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TDP Rating..

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Normandy
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PostPosted: Thu Feb 04, 2010 11:46 am    Post subject: TDP Rating.. Reply with quote
When a certain processor has a TDP rating of 65W, What does it mean? Is it the actual power consumption measured during full-load or is it the average power consumption irregardless of load? I've read a certain article at anandtech wherein a Core 2 Duo E4500 idled at 14W(EIST enabled) while it rated 36W during full load. Likewise, the Core 2 Duo E8500 idled at 18W(EIST enabled) while it consumes 43W during full load. Now, my question is: Why is it rated at 65W when the maximum power consumption during full load doesn't even reach 50W? Confused
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PostPosted: Thu Feb 04, 2010 12:35 pm    Post subject: Reply with quote
Because they need a margin for cpu architecture max power drain.

Power consumption acronims are really odd, there have been many and by manufacturer they changed in meaning.

Happy workd Smile
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gshv



Joined: 01 Feb 2003
Posts: 7898
Location: Fairfax, VA USA
PostPosted: Thu Feb 04, 2010 6:29 pm    Post subject: Re: TDP Rating.. Reply with quote
Normandy wrote:
When a certain processor has a TDP rating of 65W, What does it mean?

It means that your processor won't dissipate more than 65 Watt, and your fan/heatsink should be able to handle at least 65 Watt.

Quote:
I've read a certain article at anandtech wherein a Core 2 Duo E4500 idled at 14W(EIST enabled) while it rated 36W during full load. Likewise, the Core 2 Duo E8500 idled at 18W(EIST enabled) while it consumes 43W during full load. Now, my question is: Why is it rated at 65W when the maximum power consumption during full load doesn't even reach 50W? Confused

It's a guideline for thermal solutions. It's not an actual power dissipated by the CPU.

Gennadiy
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