Voltage and Current Specifications

Eagle Stream Platform

Data Sheet

ID	Date	Version	Classification
814095	04/04/2025	001	Public

The VCCIN Rail Current and Voltage Specifications for 4th Gen Intel® Xeon® Processor Scalable Family, Codename Sapphire Rapids

TDP / PL1 (W)	VCCIN_VID (V)	VCCIN_R_LL (mΩ)	IccIN_Max (A)	IccIN_Max. app (A)	IccIN_PL1 (A)	PMax (W)	PMax.app (W)	VCCIN 2^nd Droop Vmin (V)	VCCIN 3^rd Droop Vmin (V)	VCCIN_VOvS_MAX for the First 25 µs (V)	Vtrip (V)
85	1.8	0.85	76	66	42	200	184	1.713	1.713	1.872	1.7199
95	1.8	0.85	91	79	48	222	204	1.701	1.701	1.872	1.7089
105	1.8	0.85	106	92	54	244	225	1.688	1.688	1.871	1.6978
125	1.8	0.85	141	119	66	298	267	1.658	1.658	1.870	1.6749
135	1.8	0.85	160	132	72	327	289	1.642	1.642	1.870	1.6638
145	1.8	0.85	180	146	78	358	311	1.625	1.625	1.869	1.6519
150	1.8	0.85	190	153	81	373	323	1.617	1.617	1.869	1.6460
155	1.8	0.85	201	160	84	389	334	1.607	1.607	1.868	1.6400
165	1.8	0.85	222	175	90	422	357	1.589	1.589	1.867	1.6273
185	1.8	0.85	266	204	102	490	405	1.572	1.556	1.866	1.6026
205	1.83	0.85	314	235	113	562	454	1.574	1.556	1.865	1.6063
225	1.83	0.5	364	266	122	638	504	1.626	1.626	1.863	1.6730
250	1.83	0.5	430	307	137	739	570	1.593	1.593	1.861	1.6525
270	1.83	0.5	485	341	149	824	624	1.594	1.576	1.861	1.6355
300	1.83	0.5	550	393	167	922	708	1.598	1.580	1.857	1.6095
330	1.83	0.5	550	430	185	922	764	1.598	1.580	1.855	1.5910
350	1.83	0.5	550	430	198	922	764	1.598	1.580	1.855	1.5910
385	1.83	0.5	550	430	220	922	764	1.598	1.580	1.855	1.5910
4th Gen Intel® Xeon® Processor Scalable Family, Codename Sapphire Rapids + HMB SKUs
330	1.83	0.5	550	430	185	1009	812	1.598	1.580	1.855	1.5910
350	1.83	0.5	550	430	198	1009	812	1.598	1.580	1.855	1.5910
Sapphire Rapids EE SKUs
85	1.8	0.85	76	66	42	200	184	1.713	1.713	1.872	1.7199
95	1.8	0.85	91	79	48	222	204	1.701	1.701	1.872	1.7089
105	1.8	0.85	106	92	54	244	225	1.688	1.688	1.871	1.6978
110	1.8	0.85	119	102	59	265	241	1.677	1.677	1.871	1.6893
120	1.8	0.85	132	112	63	285	257	1.666	1.666	1.870	1.6808
125	1.8	0.85	141	119	66	298	267	1.658	1.658	1.870	1.6749
135	1.8	0.85	160	132	72	327	289	1.642	1.642	1.870	1.6638
140	1.8	0.85	170	139	75	343	300	1.634	1.634	1.869	1.6579
145	1.8	0.85	180	146	78	358	311	1.625	1.625	1.869	1.6519
150	1.8	0.85	190	153	81	373	323	1.617	1.617	1.869	1.6460
155	1.8	0.85	201	160	84	389	334	1.607	1.607	1.868	1.6400
160	1.8	0.85	212	168	87	406	346	1.598	1.598	1.867	1.6332
165	1.8	0.85	222	175	90	422	357	1.589	1.589	1.867	1.6273
185	1.8	0.85	266	204	102	490	405	1.572	1.556	1.866	1.6026
195	1.83	0.85	290	220	108	526	430	1.574	1.556	1.866	1.6190
205	1.83	0.85	314	235	113	562	454	1.574	1.556	1.865	1.6063
215	1.83	0.5	339	251	118	600	479	1.639	1.639	1.864	1.6805
225	1.83	0.5	364	266	122	638	504	1.626	1.626	1.863	1.6730
Sapphire Rapids EE E-Temp SKUs
85	1.8	0.85	87	77	56	210	197	1.704	1.704	1.872	1.7106
95	1.8	0.85	106	93	63	239	219	1.687	1.687	1.871	1.6970
