Как обещал, выкладываю openssl speed на йехуносе 4412 прайм. Во избежание вопросов лишних: openssl speed загружает только одно ядро из 4х, соответственно в многопоточном приложении это можно домножать на 4.
Текущие настройки PLL'ек:
[ 0.000000] EXYNOS4: PLL settings, A=1000000000, M=880000000, E=96000000 V=350000000
[ 0.000000] EXYNOS4: ARMCLK=1000000000, DMC=440000000, ACLK200=176000000
[ 0.000000] ACLK100=110000000, ACLK160=176000000, ACLK133=146666666
Не совсем понятно разогнан он до 2Ghz, или на 1.7Ghz заявленных пашет, так как устройство клокового дерева не раскуривал пока еще, убут стоит на eMMC стоковый, cpufreq пока выпилен, так как выставляет весьма актуальные 0 вольт на ядро при загрузке.
root@fireblade:~# uname -a
Linux fireblade 3.8.13-fireblade+ #12 SMP PREEMPT Sun May 19
15:47:49 MSK 2013 armv7l GNU/Linux
root@fireblade:~# cat /proc/cpuinfo
processor : 0
model name : ARMv7 Processor rev 0 (v7l)
BogoMIPS : 1992.29
Features : swp half thumb fastmult vfp edsp thumbee neon vfpv3 tls
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x3
CPU part : 0xc09
CPU revision : 0
processor : 1
model name : ARMv7 Processor rev 0 (v7l)
BogoMIPS : 1992.29
Features : swp half thumb fastmult vfp edsp thumbee neon vfpv3 tls
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x3
CPU part : 0xc09
CPU revision : 0
processor : 2
model name : ARMv7 Processor rev 0 (v7l)
BogoMIPS : 1992.29
Features : swp half thumb fastmult vfp edsp thumbee neon vfpv3 tls
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x3
CPU part : 0xc09
CPU revision : 0
processor : 3
model name : ARMv7 Processor rev 0 (v7l)
BogoMIPS : 1992.29
Features : swp half thumb fastmult vfp edsp thumbee neon vfpv3 tls
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x3
CPU part : 0xc09
CPU revision : 0
Hardware : ODROIDX2
Revision : 0000
Serial : 0000000000000000
OpenSSL 1.0.1e 11 Feb 2013
built on: Mon Mar 18 21:48:12 UTC 2013
options:bn(64,32) rc4(ptr,char) des(idx,cisc,16,long) aes(partial) blowfish(ptr)
compiler: gcc -fPIC -DOPENSSL_PIC -DZLIB -DOPENSSL_THREADS -D_REENTRANT -DDSO_DLFCN -DHAVE_DLFCN_H -DL_ENDIAN -DTERMIO -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2 -Wl,-z,relro l
The 'numbers' are in 1000s of bytes per second processed.
type 16 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
md2 0.00 0.00 0.00 0.00 0.00
mdc2 0.00 0.00 0.00 0.00 0.00
md4 6529.09k 23272.49k 67641.09k 130539.18k 179271.00k
md5 5364.99k 18026.07k 47725.48k 81412.10k 102629.38k
hmac(md5) 6038.71k 19773.80k 50689.19k 83475.46k 103011.67k
sha1 5158.83k 15600.62k 35575.55k 52458.50k 60912.98k
rmd160 4654.14k 13679.91k 29962.33k 42733.23k 48846.17k
rc4 60824.26k 68389.57k 71433.73k 72127.49k 72302.59k
