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I have some questions about upgrading an older motherboard.

Last response: in Motherboards
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January 24, 2013 6:21:15 PM

I have an HP DX2300 that I'm looking at upgrading. It seems to have a motherboard with an Intel 946GZ Express Chipset. The front side bus seems to run at 800 Mhz. My question is, could I install a CPU running at, say, 1066 Mhz? Wouldn't it just downthrottle the CPU? My main confusion comes from these 2 links. While searching about the chipset, I ran into this website showing which CPU's would work:

http://www.cpu-upgrade.com/mb-Intel_(chipsets)/946GZ_Express.html

Notice it only lists CPU's running up to 800 Mhz. Now, here's the second link, directly from HP's website:

http://h18000.www1.hp.com/products/quickspecs/12668_div... Features and Configurable Components

Notice how it lists a few Core 2 Duos running at 1066 Mhz? So, could I install a 1066 Mhz CPU into an 800 Mhz motherboard. If yes, what's the highest Mhz CPU that chipset could stand?

Thanks for your help :D 
January 24, 2013 6:29:05 PM

Well I ran the 946GZ chipset for like over a year with a Pentium D 3Ghz and a
Core 2 Duo e4700 2.6ghz, they both have bus speed of 800, as far as I'm aware 946GZ only supports up to an e4700 anyway, that's why I bought the processor


HP is probably full of ***, I think all core 2 duos supported on 946gz only go up to 800mhz

so basically, there is no 1066mhz CPUs supported on 946GZ, as far as I'm aware it just wont work at all because all the CPUs mentioned by intels specsheet only show 800mhz cpu


w/e basically, if you find a 1066mhz CPU, see if it's on the specsheet, if it's not, then no it wont work.
January 24, 2013 8:45:27 PM

iixwh3l4nxii said:
Well I ran the 946GZ chipset for like over a year with a Pentium D 3Ghz and a
Core 2 Duo e4700 2.6ghz, they both have bus speed of 800, as far as I'm aware 946GZ only supports up to an e4700 anyway, that's why I bought the processor


HP is probably full of ***, I think all core 2 duos supported on 946gz only go up to 800mhz

so basically, there is no 1066mhz CPUs supported on 946GZ, as far as I'm aware it just wont work at all because all the CPUs mentioned by intels specsheet only show 800mhz cpu


w/e basically, if you find a 1066mhz CPU, see if it's on the specsheet, if it's not, then no it wont work.


Thanks for the reply. I'll play it safe and get a Core 2 Duo E4700. Anything's better than the Celeron 420 it has now lol.
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