MIPS and Model Capacity Settings for IBM z890 2086 A04 Processors

In line with z990 practice, the hardware and software model designators of the z890 are completely separate. There is only one hardware model - the 2086-A04. System performance is determined by the Capacity Setting.

Performance values are given in zSeries Millions of Instructions per Second - zMIPS. These values are only approximately comparable with the MIPS values given for earlier systems because they are based on the performance of the z990 - which uses a markedly different processor design to earlier systems. Correct comparision of an earlier system with a z890 requires factoring in the workload performance differences between the earlier system and the z990. There are other tables on the Internet. There is no single numerical factor that can be applied to make this conversion.

The z990 has both "capacity" and "charging" MSUs defined. The z890 does not define capacity MSUs - the values given here are for charging purposes only. As always, the ultimate references are IBM's own LSPR and MSU tables - both also define Software Groups for the z890, and the latter also defines EWLC Tiers.

z890 Configuration Flexibility
z890 zMIPS
1-WAY 1nn	2-WAY 2nn	3-WAY 3nn	4-WAY 4nn
366	707	1040	1365
210	406	599	783
172	332	489	642
110	212	312	410
88	170	250	328
46	89	131	172
26	50	74	97

Tables by Capacity Setting
2086-A04 Capacity Setting	CPUs	zMIPS	MSUs	Software Group	EWLC Tier
110	1	27	4	35	-
210	2	50	8	38	A
310	3	72	11	40	A
410	4	99	15	40	B
120	1	45	7	38	A
220	2	90	13	40	B
320	3	131	20	50	C
420	4	171	26	60	C
130	1	90	13	40	B
230	2	171	26	60	C
330	3	252	38	80	C
430	4	329	49	80	D
140	1	108	17	50	C
240	2	212	32	70	C
340	3	311	47	80	D
440	4	410	62	80	D
150	1	171	26	60	C
250	2	333	50	80	D
350	3	491	74	80	D
450	4	644	97	IMLC	E
160	1	212	32	70	C
260	2	405	62	80	D
360	3	599	91	IMLC	E
460	4	783	119	IMLC	E
170	1	365	56	80	D
270	2	707	107	IMLC	E
370	3	1040	158	IMLC	E
470	4	1366	208	IMLC	E

MIPS, MSUs, Software Groups - IBM z890