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

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What factors other than clock speed influence the performance of a CPU? [duplicate]

Having seen various people test powerful emulators on their computers, I have come to surprise hearing about how one CPU can have triple the clock speed but still have worse single-threaded ...
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15 views

How much faster can single-threaded performance get with CPUs?

I keep hearing people say that single-threaded performance will reach a physical limit one day, and from which there's no way it could get faster after a certain point is reached. How far are we ...
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24 views

Im lagging on the next gen games and i dont know what to upgrade [on hold]

I was really excited to play gta V with my computer because i heard that gta v can run smoothly on almost any rig. Now when ive played about 9 hours of gta im getting pretty annoyed over all the fps ...
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0answers
11 views

What are the Physical differences between an AM2 and an AM3 CPU?

What are the physical difference/looks between an AM-2 and an AM-3 CPU/Processor. (Are the pins located differently, are they different sizes?)
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5answers
39 views

Random spikes to 100% CPU lasting several minutes, (intervals, duration, processes) W7 PRO Dell E6400

For the last month or so I'm plagued with often, yet unexplainable spikes to 100% CPU load. Usually then Task Manager shows one or two processes taking 50%+ of CPU (not always the same: svchost, ...
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0answers
12 views

Input not supported error in monitor after overclocking the processor

Hi please any help would be appreciated. Here is my PC specs AMD A4-4000, 4GB DDR-3 RAM, windows 8.1+ubuntu 14.04 My trouble started when i tried to overclock my processor by using the gigabyte ...
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3answers
51 views

Can I safely replace a CRT monitor running at (1024x768) with a 21" TFT (1920x1080) HD monitor?

My archaic CRT monitor has a resolution of 1024x768. My GPU is an Intel 82945g chipset, CPU is P4, 1GB RAM running Windows XP. I want to replace the CRT with a TFT which comes with 1366x768 ...
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2answers
46 views

Computer Randomly Powers Off. What's The Cause?

I upgraded my computer a month or two ago now and now every so often, my computer will randomly shutdown (and then restart after about 5 seconds). To clarify, it usually shuts down when coming out of ...
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1answer
18 views

How to tell if it's either the CPU or the Motherboard that is bad?

I have an Acer 5536 laptop that won't boot. I've already tested the memory modules and the hard drive and both are ok. The problem is that I don't know how to tell which one is the problem: the CPU or ...
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34 views

Which of the following instructions can reference a memory location that is #1000 locations from the instruction? [migrated]

I am working on a question from a practice computer organization exam The Problem: Which of the following instructions can reference a memory location that is #1000 locations from the instruction? ...
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1answer
30 views

Wrong architecture or manufacturer - conflicting information [duplicate]

This is what I get from the set processor(Environment variable) command in 64-bit Windows 7: PROCESSOR_ARCHITECTURE = AMD64 PROCESSOR_IDENTIFIER = Intel64 Family 6 Model 58 Stepping 9, ...
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1answer
21 views

What is this logic component?

This is from http://www.cis.upenn.edu/~milom/cse240-Fall05/handouts/Ch05.pdf , slide 9. From this diagram, I recognize 0001 as the opcode or ADD. I recognize 011, or 3, as the source register and ...
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0answers
20 views

i5-4960k 3.5GHz running at only 0.8GHz

I recently built a gaming PC (detailed specs listed below), however the CPU seems to be extremely limited. Specs: MSI z97 Gaming 5 Motherboard Intel i5-4960k 3.5GHz CPU MSI GTX 970 Graphics Card 8GB ...
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1answer
12 views

xfx750i support for intel pentium G3240

I have a XFX750i Motherboard and want to upgrade my CPU to Intel Pentium G3240, or Intel Pentium G3580. So my question is whether my Motherboard will support either of these CPUS??
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1answer
53 views

Which piece of hardware in my desktop is failing?

