook 8470p running extremely hot

(tl;dr; see my bold text) I've been using this HP EliteBook 8470p for well over a year - it has an I7 proc with 8gb of RAM and before ever turning it on, I swapped out the HD with a 512gb SSD. I was ...
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0answers
78 views

Can a hot PCI adapter slow down the computer?

Using the "watch sensors" command in Fedora, I see that while the temperature of the CPU's are normal (70 degrees at most), the PCI easily exceeds 90 degrees (celcius, of course.) Once the PCI gets ...
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40 views

Both cores run constantly at 100%

I run a dualboot Fedora/Windows 7 computer. It will work fine for the first ten minutes or so after booting, after which it is rendered completely useless and slow. CoreTemp gives that both cores ...
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1answer
136 views

Diagnosing Motherboard/CPU/ (most likely) GPU

OK, so I am trying to salvage my Mum's old PC for which she had bought a new power supply. After that it worked for a long time. After that time, it wouldn't boot (fans would come on very loud, power ...
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1answer
62 views

Difference between different hardware of computer of recent times [closed]

While searching for good desktop for software development I came across many configuration.I become confuse over different thing as I don't have detail knowledge of Hardware. Difference between Core ...
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2answers
44 views

How are CPUs so freakin fast

I am going through a book on C and it said "Write a program that counts from 1 to 300 million, printing the number only if it is a multiple of 100 million. Use a stopwatch for fun to time the ...
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2answers
125 views

RAM and CPU compared to mobo clock [closed]

I have a general question concerning RAM and CPU speeds compared to a motherboard speed. Motherboards have e.g. 100-133MHz clock. CPUs have some frequency multipliers and memories I suppose have some ...
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1answer
884 views

i7 (first-gen) running memory on 1066Mhz vs 1600Mhz - any performance loss?

I tried to read about this, like what is the actual difference, but I could not find any benchmarks or helpful posts. Most of them are simple placebo effects, like "oh my god the 1600mhz module made ...
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2answers
340 views

Motor-like whine from CPU area

I have an odd sound coming from the area of my CPU. If i was to describe the sound I would say it sounds something between like a air filtration system for a fish tank when it has no water to pump ...
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3answers
8k views

What is the difference between the number of cores and the number of logical processors? [duplicate]

I have been doing some image processing on my computer using Erdas Imagine. Specifically, I am running a 5x5 median filter on imagery. I can specify the number of processes that occur simultaneously ...
0
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2answers
137 views

How specific is RAM to a CPU?

I am fully aware that you need to get RAM with a supported speed (1333mhz or 1600mhz in my case). However, must a CPU also support the RAM in someway I am unaware of. I ask because my RAM just ...
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1answer
161 views

Is it necessary to renew thermal grease on Acer AO722?

Did anyone renewed the thermal grease on the Acer AO722, there is a need to renew it on this laptop? If yes how can I know for sure that I should to do it ?
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1answer
54 views

Upgrading Old Hp Proliant DL180 Processor G1 [closed]

Can i update the HP Proliant DL180 Generation 1 Processor with: Intel Xeon E5405 (12M Cache, 2.00 GHz, 1333 MHz FSB) or Intel® Xeon® Processor 5130 (4M Cache, 2.00 GHz, 1333 MHz FSB) Is it ...
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2answers
2k views

Does my GPU finally needs thermal compound?

I have the following PC configuration and since September 2011 when I bought and assembled it the only maintenance I did was cleaning every fans with compressed air. SSD: Crucial RealSSD M4 128GB ...
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1answer
668 views

Why is my CPU heavily loaded?

Idle CPU load ranges 30-80%, when performing any tasks - 100%. problem in linux and windows. The computer is not dusty, model acer ao722, fan is working. Sensor shows initial termperature - 57 C, idle ...
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2answers
699 views

CPU overheats when display turns off

Since about a week I’ve noticed that my CPU heats up very badly as soon as the display turns off. I can't find any suspicious processes when I resume, but, if I leave the display off for more than 20 ...
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4answers
3k views

Are CPUs more stable with one or more cores disabled?

