SiFive社から発表されたRISC-Vコアまとめ

2018/11/01追記。だいぶ増えてきた。表更新。

2019/04/17追記。S21を追加。

• U7, S7, E7 Series

	U74-MC	U74 Standard	S76-MC	S76 Standard	E76-MC(Main-Core)	E76-MC(Sub-core)	E76 Standard
Core Type	U74 RV64C	S7 RV64IMAC	RV64GC	RV64GC	RV64GC	RV32IMAFC	RV32IMAFC
L1 Icache	32kB	16kB	32kB	32kB, ITIM option	32kB, ITIM option	32kB, ITIM option	32kB, ITIM option
L1 Dcache	32kB	8kB DTIM	32kB	32kB, FIO RAM option	32kB, FIO RAM option	32kB, FIO RAM	32kB, FIO RAM
Memory Protection	8	8	8
Local Interruption Per Core
Core Local Interrupt	CLIC	-	CLIC
Virtual Memory Support	Sv39	-	Sv39
L2 ECC	2MB		128kB
DMIPS/MHz	2.5		2.5		2.5	2.3	2.3
Coremark/MHz	4.9		4.9		4.9	4.9	4.9
Pipeline				In-order, 8-stage	In-order, 8-stage	8-stage	8-stage

• U5, S5 Series

	U54‑MC(Main-Core)	U54‑MC(Sub-Core)	S54 Standard Core	S51 Standard Core
Core Type	U54 RV64GC	E51 RV64IMAC	RV64IMAFDC	RV64IMAC
L1 Icache	32kB	16kB	16kB, ITIM option	16kB, ITIM option
L1 Dcache	32kB	8kB DTIM	64kB DTIM	64kB DTIM
Memory Protection	8	8	8	8
Local Interruption Per Core	48	48	16	16
Core Local Interrupt	-	-	1 timer, 1SW	1 timer, 1 SW
Virtual Memory Support	Sv39	-	Up to 40 physical address	-
L2 ECC	2MB		-	-
DMIPS/MHz	1.7	1.61	1.7	1.7
Coremark/MHz	2.75	2.73	3.01	3.01
Pipeline			In-order, 5-6stage	In-order, 5-6stage

• E3, E2, S2 Series

	E34 Standard Core	E31 Standard Core	E24 Standard Core	E21 Standard Core	E20 Standard Core	S21
Core Type	RV32IMAFC	RV32IMAC	RV32IMAFC	RV32IMAC	RV32IMC	RV64IMAC
L1 Icache	16kB, ITIM option	16kB, ITIM option	-	-	-	-
L1 Dcache	64kB, DTIM support	64kB, DTIM support	-	-	-	-
Memory Protection	8	8	8	2	-	Up to 8
Local Interruption Per Core	16	16	?	127	-	Up to 1024
Core Local Interrupt	1 timer, 1 SW	1 timer, 1 SW	1024 Interrupts	127 Interrupts	32 Interrupts	CLIC with 127 interrupts
Virtual Memory Support	-	-	-	-	-	-
L2 ECC	-	-	-	-	-	-
DMIPS/MHz	1.61	1.61	1.38	1.38	1.1	1.6
Coremark/MHz	3.01	3.01	3.1	3.1	2.4	3.2
Pipeline	In-order, 5-6stage	In-order, 5-6stage	3-stage	3-stage	2-stage	-