105	1.8	0.85	125	108	70	268	243	1.671	1.671	1.870	1.6842
110	1.8	0.85	140	120	75	291	260	1.659	1.659	1.870	1.6740
120	1.8	0.85	155	132	79	314	277	1.646	1.646	1.870	1.6638
125	1.8	0.85	165	139	83	329	289	1.638	1.638	1.869	1.6579
135	1.8	0.85	186	153	89	361	312	1.620	1.620	1.869	1.6460
140	1.8	0.85	195	160	91	376	324	1.612	1.612	1.868	1.6400
145	1.8	0.85	205	166	95	393	337	1.604	1.604	1.868	1.6349
150	1.8	0.85	215	173	98	409	349	1.595	1.595	1.867	1.6290
155	1.8	0.85	225	180	101	425	361	1.587	1.587	1.867	1.6230
160	1.8	0.85	236	187	104	442	373	1.577	1.577	1.866	1.6171
165	1.8	0.85	246	193	106	458	385	1.569	1.569	1.866	1.6120
185	1.8	0.85	286	216	116	526	435	1.568	1.552	1.865	1.5924
195	1.83	0.85	306	228	121	561	459	1.568	1.552	1.865	1.6122
205	1.83	0.5	343	253	132	596	485	1.636	1.636	1.865	1.6795
215	1.83	0.5	364	264	137	632	510	1.626	1.626	1.864	1.6740
225	1.83	0.5	404	292	148	668	536	1.606	1.606	1.864	1.6600
Power Parameter Definitions
Power Parameter Name				Definition					Notes
TDP				Thermal Design Power of the CPU.					The target power level CPU thermal solution should be designed to.
PL1				CPU Socket RAPL: Default Package Power Limit 1.					The default setting and the upper limit setting= TDP, set in MSR 610h.
VccIN_VID				The Nominal VID During Normal Operation.
VCCIN_R_LL				DC and AC Load Line, also known as AVP, Required.					The Platform R_LL setting should be based on the highest TDP SKUs supported by the platform.
IccIN_Max				Max Current Corresponds to CPU PMax.
IccIN_Max.app				Current Corresponds to CPU PMax.app.
IccIN_PL1				Thermal Design Current Corresponds to CPU PL1 default Value.
PMax				Instantaneous max CPU package power at virus condition.
PMax.app				Instantaneous max CPU package power at the worst case real application condition.
VCCIN 2^nd Droop Vmin				The minimum Vmin during the rising edge of the transient current up to IccIN_Max, caused mainly by the Rpath and inductance of socket and board addressed by cavity caps.					Required for Fast Vmode validation with the current up to IccIN_Max.
VCCIN 3^rd Droop Vmin				The minimum Vmin at IccIN_Max level, addressed mainly by a mix of board caps in the cavity on top and bottom, the edge caps and VR tuning.					Required for Fast Vmode validation with the current up to IccIN_Max.
VCCIN_VOvS_MAX				Maximum Overshoot voltage for the first 25 µs due to Load Transient release. After 25 µs, Vmax should meet AVP regulation (VccIN_VID-VCCIN_R_LL × Current + 22 mV).					Required for Transient 3D validation with the current up to IccIN_Max.app.
Vtrip (V)				The fused PMax Detector Voltage Trip Level.					Calculated as: VccIN_VID-VCCIN_R_LL × IccIN_Max.app - 22 mV - 2 mV.

Notes:

All 4th Gen Intel® Xeon® Processor Scalable Family, Codename Sapphire Rapids + HBM and 5th Gen Intel® Xeon® Processor Scalable Family, Codename Emerald Rapids SKU numbers listed here were from pre-Si projection and subject to change.