I was reading this article, and I couldn't help noticing this: ...7003.38 MHz, with two CPU cores enabled and hyper-threading disabled. Does disabling some CPU cores & disabling ...
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1answer
69 views

How many web servers will I be able to run with a dual core processor? [closed]

This question is simple, do I need to have as many virtual machines as cores I have, or can I have more? I plan to use my current PC as server, it is a Core 2 Duo E8400 @ 3.0, 4gb DDR2 (could buy 4 ...
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2answers
129 views

Built a PC some months ago, facing automatic shutdown, temperature issue?

I built a PC some months ago, it worked fine, but now it's summer time and temperature is 45 °C here in Jaipur, India. When I start playing BF3 after 20-25 minutes my UPS starts beeping and system ...
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0answers
508 views

Hardware concerns for optimal ruby on rails development on ubuntu machine

I've been developing dynamic web sites using ruby on rails on a 5 year old mac mini which has been great except that it takes too much time -- 15 minutes or so -- to run my simple test suites. I ...
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1answer
622 views

CPU overheating on startup

I just built a new PC, and on startup in the bios it already shows my CPU overheating at 190 degrees. Can anyone explain what is happening? I have 4 fans, 2 in and 2 out. This is literally the first ...
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224 views

Assigning number of Cores and Processors to a particular VM

I would like to know if we could assign uneven no of cores under different processors for a particular VM. I mean say for a particular VM we decide to assign 2 Processors and a total of 3 cores, ...
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1answer
1k views

Processor upgrade on a laptop vs. Ram upgrade. Also does ram always matter? [duplicate]

I have a Dell Inspiron 14r (N4110) with an Intel Core i3 and 4gb of ram. It runs very smoothly, however gaming on this laptop is very limited. This is mostly because of integrated graphics but i have ...
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1answer
78 views

Graphics card driver software [closed]

I have the following specs on my system76 laptop (Ubuntu 14.04 64 bit) Intel® Iris™ Pro Graphics 5200 4th Generation Intel® Core™ i7-4750HQProcessor ( 2.0 GHz 6MB L3 Cache - 4 Cores plus ...
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3answers
1k views

Difference between “system-on-chip” and “CPU”

Very confused, in some websites, they have this line: iPhone 5s CPU: Apple A7 other websites saying that: iPhone 5s System-on-chip: Apple 7 CPU: 1.3 GHz 64bit dual core other sources saying ...
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1answer
87 views

ssd(Solid State Drive) vs high processor? [closed]

What is preferable? SSD(Solid State Drive) with enough RAM or i7 processor for a new laptop?
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1answer
301 views

i7 4770k or i7 4930k - Which for faster compile times? [closed]

I've looked up comparisons and found that single core performance seems to be better on i7 4770k, but has less cores that the i7 4930k. Would VS take advantage of extra cores when compiling, or would ...
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4k views

Apache using 100% CPU, once again

Recently, apache2 started using 100% of CPU power: top gives me From other, similar threads, I took the tip to use mod_status. Aside from HUGE amounts of NULL requests, it gives: CPU Usage: u2.16 ...
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1answer
160 views

Adding Extra 4GB Memory Module to 2X2GB

Can i add a 4GB Ram Module to my Intel P55 Chipset Motherboard which already has 2X2GB Modules(4GB).Will this cause any issues like timing problem? UPDATE: I have an intel DP55WB Board,it supports ...
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3answers
137 views

Is my CPU 32 bits or 64 bits?

