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3
votes
1answer
41 views

Why is my CPU running slower than it should be?

I have an AMD FX(tm)-6100 Six-core processor that should run at 3.30 GHz, however upon trying to overclock the processor (which I never got around to doing) I have found that it is running at 1.4 GHz ...
0
votes
0answers
14 views

Slowing Multicore CPU Speed

I have an older screensaver that I like to play with, but it runs at super fast speeds which makes it a pain to use, so How do I slowdown a multicore CPU to enable older programs to run at the proper ...
0
votes
3answers
67 views

Why does reducing CPU frequency improve battery life?

Shouldn't we have roughly the same battery life regardless of the frequency since the higher the frequency is, the faster tasks will complete so in the end the CPU, despite running at a higher ...
0
votes
0answers
29 views

Difference in performance between ARM and “traditional” CPU on Raspberry PI example

I'm not sure if my question fits here, but I will give it a try since it does not seem to fit any other StackExcnhange. New day ARM processors are slower (if you look at MHz - 500MHz in RPi case). ...
-2
votes
1answer
41 views

Need help comparing Laptops with best speed RAM

I am planning to buy Lenovo Yoga 2 11.6 Laptop, but I do not understand The difference between the RAM in comparison. Windows OS. Hard Drive. Thanks, Here is Screenshot. Link to screenshot. ...
0
votes
0answers
33 views

Why does my app run much faster on my laptop than my VPS?

I have a web application with a Ruby backend that does some stuff that is a bit computationally intensive. I develop and test the app on my rMBP with a 2.7GHz i7. I have the app deployed to a Linode ...
0
votes
0answers
16 views

What is more important on a cpu? [duplicate]

What should be the criterion upon I should decide whether or not to buy a processor its speed? or the number of cores? meaning should I seek out a processor which is fast but has 2-3 cores or is it ...
68
votes
9answers
11k views

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 ...
0
votes
2answers
52 views

Is it bad for a CPU to be running at a high speed for extended periods of time?

I have an Intel Core i7-4770S (3.10 GHz) that can go up to 3.9 GHz in turbo mode. Windows Task Manager can report it going up to about 3.5 GHz when playing certain games and probably goes higher every ...
0
votes
0answers
32 views

How to compute the total speed

I am hiring a VPS (Perfetto4) from Mochahost with 2 cores of 2,27GHz. The promissed speed is 2,7GHz total. The multiplier is 11. How do I calculate the total speed of CPU? Is 2 cores of 2,27GHz ...
0
votes
2answers
25 views

Best factor for determining the bettering of CPU [duplicate]

First of all, if my English is not good please pardon me. Now the problem; when comparing many CPUs with each other, which factor is the best one? For example, there are many various types, like, ...
1
vote
0answers
54 views

Windows 7 - Acer Aspire M5811

I have a problem with my Windows 7 Desktop PC. Today I used it normally and it turned off normally to, but the next time I tried to turn it on, it became extremely slow. It's normal until I need to ...
0
votes
1answer
197 views

CPU frequency is very low and system is very slow too in core i5 vaio laptop

Sometimes I notice that system is very slow and when I see task manager, these are information in performance tab: Utilization: 8% Speed: 0.2 Ghz Maxsimum speed: 2.5 GHz Hardware details are: ...
0
votes
0answers
44 views

CPU Clock, Hirens BootCD, Windows XP

I have an older laptop I am thinking of multiple uses for it. The laptop ran windows xp terribly slow so I did a fresh install of windows xp and it still runs terribly slow(yes i installed the correct ...
0
votes
2answers
36 views

How are CPUs so freakin fast

I am going through a book on C and it said "Write a program that counts from 1 to 300 million, printing the number only if it is a multiple of 100 million. Use a stopwatch for fun to time the ...
2
votes
0answers
76 views

Utilizing the full power of my workstation

I am not a gamer. Used to be, 10+ years ago. My workstation is strictly for business: Quickbooks Excel Access General Business QuickBooks is tied to a synchronization engine that is synchronizing, ...
1
vote
0answers
268 views

How do I underclock my Macbook AIR?

