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)

4
votes
0answers
862 views

Bent processor socket pins LGA1155 after overheating CPU

I have an i7-2600k (not overclocked) on an ASUS P8Z68 V-Pro motherboard that I was cooling using a Corsair H60 since last August. My A/C went out for a period of two weeks and my ambient temperature ...
3
votes
0answers
65 views

Why is Google Drive so heavy on my CPU?

As the below screenshot shows, despite the fact that Google drive doesn't appear to be doing anything (it's not syncing any data) it's using over 12% of my CPU (a core i7). The official ...
2
votes
0answers
27 views

system monitor showing 25 ghz cpu speed, could that have any bad effect?

http://i.stack.imgur.com/ZKl0f.jpg I have a water cooled system, but.... I dont hatve that kind of wallet to be able to pull that out. is anyone of you that had this problem?? what I want to know ...
2
votes
0answers
47 views

Would a powerful enough D-Wave system (quantum computer) be enough to reach over 50% of bitcoin?

Bitcoins computational power is about 64 exaFLOPs. The most powerful supercomputers don't even reach one of those exaFLOPs. D-Wave, unknown as I couldn't google it, but I read that it is 3,600 times ...
2
votes
0answers
33 views

Desktop remains on, display quits working, loud “skipping” noise follows

For the past 2-3 days, strange things have been going on with my desktop and its interaction with the monitor. While playing a game, my monitor went black as if my computer had been shut off. However, ...
2
votes
0answers
48 views

MemTest86+ bad adresses constant despite swapping sticks, processor/MOBO to blame?

(Sorry for the wall of text, but people seem equally critical of missing details) After about 2 years without trouble, I've been having issues recently with system instability, BSODs, random ...
2
votes
0answers
20 views

Why do I get better performance on VMWare when I enable all cpus along with adding cpulimit?

I'm curious but at the same time also would like to share my findings of the increased gaming performance in VMWare by enabling all virtual cpus and limiting the VMWare process with cpulimit ...
2
votes
0answers
143 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 ...
2
votes
0answers
35 views

Validate CPU virtualization support on Windows 7

On Windows 7 hosts, how do I validate that CPU virtualization support such as AMD-V or VT-x is enabled without rebooting the machine and installing additional or third-party software. In that case, ...
2
votes
0answers
40 views

One Core Hotter and slower than others

I overclocked my Intel Core i5 3570K to 4.2GHz at 1.1V. It ran stably overnight on Prime95, but, while I was monitoring the core temps, they stuck within 45-55C with core #3 was always 3 or 4 degrees ...
2
votes
0answers
97 views

Idle CPU and CPU Power-saving mode definitions

I have a presentation on CPU's and there's some stuff I want to clarify that's defined in many research papers that I'm not fully sure about. How can the CPU ever be idle? I mean as long as you are ...
2
votes
0answers
146 views

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: ...
2
votes
0answers
266 views

Windows Explorer 25% CPU usage while computer is idle?

I am facing a problem with my Windows Explorer. I cannot figure out why this happens even if the computer is idle. When I try to run some games that are old(released before 2005), at first trial the ...
2
votes
0answers
35 views

Energy Lost on CPU Propagation Delay

I was wondering if anyone had some statistics about the average amount of energy that is lost on the process of propagation delay in moving a signal from one place on the CPU to another. I'd prefer ...
2
votes
0answers
100 views

Haswell power efficiency compared to Ivy and Sandy

After reading a few reviews about the Haswell CPU series, I concluded that upgrading from Ivy or Sandy bridge might not be worth it considering the limited power gain. However Intel does advertise ...
2
votes
0answers
198 views

CPU (?) Clicking Sound During Resource-Intensive Tasks

I just bought a new computer (Lenovo Yoga 13, with integrated graphics and SSD). Whenever I bring it out of sleep, or do something resource-intensive (such as heavy Photoshop work), I hear a scratchy ...
2
votes
0answers
147 views

Correct CPU Frequency in BIOS

One of the machines I have is a 10 year old one. I can't discard it due to some sentiment (Mom). Legacy board: Mercury 810e, 133 MHz FSB Processor: Pentium III Tualatin 1.2 GHz Observation: I see ...
2
votes
0answers
196 views

