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

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Intel Turbo Boost temperature safety limits?

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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5answers
2k views

Why does a CPU have a clock? [on hold]

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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Intel Atom D2500, 64-bit mode

I have an Intel Atom D2500 processor which the spec site claims it supports a 64-bit instruction set. However, cpuinfo shows this: # cat /proc/cpuinfo | egrep "(processor|flags|address)" processor ...
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0answers
18 views

Does a faster hard drive put more strain on the CPU? [on hold]

I have been using an SSD on my old Thinkpad T60. My common sense tells me that fixing one bottleneck creates a new one. ?? If I put a 7500 or a 5200 in, it will slow things down, but will it also ...
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0answers
16 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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1answer
35 views

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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7answers
34k views

TiWorker.exe - Very High CPU Usage

I have a laptop running Windows 8. Although it originally ran well, it started having very bad performance issues. I decided to perform some research into the topic. Opening up Task Manager, I ...
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1answer
251 views

How to overclock CPU using only FSB?

According to my BIOS the CPU temperature and the system temperature are 16°C and 18°C respectively for Idle on stock air cooling. (It used to be 40°C and 48°C when I kept my computer inside a case. ...
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1answer
2k views

CPU fan turns on for a second and stops, PC does not start at all

I have checked my PSU and it works fine. When I turn on the MOBO, the CPU fan, case fans and the psu fan itself turn on for half a second and then turn off. The PC remains off. The Bios light turns ...
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1answer
43 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
27 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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13 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
22 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 ...
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0answers
23 views

How to limit the fan speed to X until temperature Y? (or similar)

Even though my laptop is cold, whenever I plugged it in, fan speed increases. How can I manually override the settings so that the fan speed is limited to X until temperature Y? (or something similar) ...
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0answers
21 views

cpu temp vs core temps

i have an amd phenom quad that reads idle "core temps" around 85C while the bios is showing "cpu" temp around 40C (speed fan, core temp, etc all show the 85C core temps at idle) .... so far my pc has ...
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1answer
14 views

average load does not get lower than one

I have a strange situation when with seeming low cpu load average load is always higher or equal than one output from htop: 1 [|||| ...
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1answer
2k views

Flash stream makes my internet slow and cpu rush

When I try to watch a live Flash stream, my CPU usage goes up to 75% and my Internet speed goes down. If I run a test before the video-stream, my speed is ~40/10Mbps and during the stream it drops to ...
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3answers
4k views

Mac OS X Server 10.6.6 “disables” CPU in VMware Fusion

I installed Mac OS X Server 10.6.0 in VMWare Fusion the other night and it worked perfectly, until I ran Software Update. I upgraded to 10.6.6 through the combo updater, and now when I start the VM it ...
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10answers
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What's the difference between mobile and desktop processors?

I just read about the new Samsung Galaxy Note Edge having a 2.7GHz quad-core processor and 3gb of Ram. The laptop I bought last year by HP is 4 Gb of ram and 2.3GHz quad-core and my iMac is even ...
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0answers
43 views

Testing x64 motherboard/CPU

How should we be testing/burning-in the principle components in a new build (or significant change)? Here is what I'm doing now and what I find disconcerting about it: Using the latest UBCD on a ...
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10answers
37k views

How can I determine whether my processor is 32-bit or 64-bit?

How can I determine whether my processor is 32-bit or 64-bit? My processor is AMD Phenom 8450 triple-core.
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4answers
60k views

How to reduce Google Chrome's CPU usage?

I have started using Google Chrome (up to date) on Windows 7 (everything up to date) on a clean install I did a few days ago and compared to Firefox I am seeing huge CPU spikes (up to 100% CPU ...
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0answers
17 views

What features of a Xeon E3 processor will not work on an H97/Z97 chipset (and vice versa)?

LGA1150 Xeon processors appear to be supported on consumer motherboards with LGA1150 sockets. Xeon chips lack an integrated GPU, of course, so onboard video can't be expected to work in this ...
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0answers
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Visual Studio 2013 keeps freezing on Windows 8.1 pro

I am having an issue on my machine everytime im in visual studio my pc just locks up I can move the mouse or nothing and I am forced to shut the machine down. The machine is A AMD 4.0ghz 8 core ...
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2answers
55 views

CPU fan speeds up in fullscreen mode

I have desktop PC with Win7. In BIOS I've reduced CPU fan speed and it seems to work fine in all applications. However if I start something in fullscreen, the fans speeds up immediately and becomes ...
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4answers
111 views

Laptop performance much slower after blowing out fans

I have an HP G60 Laptop. It's an old laptop that I got around 2010. It has a Pentium dual-core cpu (2.00 GHz), and 3 GB of memory. It was Windows 7 I resurrected this laptop mid-last year after my ...
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0answers
26 views

Running Linpack on Linux High performance computer

I am trying to do some benchmarks on Linux HPC machine which specs are as following Total CPUs: 160 cores using latest 16C AMD Opteron Processors Total main memory: 640 GB of 1600MHz Total GPUs: 1024 ...
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0answers
23 views

Turbo boost is on even when CPU utilization is at 0 percent

My new server is behaving strangely, it seems that turbo boost is always on even when there's no utilization. The OS is windows server 2012 r2 and power option is set to balanced with default BIOS ...
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1answer
41 views

How can I map 4GB of RAM memory to 4GB CPU address space [closed]

I'm confused with a situation where there is 4GB of CPU address space and I have 4GB of RAM memory. Now is it possible to map this whole 4GB of RAM memory to CPU address space and if so, then where ...
1
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1answer
2k views

How to Track CPU and Memory Usage Per Process

I have seen this question asked on here before but was unable to follow the answer which was given. I would like to monitor a processes CPU, Memory, and possibly GPU usage over a given time. The ...
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0answers
52 views

Intel turbo boost falls back to default 2.4GHz just when it's needed most. How can this be resolved?

