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

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68 views

Can a cooling fan be effective for my laptop?

Bit of a backstory here, skip to the bottom if you just want the question: So I recently purchased new HP laptop. Although I'm not any sort of a hardcore gamer, I like to play games that I ...
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2answers
30 views

Should CPU fan be run at lower power, or from PSU?

I recently bought an overclocking CPU fan for use with my Asus Sabertooth x99 MB. The CPU_FAN pins provide a max of 12W 1A according to the MB manual, but my fan is rated at 14.4W 1.2A, so would it be ...
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1answer
29 views

Freezes when under load (possible past heat damage)

I started getting freezes where the last frame on screen stays and the fans slowly speed up. Reset button has no effect and only holding the power button shuts the pc off. I tried another PSU and with ...
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6answers
433 views

4-year old CPU more powerful than CPU released this year? [closed]

My current laptop has a Core i7-2670QM CPU which was released in October 2011: When I look at more recent laptops, with CPUs released this year, it's not clear which one is more powerful. For ...
0
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0answers
33 views

Why do some encoding (and other intense processes) run more quickly (using Windows 10) when processor is busy?

I've noticed that some computationally intense processes (in the most recent case, using Shotcut to convert an mp4 file to a gif file) seem to actually use up more of my processor's processing ...
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2answers
74 views

No Multi-Threading with R on Linux

I'm doing a statistical analysis using R on Ubuntu 15.10 operating system. My R script takes a very long time to complete. About 2 - 3 hours. Meanwhile I've checked my CPUs load. I just noticed that ...
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3answers
222 views

2 GB of reserved ram memory

I bought 2x2 GB Transcend DDR2 paired sticks for my PC and detached my old 2 GB stick. My Windows 7 shows 4GB(2GB usable). In Resource Monitor it says 2 GB is hardware reserved. I checked all hardware ...
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0answers
17 views

Is a Windows Power Plan a sum of its options?

For instance, if you were to configure Power Saver and High Performance with identical options, would that result in identical performance profiles? Or are there differences not listed in the ...
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41 views

eVGA z68 FTW Motherboard - 5 beeps on boot

yesterday when I shut down my computer it was beeping 5 times and didn't shut down correctly, so I had to use the power button to kill it. This morning when I wanted to start my PC again, it beeps 5 ...
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0answers
20 views

Benchmarking a process to run on another server

I am not too sure if there's a simple answer to this. At the moment, I have a Linux process. I can monitor this process like any other and see it's CPU/Memory utilisation. How would I be able to ...
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1answer
112 views

What's the difference between DDR3 PC3-1300, PC3-1600, PC3-12800, etc

My mainboard has only 2 slots for RAM. Currently, Speccy says that I have: 2 x Kingston 4GB DD3 PC3-10700 Can I replace these RAMs with 2 x 8GB DD3 PC3-12800 My mainboard is a Gigabyte GA-H61M-DS2 ...
1
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1answer
78 views

What instruction set architecture (ISA) is RDRAND and RDSEED part of?

I need to acquire a CPU with the RDSEED instructions for testing. As I work through the datasheets for Intel CPU's, it appears that AVX is the latest instruction set called out. See for example, an i5 ...
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1answer
64 views

Weird lines on screen – possibly graphics card issue

When Windows boots to the login screen, my whole screen goes fuzzy with lines and weird pixels all over moving about looking glitchy. When I updated my graphics card to the default "Microsoft Basic ...
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1answer
53 views

Could my CPU Temperature Sensor be broken?

One of my older computers started shutting down suddenly and when I tried running it again, it would give me the beep code for overheating. However, I tried to get some info using Speccy, but couldn't ...
1
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1answer
117 views

AMD CPU Maximum Frequency suddenly limited on Windows 8.1

Suddenly today - I can't really pinpoint when - my CPU has become locked at a low frequency, even under load. I hadn't changed any settings in Windows 8.1 or in the BIOS, and everything appeared to be ...
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0answers
46 views

IPC CPU Comparison

From what I've read, the apple cpu's from phones are faster than snapdragon's cpu's due to Cpu IPC. Does somebody knows what IPC has A9X, snapdragon 810 and snapdragon 820?
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2answers
114 views

Single thread performance increase in overclocking?

