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Their CPU benchmarks indicates better performance for the C4 compared to the RPI4 though. Is it due to the A55 being more recent ?
by artonge 6y ago
Their CPU benchmarks indicates better performance for the C4 compared to the RPI4 though. Is it due to the A55 being more recent ?
- adrian_b 6y agoThe better performance is due mainly to faster flash memory (eMMC), faster DRAM memory and bad standard cooling on RPI4. For benchmarks that depend only on the CPU, using an improved cooler on RPI4 would increase the sustained performance above Cortex-A55, except for some custom programs that could be written to take advantage of the newer extra instructions available on Cortex-A55.
- adrian_b 6y agoI want to add that for a fanless credit-card-sized computer, a quadruple Cortex-A55 is the correct CPU choice. A quadruple smartphone core like the obsolete Cortex-A72 or any of its successors, Cortex-A75, Cortex-A76 and Cortex-A77, requires a smartphone-sized board, unless you use a noisy fan for cooling. There exists also the fanless ODROID-N2, with a quadruple Cortex-A73, which, being well designed, has a larger board, which has an area similar to a smartphone or NUC. The RPI4 has a too large CPU for its size, unless fan noise is considered acceptable.
- LargoLasskhyfv 6y ago12nm vs. 28nm process for the cpu...