In modern personal computer, the CPU speed is measured in?
Ghz. (gigahertz) - it's the number of calculations the CPU can do per second (a 2 Ghz CPU can do 2 million calculations per second, although that depends on a number of things - a dual core 2 Ghz CPU could do 4 million calculations per second if the programming is optimised for it (dual core is called that because it has 2 cores - a quad core could do 4 times the speed if the program is optimised to use all 4 cores), and some CPU's have advanced interrupts built in that allow them cheat and do even more calculations, however that depends on whether the program was optimised to make use of those extra interrupts (this is why AMD CPU's tend to be measured at a + speed - e.g AMD 2200+ - is 2.2Ghz but the + means that if the program is optomised for the CPU it "might" do faster than 2.2Ghz).
Is a computer's single core speed equal to the total speed divided by the number of cores?
Each core runs at the ‘total’ speed. So a 4-core CPU at 2.3 GHz has 4 cores that can all run together at that speed. These cores handle independent tasks, but share the same memory and cache. This means a 4x2.3GHz is not identical to a 1x9.2GHz processor for example. Heat restrictions have limited the clock speeds we can achieve, and therefore the currend trend goes to more cores.Certainly in mobile devices, this isn’t always done to conserve energy. When simple tasks require only one or two cores, the rest of the cores get clocked down to a lot lower speed. Also when CPUs feature boost speeds, this usually applies only to a few cores.Finally: a quick search for 2.3GHz 6th generation leads me to the i5–6200U, which is a laptop processor with only 2 cores but 4 threads. This means that with some witty hardware improvements, each core can handle two threads (tasks) as if it were two cores. This does not give equal performance to a true 4core processor, but definitely outperforms a “regular” 2core.
What is the difference between Raspberry Pi and a normal computer?
A Raspberry Pi is a small low powered computer. It has an ARM processor that can run a Linux desktop operating system. If Microsoft wanted they could release a Windows desktop operating system for the Raspberry Pi. Microsoft has already released an Internet of Things version of Windows 10 for the Raspberry Pi.If you look at the Raspberry Pi 3 it has:4 USB ports for keyboard, mouse and other USB devices1 HDMI port to hook up to a monitor1 Audio headphone port1 Ethernet portWiFiBluetoothIf you look at a standard desktop computer it has:4 or more USB ports for keyboard, mouse and other USB devices1 or 2 HDMI ports1 Audio headphone port1 Audio line out port1 Audio microphone port1 or 2 Ethernet portsWiFiBluetoothSATA hard drive portsSD Card portSo the differences would be:Audio line out portAudio microphone portSATA hard drive portsSD Card portI don’t include the micro SD card on the Raspberry Pi since it has to use that for the operating system.Probably the two biggest barriers to the Raspberry Pi being used as a desktop replacement are the lack of SATA hard drive support and the slower/lower power processor.
What is computer speed dependant upon?
from your speedtest i'm guessing your asking about your internet speed or network speed rather than processing power of a computer. what determins your internet speed: firstly the package you are on, when you sign up for internet, you will be told that you could get 'up to' a certain speed. if for example you are on a package stating 'upto 10mb' this will then depend on which method you are connecting to the internet. normal broadband through a phone line will depend on how far you are from the phone exchange, you can expect to get between 4mb and 5mb download speeds. on a fiber optic connection you will get close to the max 10mb that you have signed up for. When you download and your on a high speed connection say 10mb on a fiber optic connection, the wording is very important, '12mb' is the same as 1Mbps, so when you download the value is just written diffrently (the capital letters are what make the speed the same) if you have a much higher speed connection say 100mbps, this is when your wiring and cables may effect the top speed you are going to get, too many conenctors and a poor quality network cable, or a long network cable that is not sheilded (it will pick up interference) will lower your speed. Fair Usage Policy can also determin your download speeds, depending on the ISP you are signed up with their fair usage policy may throttle your connection back if you download too much in a day, or use P2P software.
Does the speed of computers increase if I increase the RAM from 4GB to 8GB?
Answer is obviously YES.When we say speed of computer, we actually refer to speed of the softwares that we run on a computer.Let us suppose , you run a software that would need 2 GB RAM for memory virtualization, then, it will run with same speed on 4 GB RAM or 8 GB RAM or any thing more than that.If you are using a software that require 5 GB RAM for memory virtualization, then, it will obviously run faster on CPU with 8 GB RAM than 4 GB RAM.But, generally, if you are not a programmer and do not use any heavy softwares, you may not see any difference in speed between 8 GB or 4 GB CPU's.But, the advantage of extending your ram is that, you can run multiple softwares simultaneously, seamlessly.Thank you.
How is computer memory measured?
The basic unit of measure for memory size is the bit. A bit is either a 0 or a 1. You rarely work with individual bits.In most systems, 8 bit’s make a byte. A byte contains enough 0’s and 1’s to store a single ASCII character such as an ‘A’.1 Megabyte (MB) is 1,048,576 bytes (1024^2 bytes). 1 MB holds enough 0’s and 1’s to store a medium length word processing document, or all the ASCII for a medium length novel, or a picture in low definition.1 Gigabyte (GB) is 1,073,741,824 bytes (1024^3 bytes). 1 GB holds enough 0’s and 1’s that it can hold all the ASCII of all the books in a large library, or about 300 high definition pictures.Computers use numbers that are base 2 and we are used to seeing numbers as base 10. This makes the numbers seem strange to us, but very useful and easy to work with for computers. So all the numbers above are 2 raised to some power.The basic unit of measurement for memory speed is MHz (1,000,000 Hz). It is the data transfer rate.The basic unit of measurement for latency is CAS or CL. It is how fast RAM can access the memory.
What is today's average computer processing speed?
If you really want your computer or laptop works well then yes processor speed majorly matters.Computer processor speed is the speed of clock which refers to the number of pulses per second (or megahertZ) generated by an oscillator that sets the tempo for the processor. In simple words, Clock speed is the rate at which your computer or CPU executes the task and measured in gigahertz.Computer’s overall performance is depended on processor speed. Your computer will be much faster and more powerful when it is capable of executing more work every second or in lesser time.I know I took more time to answer your question but this information really matters to understand how processor speed matters to function computer.Average Desktop Processor speed is 1.5 to 2.5 GHzAverage Laptop Processor Speed is 1.0 GHzI hope this answer helps you.Visit my blog for interesting articles here-Eureka Of LifeThank You, Guys!
Why does my computer have 2 Ghz numbers?
There have been some misleading and incorrect responses here (not all) so I thought I'd clear things up. Captain is right, you do have a dual core processor. Hence the reason why you see two speeds (GHz). To put it simply dual core processors are almost like two processors in one, they are divided into cores with their own individual clock speeds. However Captain is very wrong in saying that you can simply add these speeds together to obtain an overall speed. Computer programs these days have to be optimised to actually utilise dual core. So while your Windows operating system will benefit (and it will benefit hugely) from dual core, other programs may not. So if you're after similar processing power or higher I would look for anything with a Core 2 Duo/Quad Core processor. Just don't blow too much money on it. Shops today are trying to get you to sped hundreds of pounds more on laptops with 4GB of RAM which you would never even use. I am a heavy gamer and my Desktop has never ever gone over 2.5GB. If you want to drop me a personal message for more advice please feel free to do so : ) EDIT: Oh and houses of the holy is right. If your laptop was plugged in and its power settings were set to 'high performance' then both of your cores would have a clock speed of 1.8Ghz