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Before installing your Heatsink and Fan to the processor you should be applying Thermal Paste. There are several hundred versions on the market and any good computer store will have ooddles of the stuff. Ideally don't spend less that €10 on a tube. If its cheaper than €10 its generally useless. In some case, some of the more expensive thermal pastes contain an adhesive to ensure the heatsink sits better on the processor.
When installing a hot water tank, some safety hazards include being shocked by electricity when dealing with the wiring. There are generally no other serious safety concerns. It may be a good idea to get a professional instead of installing it by yourself for the first time.
Some used a simple passive heatsink, or used parts of the computer's case itself to dissipate heat. Other required no heatsink at all.
Some word processor support macros, some does not.
Inside the computer, you will find a fan and heatsink assembly clamped on or screwed down. Indeed there may be many of these, but the largest one on your motherboard is most likely the CPU cooler. Under that heatsink is your CPU. Note: If you plan to open up your computer & find the CPU bear a few things in mind. 1. Never open up a computer that's plugged in. 2. Be very careful when removing the CPU heatsink, some clips are very tempermental and you may damage the heatsink CPU or motherboard if you slip.
There are definitely concerns; how valid these concerns are is a matter of some debate.
In a active heatsink system you have both a heatsink and a fan thus for the most part an active heatsink cools better with one exception. Should the fan fail the active heatsink will quickly overheat. Passive heatsinks relay on transferring heat without the aid of a fan. The advantage here is that a passive heatsink is fail proof and uses 0 electricity, however passive heatsinks don't typical cool as well. Passive heatsinks work great for supporting chips and RAM cooling. They are also found in servers because of the no fail aspect. EnzoTech produces some passive heatsinks you can read a bit more about them here: http://electricalninja.com/
There are alot of safety concerns when using a hang glider. There are concerns with thermal and wind currents, which can not be helped. Theses concerns has resulted in fatal accidents.
L2 cache. Today's processors all have some memory on the processor chip (called a die). Memory on the processor die is called Level 1 cache (L1 cache). Memory in the processor package, but not on the processor die, is called Level 2 cache (L2 cache). Some processors use a third cache farther from the processor core, but still in the processor package, which is called Level 3 cache (L3 cache).
Generally, the bit size of a processor is indicated by the size of the accumulator, which is, most times but not always, the same as the internal data bus size. The 8086/8088 processor, for instance, is a 16 bit processor. The 8085 is an 8 bit processor. The 80386 is a 32 bit processor. The Q6600 Core2 Quad is a 64 bit processor. (These are just examples.)
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Most motherboards are the same in this regard. Your CPU should be less than 2" away from the back panel of your motherboard (Where your keyboard, mouse, USB devices, etc plug into) inside of your case. It will be covered by a heatsink (Metal fins, square aluminium box with fins, etc) and usually a fan. This shouldn't be removed unless you have thermal grease to reapply to your CPU, or if you're removing the CPU permanently.