Upgrading Core i3 540 -> i5 760

I have Gigabyte H55M-UD2H motherboard with 8Gb (2x4Gb) RAM and Radeon HD 5770 graphics. I am trying to upgrade my processor from Core i3 540 to i5 760 but the system won't boot; no POST beep even ...
2
votes
0answers
148 views

Display drivers have stopped responding and has recovered

I recently purchased this http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1723935&CatId=7182 I installed it and started experiencing some serious problems. When i do ...
2
votes
0answers
365 views

Dynamic/Static CPU Frequency Scaling

I need to manipulate frequency of each core in my I7 processor. There is a way to do it in Debian (http://wiki.debian.org/HowTo/CpuFrequencyScaling). But I want to do it on Linux Fedora and Window. ...
2
votes
0answers
178 views

Interpreting CPU BenchMark for Multi Core Systems

What is the standard ways (if any) to interpret the results of cpu benchmarking for multicore systems relative to single core systems? I am trying to compare the Passmark result of AMD 64 Vs AMD ...
1
vote
0answers
17 views

Should you worry about high voltage and wattage on a non-overclocked computer?

I've been wondering if I should be worried at all about high wattage or voltage on a non-overclocked computer. I say non-overclocked because when I Google search this question or something similar it ...
1
vote
0answers
50 views

Process tree CPU history usage, process tree memory usage (aggregated) on Windows 8.1

This question is general for Windows OS, but I would like to see a software for Windows 8.1, since this is what I use. I'm looking for software, that will take a process tree (e.g. Chrome.exe ...
1
vote
0answers
17 views

Show all running tasks in Assembly

Is it possible to show/log everything what the CPU does? The CPU knows what it executes, so it could print the running threads/tasks on the screen or in a file.
1
vote
0answers
53 views

Should the CPU usage go up to 100% when swap happens on Linux

I had been running a demo system on Linux with the following kernel: 2.6.32-400.1.1.el5uek #1 SMP Mon Jun 25 20:25:08 EDT 2012 x86_64 x86_64 x86_64 GNU/Linux And as soon as swap happens, the CPU ...
1
vote
0answers
18 views

Can I install an AMD Turion X2 64 RM-70 on a Toshiba Satellite L505D-SP6983R?

The original processor was an AMD Turion X2 64 RM-74 (dead) The board is named V000185220 Rev 1.10 This board accepts S1G2 processors, and should accept the RM-70. But I am not so confident when ...
1
vote
0answers
22 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 ...
1
vote
0answers
103 views

Comparing an i7 (3.2Ghz) against an i5 (2.5Ghz) using linpack shows the i7 being worse

I am trying to compare the number crunching performance of an i5-3210M @ 2.5GHz with 6GB ram and an i7 970 @3.2GHz with 24GB ram. The results are so unexpected I presume I am either doing something ...
1
vote
0answers
145 views

How do I underclock my Macbook AIR?

When my MacBook gets below 1% battery life I believe the CPU slows down. The battery indicator states I have 10 minutes left but those are the longest 10 minutes in the laptop cycle. Is there a way to ...
1
vote
0answers
175 views

Windows 8.1 - System process uses 1 core up to ~90% constantly

Asus N550JV comes with Windows 8 installed. I prefer 8.1 so I installed Windows 8.1 on my machine. Downloaded all the specified drivers on Asus Support Page, not to mention my whole system is up to ...
1
vote
0answers
29 views

minimum allowable CPU speed

How can I determine the minimum allowable speed for my CPU to run the computer. Having the option to reduce the CPU to 0 is not logic nor allowable in Win8. Even if you set the Max. processor ...
1
vote
0answers
21 views

Resource balancing between users?

I have a cluster of Linux computers that are shared by many users and want to ensure that no user can flood the systems and effectively prevent others from running anything. i.e. If user A is running ...
1
vote
0answers
51 views

How is CPU time measured on Windows?

I am currently creating a program which identifies processes which are hung/out-of-control, and using an entire CPU core. The program then terminates them, so the CPU usage can be kept under control. ...
1
vote
0answers
209 views

Does VLC Player run on multi core machine?

I notice that in the VLC web page, it mention that it can: With faster decoding on multi-core, GPU, and mobile hardware and the ability to open more formats, notably professional, HD and 10bits ...
1
vote
0answers
98 views

Why Skype consumes huge percentage of CPU?