The voltage specification requirements are measured across the Gen5 VRTT test points. Voltage measurement should be taken with a DC to 20 MHz bandwidth (BW) oscilloscope limit (or DC to 100 MHz if 20 MHz BW oscilloscopes is not available), using a 1.5 pF maximum probe capacitance, and 1 MΩ minimum impedance. The maximum length of the ground wire on the probe should be less than 5 mm to ensure external noise from the system is not coupled in the scope probe.

The processor should not be subjected to any static VCCIN level that exceeds the VCCIN_MAX (VccIN_VID-VCCIN_R_LL × Current + 22 mV) associated with any particular current. Failure to adhere to this specification can shorten processor lifetime.

Minimum VCCIN and maximum ICCIN are specified at the maximum processor case temperature (TCASE). ICCIN_MAX is specified at the relative VCC_MIN point on the VCCIN load line.

VCCIN has a Vboot setting of 1.8V.

Other Processor Power Rail Current and Voltage Specifications for all 4th Gen Intel® Xeon® Processor Scalable Family, Codename Sapphire Rapids

Power Parameters	VCCINFAON	VCCFA_EHV	VCCFA_EHV_FIVRA	VCCD_HV	VCCVNN	VPP_HBM	3V3_AUX
Nominal Voltage =	1.0V	1.8V	1.8V	1.1V	1.0V	N/A	3.3V
TDC	42A	5A	SPR: 44A Future drop-in processor: 48A	SPR: 23A Future Drop-In processor: 26A	0.02A	N/A	0.4A
ICCMAX	46A	6.25A	SPR: 48Apk Future drop-in processor: 53Apk	SPR: 25Apk Future Drop-In processor: 30 Apk	0.02A	N/A	0.4A
Vmin measured at VRTT test points	0.930V at 1.0 Vnom	1.749V	See Table: VCCFA_EHV_FIVRA Voltage Specs Across 4 Quadrants and Remote Sense With Gen5 VRTT Test Points	SPR: 1.086V; Future Drop-In processor: 1.081V	Rpath from VR output inductor to socket pin at the top layer is recommended = 120 mΩ 0.97 Vmin with calculation	N/A	3.205 Vmin with VRTT validation Rpath at the socket pin is recommended = 83 mΩ. 3.217 Vmin with calculation.
Vmax measured at VRTT test points	1.050V at 1.0 Vnom	1.841V	See Table: VCCFA_EHV_FIVRA Voltage Specs Across 4 Quadrants and Remote Sense With Gen5 VRTT Test Points	SPR: 1.192 V Future Drop-In processor: 1.189V	Rpath from VR output inductor to socket pin at the top layer is recommended = 120 mΩ 1.03 Vmax with calculation	N/A	3.395 Vmax with VRTT validation Rpath at the socket pin is recommended = 83 mΩ. 3.383 Vmax with calculation.
4th Gen Intel® Xeon® Processor Scalable Family, Codename Sapphire Rapids + HBM SKUs
Nominal Voltage =	1.0V	1.8V	1.8V	1.1V	1.0V	2.5V	3.3V
TDC	48A	5A	102A	23A	0.02A	4A	0.4A
ICCMAX	53A	6.25A	136A	25A	0.02A	5A	0.4A
Vmin measured at VRTT test points	0.909V at 1.0 Vnom	1.749V	See Table: VCCFA_EHV_FIVRA Voltage Specs Across 4 Quadrants and Remote Sense With Gen5 VRTT Test Points	1.086V	Rpath from VR output inductor to socket pin at the top layer is recommended = 120 mΩ 0.97 Vmin with calculation	2.530V at 2.5 Vnom	3.205 Vmin with VRTT validation. Rpath at the socket pin is recommended = 83 mΩ. 3.217 Vmin with calculation.
Vmax measured at VRTT test points	1.050V at 1.0 Vnom	1.841V	See Table: VCCFA_EHV_FIVRA Voltage Specs Across 4 Quadrants and Remote Sense With Gen5 VRTT Test Points	1.192V	Rpath from VR output inductor to socket pin at the top layer is recommended = 120 mΩ 1.03 Vmax with calculation	2.708V at 2.5 Vnom	3.395 Vmax with VRTT validation Rpath at the socket pin is recommended = 83 mΩ. 3.383 Vmax with calculation.

