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Questions tagged [cpu-speed]

157 questions
188
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15 answers

Is the performance of a CPU affected as it ages?

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 clock cycles, latency of requests, etc on the used…
Ben Simpson
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11 answers

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 iMac is even older and is 2.5 GHz i5. Does this mean that the new…
DonnellyOverflow
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66
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4 answers

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 60 frames per second kind of fast, rather the…
TreyK
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7 answers

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 was like 1.8 GHz, then around 2003 having one that…
JD Isaacks
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7 answers

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 "without problems" to (let's say) 4GHz. But I can't…
java.is.for.desktop
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23
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10 answers

Why aren't all CPUs 'overclocked' as a factory default?

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.g. 2.67GHz processor and 'overclocking' it so that it ran at…
Matt Phillips
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20
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4 answers

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 software running on it "feels" slow, compared to the…
MiKy
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17
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6 answers

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 "greater cost per bit"? Here is what the…
Darien Springer
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11
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1 answer

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 them running slower or even are immobile?
Remi.b
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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?
open_sourse
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8
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8 answers

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 and keep fluctuating freely, with good utilisation…
GeassDragon
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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, if I change all the settings for Balanced to be…
user635127
7
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3 answers

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 cannot find any option to change back it to 28 even…
user1321466
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6
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8 answers

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 since 4 years, with this same 4 years-old laptop,…
Mouloud85
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6
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4 answers

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 game about twice as fast as hers. We both have…
Nick Rolando
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