Almost 2 years ago I built a custom desktop. This week it seems to be becoming inoperable. It's a dual boot system capable of booting to Windows 7 or Windows 8.1. When I sat down at it the other ...
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1answer
31 views

What hardware is needed to support ECC UDIMM / ECC RDIMM

There are 2 types of server RAM's UDIMM unbuffered (or unregistered) ECC (Error correction) RDIMM registered (buffered) ECC memories. The main difference between them is that UDIMM are using CPU's ...
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2answers
39 views

Does MotherBoard limit RAM?

http://www.findlaptopdriver.com/hewlett-packard-09e0h-mainboard-specifications/ ^^ That page lists the specs of my motherboard. It says that it can support 4 x 240-pin DDR2 DIMM slots Supports DDR2 ...
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0answers
18 views

stopping windows from undoing overclock settings

I have managed to overclock my CPU from 2.5 to 3.0 GHz, my BIOS says so at the top. But when I load coretemp after windows boots, it says my CPU is only at the original 2.5GHz. Is this just coretemp ...
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1answer
34 views

High CPU usage on Linux

I have a process that is called gis taking 100% of the cpu (sub-cpu) on one server and 3 % on another similar server (running as HA-pair) All other servers have are using 2-3% of cpu as well Is ...
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3answers
4k views

How can manufacturers put the specs of overclocking speeds when the whole point of overclocking is it's not known? [closed]

Some retailers really play up the overclocking capabilities of CPUs. For example, in the advertisement for this Intel Core i7-5820K processor, it says it can be overclocked to 3.6 GHz. How is that ...
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2answers
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Laptop shut down randomly when temperature is low

Basic info of my laptop: 3.5-year-old Samsung RF411, Win7, no hardware change since purchase, Windows disk & memory check all OK, passed memtest86+ test. Recently, it randomly shuts down/blue ...
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0answers
12 views

Why does sensors-detect only see my coretemp-isa-000 adapter?

I am running Kubuntu 14.04 with an intel i7-4790k cpu and ASRock extreme 6/ac motherboard, but sensors-detect does not give me anything but the core ISA adapter. I know I can sense fan speeds on the ...
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39 views

How do I identify counterfeit hardware?

A peer recently told me to be aware of counterfeit Intel CPUs. I built my PC just last year and now I’m afraid I might be affected. How would I discover counterfeit hardware? My PC: GPU: Asus GTX 780 ...
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2answers
76 views

Going silent: will an SSD with a newer but 'slower' CPU run as fast? [closed]

I currently have a relatively old (2009) Shuttle XPC with an AMD Phenom X2 550 3.10GHz and 2 SATA HDD drives. I use it as my work computer, usually running a couple of browsers, XAMPP, 2 or 3 ...
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1answer
20 views

When MS offers a UPDATE choice between [x64 System] and [blank] are they talking about OS or CPU bits

When planning to install a UPDATE to repair a conflict the Microsoft knowledge base offers a choice of two types. Notably one intended [for x64-based system] and the other a generic [] this is CPU ...
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1answer
44 views

How to stop System Interrupts from eating up CPU

I have Windows 8.1 Pro N x64 on my Toshiba Satellite L505D-S5965 and there is a processes in Task Manager that is eating up my CPU. It's called System Interrupts and it takes up 1%-29% of CPU Power ...
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41 views

WPA shows NIC driver DPC fragment running for 232 milliseconds

I'm stress testing my UDP proxy on a machine with 8 logical CPUs. At around 14 thousand UDP clients, one of the CPUs (CPU 4) starts spiking and UDP throughput (as shown by Task Manager) plummets to ...
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1answer
25 views

CPU Load + Frequency per core in linux terminal?

I am doing scientific computing and I need to keep an eye on the cpu frequency and load of each core (there are 2 cores, on Ubuntu 14.04 w/ Gnome3). I can see the frequency with this bash script: ...
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0answers
21 views

Is my motherboard defective?

Last month I bought a new Esonic motherboard with intel G41 chipset and a 4GB DDr3 1333Mhz Ram and installed my old processor, Intel Dual core E2140 (1.6 Ghz, 800Mhz FSB ) in it. Now after starting ...
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33 views

Disable Badly-Designed Form Element

One of our suppliers has a badly-designed website. On this website, there is a HTML select tag which has, over the years, grown to over 10,000 options long. This is apparently enough to cause large ...
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Intel(R) Xeon(R) CPU E5-2670 0 definition

When I look at the output of /cat/cpuinfo in linux, I get the following: Intel(R) Xeon(R) CPU E5-2670 0 as part of the result. What does that final 0 indicate?
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1answer
32 views

BIOS Update Before Installing CPU

I finally got around to builing a (shiny) new machine. So do I need to update BIOS before installing the new CPU? New hardware components include, Motherboard: ASUS H81M-PLUS CPU: Intel Core ...
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1answer
30 views

Seemingly random reboot during OS installation

I've recently changed my mobo and as usually in this case my OS wouldn't boot properly(I got past login, then, after few seconds, reboot). I proceeded to fail-safe mode, backed up my data and begun ...
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2answers
28 views

High latency, High CPU Interrupts per second 60K/Second causing FPS spikes in games

CPU Profilling Screenshot: i.imgur.com/10ZJNN9.png LatencyMon i.imgur.com/KJbaS3p.png Battlefield Screenshot: i.imgur.com/chpYIjN.jpg Processes: i.imgur.com/wDOpxtq.png 1.3ms of execution time on ...
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1answer
64 views

My cpu claims it is 2.53 ghz but never reaches it. why?

