Yes all computer parts are generally environmentally friendly.
That's correct, it will upgrade your video memory and not your system memory.
512kb memory footprint
512
512kb
yes ram can be mixed
Yes - over five times larger.
The official definition of gigabyte (GB) is 1000 megabytes (MB). The use of 1024 for memory is due to the use of binary addressing. Computers were originally structured with memory based up 8 or 64. So any larger memory will be a multiple of this. First floppy drive was 512KB. Double this and you have 1024. Then this continued up to the Gigabyte sizes. I know this is not a complete explanation but this is how the computer was made.
The E2140 has double the L2 cache of the E1200 but both CPU's run at 1.6GHz. E2140 = 1024Kb E1200 = 512Kb
512 kB=512.1024 bytes =524,288 bytes however,non-technical individuals round this off to 512,000 bytes.
It will depend on your download speed. If you have a 30mb/s download speed it will take 2 seconds. If you have a 512kb/s download speed it will take 2 minutes
Obviously new PCs are faster so if you use other PCs you may now find yours seeming slower. Assuming that you don't want to buy a new PC or that your current PC has a information that you would like to keep, your best option is to upgrade your memory from 512kB to at least 1gB. Do not upgrade your software to Windows Vista which requires even more memory.If you computer actually has gotten slower and doesn't just seem slower you probably have managed to collect a great deal of spy-ware. To resolve this you should download and run Ad-Aware from http:/www.lavasoft.com. Don't download anything that sounds similar - use only this web site. There are similar sounding products but they are mostly spy-ware themselves. Ad-Aware is free to home users. Another good program that you might consider is Spybot Search & Destroy which you can download from http:/www.safer-networking.org. Neither of them by themselves will remove all of your spy-ware but together they do a fine job.
AMD Athlon 64 X2 5600+ Brisbane 2.9GHz 2 x 512KB L2 Cache Socket AM2 65W Dual-Core Processor ADO5600IAA5DO - OEM Voltage 1.30 V/1.35 V