Most important differences between an Intel Core i3, i5 and i7

 most important differences between an i3 and i5 processors:

1. Intel Turbo Boost is a technology that can be found on Intel® Core i5 & i7 processors only. It is important to mention that this feature helps the processor to increase its clock speed (provides a boost of power) when the system needs it in order to complete a specific task.


2. You can find the i3 processors with 2 cores and 4 threads. In the other hand, the i5 processors can be found with 4 cores and 4 threads.


3. Intel® Hyper Threading Technology is available on i3 & i7 processors only. This feature can be available on i5 processor for portable versions only (processor laptops). This feature uses processor resources more efficiently, enabling multiple threads to run on each core. As a performance feature, Intel HT Technology also increases processor throughput, improving overall performance on threaded software.


4. The higher the number, the better performance on processors. It mean that i5 will have better performance than i3 and i7 processors will also have better performance than i5 & i3 processors.

the difference between an Intel Core i3, i5 and i7 in terms of cores

The more cores there are, the more tasks (known as threads) can be served at the same time. The lowest number of cores can be found in Core i3 CPUs, i.e., which have only two cores. Currently, all Core i3s are dual-core processors.

Currently all Core i5 processors, except for the i5-661, are quad cores in Australia. The Core i5-661 is only a dual-core processor with a clockspeed of 3.33 GHz. Remember that all Core i3s are also dual cores. Furthermore, the i3-560 is also 3.33GHz, yet a lot cheaper. Sounds like it might be a better buy than the i5. What gives?

At this point, I'd like to grab the opportunity to illustrate how a number of factors affect the overall processing power of a CPU and determine whether it should be considered an i3, an i5, or an i7.

Even if the i5-661 normally runs at the same clockspeed as Core i3-560, and even if they all have the same number of cores, the i5-661 benefits from a technology known as Turbo Boost.

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Tech Buzz; What's the difference between an Intel Core i3, i5 and i7?

Core i3, Core i5, Core i7 — the difference in a nutshell

If you want a plain and simple answer, then generally speaking, Core i7s are better than Core i5s, which are in turn better than Core i3s. Nope, Core i7 does not have seven cores nor does Core i3 have three cores. The numbers are simply indicative of their relative processing powers.

Image credit: Intel.

Their relative levels of processing power are also signified by their Intel Processor Star Ratings, which are based on a collection of criteria involving their number of cores, clockspeed (in GHz), size of cache, as well as some new Intel technologies like Turbo Boost and Hyper-Threading.

Core i3s are rated with three stars, i5s have four stars, and i7s have five. If you're wondering why the ratings start with three, well they actually don't. The entry-level Intel CPUs — Celeron and Pentium — get one and two stars respectively.

Note: Core processors can be grouped in terms of their target devices, i.e., those for laptops and those for desktops. Each has its own specific characteristics/specs. To avoid confusion, we'll focus on the desktop variants. Note also that we'll be focusing on the 2nd Generation (Sandy Bridge) Core CPUs.


Tech Buzz: Microsoft sells over a million Xbox Ones in 24 hours, on par with Sony PlayStation 4

Microsoft sells over a million Xbox Ones in 24 hours, on par with Sony PlayStation 4

Microsoft Corp sold over 1 million of its new Xbox One game consoles within 24 hours of their hitting store shelves on Friday, on par with Sony Corp's PlayStation 4 despite launching in far more countries.

The new console, which launched in 13 countries, set a record for first-day Xbox sales and is currently sold out at most retailers, Microsoft said in a statement.

Sony said it sold 1 million PS4 units in 24 hours after launching last Friday in just the United States and Canada. The PS4 expands to other regions, including Europe, Australia and South America, from November 29. It then hits Japan in February.

Microsoft is locked in a console war with Sony this holiday season. The software giant hopes the Xbox One not only entices gamers but attracts a broader consumer base of TV fans and music lovers with its interactive entertainment features and media apps.

"We are working hard to create more Xbox One consoles," said Yusuf Mehdi, corporate vice president of marketing and strategy at Xbox.

Robert W. Baird & Co analyst Colin Sebastian has said he expects shipments of 2.5 million to 3 million units for both the Xbox One and PS4 in the fourth quarter.

Both the PS4, priced at $399 in the United States, and the Xbox One, with a price tag of $499, offer improved graphics for realistic effects, processors that allow faster game play and a slew of exclusive video games.