des cbc 15824.01k 16744.32k 16994.56k 17059.16k 17080.32k
des ede3 6165.09k 6336.28k 6389.25k 6385.66k 6387.03k
idea cbc 0.00 0.00 0.00 0.00 0.00
seed cbc 18145.35k 19757.85k 20186.03k 20319.91k 20351.66k
rc2 cbc 11042.71k 11582.12k 11731.20k 11772.93k 11782.83k
rc5-32/12 cbc 0.00 0.00 0.00 0.00 0.00
blowfish cbc 23803.83k 26288.21k 26973.87k 27162.97k 27232.94k
cast cbc 21904.79k 23836.82k 24805.38k 24956.59k 24928.26k
aes-128 cbc 16797.56k 18162.84k 18586.03k 18691.41k 18721.45k
aes-192 cbc 14392.34k 15302.08k 15594.07k 15649.79k 15684.95k
aes-256 cbc 12652.89k 13416.55k 13629.27k 13693.61k 13691.56k
camellia-128 cbc 23610.66k 26229.91k 27077.21k 27371.52k 27437.74k
camellia-192 cbc 19005.77k 20596.71k 21206.78k 21354.50k 21402.97k
camellia-256 cbc 18978.20k 20698.30k 21227.18k 21365.42k 21402.97k
sha256 3825.71k 8879.13k 15610.20k 19273.39k 20762.20k
sha512 942.77k 3758.95k 5322.15k 7229.92k 8115.54k
whirlpool 1391.82k 2829.87k 4549.97k 5411.16k 5687.98k
aes-128 ige 15903.52k 17479.45k 17902.51k 18032.98k 18101.59k
aes-192 ige 13769.01k 14905.49k 15244.89k 15333.38k 15298.08k
aes-256 ige 12133.72k 12951.27k 13191.51k 13269.67k 13342.04k
ghash 15372.38k 15852.33k 16080.47k 16138.58k 16154.62k
sign verify sign/s verify/s
rsa 512 bits 0.001919s 0.000167s 521.0 5973.9
rsa 1024 bits 0.010215s 0.000494s 97.9 2025.5
rsa 2048 bits 0.060848s 0.001613s 16.4 620.0
rsa 4096 bits 0.394231s 0.005510s 2.5 181.5
sign verify sign/s verify/s
dsa 512 bits 0.001736s 0.001917s 576.0 521.7
dsa 1024 bits 0.004950s 0.005666s 202.0 176.5
dsa 2048 bits 0.016077s 0.018571s 62.2 53.8
sign verify sign/s verify/s
160 bit ecdsa (secp160r1) 0.0010s 0.0043s 1046.1 232.1
192 bit ecdsa (nistp192) 0.0010s 0.0047s 963.9 212.5
224 bit ecdsa (nistp224) 0.0013s 0.0059s 787.7 170.8
256 bit ecdsa (nistp256) 0.0015s 0.0075s 656.3 133.5
384 bit ecdsa (nistp384) 0.0031s 0.0160s 327.6 62.5
521 bit ecdsa (nistp521) 0.0083s 0.0442s 121.0 22.6
163 bit ecdsa (nistk163) 0.0020s 0.0080s 496.0 124.8
233 bit ecdsa (nistk233) 0.0042s 0.0156s 240.1 64.0
283 bit ecdsa (nistk283) 0.0064s 0.0295s 156.0 33.9
409 bit ecdsa (nistk409) 0.0166s 0.0686s 60.2 14.6
571 bit ecdsa (nistk571) 0.0425s 0.1581s 23.5 6.3
163 bit ecdsa (nistb163) 0.0020s 0.0087s 499.5 114.9
233 bit ecdsa (nistb233) 0.0041s 0.0174s 242.3 57.3
283 bit ecdsa (nistb283) 0.0064s 0.0333s 156.0 30.1
409 bit ecdsa (nistb409) 0.0166s 0.0782s 60.3 12.8
571 bit ecdsa (nistb571) 0.0425s 0.1822s 23.5 5.5
op op/s
160 bit ecdh (secp160r1) 0.0036s 279.9
192 bit ecdh (nistp192) 0.0039s 253.8
224 bit ecdh (nistp224) 0.0050s 199.4
256 bit ecdh (nistp256) 0.0064s 155.8
384 bit ecdh (nistp384) 0.0133s 75.3
521 bit ecdh (nistp521) 0.0365s 27.4