The operating system on my machine is Windows 7 32bit. Although Windows lists as 32 bits, but does also mean my CPU is 32 bits? If not how could I find out what my CPU is?
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1answer
2k views

One cpu core working harder than the rest

I have seen that with my AMD A8 cpu one of the cores is working harder than the rest. See below: The running processes: Does any one know if this is a problem or just a natural assurance.
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1answer
30 views

different CPU speed after motherboard replacment

my CPU speed was 2.4 but now it became 2.00 GHz, my laptop is Acer Aspire 4736z, I replaced my motherboard with a different motherboard (all of them are design for the same laptop). this laptop has ...
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1answer
2k views

How does Linux `uname -m` get its information?

Where does Linux uname -m get its information from? I am asking because I have a machine that is 64-bits for sure, and uname -a and uname -r confirm that, but uname -m prints i686. Where does it get ...
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2answers
241 views

Computer restarts without warning; code bcc116

Processor: Intel i5 4430 4-Core 4x3Ghz Motherboard: msi h87-g41 Graphics Card: Nvidia GTX760 Power supply: eps-750 cm RAM: 8GB I bought a new assembled gaming PC which worked fine for a few days. ...
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2answers
7k views

CPU fan turns on and off repeatedly without booting

My PC has suddenly stopped starting up. On checking with case open, the CPU fan starts running when the power is turned on, but it stops after about 2-3 seconds, restarts again after about 2-3 seconds ...
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3answers
975 views

Clean thermal paste from touch contact points on the underside of the CPU

I bought an used CPU (Intel "Core 2" E4700) on eBay and it came with the underside dirty with something that seems it´s thermal paste. Before I send it back, I wonder if it could it still work ...
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1answer
160 views

Laptop fan possibly not working, unsure

So, I have a Lenovo G550. I've had a few issues concerning the fan. Well, I think so. I have no way to open the laptop at the moment. I'm running XUbuntu 14.04. Anyways. I've noticed the laptop has ...
2
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0answers
370 views

AMD Phenom II X2 555 BE, core unlock suddenly not working?

I've had a Phenom II X2 555 BE for around 2 - 3 years. When I got it, I immediately core unlocked it with my ECS A880GM-A3 mobo, which makes it turn into a Phenom II X4 B55. A few days ago, I ...
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1answer
3k views

What is scalability in Intel CPU?

Some Intel CPUs have a scalability feature such as i7-4790: Scalability: 1S Only There is no explanation about what this is. Could somebody explain it to me?
2
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1answer
305 views

Are lower TDP CPUs slower?

If the clock speed, the cache size, etc. are the same, does a 65W Intel CPU run slower than a 84W CPU? One example is i5-4690S vs i5-4570, http://ark.intel.com/compare/80812,75043
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5answers
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Very high-pitched noise when computer does something intense?

"Intense" is the best word I can use to describe it because I'm not sure what it is, whether it's RAM, GPU or CPU. If I pan the camera in unity: A high pitched noise issues from the computer. The ...
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1answer
172 views

Choosing processors for terminal server [closed]

I am going to buy a server for terminal sessions. It must be able to serve about 500 concurrent sessions without any significant impact on performance. Each session will run a quiet simple app with ...
0
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1answer
128 views

How do I determine my bottleneck when executing unit tests?

I've a very large solution, with 11K+ unit tests, and on my desktop it takes about 30 minutes to run them; on my laptop it takes 60 minutes. NOTE: I've already swapped out the HDD for SSD and it ...
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2answers
142 views

How to compare CPUs given CPU frequency and Number of cores? [closed]

I am currently working on a comparison between several single-board microcontrollers and I am trying to compare them according to several aspects (CPU, RAM, Price and features). When it comes to ...
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2answers
108 views

Why a demanding proccess doesn't use another core?

I've got an older Core i5 laptop and I play Dota 2 game sometimes. It's pretty demanding for my processor. But when I quit the game and look in system resources graph (in Taks Manager) and see ...
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0answers
28 views

Why in 'tech-wars', the main actors are almost always only two? [closed]

Why in 'tech-wars', the main actors are almost always only two? Some few examples taken from very different fields of application: browser war (Netscape vs IE, or nowadays Firefox vs Chrome) ...