A friend asked if he can upgrade his current PIII 850 to a PIII 1.2 Ghz?
Since I built my dual 1000 I haven't really been following the PIII's. It appears there are now two different versions, the Tualatin at 1.13 and 1.26 and the non-Tualatin version at 1.13 and 1.20 Ghz. Is the non-Tualatin version intended as an upgrade for existing PIII 1Ghz and below motherboards? Does the new 1.2 require different voltage or socket (even though the pin count appears to be the same)?
its not the chips core to make it a different socket, there are few changes in the pin-array for the new core, thus you need few changes on the motherboard non-software related, this couldnt be solved from bios update, but a new mobo supporting it would probably work with both processors.
Actually, both of the 1.13 and 1.2's ARE Tualatin. There is a 256k L2 version and a 512k L2 version of each.
And yes, you need either a new motherboard or a 3rd party adapter (slocket).
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I am late in reading your post, but if you have not looked any deeper into the cost of the hardware for the 1.2G PIII, I think you will find any other processor a better bet. I have one and got it "very" cheep. While it is a nice processor and it's potential is good, it is an upgrade dead end, so ordered by Intel's market policy. You would be better off to invest in a new M/B and memory for a P4 or an AMD. Also, you can buy a new M/B and processor for what the 1.2G cost alone. Just my opinion, but then I own one.
Older Coppermine and Tualatin have different sockets. The Coppermine is FCPGA while the Tualatin is FCPGA2.
Although the number of pins on the socket is the same, they differ by placement of some signal pins. A processor socket definition is not just the physical socket, it is a complete specification of its physical, electrical and logical characteristics.
Currently Coppermine P-IIIs are available upto 1 GHz, and a 1.1 GHz version with 100 MHz FSB is also available. Tualatin is currently available in 1.13 and 1.2 GHz, and I expec to reach 1.5~1.6 GHz, with a higher FSB of 166 MHz!
Tualatin uses lower voltage than its predecessors, which was fine if it had to be used on older boards. But it also uses a new kind of clock signal, a differential clock that requires a new Southbridge, in effect a motherboard.
Most of the P-III chipsets now have Tualatin versions, but you do need a board upgrade anyway to support the Tualatin.
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