Technology NEWS: Xbox One gamers flock to London's West End for midnight launch

Xbox One: gamers flock to London's West End for midnight launch

Hordes of Xbox fans braved the cold and queued up outside a pop-up GAME store in London's Trocadero, to be one of the first to get their hands on the new console. Thousands more waited excitedly for midnight at 500 stores up and down the country.

Meanwhile, Leicester Square was transformed into a gaming universe, with zombies from Dead Rising 3 roaming the streets alongside Roman legions from Ryse: Son of Rome. The Stig drove through the crowds in a McLaren supercar from Forza Motorsport 5, while Premiership footballer Andros Townsend competed against fans on FIFA 14.

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tropes meaning

plural noun: tropes
a figurative or metaphorical use of a word or expression.
"both clothes and illness became tropes for new attitudes toward the self"

Tech Buzz: Create Wifi Hotspot in Ubuntu 12.4/12.10 for smart phones(android ) phones laptops

for video:

1. First of all you should make sure, that your wifi adapter supports infrastructure hotspots. If you used connectify on your windows system and it worked, skip this step.

open terminal and type: sudo lshw | less

find -network section and make sure that driver is ath5k or ath9k, this solution will only work for those drivers, but should fit the needs for the most laptop users.

2. We now need to install 2 additional tools to make out hotspot, 1st one is hostapd(hotspot server), 2nd one is dnsmasq(dns dhcp server)

in terminal type: sudo apt-get install hostapd dnsmasq

3. stop those services if started already, and prevent them from starting on system start up.

in terminal type:
sudo service hostapd stop
sudo service dnsmasq stop
sudo update-rc.d hostapd disable
sudo update-rc.d dnsmasq disable

4. Now we need to set up config files.
in terminal type: sudo gedit /etc/dnsmasq.conf
or sudo kate /etc/dnsmasq.conf if you use kde

add those lines to the config file

# Bind to only one interface
# Choose interface for binding
# Specify range of IP addresses for DHCP leasses

5. hostapd config

in terminal type: sudo gedit /etc/hostapd.conf

and add those lines


# Define interface
# Select driver
# Set access point name
# Set access point harware mode to 802.11g
# Set WIFI channel (can be easily changed)
# Enable WPA2 only (1 for WPA, 2 for WPA2, 3 for WPA + WPA2)

You can change ssid name and password for anything you want here. Current config will create hotspot named myhotspot with mypassword password.

6. Now create anywhere you want a file named
edit it with any text editor like this:


# Start
# Configure IP address for WLAN
sudo ifconfig wlan0
# Start DHCP/DNS server
sudo service dnsmasq restart
# Enable routing
sudo sysctl net.ipv4.ip_forward=1
# Enable NAT
sudo iptables -t nat -A POSTROUTING -o ppp0 -j MASQUERADE
# Run access point daemon
sudo hostapd /etc/hostapd.conf
# Stop
# Disable NAT
sudo iptables -D POSTROUTING -t nat -o ppp0 -j MASQUERADE
# Disable routing
sudo sysctl net.ipv4.ip_forward=0
# Disable DHCP/DNS server
sudo service dnsmasq stop
sudo service hostapd stop

You will probably need to change ppp0 in this to eth0 (or any other number which refers to your wired connection.

7. Last step. Now you can start your hotspot by starting our script. just run it using sudo sh
for me it looks like this sudo sh /home/ogyct/Desktop/ because I have it on my desktop

Tech Buzz: How to change Desktop Environments in Ubuntu 12.10

If you want to change Unity and install anything else (like KDE) in Ubuntu 12.10, then this article is for you. Just copy-paste the commands into your terminal, press enter … wait a little bit for the packages to download and you are ready. Logout, pick your favourite Desktop Environment and log back in.

It's insanely simple:

Install KDE

sudo apt-get install kde-standard  sudo apt-get install kde-full

Install GNOME 3

sudo add-apt-repository ppa:gnome3-team/gnome3  sudo apt-get update  sudo apt-get install gnome-shell

Install XFCE 4

sudo apt-get install xfce4  sudo apt-get install xfce4-goodies

Install Cinammon

sudo add-apt-repository ppa:gwendal-lebihan-dev/cinnamon-stable  sudo apt-get update  sudo apt-get install cinnamon

Install FluxBOX

sudo apt-get install fluxbox

Install E17

sudo apt-add-repository ppa:hannes-janetzek/enlightenment-svn  sudo apt-get update  sudo apt-get install e17