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

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159 views

What are the disadvantages of Xeon processors? [closed]

I'm considering getting a (single socket) Xeon processor, instead of a Core i7 processor, for my entry-level workstation. (The motherboard I have supports both Xeon and Core i processors.) I'm ...
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1answer
67 views

How is microcode loaded to processor?

I read that microcode is loaded in the processor on each reboot. It resides on flash memory and when the machine is booted, it gets copied to the CPU. Or in the case of Linux, the OS itself has the ...
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28 views

CPU Clock Dropping During Heavy Load, Why?

Why during a heavy load on my CPU (Dual core Athlon 64 X2 6000+ 3.1Ghz) does my clock speed lower to 2.7Ghz? My temps are maxing out to only around 55c, this is all according to CPUID Hardware ...
5
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1answer
85 views

Do ARM processors like cortex-a9 use microcode?

Do ARM processors (recent and old) use microcode? If so, then what for? Aren't their instructions simple enough to be executed directly without being translated into micro-ops?
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1answer
69 views

How to find what is pegging CPU in linux kernel

The node of our hadoop cluster is running redhat5.3 2.6.18-194.17.4. (a old kernel version). We found some hosts are under 100% CPU utilization and specially all the CPU cores are on 100% sy% top ...
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2answers
63 views

Why is it said that 'The longer the pipeline, higher the processor clock rate' [duplicate]

I have been recently going through the hyper threading technology of Pentium 4. The number of pipeline stages is high in P4 and is said that it will increase the speed of clock rate. How is that ...
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1answer
88 views

How to terminate System Idle Process?

Every time i start my windows 7, the CPU gets very high, up to 60% and i haven't opened nothing yet. I opened task manager and saw what process where using the most. In the CPU usage and i found that ...
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0answers
28 views

How much barring does the CPU, BUS and Motherboard have on a pfSense system?

I am planning on turning an old Pent 4 system into a pfSense box using (4)100Mbps ports and I have a 50/50 fiber connection currently for $25/mo and was wondering if I would by at any rate slow the ...
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2answers
109 views

Massive Computer Slowdown On Most Everything

I feel dumb asking this, being A+ certified and all that, but I'm not sure what to start at. So this problem has been getting progressively and progressively worse, and now it's to the point where ...
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1answer
34 views

Safety with CPU amount on Windows 8.1

I am trying to completely max out a Lenovo Edge 15 with an Intel(R) Core i7-4510U CPU with 8 gb of RAM( 16gb coming in the mail, also the max. It also has a Samsung evo 840 256 gb SSD. My concern is ...
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1answer
33 views

CPU Overheating at boot

I've had this trouble for months but this time got further and senseless. I have a DELL Latitude E6410 4GB Ram 2.40 Ghz and no battery only cord power source. I've already had this problem before and ...
0
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1answer
25 views

PC inspiron 1525 won't boot after upgrading CPU to T8300

My PC inspiron 1525 does not boot ater I changed CPU to T8300 and updated BIOS to A17,I upgraded RAM to 4GB.However it boots with the old CPU T4200.Anyone has suggestion to resolve this problem.
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2answers
68 views

Real CPU usage - Task Manager

I have question about CPU usage, why does the Windows Task Manager shows me different CPU usage? I tried make some stress test where it showed me CPU usage 100%, but Task Manager shows only 65% usage. ...
0
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0answers
19 views

PC wont boot when graphics card plugged in

I recently got new motherboard/cpu/ram, though the PC wont boot at all when the gfx card is plugged in. Gfx card is still old and quite outdated so I was thinking maybe it is imcompatible? PC ...
1
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0answers
29 views

Computer fully restarts with no POST under any significant load

Specs: i5 3570k GTX 670 Corsair HX750 PSU I built my desktop a few years back and it has worked like a charm up until the past week. Whenever I try to play any game, besides non-intensive stuff like ...
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2answers
1k views

Windows 10 64-bit requirements: Does my CPU support CMPXCHG16b, PrefetchW and LAHF/SAHF?

