I've seen that the X2 and X3 can be unlocked to X4, I know that if I buy a amd X3 or X2 (PII type of course) and plan to unlock all core, I'll have a fully operational X4 cpu, which cpu should I get inorder to have a X4 from the 9XX series after a successful unlocking?
Well it is a hit or miss that you can get all the cores unlocked and running stable...
These 2 are the most favorites for core unlocking...
X3 720 - Preferred mobo Biostar, ASRock, Jetway, ECS
X2 550 - All boards with the ACC option can unlock the cores...But have heard from a forum member that it is not stable with ASUS boards...
Make sure you get a mobo with South-Bridge - SB 710/ SB 750 to get the ACC option to unlock cores...
Both of the processors mentioned would become a Phenom II X4 9XX, they already are the same processor except they've got cores disabled. Some are disabled due to defect and some just to provide inventory, purchasing for the sake of unlocking really is gambling.
Do you really think that AMD would make a working 4 core processor and call it a 3 core or a 2 core. Remember a dual core processor from AMD now is a 4 core which has failed twice in tests. So why on earth enable a duff core to me is just madness.
It does worry me a little that tri cores and dual core amds are duff 4 core processors, even thought the idea is a good one to reduce manufacturing costs and make money on muck ups. Does this show how good Intels processor manufacturing is or do they just throw duff processors away. This cant be good for AMD marketting can it... Buy a knocked down price processor because we mucked up making it.. I mean you would'nt get a duff 2 litre car and farm it out as a 1.6 would you. No.
Hey AMD just make Quad Cores at a Tri core price and sell more..
nope, what AMD is doing is sampling a random number of cores from each batch from different places, if at least 90% (can be a different number) have flawed 1 core, they switch it off and market it has X3, if 2 cores are flawed, they switch them off and market it has X2. that is random so there is a statistical chance that one of them is a perfectly working X4. it is a business decision.
If amd disabled it, it was for a reason. Every CPU goes through test before being shipped.
Buy in a stable dual core to make a unstable quad makes no sense at all.
AMD has found a marketing angle and is using it.
The initial "Propus" core will be a Deneb die with L3 disabled.
I agree that the majority of the initial Athlon II x4s will not have passed AMD testing for Phenom x4s but there will be a significant number of the original Propus that will unlock to Phenom x4s. I think this is very much intentional by AMD.
When the initial Phenom 720BEs were unlocked it may well have been a mistake on AMDs part. Now --- I don't think so.
Every chip they sell can't be a 3GHz Phenom. They have to have inventory at every price point, model and product line they wish to sell.
I'm not really into unlocking a chip but plenty of folks are interested in doing it. It should not be the primary reason to purchase a chip and I think most folks realize that.
In the case of the 'Propus' Athlon II x4s the release next week is being made as a direct shot at i5/s1156.
An inexpensive quad-core AthlonII CPU, drop-in replacement on many current motherboards, that may unlock to a Phenom x4 Deneb. Enthusiasts love stuff like that.
You betcha they are doing it on purpose.
Edit ---- I forgot the OPs question - LOL
The AthlonII x4 Propus being released next week are the next models to try to unlock. The models to look for will be 65-95w. When the models drop to 45w (sometime in Q4) the L3 will not be on the die.
But the AMD Athlon II X2 Regor is a purpose built dual core, not a mucked up lobotomized X4.
Unlike Calisto (which is still the same Deneb with manufacturing defects and 2 cores disabled) Regor is a completely new die also based on Deneb revision of K10, but with cache optimized for dual-core use, and only has two cores in a die. It has no L3 because it does not justify itself to be implemented for only two cores.
Funny how alot of you guys under estimate the so called faulty x2's and x3's... I personally know about 5 users here on toms that have B50's working perfectly fine at high clocks including me. Last night I unlocked my 550 using a 790X and I was able to achieve 3.8Ghz w/o crashing once...If all of the 550's are considered to have 2 faulty cores then how is it that my CPU passed over 8 hours of p95 without a hitch? The only thing I can say is that I paid 99.99$ for a fully working quad and that is what normally upsets the peeps that spent alot more on a "real" quad....
Bottom line, if you can unlock and find stability at reasonable clocks then you are in luck, if not you still have a fast x2 that did not break the bank.... if you need something faster get a 955... both CPU's are well priced for the performance you get