Questions tagged [cpu-speed]
The cpu-speed tag has no usage guidance.
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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 ...
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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 2.7 GHz quad-core processor and 3GB of RAM.
The laptop I bought last year by HP is 4 GB of RAM and 2.3 GHz quad-core and my ...
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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 ...
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Has CPU speed already broken Moore's law?
I remember sometime around 1995 having a computer with CPU speed of 75 MHz.
Then a couple of years later around 1997 having one that was 211 MHz.
Then a few years later around 2000 having one that ...
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Why are modern CPUs "underclocked"?
I keep reading since years about magical overclockability of modern CPUs.
It is said that CPUs (with open multiplier) which are shipped to customers with (let's say) preset 3GHz, can be overclocked "...
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Why aren't all CPUs 'overclocked' as a factory default? [duplicate]
Possible Duplicate:
Why are modern CPUs “underclocked”?
When I was searching around for a desktop awhile back I came across a lot of discussions where techies talked about taking an e....
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How to get an ARM CPU clock speed in Linux?
I have an ARM-based embedded machine based on S3C2416 board. According to the specifications I have available there should be a 533 MHz ARM9 (ARM926EJ-S according to /proc/cpuinfo), however the ...
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What does "cost per bit" mean?
I am reading William Stallings' Operating Systems: Internals and Design Principles (Seventh Edition), and a passage about memory hierarchy got me confused. What does the author mean when he mentions a ...
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Does a CPU clock frequency vary on-demand?
On my machine (not a personal computer), I have 4 cores (2.4GHz) and I currently don't have any important process running. Right now, are all of my 4 cores running/vibrating at 2.4GHz or are some of ...
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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?
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Hidden differences between system power plans in Windows?
I was wondering if—aside from the settings listed in the Change advance power settings—do the pre-made power plans change any other hidden settings like throttling, CPU clock speed, etc?
For example, ...
user635127
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How change CPU multiplier on Lenovo Intel processor?
I bought new Lenovo laptop a week ago. At first it works very well but then suddenly it started to work very slowly. After installing CPU-Z, I found that the CPU multiplier is set to 4 (from 28).
I ...
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CPU Speed stuck at 0.78 GHz, How do I increase it to its base speed of 2.30 GHz?
My 1yr old laptop, HP Pavilion 15 has it's CPU, Intel i5-8300H stuck at 0.78 GHz whenever it's plugged and charging, and the moment I remove the charger plug or switch it off, it increases suddenly ...
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What affects installation speed?
Super hardware noob here. My wife and I were installing a game on our laptops last night, from an installation file (not a disc). The game takes up about 7.6GB of HD space. My laptop installed the ...
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What is the reason for CPUs being so small?
The more transistors a CPU has the faster it is right? We seem to keep trying to make the transistors smaller and smaller yet the size of the CPU remains the same, a few cm squared.
Why isn't the ...
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Can keeping my CPU speed at "high performance/turbo" all the time decrease its lifespan?
Can keeping my CPU speed at “high performance/turbo” all the time decrease its lifespan?
And if so, what would be its expected route of failure if it does happen?
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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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Why is my CPU speed lower than it should be?
I have an Intel Core 2 Duo E6400 that should run at 2.13 GHz but when I boot my computer, the BIOS shows a CPU speed of just 1.6 GHz (I removed the BIOS/motherboard logo screen so I can see the ...
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Does TSX-NI provide an advantage when running virtual machines? [closed]
My question is about CPU architecture and the instruction set extension TSX-NI.
For which usage scenario is it useful, and especially is it useful for
web development or running virtual machines and ...
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Multi-core CPU: can I say I have a 3x2.1GHz=6.3GHz CPU?
I have an AMD A6-3500 three-core CPU. AMD System Monitor shows each core with a maximum 2100 MHz. This also shows in AMD OverDrive.
Does this processor run at the speed 3*2100 MHz?
Edit
Can I say ...