Notes:

SPR = 4th Gen Intel® Xeon® Processor Scalable Family, Codename Sapphire Rapids.

All 4th Gen Intel® Xeon® Processor Scalable Family, Codename Sapphire Rapids + HBM and 5th Gen Intel® Xeon® Processor Scalable Family, Codename Emerald Rapids SKU numbers listed here were from pre-Si projection and subject to change.

The voltage specification requirements are measured across the Gen5 VRTT test points. Voltage measurement should be taken with a DC to 20 MHz bandwidth (BW) oscilloscope limit (or DC to 100 MHz if 20 MHz BW oscilloscopes is not available), using a 1.5 pF maximum probe capacitance, and 1 MΩ minimum impedance. The maximum length of the ground wire on the probe should be less than 5 mm to ensure external noise from the system is not coupled in the scope probe.

PVNN_MAIN current on CPU side is 20 mA and too small to be tested with the black interposer. Measured the voltage at its VR output side, do Rpath simulation and calculate the Vmax/Vmin per: 1.0×(1+/-DC tolerance%) ±1/2 x Ripple pk-pk - Rpath x 0.02 and Vmax/Vmin spec is 1.03V/0.97V.

Vmin and Vmax voltage includes: DC + AC + Ripple.

VCCFA_EHV_FIVRA Voltage Specs Across 4 Quadrants and Remote Sense With Gen5 VRTT Test Points

Interposer Rails	Vmin	Vmax
For 4th Gen Intel® Xeon® Processor Scalable Family, Codename Sapphire Rapids Non-HBM SKUs
VCCFA_EHV_FIVRA_NW	1.738V	1.864V
VCCFA_EHV_FIVRA_NE	1.704V	1.857V
VCCFA_EHV_FIVRA_SW	1.729V	1.865V
VCCFA_EHV_FIVRA_SE	1.713V	1.860V
VCCFA_EHV_FIVRA_RS	1.722V	1.862V
For Future Drop-In Non-HBM SKUs
VCCFA_EHV_FIVRA_NW	1.739V	1.871V
VCCFA_EHV_FIVRA_NE	1.702V	1.859V
VCCFA_EHV_FIVRA_SW	1.730V	1.871V
VCCFA_EHV_FIVRA_SE	1.712V	1.864V
VCCFA_EHV_FIVRA_RS	1.720V	1.864V
For 4th Gen Intel® Xeon® Processor Scalable Family, Codename Sapphire Rapids + HBM SKUs
VCCFA_EHV_FIVRA_NW	1.663V	1.866V
VCCFA_EHV_FIVRA_NE	1.660V	1.858V
VCCFA_EHV_FIVRA_SW	1.691V	1.844V
VCCFA_EHV_FIVRA_SE	1.685V	1.838V
VCCFA_EHV_FIVRA_RS	1.669V	1.831V

Note:All non-HBM Vmax/Vmin spec data is based on simulation with Fishhawk Falls 12L board and reduced caps, and all numbers listed here were from pre-Si projection and subject to change. All 4th Gen Intel® Xeon® Processor Scalable Family, Codename Sapphire Rapids + HBM and 5th Gen Intel® Xeon® Processor Scalable Family, Codename Emerald Rapids SKU numbers listed here were from pre-Si projection and subject to change.

Eagle Stream Platform

Data Sheet

Voltage and Current Specifications

The VCCIN Rail Current and Voltage Specifications for 4th Gen Intel® Xeon® Processor Scalable Family, Codename Sapphire Rapids

Other Processor Power Rail Current and Voltage Specifications for all 4th Gen Intel® Xeon® Processor Scalable Family, Codename Sapphire Rapids

VCCFA_​EHV_​FIVRA Voltage Specs Across 4 Quadrants and Remote Sense With Gen5 VRTT Test Points

VCCFA_EHV_FIVRA Voltage Specs Across 4 Quadrants and Remote Sense With Gen5 VRTT Test Points