[RC5] CPU temp

Dan Sugalski dan at sidhe.org
Fri Jan 5 10:28:37 EST 2001


At 02:37 PM 1/5/01 +0200, John Minkov wrote:
>Distributed.net client heats my CPU  with 3 - 4 C more than Seti at Home.
>How about yours ? and why ?

The dnet client does more work than the Seti at Home client, especially if 
you're running with the SETI graphics turned on. DNet's work is done pretty 
much completely inside the cache on the processor (it doesn't even get off 
the L1 cache on many CPUs) so there are very few times when the processor 
is waiting on other things. The Seti client, on the other hand, spends a 
lot of time waiting for the rest of the system, since it's pushing a lot of 
data to the graphics card, and the bus to the graphics system (no matter 
which one you're using) is slow and will tend to throw the processor into a 
lot of little wait states.

Also, the SETI client needs to hit main memory more, since it's crunching 
through a lot of data, and that's also slow, putting the CPU into a lot of 
little waits, which will also slow things down.

In this case, slow = cooler.

					Dan

--------------------------------------"it's like this"-------------------
Dan Sugalski                          even samurai
dan at sidhe.org                         have teddy bears and even
                                      teddy bears get drunk

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