Ecco qui, ho eseguito il test con il programma indicato dal buon blackshard, in breve i risultati da me ottenuti credo non siano in linea con i suoi...
Macchina intel:
Cpu: C2D E8500 @ default (3.160 mhz)
MB: Asus P5Q-E
Ram: 4gb a 800mhz (native 1066)
Macchina amd:
Cpu: Phenom 2 x2 555 C3 (3.200 mhz)
MB: AsRock AOD790GX-128M
Ram: 8gb a 800mhz
Informazioni sparse: il test è stato condotto su windows 7 home premium a 64bit e in ambo i computer c'è il sistema di risparmio dell'energia (quindi speed step & cnq) attivi.
Istruzioni supportate (secondo il programma)
cpu Intel:
x64, 64-bit OS, MMX, SSE, SSE2, SSE3, SSE4.1
Version: x64 SSE4.1 ~ Nagisa
cpu Amd:
x64, 64-bit OS, MMX, SSE, SSE2, SSE3, SSE4a
Version: x64 SSE3 ~ Kasumi
Risultato single-threaded (hotkey 0-0-4)
Intel
Summing Series: 17,628,420 terms
Time: 461.947 seconds ( 0.128 hours )
InvSqrt...
Time: 16.118 seconds ( 0.004 hours )
Final Multiply...
Time: 9.793 seconds ( 0.003 hours )
Pi: 487.865 seconds ( 0.136 hours )
Constructing Base Conversion Table:
Time: 23.538 seconds ( 0.007 hours )
Base Converting (Primary Cutting Parameters):
Time: 116.615 seconds ( 0.032 hours )
Total Computation Time: 628.071 seconds ( 0.174 hours )
Total Time (including writing digits): 634.113 seconds ( 0.176 hours )
CPU Utilization: 99.8293 %
Multi-core Efficiency: 49.9147 %
Version: 0.4.4 Build 7762b (fix 2) (x64 SSE4.1 - Windows ~ Nagisa)
Processor(s): Intel(R) Core(TM)2 Duo CPU E8500 @ 3.16GHz
CPU Frequency: 3,172,597,855 Hz (frequency may be inaccurate)
Thread(s): 1
Digits: 250,000,000
Total Time: 628.071 seconds
Checksum: f2f98e1714f710001192b2ac31d0301c
Amd
Summing Series: 17,628,420 terms
Time: 500.580 seconds ( 0.139 hours )
InvSqrt...
Time: 16.941 seconds ( 0.005 hours )
Final Multiply...
Time: 10.513 seconds ( 0.003 hours )
Pi: 528.039 seconds ( 0.147 hours )
Constructing Base Conversion Table:
Time: 23.789 seconds ( 0.007 hours )
Base Converting (Primary Cutting Parameters):
Time: 124.609 seconds ( 0.035 hours )
Total Computation Time: 676.479 seconds ( 0.188 hours )
Total Time (including writing digits): 684.359 seconds ( 0.190 hours )
CPU Utilization: 99.8944 %
Multi-core Efficiency: 49.9472 %
Version: 0.4.4 Build 7762b (fix 2) (x64 SSE3 - Windows ~ Kasumi)
Processor(s): AMD Phenom(tm) II X2 555 Processor
CPU Frequency: 3,193,122,607 Hz (frequency may be inaccurate)
Thread(s): 1
Digits: 250,000,000
Total Time: 676.479 seconds
Checksum: 43c8a9c6d855145a1002e4f71d7048df
Risultato multi-threaded (hotkey 0-1-4)
Intel
Summing Series: 17,628,420 terms
Time: 241.596 seconds ( 0.067 hours )
InvSqrt...
Time: 8.988 seconds ( 0.002 hours )
Final Multiply...
Time: 5.381 seconds ( 0.001 hours )
Pi: 255.971 seconds ( 0.071 hours )
Constructing Base Conversion Table:
Time: 12.822 seconds ( 0.004 hours )
Base Converting (Primary Cutting Parameters):
Time: 61.977 seconds ( 0.017 hours )
Total Computation Time: 330.824 seconds ( 0.092 hours )
Total Time (including writing digits): 336.598 seconds ( 0.093 hours )
CPU Utilization: 196.52 %
Multi-core Efficiency: 98.2598 %
Version: 0.4.4 Build 7762b (fix 2) (x64 SSE4.1 - Windows ~ Nagisa)
Processor(s): Intel(R) Core(TM)2 Duo CPU E8500 @ 3.16GHz
CPU Frequency: 3,172,566,064 Hz (frequency may be inaccurate)
Thread(s): 2
Digits: 250,000,000
Total Time: 330.824 seconds
Checksum: b122d055435b445d17ba8a2a1fbf3804
Amd
Summing Series: 17,628,420 terms
Time: 256.140 seconds ( 0.071 hours )
InvSqrt...
Time: 9.045 seconds ( 0.003 hours )
Final Multiply...
Time: 5.365 seconds ( 0.001 hours )
Pi: 270.555 seconds ( 0.075 hours )
Constructing Base Conversion Table:
Time: 12.717 seconds ( 0.004 hours )
Base Converting (Primary Cutting Parameters):
Time: 64.698 seconds ( 0.018 hours )
Total Computation Time: 348.012 seconds ( 0.097 hours )
Total Time (including writing digits): 355.848 seconds ( 0.099 hours )
CPU Utilization: 195.99 %
Multi-core Efficiency: 97.9948 %
Version: 0.4.4 Build 7762b (fix 2) (x64 SSE3 - Windows ~ Kasumi)
Processor(s): AMD Phenom(tm) II X2 555 Processor
CPU Frequency: 3,193,135,407 Hz (frequency may be inaccurate)
Thread(s): 2
Digits: 250,000,000
Total Time: 348.012 seconds
Checksum: 64831f42424379a10be84b3cd31463b6
Insulti, commenti, proposte indecenti:
Personalmente, mi aspettavo una situazione di vantaggio per quanto riguarda la cpu amd, calcolando che con le ram a 1066 (per intel) il vantaggio era più ampio, c'è da dire però che ritengo l'architettura intel migliore per questo genere di calcoli, in virtù della cache di secondo livello più grande. La differenza di tempi per quanto riguarda il test su singolo core è di 50,246 secondi a vantaggio della cpu blu, passando al test multi, il vantaggio si riduce in modo più che proporzionale, ovverso cala a "soli" 20 secondi circa (qualcosa meno) per quanto riguarda questo test direi proprio che...
intel inside amd outsider
Integrazione:
Facendo girare l'eseguibile con sse3 sulla macchina intel i tempi in single threaded sono questi:
Total Computation Time: 635.409 seconds ( 0.177 hours )
Total Time (including writing digits): 641.309 seconds ( 0.178 hours )