If CPU "BlaBla" has a single thread benchmark score of 2,500 at 4 GHz, how much would that single thread score increase if we overclocked it 50% (making it 6 GHz)? I assume this has to make sense. A ...
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3answers
123 views

Motherboard makes screeching/beeping sound after replacing CPU cooler

Added on Nov 9: I put the old cooler back in place, as per Keltari's suggestion, and while the sound is much less pronounced, upon close inspection I can still hear it. It may have been there all ...
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3answers
45 views

Computer randomly powering off (not restarting)

Over the past few weeks I've started to see my Windows-based machine randomly powering off. Mem-test returns nothing and I'm tossing between it being a memory problem or a processor problem. I'm ...
1
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1answer
105 views

Why is the 5960x Haswell and not Broadwell?

I was under the impression (and therefore very confused) that the 5960x was 5th generation and Broadwell, and that the 6960x would be 6th generation and Skylake (since they start with 5 and 6 ...
0
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1answer
25 views

Is a single core process reassigned to some other core automatically when the core utilization is high in linux?

Generally, by default, if a single core process starts to have high core utilization, will it be reassigned to some other core which can handle and unless it is exclusively defined not to with in the ...
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5answers
311 views

Cpu running half speed

While playing a game few hours ago I noticed my computer suddenly became incredibly slow. The windows task manager showed that the cpu was using half its capabilities. I have been playing this game ...
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2answers
66 views

Motherboard replacement issue [closed]

I have this motherboard that died - MSI P67AC43B3 and I need to replace it, but it seems there are no new motherboards that support s1155 and P67 chipset. I have an i5-2400 processor and an Asus GTX ...
2
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2answers
95 views

What does CPU column means on Process Tab on Task Manager

I have an application in Python that I have deployed in a Client. It shows 25% on CPU column on Process Tab. I wonder what it means or how it affects the CPU? Because most of the processes have only ...
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2answers
46 views

What is the relevance of the PCI-E data of a chipset when using a dedicated GPU

I'm trying to match a suitable CPU, GPU and motherboard, but I'm getting thrown a bit by what would seem conflicting PCI-E data. A GPU such as the GV-N970TTOC-4GD requires PCI-E 3.0 x16 (I'm assuming ...
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0answers
29 views

Can I build a Virtual Machine in VMWare Fusion 7.1 with a lower CPU than the physical host?

I am a Software Tester, I want to test one of our applications in a specific environment. I am using a MacBook Pro with an i7 processor + I've created a Win7 VM with 1024MB RAM and 2 processor cores. ...
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2answers
165 views

What are the benefits of using a 64-bit os, vs a 32-bit one, on the same hardware ? [closed]

I have a laptop with a Core 2 Duo processor, and I'm going to install Linux. What advantages (speed or others) are there in using the 64-bit version of my favorite distro, vs using the 32-bit version ...
0
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0answers
38 views

What CPU features does Windows 7 require?

I'm looking for the minimum CPU requirements for Windows 7. Specifically, I want to know if it requires SSE, SSE2, etc. Wikipedia states that SSE2 was a requirement for Windows 8, but it doesn't say ...
0
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1answer
52 views

Desktop performance issues

I have a desktop tech specs Core i5 / 12 GB RAM / HD Seagate Barracuda ST500DM002 500GB 7200 RPM 16MB The problem that my PC simply freezes or slow downs during of compilation code/... or whenever ...
-2
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1answer
90 views

Is SATA III 6 GB/s a bottleneck to i7 4th Gen Laptop processor

Should I consider upgrading my Sata 2.5" inch SSD from SATA to Nvme m2 SSD.I have a 512 GB Samsung EVO 850 (I get around 450 MBps read / 350 MBps write). Now that the new Samsung PRO 950(2.5 GBps read ...
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0answers
19 views

Is NBTI CPU aging, and how does it affect a PC under normal conditions?

There was a question here on SU, if a CPU can age: Is the performance of a CPU affected as it ages? the answer in short No I read a newspaper article (unfortunately in German) referencing a research ...
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0answers
389 views

Kernel-Power 89 (86) entries in Windows system log

Earlier my PC used to reboot randomly showing: CRITICAL: Kernel-Power 41(63) there were 2 AVIRA antivirus file avpbb.sys and other launching at same time, therefore I removed AVIRA FREE EDITION. ...
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0answers
21 views

Faster 32 bit execution with Hyperthreading disabled?

I am using numpy-Python scripts that take a lot of computing power to execute. The scripts themselves are already quite well written an I can say that I cannot really improve their speed by writing ...
1
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1answer
87 views

2 xeon X5650 CPU , but only 6 threads per CPU

From intel it says each CPU has 6 cores and 12 threads. I have 2 CPUs, so this should give me 12 cores and 24 threads. I can see there are 2 CPUs, but only 12 threads. I am using Windows 10 Pro, ...
0
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1answer
125 views

Visual Studio Hardware Recommendations [closed]

I am currently arguing for better hardware for our development machines. We exclusively use the Microsoft stack, running Visual Studio 2015 Enterprise and TFS 2012 Update 4, with SQL 2008R2. Our ...
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1answer
72 views

Is it important to reapply thermal paste to a new (!) CPU after removing it from the socket and installing it on a different motherboard?

