we had this talk at another forums, and it ended with me pointing out how many sockets intel has had vs amd in the same aprox time range. figuared i would see what you all thought and if any of you had more info to add. below in my quote without the quote boxes(so people can quote me properly and respond to each point as they see fit ) as to sockets slot1 slot2 370 celeron 370copermine 370tulitin 423 orignal p4, dissapeared within 6 months you couldnt get chips for it. 478 400/533 478 533/800 479 dorthan 603 604 771 775prescot(or whatever first 775 chips where) 775pentium-d/dual core netburst 775 core2/conroe 775 1333fsb c2d/c2q socket-m thats 17, but i know i missed a few server side sockets but hey this is just prooving a point amd super7(added at request of the intel fanboi) slotA (same as above) A/462 754 939 940 am2 am2+ socketF s1(754 with ddr2 support for laptops) lets count 10 sockets no versions of said sockets that force you to get a new board if you want a newer core/chip, hell socketA 100mhz buss still was able to get chips up to the end of the socketA days, i know i have a xp-m 2800 100mhz version in the other room in an amd irongate mobo(100mhz max fsb) 754 was used for desktops AND laptops and got quite a few cores clawhammer newcastle Paris (orignal sempy chips) venice e3 venice e6 plarmo e6 newark(4000+ 1mb cache) Lancaster aka turion 939 has had clawhammer c0 clawhammer cg newcastle winchester venice e3 venice e6 san diago e4 san diago e6 tolido manchester e4 manchester e6 denmark (thanks AthlonX2) there may be a core i missed, but each of those name changes would from intel have requiered a new board/chipset to beable to upgrade, but amd you could just swap the chip out and bam you got newer faster chip/core with newer fetures. i wont list 940 because its not a desktop/consumer level socket really. am2 has like 4 cores i think currently Manila sempy64 Orleans a64 1 core windsor a64 x2 Santa Ana opteron brisbanne 65nm a64 x2 (thanks PT) but we have many more cores to come, 65nm, barcalona(k8l) and beyond socketA i will list only because so many people still use it this list may be missing cores if so please let us know spitfire(duron) tbird (athlon) palimino(athlonxp) tbred-a (axp) tbred-b (axp/sempron) throton (axp/sempron) barton (axp) applebread(duron) im not sure but i think im missing some cores there, but also socketA was very backword compatable, versions with higher multi and lower fsb wherent hard to find for use in orignal socketA boards that couldnt do more then 100mhz fsb. again each core change with intel requiers a new board/chipset to beable to upgrade your chip to that newer/faster/better core. amd on the other hand leaves people who adopt a socket/board/platform a way to upgrade for years after that socket comes out, sure 939 only got a couple years, but it got ALOT of cores without need to buy a new board. i would list intel core changes to socket forced upgrades but honestly, i dont keep track of intels core revisions anymore, sure core2duo/conroe is a nice chip, but i dont see a future upgrade path being there a year from now, am2 on the other hand has been ASSURED an upgrade path by AMD them selves!!!