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Home Computer Security

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No matter how a home computer is connected to the Internet, intruder’s attacks are often successful. Many home computer owners don’t realize that they need to pay attention to computer security. In the same way that you are responsible for having insurance when you drive a car, you need to also be responsible for your home computer’s security.

Here are some tips to protect your computer:

1. Keep your firewall turned on

A firewall is a device or set of devices configured to permit, deny, encrypt, or proxy all computer traffic between different security domains based upon a set of rules and other criteria. It helps protect your computer from hackers who might try to delete information, crash your computer, or even steal your passwords or credit card numbers. Make sure your firewall is always turned on.

There are three basic types of firewalls are available for you to choose from:
• Software firewalls
• Hardware routers
• Wireless routers

To determine which type of firewall is best for you, answer these questions and record your answers:

a. How many computers will use the firewall?

b. What operating system do you use? (This might be a version of Microsoft Windows, Apple Macintosh, or Linux.)

If you use Windows Vista or Windows XP Service Pack 2 (SP2), you have a firewall built in and turned on by default.

2. Keep your operating system up-to-date

High priority updates are critical to the security and reliability of your computer. They offer the latest protection against malicious online activities. Microsoft provides new updates, as necessary, on the second Tuesday of the month.

Operating systems, like Windows XP and Macintosh OS X, are made up of countless parts with different functions ideally working in harmony. That some of these parts should be less than perfect is inevitable. But when a problem leaves a hole in your machine’s defenses, it is extremely important to patch it as soon as possible. This is best accomplished by using built-in automatic update features through the Windows Security Center in Windows XP, Automatic Updates control panel in earlier versions of Windows, and the Software Update application in Macintosh OS X under System Properties. Keep in mind that your machine may need to be restarted after you update.

3. Use updated antivirus software

Viruses and spyware are two kinds of usually malicious software that you need to protect your computer against. You need antivirus technology to help prevent viruses, and you need to keep it regularly updated.

There are many Anti-Virus softeware to choose from. I use AVG Anti Virus 8, because it is easy to use, effective, and always updated. AVG Checks for updates every 4 hours by default. AVG Antivirus is one of the most complete programs we have found to date. It includes many new options to make it one of the most effective virus scanners on the market. It is still plagued by horrible slowdowns at times. Even things so simple as just typing an IM can be stopped for several seconds for some reason. If you can get past the occasional slowdowns of your computer, the scanning functionality of AVG Antivirus 8 is top of the line. With the rewrite of the scanning engine, AVG included multi processor support. That dual core processor you bought is actually going to start getting a workout now. AVG also included support for Windows Vista and the 64 bit versions of Windows XP and Vista.

4. Use updated antispyware technology

Antispyware helps protect your computer against pop-ups, slow performance, and security threats caused by spyware and other unwanted software. To keep up with the latest forms of spyware, you must keep your antispyware updated.

• Software that displays pop-up advertising on your computer, collects and relays your personal information, or changes the configuration of your computer, without appropriately obtaining your consent first, is called spyware.
• Many kinds of unwanted software, including spyware, are designed to be difficult to remove. If you try to uninstall this software like any other program, you might find that the program reappears as soon as you restart your computer.
• Windows Defender is designed to protect you against spyware. It features a monitoring system that recommends actions against spyware when it’s detected and minimizes interruptions.


Jun 16, 2008

New LCD Monitor

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I have a new LCD monitor.. From 17 inches AOC to 22 inches ASUS VK222U.. I’m so happy. We bought it for P14,000 only…




At first I like the Samsung 2232GW, obviously because it looks good and the Specs are good.

Samsung 2232GW 22″ Widescreen LCD Monitor

Display performance: Whether you’re creating a masterpiece or just watching one on DVD, the wide 16:10 aspect ratio and 1680 x 1050 (WSXGA+) resolution deliver a better view. This 22” widescreen LCD display also features an exceptional 3000:1 contrast ratio that brings out fine detail.
External Image

Clear images: MagicClear™ coating eliminates distortion and glare by reflecting light to reveal crystal clear images.

Easily adjustable: MagicColor™ and MagicBright 3™ technologies yield rich, natural color and easily selectable brightness modes that include Text, Internet, Game, Sports, Movie and Print view.

Smooth, clear video: MagicSpeed™ technology delivers blazing-fast, 2-millisecond response times. Fast pixel response means fast action with virtually no blurring or ghosting—perfect for motion graphics editing.

Smart design: MagicTune™ technology lets you make monitor adjustments via the mouse, so you can enjoy a cleaner, sleeker monitor design with fewer buttons.