When my MacBook gets below 1% battery life I believe the CPU slows down. The battery indicator states I have 10 minutes left but those are the longest 10 minutes in the laptop cycle. Is there a way to ...
-1
votes
1answer
389 views

AMD FX 4130 overclock-How to overclock the CPU from the BIOS [closed]

Well I've been using my CPU for awhile now but I want to unlock it's full power but when it comes to CPU overclocking I've never been good with it nor taken the time to learn it from these bad video's ...
0
votes
1answer
152 views

Why is my CPU slowing down? (power settings and temperature are OK)

I realise others have posted similar questions, but I'm having trouble working out why my processor isn't running at full speed. I'll keep this visual. Given this: ...and this: ... why does ...
0
votes
1answer
79 views

Processor Throttling, Speeds and Battery life

Does throttling the CPU down give you more battery life? Does i3 give you more battery life over an i7? Just I've not had the options to really test this theory as it requires having the same laptops ...
2
votes
1answer
253 views

How can I monitor CPU frequency on Linux servers?

At low CPU frequency, latencies can be higher or we may come to some wrong conclusions related to server capacity. Knowing the CPU frequency is important for high performance scenarios. In case of ...
1
vote
1answer
125 views

CPU heating too much, cpufrequtils to limit its speed works weird

I am using an Intel i5 powered laptop and my OS is a 64 bit Linux Mint 14, kernel version 3.5.0-43. Up until now the CPU usage policy was ondemand and it usually was working at 2.40Ghz. In this setup ...
0
votes
0answers
101 views

Why doesn't my PolicyKit localauthority file allow me to use cpufreq-set?

I'm trying to configure Xubuntu in such a way that I can change the CPU governor and maximum frequency (using cpufreq-set) without sudo. I created an ...
0
votes
1answer
342 views

What does cpu MHz mean in /proc/cpuinfo?

I own Quad-core Core i5 laptop. I got curious to know how much time it takes for my laptop to execute a simple instruction. So, I did cat /proc/cpuinfo. Below is the relevant portion of it, model ...
0
votes
1answer
65 views

Disabling CStates/TurboMode in Windows

In Linux I know how to boot and have cstates disabled to get full CPU power. How is this done in Windows? Does it vary based on Intel and AMD?
1
vote
1answer
5k views

Change CPU Clock Speed from Windows

How can I change the CPU clock speed of my computer? It is a Dell Inspiron 5720 laptop, running Windows 8.1 Pro. In Linux, I know there are ways of doing this from the operating system itself, instead ...
2
votes
1answer
88 views

Is there a noticeable increase in computer performance moving from a Dual Core to an i5?

I have an i5-3470 3.2Ghz and 6GB or RAM. I also have a Dual Core E5700 3.0 and 8GB or RAM. Both use Windows 7 Pro. I am currently using the latter. I would like to use the i5, but as a developer, ...
0
votes
1answer
46 views

Any rerefence of CPU world statistics? [closed]

I am looking for any referencee about computer power statistics across the world. My main interest is about real computing capabilities, so I'd prefer information about real processor power, and even ...
-2
votes
1answer
68 views

Should I compare CPUs based purely on advertised speed? [duplicate]

There are many types of CPUs, like Pentium, Atom, core 2 duo, core iX (X = 3,5, ....), But I always don't look at them this way! I always look at their speed which in GHZ unit and then compare them ...
0
votes
0answers
71 views

Starting any process and suspending it lowers CPU from ~50% to ~5% in Vista, Why?

While doing a little housekeeping on a Windows Vista installation, I discovered that suspending any winlogon.exe subprocess would lower the CPU usage from the normally observed 50% usage down to ...
2
votes
0answers
36 views

Back of the envelope calculation for speed of matrix multiplications [closed]

I'm trying to develop an intuition for how feasible/scalable machine learning algorithms are. The dominant cost is always matrix multiplications, but there seem to be no readily Google-able resource ...
3
votes
3answers
1k views

Hypothetically, can I swap processors between a smartphone & a desktop?

When manufacturers mention the speeds of smartphone processors, is it right in my understanding that the speeds between smartphone processors and desktop processors are comparable? In other words, ...
54
votes
4answers
4k views

Why do some old games run much too quickly on modern hardware?

I've got a few old programs I pulled off an early 90s-era Windows computer and tried to run them on a relatively modern computer. Interestingly enough, they ran at a blazing fast speed - no, not the ...
1
vote
1answer
168 views

Can I run a Pentium 4 on 100% for an extended amount of time?

