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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17 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
14 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
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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1answer
33 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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1answer
42 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
26 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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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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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
17 views

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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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 ...
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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
42 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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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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0answers
18 views

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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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
52 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
24 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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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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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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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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1answer
44 views

Does CPU temperature affect CPU lifespan? [duplicate]

As long as a CPU's temperature stays below the manufacture-specified maximum, does a CPU's average temperature affect its lifespan? For example, my laptop's maximum CPU temperature as specified by ...
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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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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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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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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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24 views

CPU spike when watching video or gaming

I recently built my new pc over christmas and it has run flawlessly since then. But now i am noticing that i get a cpu spike (only lasts less than a second) that will freeze the video im watching or ...
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32 views

Strange CPU Usage History

My CPU history graph on the task manager is acting strangely. The fan also seems to be "revving". Here is an image of what is happening. This is my laptop and the processor is Intel core i5. ...
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1answer
43 views

Do I need ECC support on motherboard in order to use ECC RAM? (even without ECC functionality)

I have this board: http://www.gigabyte.com/products/product-page.aspx?pid=2960 I want to buy 16GB ram modules, but I found that ECC fully buffered modules are MORE CHEAP than non-ECC modules ECC: ...
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0answers
50 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
61 views

Is it possible to upgrade my Dell Inspiron 3421 processor? [closed]

I have Dell Inspiron 3421 Touch laptop. I'm planning to upgrade my PC for performance. (because it is performing poorly with heavy development softwares) I'm planning to buy this i7 processor. Will ...
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0answers
40 views

Hi10P support for Intel Bay Trail Z3735F

I want to know if the Intel Bay Trail Z3735F is capable for playing 1080p 10-bit videos, does anyone has experience with this processor?
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2answers
48 views

How to find the source of a burning smell in my computer?

Recently I find small unpleasant smell (like burning smell) from my desktop computer, not always, but from time to time. I don't know where it is from, but as I turn off the computer and sniff closely ...
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1answer
23 views

Does Intel QX6700 work asus p5g41-m motherboard? [closed]

Does Intel QX6700 work Asus p5g41-m motherboard?
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2answers
34 views

What is CPU bottlenecks and how does it affect me?

First some facts: I have an MSI GT70 gaming laptop equipped with a GeForce GTX 780M 4GB graphics card. I am considering upgrading to an MSI GT72 equipped with a GTX 980M 8GB graphics card. I play all ...
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0answers
17 views

How to read CPU load with Java on AIX

I checked /proc FS on AIX 6.1 in order to get some values for CPU load but unfortunately I could not find anything useful. Is there any text file in AIX which I can use to get these values similar ...
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1answer
25 views

why in Linux VM like vmware and XenServer, physical id > the number of cores in /proc/cpuinfo

This was only observed in Linux virtual machines. In /proc/cpuinfo, the physical id could be very large, exceeding the number of cpus. For below example, 4 core systems but the physical id is 13. ...
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0answers
117 views

Incorrect CPU temp on AMD A10-7850 APU (Kaveri) on Ubuntu Linux 3.16 kernel

My machine has an AMD A10-7850K APU which runs very nicely. I installed Ubuntu 14.04 when it was released, however it launched with the 3.13 kernel which did not have official support for Kaveri ...
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0answers
12 views

What do CPU speeds mean in modern processors? [duplicate]

In the past (late 90's I guess), a processors clock speed was the speed at which it operated Currently however, a processor scales its speed up and down depending on various factors. Example: I have ...
0
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1answer
36 views

x86 live image on a x64 processor

I have a live image of ubuntu, and I will be using it for programming. It came with a book, and the book mentions that it has to be used on a x86 based-processor. I have an AMD64 processor, so my ...
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1answer
39 views

How do I know if my CPU is bottlenecking my GPU? [closed]

I have a FX-6120 processor, and a 750 ti graphics card. How do I tell if my CPU is bottlenecking my GPU? And more importantly, how can I know what bottlenecks what in the future when I'm shopping for ...
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3answers
51 views

does IO Port address belong to RAM?

I have been using linux(ubuntu). To communicate with IO devices, IO ports Address are used ex. 0x378 for parallel port. Is IO port address are actual RAM address ? If its not then where it reside ? ...
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2answers
79 views

Identifying CPU from lscpu command?

Does anyone have a clue what this CPU is? Here is the output from lscpu:
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1answer
51 views

How can I determine if my Intel CPU does throttle?

I have a Dell M6600 Laptop with an Intel Core-i7 CPU, and it is becoming pretty loud and hot recently, and slows down. I suspect that the CPU gets very hot, and would like to see if the thermal ...