I'm currently trying to find out whether or not it would be a good idea to update my slightly dated notebook (Windows 7, 64-bit) to Windows 10. The problem is that Microsoft states in their Windows 10 ...
0
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0answers
28 views

VT-X prevents boot

this is what happened. I was trying to run virtual box on my computer, but it gave me the error message, that I needed to activate VT-X. So, I booted into the bios and set the option for Intel ...
0
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1answer
51 views

Laptop shutting down automatically - BIOS overheating [closed]

My 4 year old laptop shuts down automatically with an error message 'The System has prevented from Bios overheating' when try to restart the laptop. It happens often and it was working for at least ...
1
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1answer
45 views

Why is my motherboard's CPU temperature inconsistent with the individual core temperatures? [duplicate]

This image demonstrates what I'm talking about: The motherboard's CPU temperature is in green. The individual cores' temperatures are in red. I've tested the temperatures in three different ...
0
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1answer
74 views

What is the difference between CPU and Core temperatures? [duplicate]

While trying to figure out why the performance of my machine has suddenly severely degraded, I noticed that although CPU temperature is being reported as 45C while idle, the temperatures of all 6 ...
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0answers
20 views

How to Match Memory to FSB (pre IMC)

I have the following hardware: P35-DS3L supporting FSB 333/266/200 Mhz, quad-pumped. Four dual-channel slots. E2180 currently @ 2.00Ghz (200.00x10) I plan to raise the FSB to 266.66. This is my ...
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0answers
49 views

CPU maxes out at 100% when I use 2nd RAM slot! why?

I recently re-installed windows and went from a 32 bit install of Windows 7 Ultimate to a 64 bit install of Windows 7 Ultimate. Computer ran fine before the re-install but I just wanted to switch to ...
0
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0answers
154 views

Get Windows 10 icon on the taskbar without NX support?

I have an old Pentium 4 PC running Windows 7. The CPU doesn't support NX. I have seen some methods for disabling the NX check given a Windows 8, 8.1 or 10 Technical Preview ISO. But I want to get ...
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0answers
21 views

QEMU CPU Emulation Capability

Is it possible to emulate any/all Sandy Bridge CPUs using QEMu? Specifically, I am trying to get something akin to an Intel Xeon E5-26xx (a SandyBridge processor) running on hardware employing a ...
3
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1answer
68 views

Vagrant + Virtualbox CPU utilization very low in Windows 8.1

I am running a Virtualbox VM that runs Ubuntu 14.04 LTS provisioned by Vagrant. There are 2 physical cores in my computer (Dell Inspiron Laptop), which I assigned both of them to the VM (this I ...
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0answers
36 views

Unlock BIOS config

I have ASUS x101h EEEPC and I want to overclock CPU, but BIOS clock settings are locked. Is there a way to unlock BIOS or update BIOS which have those options unlocked? CPU is Intel Atom N435
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2answers
63 views

How does airflow work inside ATX PSUs with 12cm fans? [closed]

It sucks in air from inside the case but how does the heated air get out of the PSU? There's holes at the back but we all know that hot air doesn't travel sideways unless forced. Also in my case the ...
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2answers
530 views

Unsupported C.P.U for windows 10

I have Intel i5-4200u . Earlier the windows get application showed that my laptop can run windows 10. But it performed another check on 13-6-15 and it now shows that my c.p.u is not supported.Is this ...
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5answers
83 views

Confused about GPU having hundreds of processors inside it

I just started learning about parallel programming course on Udacity and already I am kind of confused. Here at this video segment: https://youtu.be/gbj0oauFFI8?t=52s We're told that the average GPU ...
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1answer
56 views

Is my computer fast enough to play league of legends? [closed]

Do you guys think that a Intel Celeron E1200 Dual-Core Processor, with 2 gigabytes of ram is fast enough to play league of legends, provided that the rest of the system is good enough.
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2answers
67 views

How to find what's causing my pc to drag at certain times

I'm a software developer working on a Windows 7 machine with an i5 processor and 16GB of RAM. Most of the time the machine runs just fine. However, when I boot up in the morning, within 10 minutes of ...
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1answer
41 views

High CPU/MOBO temperature even after cleaning and reinstalling

Even after dissembling my laptop and cleaning it, the temp of my CPU and Motherboard hangs around 41+ degrees Celsius while idle and no apps running. It used to be much lower and my laptop gets really ...
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0answers
31 views

Computer doesn't start when 12V CPU power plugged in

Configuration (troubleshooting): Board: Socket AM3+ Gigabyte GA-78LMT-S2PT CPU: AMD FX4300 PSU: 500W Peak Other components: GPU: ASUS Nvidia GTX960 Mem: 12GB (8+4) 1333 HDD: Seagate 1TB SATA ...
0
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1answer
130 views

High CPU - NT Kernel & System, Windows 8.1 Pro 64-bit

I have 64-bit Windows 8.1 Pro, Lenovo X220. All updates are installed (both Windows and from Lenovo Solution Center). Every time my computer starts, one of the processes uses 25% of CPU (until ...
0
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1answer
38 views

High cpu usage mostly by System process. stdriverx64.sys. Windows 7

System process uses 20-45% of cpu when idle. Process Explorer shows that it's connected with stdriverx64.sys. I found information that it may be connected with audio drivers. I tried to uninstall them ...
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1answer
23 views

Is the motherboard of HP Compaq Presario CQ5306UK compatible with Intel i5 or i7 processors?

