If you buy a retail boxed processor, yes. You do get a heatsink fan (HSF) with the processor.
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To sink the heat.
A heat sink works on the principle of thermal transfer. The heat sink transfers heat from the chip to the air, wicking heat away.
Yes! Water is a heat sink.
Probably because it draws/absorbs the heat making the heat "sink" into it
heat sink is when heat is absorbed into any type of environment, including the aquatic ecosystem; and carbon sink is when CO2 is absorbed into any type of environment including the terrestrial ecosystem.
If you have a compatible motherboard then this will work. But I highly doubt it will be compatible. the problem with replacing the core 2 duo with the newer i5 is the size and pin difference, the core 2 duo is simply smaller than the i5, you would have to buy a new mother board, which in most cases it would be cheaper to just buy a new laptop with the i5 or i7 in it.
makes the heat sink
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the difference between i5-6xx (Dual Core) and the i5-7xx (Quad Core) is that the Dual Cores have a integrated GPU clocked at about 733MHz, however the Quad Cores are extremely fast and the i5-760 can even outrun some of the i7s! also the dual cores have half the L3 Cache as the Quads. Unless u really do not want to buy a GPU i would go for a i5 Quad as the i5-750 is only £8 more expensive than the cheapest Dual.
Quite simple find out what socket your previous cpu is, buy one that fits your motherboard. To install, remove fan/heat sink. Then remove old cpu, replace it and apply thermal grease, put the fan/heat sink in position and its done.
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