163 bit ecdh (nistk163) 0.0040s 252.7
233 bit ecdh (nistk233) 0.0078s 128.9
283 bit ecdh (nistk283) 0.0146s 68.4
409 bit ecdh (nistk409) 0.0337s 29.7
571 bit ecdh (nistk571) 0.0787s 12.7
163 bit ecdh (nistb163) 0.0042s 237.8
233 bit ecdh (nistb233) 0.0087s 115.2
283 bit ecdh (nistb283) 0.0164s 61.1
409 bit ecdh (nistb409) 0.0390s 25.6
571 bit ecdh (nistb571) 0.0906s 11.0
Для сравнения, Intel Atom, который пока еще исполняет роль сервачка:
[root@ariel ~]$ uname -a
Linux ariel.home 3.8.8-2-ARCH #1 SMP PREEMPT Tue Apr 23 10:28:14 CEST 2013 x86_64 GNU/Linux
[root@ariel ~]$ cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 28
model name : Intel(R) Atom(TM) CPU D410 @ 1.66GHz
stepping : 10
microcode : 0x107
cpu MHz : 1666.794
cache size : 512 KB
physical id : 0
siblings : 1
core id : 0
cpu cores : 1
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl tm2 ssse3 cx16 xtpr pdcm movbe lahf_lm dtherm
bogomips : 3334.48
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:
processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 28
model name : Intel(R) Atom(TM) CPU D410 @ 1.66GHz
stepping : 10
microcode : 0x107
cpu MHz : 1666.794
cache size : 512 KB
physical id : 0
siblings : 1
core id : 0
cpu cores : 0
apicid : 1
initial apicid : 1
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl tm2 ssse3 cx16 xtpr pdcm movbe lahf_lm dtherm
bogomips : 3334.48
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:
OpenSSL 1.0.1e 11 Feb 2013
built on: Sun Feb 17 13:43:48 CET 2013
options:bn(64,64) md2(int) rc4(16x,int) des(idx,cisc,16,int) aes(partial) idea(int) blowfish(idx)
compiler: gcc -fPIC -DOPENSSL_PIC -DZLIB -DOPENSSL_THREADS -D_REENTRANT -DDSO_DLFCN -DHAVE_DLFCN_H -Wa,--noexecstack -march=x86-64 -mtune=generic -O2 -pipe -fstack-protector --param=ssp-buffer-size=4 -D_FORTIFY_SOURCE=2 -m64 -DL_ENDIAN -DTERMIO -O3 -Wall -DOPENSSL_IA32_SSE2 -DOPENSSL_BN_ASM_MONT -DOPENSSL_BN_ASM_MONT5 -DOPENSSL_BN_ASM_GF2m -DSHA1_ASM -DSHA256_ASM -DSHA512_ASM -DMD5_ASM -DAES_ASM -DVPAES_ASM -DBSAES_ASM -DWHIRLPOOL_ASM -DGHASH_ASM
The 'numbers' are in 1000s of bytes per second processed.
type 16 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
md2 1628.29k 3432.53k 4378.62k 5258.24k 5428.57k
mdc2 2814.97k 2648.83k 2967.55k 2380.12k 2419.24k
md4 11747.02k 37872.11k 101679.45k 285940.18k 378224.64k
md5 12270.20k 42342.34k 118185.22k 217204.39k 249691.61k
hmac(md5) 8920.68k 41763.39k 118152.70k 217108.82k 287825.92k
sha1 13964.91k 42654.51k 98013.44k 145717.93k 170876.93k
rmd160 10778.05k 29382.93k 60047.45k 81468.07k 91018.58k
rc4 82619.43k 136546.88k 165707.35k 176259.07k 179623.25k
des cbc 16169.89k 16991.08k 17272.41k 17340.07k 16673.62k
