Feb. 19th, 2016

fanf: (dotat)

This afternoon I was talking to an undergrad about email in Cambridge, and showing some old pictures of Hermes to give some idea of what things were like many years ago. This made me wonder, how does a Raspberry Pi 2 (in a Pibow case) compare to a Sun E450 like the ones we decommissioned in 2004?

ETA (2016-02-29): I have embiggened this table to include details of the Raspberry Pi 3. It's worth noting when comparing the IO ports that both models of Raspberry Pi hang the ethernet and four USB ports off one USB2 480 Mbit/s bus. In the Raspberry Pi 3 the WiFi shares the SDIO bus with the SD card slot, and the Bluetooth hangs off a UART. The E450 has a lot more IO bandwidth.

Raspberry Pi 2 Raspberry Pi 3 Sun Enterprise 450
(in PiBow case)
2015 - 2016 - 1997-2002
£44 $14 000
physical
dimensions 99 x 66 x 30 mm 696 x 448 x 581 mm
volume 196 cm3 181 000 cm3
weight 137 g 94 000 g
CPU
cores 4 x ARM Cortex-A7 4 x ARM Cortex-A53 4 x UltraSPARC II
word size 32 bit 64 bit 64 bit
issue width 2-way in-order 4-way in-order
clock 900 MHz 1200 MHz 400 MHz
GPU Videocore IV
250 MHz 300 MHz
Memory
L1 i-cache 32 KB 16 KB
L1 d-cache 32 KB 16 KB
L2 cache 512 KB 4 MB
RAM 1 GB 4 GB
bandwidth 900 MB/s 1778 MB/s
I/O
Network 1 x 100 Mb/s ethernet 1 x 100 Mb/s ethernet 1 x 100 Mb/s ethernet
1 x 72 Mb/s 802.11n WiFi
1 x 24 Mb/s Bluetooth 4.1
Disk bus speed 25 MB/s 40 MB/s
Disk interface 1 x MicroSD 5 x UltraSCSI-3
1 x UltraSCSI-2
1 x floppy
1 x CD-ROM
other







1 x UART
4 x USB
8 x GPIO
2 x I²C
2 x SPI
HDMI
DSI
CSI








2 x UART
1 x mini DIN-8
1 x centronics
3 x 64 bit 66 MHz PCI
4 x 64 bit 33 MHz PCI
3 x 32 bit 33 MHz PCI


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