Intel Turbo Boost has my laptop running at 3300 MHz most of the time. My power settings are maxed out, so it stays there most of the time while I'm browsing the Internet and stuff, but once I run a ...
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1answer
55 views

Windows 8.1 Periodic lag in all games, e.g: 3-4s @90fps then 4-5s @30fps, cyclic [closed]

Very periodic, very predictable, always the same, tested with portal 2, monaco, shadow puppeteer, hammerwatch. Same regardless if I set the cpu at various min/max clock rates, always low cpu load ...
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1answer
5k views

High Disk I/O and CPU usage of System Process in “System Volume Information”

I've a problem with high disk IO and cpu usage from the system process. With the performance monitor I can see that it writes and reads about 100MB/s froM "System Volume Information". I tried to get ...
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0answers
25 views

How to check if Xeon sandy bridge be replaced by ivy bridge

We are running algorithms that would benefit from faster RAM. We currently have a Dell T5600 workstation with 1600mhz RAM, but with 2 CPUs that are limited to 1333 (Xeon e5-2620). The cheapest ...
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6answers
21k views

Is it OK to use toothpaste instead of thermal paste when fitting a CPU?

I was told many years ago to do this by someone who at the time knew more than I did. The CPU was a celeron in the Pentium 2 era. It ran cooler with the toothpaste between the chip and the heatsink ...
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0answers
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Confusion about CPU/Core/Processor [duplicate]

I'm quite confused about the exact meaning of CPU, Core and Processor. My questions are the following: CPU and Processor are synonyms? Which is the difference between CPU and Core? Which is the ...
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4answers
1k views

Putting i7-4790K under full load causes triggers a hard reset (computer shuts down with no error message)

My computer is crashing when the CPU is put under 100% load, but not when it put under 90% load. The components are: CPU: i7-4790K (not overclocked) Heatsink: Cooler Master Hyper 212 Evo ...
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0answers
30 views

computer freezes 5 - 10 minutes after boot

I am running Windows Vista, for 3 years I have had no problems, not one. Now - after the second reformat I have ever done on it, it freezes after a seemingly random amount of time after boot. It ...
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2answers
53 views

Ways to know whether my Laptop fan is working or not

On my Laptop the CPU Core Temps. have been relatively high recently (I think) and so there's a nagging doubt in my mind whether any of the internal fans have failed. What are other alternative ways to ...
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1answer
25 views

Dell Inspiron laptop CPU heating up on connecting to full hd monitor

I have Dell Inspiron 14 3421 laptop. It has display resolution of 1366x768. I have connected HP 22fi IPS full hd monitor to this laptop. But i have noticed that every time i connect the monitor, the ...
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6answers
25k views

What regulates Intel SpeedStep CPU throttling? Can I get some control of this on Windows7?

I’m trying to get a big virtual disk file compressed (using WinRar) before I go home today, but my CPU frequency keeps merrily going up and down between the nominal 2.8 GHz and a measly 800 MHz! The ...
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2answers
55 views

How does an instruction in a CPU report that is has finished?

When an instruction is sent to a CPU, that may take multiple clock cycles to complete, when does the CPU know that the instruction has finished and can start processing the next one? I'm mostly ...
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0answers
28 views

What is the relationship between PMU and PEBS for intel CPU?

I know for intel CPU families, there are PMU (Performance Monitoring Unit) and PEBS (Precise Event Based Sampling). What is the relationship between them? Per my understanding, the PMU contains PEBS, ...
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4answers
4k 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 ...
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1answer
125 views

Windows 8.1 CPU utilisation never exceeds about 30%

I'm writing a C++ application using Visual Studio 2013. The application iterates through an image doing some complicated analysis. The analysis is not particularly slow, but in order to test code ...
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4answers
4k views

What direction should the heatsink fan face?

My current setup looks like the following: Rear fan <----- Heatsink Fan <----- Heatsink Case: Arc Midi R2 Heatsink: Scythe Ashura with stock fan I've placed the fan so it sucks the air out ...
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1answer
31 views

Is it possible to use GPU to boost performance of computer automatically? [duplicate]

As we all know GPU is a sleeping beast. And we are also familiar with Intel's Turbo Boost technology which is really great. But, Intel's Turbo Boost technology works only on CPU by overclocking CPU ...
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3answers
63 views

What good is onboard processor graphics in a Xeon? [closed]

When I put together my FreeNAS box. I bought a CPU without on-chip graphics because I’m not using any display at all. But I was surprised to learn that the motherboard integrated graphics would work ...
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4answers
2k views

Why is the Core i5 5300u rated better than the i7 5600u?

I just purchased a new x1 Carbon with all the bells and whistles. I got a Core i7-5600u which I really thought would be the better chipset to get. But now I'm looking at some benchmarks and the ...