des ede3 5527.56k 6200.51k 6238.98k 5211.78k 5062.66k
idea cbc 14184.29k 14992.43k 15199.40k 11955.54k 11756.48k
seed cbc 21706.14k 23271.02k 23736.32k 29682.35k 29810.69k
rc2 cbc 16107.42k 17199.57k 17483.52k 17555.80k 17574.57k
rc5-32/12 cbc 0.00 0.00 0.00 0.00 0.00
blowfish cbc 37352.15k 42513.75k 43964.59k 44407.81k 44537.17k
cast cbc 31234.14k 31685.93k 34859.18k 32732.84k 30663.46k
aes-128 cbc 15881.35k 18612.07k 17783.13k 26146.25k 26228.05k
aes-192 cbc 19154.37k 20981.87k 21630.63k 16891.90k 20507.40k
aes-256 cbc 16747.72k 18007.85k 18391.81k 18501.29k 18524.84k
camellia-128 cbc 23880.61k 36693.78k 42322.52k 44083.20k 44619.09k
camellia-192 cbc 20403.17k 28919.21k 32499.11k 33528.15k 33838.42k
camellia-256 cbc 20399.84k 28917.87k 32497.92k 33524.39k 33832.96k
sha256 13351.27k 29992.70k 51826.60k 63556.61k 68029.10k
sha512 10114.77k 40552.53k 62496.51k 88201.22k 100382.04k
whirlpool 5361.45k 11312.23k 18665.47k 22377.13k 23748.61k
aes-128 ige 22774.05k 24335.23k 24827.90k 24946.01k 24816.30k
aes-192 ige 16358.46k 19176.35k 20822.36k 20933.29k 20952.41k
aes-256 ige 16750.58k 17436.35k 17805.65k 17870.17k 17883.14k
ghash 53090.65k 81907.97k 94487.47k 98891.00k 99789.48k
sign verify sign/s verify/s
rsa 512 bits 0.000482s 0.000038s 2075.5 26355.4
rsa 1024 bits 0.002233s 0.000117s 447.8 8516.7
rsa 2048 bits 0.013731s 0.000420s 72.8 2379.2
rsa 4096 bits 0.100400s 0.001608s 10.0 621.7
sign verify sign/s verify/s
dsa 512 bits 0.000441s 0.000457s 2266.5 2189.5
dsa 1024 bits 0.001539s 0.001531s 649.6 653.2
dsa 2048 bits 0.004205s 0.005038s 237.8 198.5
sign verify sign/s verify/s
160 bit ecdsa (secp160r1) 0.0004s 0.0014s 2731.2 692.7
192 bit ecdsa (nistp192) 0.0004s 0.0018s 2338.4 568.7
224 bit ecdsa (nistp224) 0.0005s 0.0012s 2160.2 861.2
256 bit ecdsa (nistp256) 0.0008s 0.0021s 1299.5 479.3
384 bit ecdsa (nistp384) 0.0014s 0.0074s 699.2 136.0
521 bit ecdsa (nistp521) 0.0030s 0.0074s 334.2 135.6
163 bit ecdsa (nistk163) 0.0011s 0.0053s 883.6 190.2
233 bit ecdsa (nistk233) 0.0022s 0.0055s 455.9 182.7
283 bit ecdsa (nistk283) 0.0033s 0.0115s 306.6 86.9
409 bit ecdsa (nistk409) 0.0071s 0.0235s 140.3 42.5
571 bit ecdsa (nistk571) 0.0156s 0.0592s 63.9 16.9
163 bit ecdsa (nistb163) 0.0010s 0.0042s 1012.4 236.3
233 bit ecdsa (nistb233) 0.0019s 0.0058s 527.4 171.5
283 bit ecdsa (nistb283) 0.0032s 0.0125s 307.8 80.2
409 bit ecdsa (nistb409) 0.0071s 0.0343s 140.2 29.1
571 bit ecdsa (nistb571) 0.0208s 0.0646s 48.0 15.5
op op/s
160 bit ecdh (secp160r1) 0.0012s 814.6
192 bit ecdh (nistp192) 0.0015s 659.5
224 bit ecdh (nistp224) 0.0008s 1198.4
256 bit ecdh (nistp256) 0.0016s 630.5
384 bit ecdh (nistp384) 0.0061s 164.2
521 bit ecdh (nistp521) 0.0052s 192.0