PRICE: Php 16,500

But Asus VK222U is better……

Asus VK222U Widescreen 22″ LCD Monitor

Instant Video Communication Bridges You to the Rest of the World

Real-time Video Communication
Built-in 1.3M pixel webcam is easy for popular instant messaging applications on 22 widescreen.
Good image quality in comparison to that of the most consumer stand-alone web-cameras.
Plug-and-play for easy connection and easy use through the USB interface without installing extra drivers.
Create your own video clip and side show by bundled LifeFrame2 software.

ASCR(ASUS Smart Contrast Ratio) 5000:1
Provides the high contrast ratio of 5000:1, which can dynamically adjust contrast between black and white to provide sharper and brighter images – especially during games and movies.

Trace Free Technology
Delivers 2ms (GTG) extremely quick response time for smoother video display and results in no image delay and ghosting during speedy games.

Excellent Visual Performance
The 16:10 golden ratio 22 widescreen for viewing comfort.
Fit two A4 size pages on screen to help double working efficiency
Wide viewing angles make the VK222U perfect for viewing high-quality DVD images.
16.7 million display colors deliver rich and colorful images.
Dual Inputs of D-sub and DVI with HDCP Supported
Certified for Windows Vista Premium.

Display 4:3 Contents Perfectly on Widescreen
Aspect control function enables 4:3 contents without image distortion on the widescreen.

Intelligent Image Enhancement
Splendid Video Intelligence Technology fine tunes the color, brightness, contrast and sharpness of images in different video applications and offers 5 preset video modes selection via hotkey and 3 skin tone options, providing video quality comparable to the best TVs.

PRICE: Php 14,000

With ASUS VK222U specs and price, it is worth the buy. Definitely recommended LCD.

Filed under Computers, Personal
May 25, 2008

Make Your Pc Faster

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Warning: some of the tips involve changing your Registry, use them at your own risk. Your PC may not start if you muck up the registry so you should always backup your registry.

  1. Run a scandisk or checkdisk. Let Windows fix any errors.
  2. Run a disk cleanup utility. This will flush your temporary internet folder, trash can, temp system files, etc.
  3. Delete any garbage files or data, if possible, run a Duplicate File Finder program.
  4. Run Defrag on all partitions (NOTE: run this after you have deleted all trash and excess files!)
  5. Run a registry cleaner utility and delete or get rid of any orphaned entries in that registry.
  6. Check your exisiting swap file for it’s size and location (*will explain location later in the post). If you have alot of ram (i.e. 1 gig and over) set this swap file to something small, like 250 mb. The reason is that this will force Windows to load more into memory, resulting in faster performance (note: some games and applications actually require a certain sized swap file so check your applications performance after making a size adjustment for any error messages.)
  7. Under XP, you can tell Windows to use Classic Style on your desktop, – this will remove the neat single click and internet-style desktop but for lower end systems this will improve performance in other areas, such as gaming and multi-tasking.
  8. Run msconfig and under startup and only keep the programs that are essential to load in the tray icon (and hence stay resident in memory). Uncheck anything else non-essential, like an ATI or Nvidia control panel, Quicktime utility, Real Audio, etc.
  9. Upgrade drivers! Check for the latest BIOS, video, motherboard, sound, etc drivers from the manufacturers. Alot of my friends had chipsets on their motherboard that had advanced disk management capabilities or AGP port settings but the drivers weren’t loaded for them so they were never being used. A simple upgrade realized a noticeable difference. For instance, they didn’t have the latest driver for their AGP port so it was set to 1x, instead of being used at 4x!
  10. (OK, so this won’t speed up your PC but it could save you alot of time and trouble later on!) After making all these improvements, make a working backup! I use Ghost, but for XP users you can also use System Restore…

FOR ADVANCED USERS :