My brand new outside-the-box build doesn't boot, so I want to remove the CPU from it and place it into another motherboard. The paste that was preapplied to the Intel stock heatsink has already melted ...
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0answers
79 views

Will using the dedicated graphics card improve performance?

I have a HP 1000-1205TX Notebook PC which has a Intel® Core™ i3-2328M Processor and AMD Radeon HD 7450M (1 GB DDR3 dedicated) graphics card. The processor also has integrated graphics. I am running ...
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2answers
3k views

How to know if an Intel processor is a 4th or a 5th Core Generation Processor?

I have recently bought a new Lenovo laptop having core i3 5th generation laptop. Is there any way to check if the processor is actually 5th gen not 4th gen. And what are the actual differences between ...
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2answers
119 views

Is there any way to force a Xeon 1650 v3 CPU to not change its operating frequency?

I have a SuperMicro X10SRi-F server with a Xeon 1650v3 CPU. I'm trying to disable frequency scaling on the processor without any luck (don't know if it is even possible at all). I've disabled Speed ...
1
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1answer
45 views

lscpu lists cpu clock speed incorrectly

I have a laptop that runs Ubuntu 13.04, with Intel(R) Core(TM) i5-2410M CPU @ 2.30GHz, which gets reported correctly with cat /proc/cpuinfo. However, the clock speeds are listed as 800 MHz: lscpu: ...
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3answers
137 views

Why multi core processors producing less heat

We are using multi core processors partially, because the waste heat of single core processors was to high to handle. (correct?) Now we are using multi core processors that create less heat and need ...
0
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2answers
136 views

Do modern motherboards allow a PCI-E device to access ram without involving the CPU?

I'm doing research into novel Computer architectures and I need a clearer picture of how Memory Control works in a PC. In short, I would like to know whether a PCI-E device, such as a GPU can access ...
0
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1answer
33 views

Control of CPU performance, possibly P-state, for TV recording

The problem: I am trying to record TV using a Toshiba Satellite Pro (2GHz, dual core, 4GB RAM, 250GB SSD, W7/32 SP1, PCTV 292e USB receiver, Argus TV recording s/w), but am having recording dropouts, ...
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2answers
45 views

Brand new build powercycling, no display

My boyfriend and I have a new rig here with all new parts: MoBo Gigabyte GA-X99-UD3, CPU Intel Core i7-4960X 3600 MHz Ivy Bridge-E, two 8GB of DDR4 RAM, GTX 960 4G video card, 650w Rosewill power ...
2
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0answers
57 views

What AMD processors provide RDRAND?

The latest AMD programmer manuals, dated June 2015, include the RDRAND instruction in the instruction set. Confer, AMD64 Architecture Programmer’s Manual Volume 3: General-Purpose and System ...
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1answer
64 views

What is the worst that can happen if you over clock CPU or GPU? [duplicate]

What can actually happen if CPU or GPU is over clocked? Many people over clock their CPU so much it 'toasts'. What do they mean by toast. Does it really go up in flames or does it just stop working. ...
0
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1answer
241 views

Windows 10 system process 25 % CPU

ntoskrnl.exe!IoGetStackLimits+0x3060 when pc is idle for app 4 minutes, process starts taking app 25 % (one core) of CPU. I have driver talent for update, I tried several windows 10 healing ...
0
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0answers
13 views

Sony Vaio VPCEK25EG CPU UPGRADE [duplicate]

Hi I have a Sony Vaio E-Series VPCEK25EG laptop which I bought 3 years ago. It is drastically getting slower. So I am wondering, can I upgrade it's CPU? If possible CPUs or APUs that have clock-speeds ...
0
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0answers
60 views

Understanding Intel TCase temperature and Linux sensors data

I have an Intel Core i5-4670 CPU with box cooler (it's bad, I know) and questions about it's max temps. According to ark.intel.com website in package specifications I see 72.72 C as TCase max ...
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1answer
74 views

ASUS Sabertooth Z77 + i7-3770K CPU LED Error

After two weeks and hours of testing, researching and stripping machine down to just board, psu and proc outside of box, I am still getting a CPU LED Error which is causing the unit to not post. ...