163 bit ecdh (nistk163) 0.0020s 510.8
233 bit ecdh (nistk233) 0.0027s 375.8
283 bit ecdh (nistk283) 0.0055s 182.4
409 bit ecdh (nistk409) 0.0116s 86.2
571 bit ecdh (nistk571) 0.0258s 38.7
163 bit ecdh (nistb163) 0.0021s 477.4
233 bit ecdh (nistb233) 0.0028s 354.5
283 bit ecdh (nistb283) 0.0063s 157.7
409 bit ecdh (nistb409) 0.0197s 50.7
571 bit ecdh (nistb571) 0.0335s 29.9
Наконец, openssl speed на allwinner a10 (cubieboard) Камень (cortex a8) - 1Ghz, память DDR3
root@frostblade:~$ uname -a
Linux frostblade 3.4.29-frostblade+ #13 PREEMPT Wed Feb 20 18:32:26 MSK 2013 armv7l GNU/Linux
root@frostblade:~$ cat /proc/cpuinfo
Processor : ARMv7 Processor rev 2 (v7l)
BogoMIPS : 59.63
Features : swp half thumb fastmult vfp edsp neon vfpv3 tls
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x3
CPU part : 0xc08
CPU revision : 2
Hardware : sun4i
Revision : 0000
Serial : 0000000000000000
OpenSSL 1.0.1e 11 Feb 2013
built on: Mon Mar 18 21:48:12 UTC 2013
options:bn(64,32) rc4(ptr,char) des(idx,cisc,16,long) aes(partial) blowfish(ptr)
compiler: gcc -fPIC -DOPENSSL_PIC -DZLIB -DOPENSSL_THREADS -D_REENTRANT -DDSO_DLFCN -DHAVE_DLFCN_H -DL_ENDIAN -DTERMIO -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2 -Wl,-z,relro -Wa,--noexecstack -Wall
The 'numbers' are in 1000s of bytes per second processed.
type 16 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
md2 0.00 0.00 0.00 0.00 0.00
mdc2 0.00 0.00 0.00 0.00 0.00
md4 3836.65k 21655.45k 65253.37k 129043.80k 182678.86k
md5 4745.66k 16494.77k 46431.70k 83781.63k 110018.56k
hmac(md5) 5889.62k 19830.08k 52413.27k 89145.73k 110886.91k
sha1 4824.06k 15002.67k 35610.03k 54326.11k 64088.37k
rmd160 4386.36k 13280.11k 30255.45k 44843.64k 51982.73k
rc4 68046.46k 76740.91k 80890.35k 81775.48k 82204.94k
des cbc 17426.22k 18522.80k 19014.79k 18994.86k 19002.71k
des ede3 6845.03k 7014.53k 7084.69k 7081.35k 7045.12k
idea cbc 0.00 0.00 0.00 0.00 0.00
seed cbc 19515.29k 21735.58k 22375.59k 22660.88k 22701.98k
rc2 cbc 13061.30k 13905.10k 14040.58k 14105.60k 14143.57k
rc5-32/12 cbc 0.00 0.00 0.00 0.00 0.00
blowfish cbc 26473.72k 29112.23k 30361.26k 30348.97k 30324.33k
cast cbc 25595.32k 28268.54k 29115.48k 29309.27k 29409.01k
aes-128 cbc 18499.38k 20337.09k 21028.52k 21200.57k 21251.67k
aes-192 cbc 16019.72k 17364.91k 17876.42k 18046.80k 17940.48k
aes-256 cbc 14008.74k 15162.41k 15496.05k 15567.88k 15597.68k
camellia-128 cbc 24860.18k 28272.41k 29428.22k 29873.74k 29990.44k
camellia-192 cbc 20353.59k 22497.75k 23315.29k 23599.95k 23397.36k
camellia-256 cbc 20254.65k 22707.44k 23324.16k 23661.99k 23491.93k
sha256 4002.91k 9521.19k 17102.76k 21525.30k 23180.63k
sha512 796.41k 3201.46k 4357.02k 6139.55k 6824.84k