  1. Take a look under the hood (for IDE owners). How are your IDE devices configured? If you have more than 1 hard drive, put the master hard drive on the primary IDE channel and the secondary hard drive on the secondary IDE channel (most motherboards have two IDE channels).
  2. Place all CDROM drives, DVD readers etc. on the secondary IDE channel (or SCSI bus, etc). This will reduce I/O contention with your master hard drive which should have your OS and apps installed…
  3. Remember when I mentioned the location of the swap file? OK, if you have 2 hard drives and you have one on the primary IDE channel and the other on the secondary IDE channel, move the swap file to a partition ON THE SECOND hard drive (on the secondary IDE channel). This will greatly improve system performance as the PC can write to the swap file while loading and running OS and system commands without I/O contention on the primary IDE channel!
  4. Take a look under the hood (for SCSI owners) What kind of SCSI do you have? If it’s the newer Ultra 160/320 etc cards then guess what? Any devices placed on the same bus will automatically default to the slowest drive on the chain…this means that if you have say, an Ultra 160 SCSI card, and it has an Ultra 160 drive (capable of transferring 160 mb/sec) on the same chain as a SCSI cdrom drive (capable of only 40 mb/sec) then the whole bus slows down to the 40 mb/sec speed…use different chains for the slower devices and maximize those hard drives!
  5. Run a utility like WCPUID and check the settings…is your CPU/front speed bus/AGP port running as fast as they should be? If not, check your drivers and BIOS configuration options. Also, are all of your chipset features enabled? If not, then enable them! (usually done in your BIOS!)
  6. Dig in to the BIOS…check settings like boot order, for example…is it checking the floppy first? Change this! Select your order to reflect the hard drive first, then CD, then floppy for a noticeable boot time improvement. Also disable any non-used on board peripherals…for instance, – does your motherboard come with an on-board NIC card? Guess what, if you don’t use that NIC card and it is enabled it will eat up valuable CPU cycles and can be detrimental to your systems’ performance. DISABLE THAT MUTHA! Also, see if you can play with memory timing and CPU clock frequencies (NOTE! This is for expert users only!) Set these timings to “Aggressive” and see what happens in your games and apps…Also, check to see what your video aperature is set to. If you have a video card with 128 megs of on-board memory, your aperture should be set to this amount too. Read the BIOS owner manual for further non-general performance tricks or improvements! Do you have the latest BIOS firmware version?
  7. Under hardware properties, check to see that everything is working properly, and fix any hardware contention issues. You’ll see the dreaded yellow exclamation point (!) beside any hardware component that is not working correctly.
  8. Evaluate the potential for system/hardware upgrades…usually, the best bang for the buck is adding memory so buy all that you can afford (don’t go much above 512 megs for Win 98 or ME). If you have a motherboard with an 8x – capable AGP port but you are using an older 4x video card, consider upgrading to an 8x card. You get the idea here…
  9. Quit using software pigs like Norton system utilities, etc. These place files everywhere and can be a real system resource hog on lower end PCs.
  10. Did I mention to make a good backup? Do it now! Also, while you’re at it, run a good virus program with the latest definitions.
Filed under Computers
May 10, 2008

Overclocking Tutorial

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Overclocking takes on 3 forms:
First, is the casual overclocking, easy, and anyone can do it.
Second, is the right way to overclock, taking into account, everything.
Third, if you want serious power, your gonna need to be savvy to what does what.

The casual overclocker gains about 5% increase, and really doesn’t see any benefit from this, whilst it makes you feel good, no serious damage can be made, by upping the FSB a little, or changing your multiplier, only thing is, you want more.

The correct way to overclock, is to start looking at your system, check the motherboard specs, PSU, amount of hard drives, CD ROMS etc. (high end systems, including the latest graphic cards will need serious power).

Lets take a base system like my old system setup:

AMD XP1700+ ( Thoroughbred JIUHB DLT3C )
Core Voltage = 1.50v
Maximum Die Temp = 90c
FSB = 266Mhz
(factory unlocked)

Jetway K266B KT266 chipset
DDR + SDR RAM (not together)
No onboard RAID

DDR RAM = Dane Elec PC2700 DDR (333Mhz)
Not registered

2 Hard drives
1 CD Writer & 1 DVD ROM drive

2 LAN cards

1 PCI soundcard
(onboard sound turned off).

Now, lets look at what they can do:
The Thoroughbred is still the top processor for overclocking, Thunderbirds are just not up to it, even though they are capable of some really decent speeds, same as the Palamino, not to mention the Barton’s (these are not what they have been made up to be).
(for the purpose of space, I’ll not go into unlocking your CPU)

As you can see, my Thoroughbred has a core voltage of 1.5v, and as my motherboard is capable of giving my processor anything upto 1.85v, there is score for more there.
The FSB on my motherboard is capable of a max of 200Mhz (this is the magic number).
Die temps to a max of 90c is good (never been near it, yet!).

Now, to work out your Mhz on your system, or to check your multiplier or FSB, there is a little calculation you’ll need to remember, and it’s easy:

Your Mhz is worked out by your multiplier timed your FSB.
example:

CODE
133×10 = 1.33Ghz

Of course you can divide your Mhz with your known FSB to give you your multiplier etc.

Now for easy, I have the results of my previous unlocking tests handy, so I’ll use them, and not the current speeds etc.

Standard Multiplier = 11.0
Overclocked Multiplier = 12.0

Standard Voltage = 1.50v
Overclocked Voltage = 1.52v

Standard FSB = 133Mhz
Overclocked FSB = 136Mhz

Standard Speed = 1467Mhz
Overclocked Speed = 1630Mhz

Standard Temps = CPU = 37c SYSTEM = 32c (idle) CPU = 44c SYSTEM = 36c (under load)
Overclocked Temps = CPU = 34c SYSTEM = 29c (idle) CPU 40c SYSTEM 34c (under load)

As you can see, the system is cooler when overclocked, this is due to having the correct cooling setup, and temps for it when it was standard, was standard cooling setup.

