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Intel Pentium D 900 Series and Engineering Sample

post #1 of 6
Thread Starter 
Hi,

Does all the consumer Pentium D has unlocked multiplier or the Engineering Sample and Extreme Edition only.

I mainly need to know which one to get for better overclocking purpose.

thanks
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post #2 of 6
You can lower the multiplier on normal Pentium D CPU's, but you cannot raise it. This depends on whether your motherboard supports adjusting multipliers as well.
post #3 of 6
Only ES and EE Penty D's have unlocked multipliers.
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post #4 of 6
Quote:
Originally Posted by t4ct1c47 View Post
You can lower the multiplier on normal Pentium D CPU's, but you cannot raise it. This depends on whether your motherboard supports adjusting multipliers as well.
Not entirely true. If the CPU supports EIST (speed step) you are down unlocked. The D820/920 with no speed step has a 14x up and down locked multi. I think that the D830/D930 and up have speed step.
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post #5 of 6
Well, that isn't all entirely true. The Gigabyte 965p-DS3 (later bios) allowed you to access the multiplier on the Pentium D 920. You could set it at 12-13-or-14. Those were the multipliers that were available from EIST and they fudged the bios to give you access to them. Normally they would be locked.

I have no idea how many other motherboards or bios have that ability for the 900 series cpu, but that one did.

Like I said it was a later version of bios.
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post #6 of 6
Quote:
Originally Posted by jph1589 View Post
Well, that isn't all entirely true. The Gigabyte 965p-DS3 (later bios) allowed you to access the multiplier on the Pentium D 920. You could set it at 12-13-or-14. Those were the multipliers that were available from EIST and they fudged the bios to give you access to them. Normally they would be locked.

I have no idea how many other motherboards or bios have that ability for the 900 series cpu, but that one did.

Like I said it was a later version of bios.
Wow....learn something new every day.
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