I run cpu burner, and set c state limit to c0. all power savings are disabled and i set multiplier to 20T which is the only allowed turbo multiplier on throttlestop. maybe there could be another ...
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2answers
74 views

CPU fan speed not increasing while in game

I have a weird CPU fan issue - as long as I'm playing a game (Cities: Skylines), the CPU fan keeps spinning at the usual RPM while the CPU temperature starts increasing. As expected, the CPU overheats ...
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1answer
56 views

Why is my Lenovo G500 laptop computer running slowly?

The one I’m currently using is a Lenovo G500, Intel Core i7, 2.10 GHz, 8 GB RAM, 1 TB HDD, Windows 8.1 64-bit, AMD Radeon HD 8570M, Intel HD 4000. The problem is that it is slow. It lags, even if I ...
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0answers
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where can I find intel opcodes

Where can I find all intel opcodes? I'm talking about actual values of cpu asm commands, 0s and 1s of the keywords such as MOV, JMP, CMP etc. Are they available to the public?
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cpu fan turn on and off in a loop

Suddenly my processpr fan started turning on and off in a loop , it starts for 1-2 sec and turns off and sometimes it turn on after 6-7 loop of on and off their is still no display , few mins ago the ...
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1answer
21 views

what does CPU% means in `ps auxf` for processes with parent/child relationship?

When I use ps auxf to display process information with ASCII art process hierarchy. Processes with parent/child relation is listed as below. USER PID %CPU %MEM VSZ RSS TTY STAT START ...
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0answers
48 views

PC shutting down every 30 minutes

I changed my graphics card and PSU today (went from 650Ti to GTX 770 and Thermaltake PurePower 430W to OCZ GameXStream 600W). I plugged these components in, at first I didn't fit the 20+4 pin ...
0
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1answer
73 views

Intel Turbo Boost temperature safety limits? [duplicate]

I have read many posts about Intel turbo boost technology and I am still a little confused. I get how it works and I even went as far as turning it off but it didn't seem to do anything. When I ...
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0answers
29 views

Which CPUs support TSX, with the erratum fixed?

With the discovery of a bug in the implementation of TSX, all CPUs designed before that discovery have the extension disabled via microcode. Half a year later, I haven't found much about new ...
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5answers
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Why does a CPU have a clock? [closed]

Is it not possible to design a CPU without a clock? Is the only reason is it necessary is to measure the processor speed? What are the other benefits of having it inside the CPU?
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1answer
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VirtualBox is using more processors than allotted

I have a VirtualBox Windows VM configured to use 3 out of 4 processors (see screenshot), but when my computer froze (see description below) recently, I used top and discovered that the VirtualBox ...
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1answer
44 views

Processor and RAM [duplicate]

So, for the past couple (Around 8?) of years, I have been using a 1.6Ghz Dual-Core CPU( I know, it's terrible, I tried upgrading, but it's an AM2), with 4GB of RAM, I recently put in 4 more GB of RAM, ...
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1answer
34 views

CPU is weak, is it CPU or motherboard? [closed]

My laptop, an Alienware M17xR3 started to run slowly lately. What happens is that sometimes it runs well, and sometimes not, I did run 3d mark benchmark and while mostly I get low results it happened ...
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0answers
17 views

How to control the CPU clock speed? [duplicate]

I have an i7-3612QM@2.1GHz in a Dell Inspiron notebook and now running Windows 10 Technical Preview. The experience described below was also seen in Windows 8.1 previously. I have been monitoring ...
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0answers
15 views

CPU temps conflict

I'm using an MSI 970 Gaming Motherboard along with a Phenom II 1090T and a Corsair H60i. Naturally I'd pull up BIOS and read temps from there but the water cooler kicks so well by the time I reboot ...
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1answer
35 views

65W TDP CPU in a Socket with a 95W TDP CPU

I have a PC which currently has a Pentium D 945 (http://www.cpu-upgrade.com/CPUs/Intel/Pentium_D/945.html) Which has a TDP of 95W, and I would like to upgrade to a Core 2 Duo E4400 ...