Which cpu have unlocked ?

[bulldog147]

Sorry to ask you this silly question. Which intel cpu i3, i5 or i7 does have unlocked multiplier as many motherboard cannot gone pass x21 (with turbo on)

 

[RJC]

As far as I am aware only this one has a unlocked multiplier.
As like you mention most only use the turbo option to increase the multiplier.

 

[bulldog147]

What about this one? http://www.overclockers.co.uk/showproduct.php?prodid=CP-287-IN&groupid=701&catid=6&subcat=1272

 

[RJC]

Nope, you need to look for the Extreme edition cpu's in the dark Gray box.

 

[JonJ678]

There was confusion related to the memory multiplier, or possibly the uncore one being "unlocked" before release. Along with fears that overclocking would be impossible by design and so forth. It doesn't appear to be the case.

I can't shake the suspicion that the identity of the chip is set by the resistors/silvery things on the top but I'm yet to see anyone try moving them around.

 

[bulldog147]

Yes the i7 950 do have x23 on it ! 23 x 191 = 4393mhz !

 

[JonJ678]

Well, yes. But that's not the conventional definition of unlocked. What are you talking about?

 

[bulldog147]

see here: http://forums.overclockers.co.uk/showthread.php?p=14189911 as it stated here: The Intel Core i7 950 D0 Stepping (SLBEJ) 3.06Ghz processor at only £464.99
inc VAT has the potential to hit never before seen overclocks thanks to the D0 stepping and x23 multiplier.

 

[JonJ678]

Unlocked multiplier means you can set it to anything you like. So a 975 will let you try x30 if you fancy it. Most processors come with some value burnt in, and you can decrease it on most motherboards.

I'm not denying that the 950 has a x23 multiplier. That doesn't make it "unlocked" in the universally accepted sense of being able to set it to any value you wish.

 

[setter]

Yes the i7 950 do have x23 on it ! 23 x 191 = 4393mhz !

Tbh i dont see 4.4ghz happening on that chip on air or a H50, your into the realm of custom watercooling to attain clockspeeds like that.

 

[bulldog147]

Tbh i dont see 4.4ghz happening on that chip on air or a H50, your into the realm of custom watercooling to attain clockspeeds like that.

I did managed to get 4.4Ghz on air cooler here: http://valid.canardpc.com/show_oc.php?id=958738

 

[setter]

Was it prime/linx/ibt stable at that speed bulldog? If so well done.

 

[bulldog147]

Was it prime/linx/ibt stable at that speed bulldog? If so well done.

Yes it stable on prime/linx/ibt on max temp at 83c, 81c, 80c, 82c but only getting around 75C max on gaming, as it should be fine! Will not using prime for 24 hours 7 days a week lol

 

[bulldog147]

 

[setter]

Nice one, but i wouldnt fancy running it like that during the summer months. This is my biggest problem when it comes to cooling, during the summer the sun is beating into my room for the best part of the day, tends to get a bit too warm.

 

[bulldog147]

Nice one, but i wouldnt fancy running it like that during the summer months. This is my biggest problem when it comes to cooling, during the summer the sun is beating into my room for the best part of the day, tends to get a bit too warm.

Yeah that 100% right, I just downgrade to 3.8Ghz in summer month!

 

[setter]

Havent experienced the warm months with the i7 yet, though my previous 3.8ghz q6600 ran a bit toastier compared to its winter temps, 6-7c iirc.