Basically, all I have done, is raised the FSB by 3mhz, the voltage by 0.02v and the multiplier by 1.0, this has given me a 163Mhz increase without over stressing my system, but, here is where it gets tedious:

To achieve this, it took me about a week, and this is how I did it:
I started by lowering the multiplier to 5.0, from there I raised the FSB to its max (at the time, have latest BIOS update for mobo, allowing 200Mhz FSB), 166Mhz, this is the correct way of overclocking.
From there, I started to raise the multiplier one by one, getting it back upto the standard multiplier or higher, checking the stability of the system each time.
(currently I am way passed the 136Mhz FSB, as I am running PC2700 DDR).

One thing to look at though, overclocking using the FSB WILL (unless your system allows you to specify it) mess with your PCI & RAM speeds.
Even raising it by 3Mhz can make your PCI cards to not work, and your RAM to get confused and crash your system.

Now your thinking to yourself ‘I can do that’ and yes you can, anyone can, but…….
It takes TIME, I can’t stress that enough, if your going to try this, then you’ll need to run your system for at least 6 hours between changing your multiplier, and as you can imagine, this can take a long time to do.

For your information, I used Hot CPU Tester, SETI & played Vietcong for testing purposes.

Now, for the hard part:

As most experienced overclockers will tell you, heat is your enemy, killing heat is your number 1 aim, don’t worry about your speed at first, a 50Mhz increase isn’t gonna make your 3D Mark scream through the roof, actually, you’ll probably not even get any better than what you did before.

There are several ways of dispersing heat, and they are:

Air cooling:
Pro’s: Cheap, effective at lower speeds.
Con’s: Noisy, dust collectors, need maintenance.

Water cooling:
Pro’s: Can lower your CPU by about 10c easily.
Con’s:
I

t has water in it, expensive, hard for some to understand.

Pelter:
Pro’s: With water cooling, it’s the daddy
Con’s: ONLY EXPERIENCED PEOPLE NEED TO APPLY, very complicated, power hungry, NOT for the faint hearted. Stupidly expensive.

Air cooling:
Upgrading your CPU fan is the first step, there are several companies that offer aftermarket fans, which are better than the OEM fans are 2 a penny in todays world, but it’s NOT just about your CPU fan, your system needs to breath, you need to get rid of ‘hot spots’ within your system.

Water cooling:
Its easier than most make out, its a good thing, kit prices can be got from about £120 ($200 US), just make sure they are upgradable, as you might want to add, a Northbridge water block & a GPU water block.
Modern day kits & parts are idiot proof, and will not leak, unless you act like Noah.

Pelter:
Pelter cooling is DANGEROUS, mainly for your system, fitting it incorrectly, and you could end up with not only a baked CPU but a system that will end up as a very expensive paperweight.
Ask your local overclocking expert for more info.

Basically, if you can get hold of a decent Thoroughbred cored XP, your in luck (just like me), if its unlocked, then your in business, obviously, its not just down to your CPU, your motherboard and RAM will denote whether you can overclock big style or not.
I’d advise ANYONE thinking of overclocking, to research into it more, weigh up the odds on what they want or need, if your on a buget, DON’T attempt it, things can and do go wrong.
Most of the time, its not about ‘mines faster than yours’ or massive speed increases, its done by most, cause it can be. 90% of the time, you’d be better off buying a new CPU (as prices are so low), but if you get the urge, then a new world awaits you great tutorial. this should help the OC noobs. If I can add something like you said know your specs of the mobo….and if you are serious about OC’ing dont go and get some generic NO-NAME ram and some ghetto mobo. to get the best stability go with ASUS and ABIT for the mobo and Crucial, Kingston, mushkin for the ram. A great forum for OC’ing is amdmb.com.

Indeed, if you are serious about your overclocking, its advised you only use serious brand names.
Generic parts are always a lower spec, and can easily destroy themselves with even a little stress aimed towards them.

Memory advice, use the following:

Kingston (added because of reviews, personally, I’m not sure about them).
Crucial (for Dual Channel DDR ONLY)
OCZ
Mushkin
Corsair
PNY (for EEC rated)
Samsung
Geil (my choice, when I can afford it)

Motherbord advice, use the following:

Asus A7N8X Deluxe nForce2
Asus A7N8X-VM nForce2
Asus A7N8X-X nForce2
Abit KD7-S KT400
Abit KV7 KT600
Abit NF7 v2.0 nForce2
Abit NF7-S v2.0 nForce2
MSI K7N2 Delta-L Nforce2
MSI KT6 Delta-LSR KT600
Epox 8RDA+ nForce2
Epox 8RGA+ nForce2

Any nForce2 motherboard would be best, they allow more score for overclocking your system.

Filed under Computers
May 10, 2008