Vlákno názorů k článku Test: paměti mají čtyřistakrát delší latenci než procesory od vlk - tak pridam tri dost odlisne intely: model name ...

tak pridam tri dost odlisne intely:

model name : Intel(R) Core(TM)2 CPU U7500 @ 1.06GHz
cpu MHz : 800.000
cache size : 2048 KB
cache_alignment : 64
model name : Intel(R) Core(TM)2 CPU U7500 @ 1.06GHz
cpu MHz : 800.000
cache size : 2048 KB
cache_alignment : 64
AVG CPU CLOCKS FOR DEPENDENT INDEPENDENT
rdtsc 86.680 85.348
32bit add 1.338 0.457
32*32->64bit imul 4.773 1.528
0*0 imul 4.795
64/32->32.32 div 41.996
64bit fadd 2.251 1.027
64bit NaN+x fadd 196.149 214.582
64bit fmul 5.000 2.028
64bit fdiv 37.471 37.000
32bit load from L1-cache 0.996 pitch=4B
typical L1-miss load 31.134 pitch=74B
load from RAM 275.46ns 220.369 pitch=1048572B
load from RAM 389.17ns 311.336 pitch=1048572B (1-pass cache flush)


model name : Intel(R) Xeon(TM) CPU 3.20GHz
cpu MHz : 3192.202
cache size : 2048 KB
cache_alignment : 128
model name : Intel(R) Xeon(TM) CPU 3.20GHz
cpu MHz : 3192.202
cache size : 2048 KB
cache_alignment : 128
AVG CPU CLOCKS FOR DEPENDENT INDEPENDENT
rdtsc 100.001 100.000
32bit add 0.999 0.397
32*32->64bit imul 11.000 2.044
0*0 imul 11.000
64/32->32.32 div 76.057
64bit fadd 5.260 1.349
64bit NaN+x fadd 1087.812 1067.265
64bit fmul 7.998 2.149
64bit fdiv 45.022 45.079
32bit load from L1-cache 1.075 pitch=4B
typical L1-miss load 44.712 pitch=74B
load from RAM 69.70ns 222.492 pitch=1048572B
load from RAM 176.68ns 564.008 pitch=1048572B (1-pass cache flush)


model name : Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz
cpu MHz : 2699.132
cache size : 8192 KB
cache_alignment : 64
model name : Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz
cpu MHz : 2699.132
cache size : 8192 KB
cache_alignment : 64
model name : Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz
cpu MHz : 2699.132
cache size : 8192 KB
cache_alignment : 64
model name : Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz
cpu MHz : 2699.132
cache size : 8192 KB
cache_alignment : 64
model name : Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz
cpu MHz : 2699.132
cache size : 8192 KB
cache_alignment : 64
model name : Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz
cpu MHz : 2699.132
cache size : 8192 KB
cache_alignment : 64
model name : Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz
cpu MHz : 2699.132
cache size : 8192 KB
cache_alignment : 64
model name : Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz
cpu MHz : 2699.132
cache size : 8192 KB
cache_alignment : 64
AVG CPU CLOCKS FOR DEPENDENT INDEPENDENT
rdtsc 21.818 21.816
32bit add 0.909 0.335
32*32->64bit imul 4.341 1.828
0*0 imul 4.342
64/32->32.32 div 25.023
64bit fadd 1.945 0.942
64bit NaN+x fadd 242.969 267.198
64bit fmul 4.543 0.942
64bit fdiv 21.804 21.750
32bit load from L1-cache 0.906 pitch=4B
typical L1-miss load 25.714 pitch=74B
load from RAM 61.38ns 165.671 pitch=1048572B
load from RAM 60.74ns 163.955 pitch=1048572B (1-pass cache flush)

jo, je to jeden procesor a je to 4-jadro a kazde znich ma dva virtualne jadra (HT)
+ v procesore je trojkanalovy radic DDR3

Když vypneš v BIOSu HT, tak by to mělo běžet víceméně 2x rychleji, ne? Docela by mě to zajímalo, uvažuju o koupení i7 _nebo_ Phenomu na komilování a chroustání čísel. Budu vděčný.