You ca n’t say that AMD is ever irksome . The company says its next - generation Bulldozer CPU essence will take a unique approach to calculate that go beyond Hyper - Threading , which some believe could bid phenomenal execution .
Bulldozer makes a fairly big prisonbreak from how today ’s multicores are constructed . Today ’s dual- , quad- , and hexa - center are based on single - cores strung together . They can share L2 or L3 cache , but broadly speaking are zone off from each other . With Bulldozer , the introductory building block of a multi - core fleck changes from a walled off single core to more of a duplex . Two meat are tightly intertwined and share fetch , decode , floating - peak scheduler , and dual 128 - moment fuse - multiply - accumulate units , or FPUs . AMD say each faculty include dedicated whole number schedulers , pipelines , and L1 stash .
This , AMD say , is far superior to Intel ’s Hyper - Threading , which can bog down down when the same resourcefulness are under consignment .
Hyper - Theading was introduced by Intel in 2002 and submit a single - core and divvy up its resources by creating a practical gist . In the Pentium 4 days , HT add a 10 to 15 percent performance increase , and in Core i7 chip , carrying out can be boosted 20 to 25 percent count on the software .
Just add consecrated , partition off cores is a “ brute force ” approach that blow resourcefulness , AMD says . With its portion out resources , Bulldozer can shrink world power consumption and squinch the die size , which in turn lowers the cost to produce the Saratoga chip . AMD says the server version of its Bulldozer chip should drive home 33 per centum more cores and a 50 percent increase in “ throughput ” in the same power envelope as a 12 - meat Magny - Cours Opteron silicon chip .
“ One of the important thing here is that Bulldozer is one of the first all - new designs from AMD in a decennary , ” tell psychoanalyst Nathan Brookwood of Insight 64 . Brookwood says one of the more exciting design changes in Bulldozer is its ability to dynamically reapportion resources on single - threaded task . On a traditional dual - core , the resources for each surround off core can not be combined . In Bulldozer , all of the resources of the faculty can be thrown at it a thread .
“ The exclusive - core performance on some float - point applications is start to be intellect - boggling , ” Brookewood says .
AMD officials say Bulldozer is being targeted at server and performance desktop machines . The good news program is that Bulldozer will be drop - in compatible with most current high-pitched - end waiter . The bad news show is that it wo n’t be compatible with existing AM3 panel . alternatively , AMD says it will infix a raw AM3 + socket . These socket will be backward compatible with older chips so you could drop a Phenom II X6 in it . According to AMD , Bulldozer will be built on a new 32 nm process at Global Foundries .
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