1、Single core , With HT ( Eg. Pentium 4 Processor With HT )Integer and Floating Point ThreadsL2 Cache and ControlL2 Cache and Control L1 D-Cache and D-TLBSchedulersIntegerTrace CacheRename/Allocuop QueuesBTBuCodeROM33DecoderBTB & I-TLBFloatingPoint2 threads can be executed at the same time (per proces

2、sor) if theyre not competing for the same execution resourceSingle core , With HT( Eg. Pentium 4 Processor with HT )Two Floating Point ThreadsL2 Cache and ControlL2 Cache and Control L1 D-Cache and D-TLBSchedulersIntegerTrace CacheRename/Allocuop QueuesBTBuCodeROM33DecoderBTB & I-TLBFloatingPoint2 t

3、hreads CANNOT be executed at the same time (per processor) if theyre competing for the same execution resource (eg. 2 floating point threads in a P4P architecture)Dual core , Without HT( Eg. Pentium D Processor )Two Floating Point ThreadsL2 Cache and ControlL2 Cache and Control L1 D-Cache and D-TLBS

4、chedulersIntegerTrace CacheRename/Allocuop QueuesBTBuCodeROM33DecoderBTB & I-TLBFloatingPointL2 Cache and ControlL2 Cache and Control L1 D-Cache and D-TLBSchedulersIntegerTrace CacheRename/Allocuop QueuesBTBuCodeROM33DecoderBTB & I-TLBFloatingPointEven 2 floating pointthreads can be executedat the s

5、ame time now(per processor) as there are multiple floating point execution unitsDual core , With HT( Eg. Dual Core Pentium Processor Extreme Edition )Supports HTMultiple Integer and Floating Point ThreadsL2 Cache and ControlL2 Cache and Control L1 D-Cache and D-TLBSchedulersIntegerTrace CacheRename/

6、Allocuop QueuesBTBuCodeROM33DecoderBTB & I-TLBFloatingPointL2 Cache and ControlL2 Cache and Control L1 D-Cache and D-TLBSchedulersIntegerTrace CacheRename/Allocuop QueuesBTBuCodeROM33DecoderBTB & I-TLBFloatingPointWith dual core & HT together, maximum # of threads that can be executed at a time is 4 per processorDual Core with Hyper-Threading4 threads/socket Dual Core2 threads/socke