ddr2 vs ddr3

DDR2 VS DDR3 DDR2 (Double Data Rate 2) memory has been available for quite some time. New computers, even computers released within the last three years or so come equipped with DDR2 memory. An improvement over DDR memory, DDR2 produces faster performance with less energy consumption. With the way that DDR memory products are designed, none is backwards or forward compatible with the other. For example, if you have DDR memory,...

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linux tips and tricks

LINUX Tips and tricksSpeeding up your hard drive (#1)Get faster file transfer by using 32-bit transfers on your hard driveJust add the line:hdparm -c3 /dev/hdXto a bootup script.If you use SuSE or other distros based on SYS V,/sbin/init.d/boot.localshould work for you.This enables 32-bit transfer on your hard drive. On some systems it can improve transfer performance by 75%.To test your performance gain, type:hdparm -t -T /dev/hdXProtecting yourself from being a spam base(#2)Sendmail allows for someone to telnet to port 25 and do an expn...

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Siemens Mobile Secret Codes

Siemens Mobile Secret Codes:C25:SP unlock *#0003*(secret code 8 digits)#*#0606# shows you Secret Code, but only without SIM Card.*#06# for checking the IMEI (International Mobile Equipment Identity)Resets language to automatic selection : * # 0000 # then Green buttonPin Out (electrical connections)1- GND2- SB3- POWER4- NC5- TX6- RX7- CLOCK8- DATA9- GND MIC10- HF MIC11- AUDIO12- GND AUDIOLanguages:*#0000#+green phone - choose automaticaly*#0001#+green phone - English*#0030#+green phone - Greek*#0031#+green phone - Netherlands*#0032#+green...

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Virtual Memory Optimization

Virtual Memory Optimization GuideVirtual MemoryBack in the 'good old days' of command prompts and 1.2MB floppy disks, programs needed very little RAM to run because the main (and almost universal) operating system was Microsoft DOS and its memory footprint was small. That was truly fortunate because RAM at that time was horrendously expensive. Although it may seem ludicrous, 4MB of RAM was considered then to be an incredible amount of memory.However when Windows became more and more popular, 4MB was just not enough. Due to its GUI (Graphical...

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