whirlpool 1187.75k 2445.98k 3949.99k 4697.39k 4967.43k
aes-128 ige 16839.74k 19126.35k 19316.39k 19827.71k 20299.50k
aes-192 ige 14772.68k 16384.38k 16654.73k 17008.30k 17091.36k
aes-256 ige 13142.42k 14365.74k 14586.18k 14829.23k 14942.87k
ghash 14760.38k 15350.45k 15694.18k 15643.91k 15613.95k
sign verify sign/s verify/s
rsa 512 bits 0.002263s 0.000201s 441.9 4978.8
rsa 1024 bits 0.012082s 0.000585s 82.8 1708.2
rsa 2048 bits 0.072555s 0.001949s 13.8 513.2
rsa 4096 bits 0.473182s 0.006687s 2.1 149.5
sign verify sign/s verify/s
dsa 512 bits 0.002043s 0.002277s 489.5 439.2
dsa 1024 bits 0.005887s 0.006810s 169.9 146.8
dsa 2048 bits 0.019341s 0.022733s 51.7 44.0
sign verify sign/s verify/s
160 bit ecdsa (secp160r1) 0.0011s 0.0048s 940.7 207.4
192 bit ecdsa (nistp192) 0.0011s 0.0052s 883.4 193.9
224 bit ecdsa (nistp224) 0.0014s 0.0067s 704.7 148.6
256 bit ecdsa (nistp256) 0.0017s 0.0083s 595.8 120.2
384 bit ecdsa (nistp384) 0.0036s 0.0186s 278.9 53.9
521 bit ecdsa (nistp521) 0.0098s 0.0521s 101.9 19.2
163 bit ecdsa (nistk163) 0.0021s 0.0081s 472.7 123.5
233 bit ecdsa (nistk233) 0.0044s 0.0157s 225.2 63.9
283 bit ecdsa (nistk283) 0.0068s 0.0288s 146.3 34.7
409 bit ecdsa (nistk409) 0.0187s 0.0667s 53.6 15.0
571 bit ecdsa (nistk571) 0.0451s 0.1529s 22.2 6.5
163 bit ecdsa (nistb163) 0.0021s 0.0088s 484.8 113.9
233 bit ecdsa (nistb233) 0.0044s 0.0175s 227.8 57.0
283 bit ecdsa (nistb283) 0.0068s 0.0322s 147.0 31.0
409 bit ecdsa (nistb409) 0.0187s 0.0760s 53.5 13.2
571 bit ecdsa (nistb571) 0.0447s 0.1765s 22.4 5.7
op op/s
160 bit ecdh (secp160r1) 0.0041s 242.5
192 bit ecdh (nistp192) 0.0044s 229.7
224 bit ecdh (nistp224) 0.0055s 182.1
256 bit ecdh (nistp256) 0.0070s 142.4
384 bit ecdh (nistp384) 0.0157s 63.8
521 bit ecdh (nistp521) 0.0434s 23.1
163 bit ecdh (nistk163) 0.0040s 249.6
233 bit ecdh (nistk233) 0.0077s 129.5
283 bit ecdh (nistk283) 0.0142s 70.3
409 bit ecdh (nistk409) 0.0328s 30.5
571 bit ecdh (nistk571) 0.0764s 13.1
163 bit ecdh (nistb163) 0.0042s 237.9
233 bit ecdh (nistb233) 0.0086s 116.1
283 bit ecdh (nistb283) 0.0160s 62.6
409 bit ecdh (nistb409) 0.0379s 26.4
571 bit ecdh (nistb571) 0.0879s 11.4
Сухой остаток:
* Одно ядро атома где-то в два раза быстре одного ядра йехуноса на сферических тестах.
* Для многих тестов боттлнеком является скорость DDR2, так, например, allwinner a10 с DDR3 уделывает одно йехуноса на некоторых тестах, при том, что работает почти на в два раза меньшей частоте.
* Судя по флагам, многие алго под атом оптимизнуты ручками на ассемблере, в то время как на арме, надо полагать, трудится исключительно выхлоп компилятора.
* арм таки жрет в разы меньше. при максимальной нагрузке он хавал от лабораторного БП меньше 10 ватт.