Intel® Xeon® Processor E5-1600/E5-2600/E5-4600 Product Families 169
Datasheet Volume One
Electrical Specifications
7.8.1 Voltage and Current Specifications
Notes:
1. Unless otherwise noted, all specifications in this table apply to all processors. These specifications are based on final silicon
characterization.
2. Individual processor VID values may be calibrated during manufacturing such that two devices at the same speed may have
different settings.
3. These voltages are targets only. A variable voltage source should exist on systems in the event that a different voltage is
required.
4. The VCC voltage specification requirements are measured across the remote sense pin pairs (VCC_SENSE and
VSS_VCC_SENSE) on the processor package. Voltage measurement should be taken with a DC to 100 MHz bandwidth
oscilloscope limit (or DC to 20 MHz for older model oscilloscopes), using a 1.5 pF maximum probe capacitance, and 1MΩ
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.
5. The VTTA, and VTTD voltage specification requirements are measured across the remote sense pin pairs (VTTD_SENSE and
VSS_VTTD_SENSE) on the processor package. Voltage measurement should be taken with a DC to 100 MHz bandwidth
oscilloscope limit (or DC to 20 MHz for older model oscilloscopes), using a 1.5 pF maximum probe capacitance, and 1MΩ
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.
6. The VSA voltage specification requirements are measured across the remote sense pin pairs (VSA_SENSE and
VSS_VSA_SENSE) on the processor package. Voltage measurement should be taken with a DC to 100 MHz bandwidth
oscilloscope limit (or DC to 20 MHz for older model oscilloscopes), using a 1.5 pF maximum probe capacitance, and 1MΩ
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.
7. For the 8/6-core processor refer to Table 7 -13 and corresponding Figure 7-3. For the 4/2-core processor refer to Tab le 7-1 4
and corresponding Figure7-4.The processor should not be subjected to any static VCC level that exceeds the VCC_MAX
associated with any particular current. Failure to adhere to this specification can shorten processor lifetime.
8. Minimum VCC and maximum ICC are specified at the maximum processor case temperature (TCASE) shown in Section5,
“Thermal Management Specifications”. ICC_MAX is specified at the relative VCC_MAX point on the VCC load line. The processor is
capable of drawing ICC_MAX for up to 5 seconds. Refer to Figure7-5 for further details on the average processor current draw
over various time durations.
9. The processor should not be subjected to any static VTTA, VTTD level that exceeds the VTT_MAX associated with any particular
current. Failure to adhere to this specification can shorten processor lifetime.
10. This specification represents the VCC reduction or VCC increase due to each VID transition, see Section7.1.9.3, “Voltage
Identification (VID)”.
11. Baseboard bandwidth is limited to 20 MHz.
12. FMB is the flexible motherboard guidelines. See Section7.6 for FMB details.
13. DC + AC + Ripple = Total Tolerance
14. For Power State Functions see Section7.1.9.3.5.
15. VSA_VID does not have a loadline, the output voltage is expected to be the VID value.

Table 7-11. Voltage Specification

Symbol Parameter Voltage
Plane Min Typ Max Unit Notes1
VCC VID VCC VID Range 0.6 1.35 V 2, 3
VCC Core Voltage
(Launch - FMB)
VCC See Table 7 -13, Ta ble 7- 14 and Figure 7-3, Figure 7-4 V 3, 4, 7, 8,
12, 14, 18
VVID_STEP
(Vcc, Vsa,
Vccd)
VID step size during
a transition 5.0 mV 10
VCCPLL PLL Voltage VCCPLL 0.955*VCCPLL_TYP 1.8 1.045*VCCPLL_TYP V 11, 12, 13,
17
VCCD
(VCCD_01,
VCCD_23)
I/O Voltage for DDR3
(Standard Voltage) VCCD 0.95*VCCD_TYP 1.5 1.05*VCCD_TYP V 11, 13, 14,
16, 17
VCCD
(VCCD_01.
VCCD_23)
I/O Voltage for
DDR3L (Low Voltage) VCCD 0.95*VCCD_TYP 1.35 1.075*VCCD_TYP V 11, 13, 14,
16, 17
VTT (VTTA,
VTTD)
Uncore Voltage
(Launch - FMB) VTT 0.957*VTT_TYP 1.05 1.043*VTT_TYP V 3, 5, 9, 12,
13
VSA_VID Vsa VID Range VSA 0.6 0.965 1.20 V 2, 3, 14, 15
VSA System Agent
Voltage
(Launch - FMB)
VSA VSA_VID - 0.064 VSA_VID V
SA_VID + 0.064 V 3, 6, 12, 14,
19