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Is it possible to down-clock a laptop CPU?
Is it possible to down-clock a laptop CPU, i.e. make it slower?
Rationale: I’d like to save battery power and generate less heat.
My laptop is an HP Compaq 6715b running Windows 7 Professional SP1, ...
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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 ...
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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 ...
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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 : ...
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Processor remains underclocked even under load
My Core 2 Duo T7200 (nominal frequency 2 GHz) is constantly running at 1000 MHz. Here's an exerpt from /proc/cpuinfo:
vendor_id : GenuineIntel
cpu family : 6
model : 15
model ...
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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 ...
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Noisy CPU Fan in Linux Mint
I have a Dell Inspiron laptop with Windows 8.1. The CPU fan is quiet when I use Windows. I installed Linux Mint with Cinnamon on another partition, but the fan is noisy all the time when I use Linux ...
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Is my laptop running slower than it could be?
I have a dual core CPU in my laptop. Supposedly it's supposed to be running at 2 Ghz.
When a dual core CPU is said to be running at 2 Ghz, does it mean that each of the cores should be cranking at ...
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How is CPU clock rate maintained?
I was reading an article Clock rate from wikipedia which has to say that:
The clock rate typically refers to the frequency that a CPU is running at.
The clock rate of a CPU is normally determined ...
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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) ...
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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 ...
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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 i5-...
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Why is current CPU frequency read-only for root?
I have a program that provides benchmarks, but its OS agnostic and does not know how to read CPU frequencies. The test program is driven through a script. If I provide the CPU frequency, then the ...
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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, ...
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How to fix CPU clock (for benchmarking purposes)?
How to make the CPU not change the speed (clock)?
I want to compare execution time of some programs and need constant CPU performance (not necessarily high performance).
The CPU in question is i7-...
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How to run the CPU at something like 75%?
My notebook is too old for me to invest into a new fan (it will simply be replaced by a new one when the final heat death occurs), but when it runs on full speed I feel like sitting in front of a ...
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Can I purposely slow a PC down?
I am testing a (non-online) game and I cannot react quickly enough to test the higher levels (I am 60 years old and not as quick as I once was...). Is there any way I can slow the CPU to 50% or even ...
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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 ...
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How to change PC clock speed for individual programs?
We have some older programs (no source code anymore) that run too fast on CPUs with faster clock speeds. I'm guessing that they were written using software delays ('X' number of CPU instructions per ...
CBruce
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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, ...
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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 ...
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Clock Speed and other factors
I hear almost everywhere that CPU clock speed is not the only factor that defines the true speed of a CPU. Well. What are the other factors then? In which case a processor clocked at 1.6 Ghz is faster ...
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Setting CPU Frequency on Amazon AWS
I've setup an EC2 Instance on AWS Amazon, and I'm trying to change the CPU speed of the cores by following these steps:
https://software.intel.com/sites/default/files/comment/1716807/how-to-change-...
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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 ...
user256743
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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 ...
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Usefulness of multi-core in the context of power-efficient computing
I'm considering options for a new portable PC. I'd like to keep power utilization at a minimum, while being able to run batch jobs as quickly as possible. Batch jobs I can generally parallelize ...
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Undervolting an AMD A8-4500M runnning Linux
I have a HP Pavilion g7 running elementary OS (based on Ubuntu) which is known to be loud and overheat.Mine doesn't shutdown but it does get loud which is very annoying (and 91°C with both Prime95 and ...
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CPU speed issue after upgrading to Windows 10
After upgrading from Windows 7 to Windows 10 I see a performance issue related to the CPU.
As you can see from the screenshot, the actual CPU speed is shown as 1.18 GHz instead of the 2.27GHz that is ...
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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, ...
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Performance and Battery Life
Okay, I'm looking for hard evidence to settle an argument.
From a developers perspective, the argument of CPU usage and battery life comes into play often.
If a CPU is throttled to use 10% of its ...
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