more speed and same heat! (athlons)

jpsa · Post by **jpsa** » Fri Apr 30, 2004 4:09 pm

This may seem obvious to some but to others not, thats why I'm writing this.

Imagine you get a mobile barton 2500+ cpu which works at winth 14x multiplier and 133Mhz bus (266) this gives you 14x133= 1866MHz.
Now, if you get a motherboard capable off 200MHz fsb (400) like a nforce2 or kt600, you can set your cpu to 9x200MHz=1800MHz or 9,5x200=1900MHz. In either case you'll get a great performance increase without messing with cpu speed itself. From a 266bus to a 400bus there's a nice performance boost

PiSan · Post by **PiSan** » Fri Apr 30, 2004 4:15 pm

Why wouldn't there be an increase in heat again? I was under the impression that the same factors which make a proccessor faster, also make it hotter. I could use some elaboration.

CallMeJoe · Post by **CallMeJoe** » Fri Apr 30, 2004 4:20 pm

You aren't speeding up the CPU itself by any significant factor; you're speeding up the data flow in and out of the CPU via the FSB increase, which gives your system a boost.

jpsa · Post by **jpsa** » Fri Apr 30, 2004 5:25 pm

cpu heat is basically made by MHz and voltage. I you keep these and change your bus speed from 266 to 400, in the case of a mobile cpu, your system will run faster because of increased bandwidth between cpu and northbridge. this will give you faster memory tranfers/access too. What you are doing is turning a 266Bus cpu to a 400 one, as simple as that.

Copper · Post by **Copper** » Sun May 02, 2004 10:19 am

You'd have the same CPU heat but more north bridge heat, which is probably easier to deal with but more heat just the same.

Edited to add: I think it would add more heat to the north bridge. I'm not positive though.

1911user · Post by **1911user** » Sun May 02, 2004 7:33 pm

Copper wrote:You'd have the same CPU heat but more north bridge heat, which is probably easier to deal with but more heat just the same.

Edited to add: I think it would add more heat to the north bridge. I'm not positive though.

The NB would work harder so it would dissipate more heat, but it shouldn't be a practical issue if the NB has adequate cooling. I run two Nforce2 rigs with passive zalman coolers on the NB and FSB speeds of 215-220MHz; no problems. I do have reasonable case airflow though.