I want to use my Pentium 4 desktop for running some heavy simulations. These simulations take from two to eight hours. Is it safe to run the CPU at 100% for such a long time?
0
votes
5answers
311 views

What is the technical term “clock speed” of a cpu

I often have heard people telling they have so and so clock speed. So what does this clock speed mean and does it determine the speed of a system? What is its significance?
0
votes
0answers
34 views

CPUMON mhz reading weird

I am using this cpu usage monitor: http://www.den4b.com/?x=products&product=cpumon. They give a cpu speed monitor (im assuming to monitor speedstep). However when the computer is idle it seems to ...
4
votes
2answers
141 views

What should I be looking at in order to speed up a program that needs a lot of processor power and cores?

I want to build a system in order to run one particular specialised program as fast as possible (currently it can take up to 50 hours to do a run on my laptop with an I5-processor). The program is ...
1
vote
0answers
66 views

Percentage cpu use for a particular job decreases over time in Windows 7

I have a multi-core workstation running Windows 7. When I submit a job to run on 12 cores, things go fine, but after some time the percent of the cpu the job occupies decreases from ~30% to 3% even ...
0
votes
1answer
3k views

Windows 8 not using max CPU speed on heavy operations

On my Windows 8 laptop, whenever I'm doing video transcoding with Handbrake, it seems to limit the CPU usage to 44% and the CPU frequency to 42% or 43% of max allowed. That probably means the CPU ...
0
votes
2answers
2k views

Finding the memory bandwidth of each core of my processor

Hi I am learning PETSc (a software for solving PDES' numerically in parallel) and I came this passage in the FAQ High per-CPU memory performance is required. Each CPU (core in multi-core systems) ...
1
vote
1answer
2k views

How are GHz in multicore processors computed? [duplicate]

Possible Duplicate: How fast is each core in a dual-core processor? I am debating between two systems (for simplicity): (1) 2.9 GHz dual core processor (2) 2.3 GHz quad core processor ...
0
votes
1answer
2k views

How can I manually set the CPU frequency?

I have tried the following from shell: cat scaling_governor userspace cat scaling_available_frequencies 3326000 3325000 3192000 3059000 2926000 2793000 2660000 2527000 2394000 2261000 2128000 ...
0
votes
1answer
1k views

RAM speed slower than CPU speed - Why?

On the specs of a computer I saw, it said the CPU speed was 2.something Gigahertz, but the RAM speed was 1300MHz (1.3GHz). That does not make sense, why would the RAM be slower than the CPU? You could ...
4
votes
2answers
665 views

What does the file /proc/cpuinfo tell me about the hardware?

I rent a server which should have "2 Cores x 2,2 GHz". When in run the command cat /proc/cpuinfo I get the following result: processor : 0 vendor_id : AuthenticAMD cpu family : 15 model : ...
2
votes
0answers
2k views

How to adjust Turbo Boost Ratios on Mac?

My ratios are set to 0035 on my 2012 13" Macbook Air. In its specs it says that it can be boosted up to 2.8 Ghz. With my current ratios only 2.3Ghz is possible. Basically I'm wondering how I can ...
4
votes
3answers
3k views

Processor always at max speed

I am running Windows 8 Pro on an Apple MacBook Pro 9,1 Mid 2012 15 inch non retina. It has a Core i7-3720 QM CPU @ 2.6 GHz. For the past few days, I have noticed that it is constantly running at max ...
3
votes
2answers
5k views

Mobile CPU vs. Ultra-low voltage CPU: performance [closed]

I'm choosing a new laptop and one of the questions is a type of CPU — mobile or ultra-low voltage. If to be more precise, I'm torn between two models of Intel Core i5 — i5-2410M (Sandy Bridge) and ...
2
votes
2answers
3k views

what is the difference/similarity between MIPS and FLOPS?

I believe both MIPS and FLOPS are metrices for calculating processor speed. What is the difference between them? Are they in any way related or dependent on each other?
1
vote
3answers
4k views

How speed and frequency of a processor are related to each other? [closed]

I think that clock rate of processor determines the speed of core, in my case it is 1.86GHz. But If I am not wrong, it also determines that how much energy it will consume. If you have more frequency ...
148
votes
15answers
19k views

Is the performance of a CPU affected as it ages? [closed]

This is a hypothetical question about how a CPU operates. If I purchase two identical CPUs, and use one long term (say one year), will it be identical in speed to the unused CPU? Will the number of ...