I have searched this a lot using Google. I have found numerous people having the same problem as me, but I could not find any good answer anywhere. That's the reason I am asking it here as well. ...
1
vote
0answers
23 views

Replacing an cpu in a laptop

My machine is lenovo g580 with i3-3120m. I want to replace it with i5-3360m. I checked out(on intel's official website) that sockets are the same (pga), tdp also the same (35W) and bios works with ...
1
vote
0answers
157 views

Is my FRX780M motherboard compatible with AMD FX -8350 cpu??

Is my Acer FRX780M motherboard compatible with AMD FX -8350 cpu?? Do i need to upgrade my motherboard BIOS also? And if someone wants they could tell the process of changing to new processor..
1
vote
0answers
67 views

Relation between a memory map and address space in the architecture?

I will just post some quotes about each of these two from somewhat reputable sources: CPU address space from techtarget: Address space is the amount of memory allocated for all possible addresses ...
1
vote
0answers
268 views

Geforce GT 630, driver kernel randomly crashes

My Pc specs are as follows Intel Pentium D 925 Presler Socket 775 LGA CPU 3.00GHz on a Foxconn motherboard Model 45CMX/45GMX/45CMX-K (Socket 775) i945P/PL/G/GZ Os Win 7 Ultimate I had a Geforce GT 210 ...
1
vote
0answers
1k views

Windows 8.1 Process Migration Limits CPU frequency scaling

Summary: I've noticed that with Windows 8.1 on my laptop, running a single CPU intensive program does not cause the CPU frequency to scale to its maximum value. I suspect that this is because of ...
1
vote
0answers
560 views

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 ...
1
vote
0answers
165 views

Computer not booting when Hard disk is connected

I bought a new system with Seagate 2 TB internal hard disk about a week ago. I have Windows 7 running on my PC. Till yesterday my system working fine. Today when I tried to start my system, I see ...
1
vote
0answers
349 views

Why does my computer shut down suddenly without any warning?

My computer is: Motherboard: MSI 970a-g45 CPU: AMD FX-8350 eight core processor 4.0 GHz Power Supply: TSCO 650 Watts I bought my CPU 2 days ago. My last CPU was an AMD Athlon 460 x3 3.4 GHz. After ...
1
vote
0answers
156 views

Sempron 3600+ SSE instructions missing. DirectX 11 not installing.

I have run CPU-Z but no SSE1/2/3 were found under the instruction set. My GPU is an ATI Radeon HD5450. I haven't over-clocked the GPU or the CPU. This is the CPU-Z report: When I try to web-update ...
1
vote
0answers
91 views

Notebook running hot with ArchBang

This is my first installation of Arch, so I may have forgotten something. After booting it, the laptop quickly starts to became hot. I've been reading documentation on Arch wiki, but didn't found ...
1
vote
0answers
51 views

How to “convert” processor/chipset name to /proc/cpuinfo output?

I'm trying to choose a laptop and see "Chipset" and "CPU" being listed as a codename. Sometimes there is an article in Wikipedia about the processor or chipset mentioning it's features, sometimes ...
1
vote
0answers
91 views

Can QEMU be used on Mac OS X to emulate a one-core CPU (preferably only the CPU)?

Can QEMU do this kind of emulation? On Macs there's no an easy way to set CPU affinity, so this could an interesting workaround for the older programs that don't work well in multi-core environments.
1
vote
0answers
301 views

CPU performance monitoring and diagnosis Maximum Frequency drop

Question: what might be the reason why the maximum frequency goes down to 49%, while this is not sufficient to run existing processes? (please note if I am wrong in interpreting that CPU usage is ...
1
vote
0answers
119 views

Is there a way to globally limit Flash Player frame rate to release CPU resources?

On modern PC, with quad cores you sometimes can't just watch simple video normally. The reason is, that for example ad banner in another browser tab can kill flash efficiency (with is ...
1
vote
0answers
160 views

Random Hard freezes with newly-assembled PC

Here's my build I just assembled a new computer and by now it's probably a month or two old. It's mostly pretty great. However, at least once a week, maybe once every two weeks, it'll hard freeze. ...