Is the board compatible with any of the i5 or i7 chips, ? I see on this page: http://h20564.www2.hp.com/hpsc/doc/public/display?docId=emr_na-c01981373 It mentions 6 compatible processors, but is it ...
1
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1answer
55 views

Will my CPU get fried if my water cooler fails?

When using a conventional cooler, there is an additional safety net due to radiator's thermal capacity (even if the fan fails). What is not the case for a water cooler. Do I have a risk of getting my ...
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0answers
53 views

Computer Freezing/Crashing While Gaming, I've Checked Everything, CPU or Motherboard?

MSI P67A-GD65 (B3) Intel i7-2600k NVIDIA GTX 980 16GB DDR3 EVGA 750W PSU I've been having an issue when gaming. They're either crashes or hangs, whatever you want to call them. Both screens will ...
0
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1answer
35 views

Is there any detriment to using an AMD processor alongside an Nvidia GPU?

Every single sales person or computer "expert" I have encountered has advised against doing a combo like this but I have bought a GTX 560 and an AMD FX-6100 and they worked fine for 5 years so far. Is ...
0
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1answer
18 views

Is the heat dissipation or power dissipation of a CPU the same on same voltages?

On frequency x a CPU runs at 0,8 Volts. On frequency y the CPU runs at the same voltage, but frequency y is much higher than x. Question: Is the heat produced by the CPU on both frequencies the same? ...
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52 views

New laptop's performance not very good. Is it defective or normal?

About a week ago I bought a new laptop. It's a Dell Inspiron 15 5548. It has an i7-5500U CPU @ 2.4 GHz, and 16GB of RAM. It was about $1000. I don't game or do anything very strenuous to the ...
0
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1answer
72 views

How to set CPU frequency on OSX?

My colleagues have been complaining about my computer making too much noise, and they're constantly asking me to do something about it. On my Linux, I used to set a lower CPU frequency to avoid ...
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4answers
162 views

Core i3 vs Core i5 [closed]

I'm in a dilemma to choose between Intel Core i3 and Core i5 CPUs. I'll be using Microsoft Office along with some browsing and some other general purpose activities. Will I be seeing a big difference ...
2
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2answers
96 views

Computer crashing about 20sec into booting (even in BIOS). CPU or Motherboard?

EDIT: we seem to have narrowed the problem to CPU or Motherboard. Is there any way I can identify the cause between these 2 without a spare part to test? I was playing Minecraft for the first time on ...
0
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0answers
19 views

AIDA64 monitores only HDD temperature

I installed AIDA64 extreme edition on my laptop to monitor laptop CPU temperature, but, surprisingly, there are no other temperatures but HDD's temperature. I checked bios for some settings, but my ...
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1answer
51 views

CPU Intel Core i7-4790 PCI support

I am planning to buy Intel Core i7-4790 and use it in combination with Asus Z97-AR motherboard. The motherboard has 2 PCI slots, will these be still working with the CPU? The specs on Intel web site ...
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1answer
52 views

How can I choose the right memory Mhz size in the light of the motherboard's and CPU's MHz? [closed]

I'm planning to build a PC: Gigabyte GA-Z97X-SOC DDR3 2400Mhz(OC) motherboard http://www.gigabyte.com/products/product-page.aspx?pid=4967#ov Intel Core i7-4790K Processor DDR3 and DDR3L 1333/1600 at ...
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2answers
39 views

CPU running slower than normal - and hotter

Some liquid got spilled on my PC. I cleaned it up but when trying to turn it on I noticed that there were some drops of water on the CPU (AMD). The PC wouldn't turn on - it would start up, but nothing ...
2
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1answer
26 views

Alienware M14x going real hot in Idle

I have an Alienware M14x which I started noticing the fans going extremely high at idle, pretty much right after a boot too. I downloaded HWMonitor to check what's up and it turns out it's at about ...
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2answers
37 views

Will process run slower on one thread rather than one core

So many CPUs now come with 2/4 cores and 4/8 threads. There are also some CPUs that are 4 core & 4 threads. Would that mean that unparalleled process will run slower on the same clock cycle CPU ...