I had a look around for an easy method to compare cpu + memory speed only
	
	
@Askarus could you run this on your machines please ?
sha512 because it is 64bit and hash functions typically are not accelerated in hardware because they need complexity / runtime to make cryptography expensive to crack with brute force (thats why ASICs which accelerate these in hardware for cryptocurrency mining outperform anything else by a wide margin)
this will only test one core but here are my results on what was available to test atm. all machines were mostly idle during testing - the last number for 8192 bytes is probably easiest to compare with
Laptop (Win10)
Intel(R) Core(TM) i7-5500U CPU @ 2.40GHz
type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes
sha512           44,088.08k  175,853.14k  304,696.49k  449,638.74k  524,825.94k
GPD Pocket (Win10)
Intel(R) Atom(TM) x7-z8750 CPU @ 1.60GHz
type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes
sha512           15,455.39k  62,050.37k   92,394.55k  127,678.73k  143,106.05k
systems without desktop:
Server #1
Intel(R) Xeon(R) CPU E5-2603 v4 @ 1.70GHz
type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes
sha512           25,806.16k  103,611.54k  181,265.83k  272,235.86k  317,393.58k
Server #2
Intel(R) Xeon(R) CPU E5-2630 v3 @ 2.40GHz
type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes
sha512           47,084.60k  193,835.67k  332,567.30k  504,517.97k  579,228.83k
Server #3
Intel(R) Xeon(R) CPU E3-1270 v3 @ 3.50GHz
type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes
sha512           48,028.79k  191,447.08k  297,108.39k  429,713.21k  474,374.14k
Server #4
Intel(R) Xeon(R) CPU E3-1246 v3 @ 3.50GHz
type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes
sha512           46,476.95k  190,498.47k  295,599.88k  427,985.92k  474,077.30k
Server #5
Intel(R) Xeon(R) CPU E3-1245 V2 @ 3.40GHz
type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes
sha512           46,472.21k  186,929.10k  282,717.61k  398,995.80k  457,583.27k
Raspberry Pi 1*
ARMv6-compatible processor rev 7 (v6l) / BCM2835 @ 700 MHz
type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes
sha512            1030.10k     4079.68k     6142.39k     8409.25k     9428.25k
Raspberry Pi 1 (older)*
ARMv6-compatible processor rev 7 (v6l) / BCM2708 @ 700 MHz
type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes
sha512            1067.99k     3652.71k     5982.93k     7389.08k     7959.94k
-----
Raspberry Pi 3 (did not test myself)
type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes
sha512            3538.26k    14,210.94k   20,680.53k   28,309.85k   31,741.27k
*first generation Raspberry Pis came with 32bit CPUs which means they stink at doing 64bit calculations for sha512