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I got my hands on a P4 EE 3.4 chip. I think I remember reading somewhere that the multiplyer is unlocked, is this true? I want to run the chip at 3.4 but at 1066fsb.
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P4 EE Multiplyer unlocked?
- Thread starter dave343
- Start date
chrisf6969
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nope, I had a 3.4EE (s478) no unlocking 
they didn't unlock them back on the old Gallatin (Xeon) chips, b/c they had a big advantage, the 2Mb of L3 (2Mb vs. 512kb)
Then the Prescott's advantage was a faster FSB. 1066 vs. standard 800
Now, they have to unlock the chips to give them more of an advantage since the 2 chips are identical now.
besides the obvious clock speed difference on them all. The XE is always at the top speed notch.
they didn't unlock them back on the old Gallatin (Xeon) chips, b/c they had a big advantage, the 2Mb of L3 (2Mb vs. 512kb)
Then the Prescott's advantage was a faster FSB. 1066 vs. standard 800
Now, they have to unlock the chips to give them more of an advantage since the 2 chips are identical now.
besides the obvious clock speed difference on them all. The XE is always at the top speed notch.
nope, I had a 3.4EE (s478) no unlocking
they didn't unlock them back on the old Gallatin (Xeon) chips, b/c they had a big advantage, the 2Mb of L3 (2Mb vs. 512kb)
Then the Prescott's advantage was a faster FSB. 1066 vs. standard 800
Now, they have to unlock the chips to give them more of an advantage since the 2 chips are identical now.
besides the obvious clock speed difference on them all. The XE is always at the top speed notch.
It depends on the model and type. The earliest Extreme Edition Pentium 4's were Gallatin core CPUs with 512k of L2 and an additional 2MB of L3 cache. It was essentially a Xeon in a socket 478 package with no SMP support.
Later Prescott core based Pentium 4 Extreme Editions offered only a 1066MHz FSB in contrast to their normal brethren. Later Pentium Extreme Edtiion CPUs based on the Presler core were multiplier unlocked and had the 1066Mhz FSB. They also featured Hyperthreading where standard Pentium D CPUs did not.
chrisf6969
[H]F Junkie
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So to sum it up for him
(yes or no for unlocked)
3.4 Gallatin XE = no, just extra 2Mb L2
3.46 Gallatin XE = no, just extra 2Mb L2 + 1066FSB
3.73 Prescott XE = no, just faster FSB
dual core 3.46/3.73 Presler XE = yes + Hyperthreading + 1066FSB
2.93 Conroe XE = yes
To me the XE isn't worth price now for just an unlocked multiplier.
It needs to be based on their server (Xeon) series with a larger cache. (like the Gallatin)
(yes or no for unlocked)
3.4 Gallatin XE = no, just extra 2Mb L2
3.46 Gallatin XE = no, just extra 2Mb L2 + 1066FSB
3.73 Prescott XE = no, just faster FSB
dual core 3.46/3.73 Presler XE = yes + Hyperthreading + 1066FSB
2.93 Conroe XE = yes
To me the XE isn't worth price now for just an unlocked multiplier.
It needs to be based on their server (Xeon) series with a larger cache. (like the Gallatin)
I agree. The Core 2 Extreme X6800 offers only a 200MHz bump in clock speed over the E6700 and an unlocked multiplier. Hardly worth the price jump of almost 50% just for those two things. In my mind the QX6700 is far more compelling, but still outside of the range I'm willing to pay at present for a CPU.