Thermal Specifications and Design Guidelines
Intel
®
Xeon
®
Phi™ Processor x200 Product Family TMSDG
Order Number: 334785-002
42
6
Thermal Specifications and
Design Guidelines
6.1
Thermal Specification Overview
The processor is a Multi-Chip Package (MCP), meaning it has integrated multiple silicon
devices onto the processor substrate. These devices include the processor (CPU) die,
eight Multi-Chip DRAMs (MCDRAMs) and, in some configurations, a networking (or
fabric) controller die. See
. Although there are multiple
components on the processor package, there will be a single Integrated Heat Spreader
(IHS) on the MCP which serves as an interface to the system thermal solution.
The MCP requires the thermal solution to maintain die temperatures within the
specified operating limits for all devices in the MCP. Any attempt to operate the
processor or other die outside these limits may result in permanent damage to the
processor and potentially other components within the system. Maintaining the proper
thermal environment is key to optimal and reliable, long-term processor and system
operation.
A complete thermal solution includes both component- and system-level thermal
management features. Component-level thermal solutions can include active or passive
heatsinks attached to the processors’ IHS. Typical system-level thermal solutions may
consist of system fans combined with ducting and venting.
6.1.1
Thermal Design Power (TDP) and T
CASE
Specifications
and
list the Thermal Design Power (TDP) and T
CASE
values for the
different processor SKUs, under both CPU- and memory-centric workloads.
Table 6-1.
TDP and T
CASE
Specifications - 215W/230W SKUs
Processor
Processor with Fabric
Workload
CPU Centric
Memory Centric
CPU Centric
Memory Centric
CPU Power
185W
147W
185W
147W
Memory Power
30W
68W
30W
68W
IOP Fabric Die Power
N/A
15W
Total Power
215W
230W
CPU Die Maximum T
CASE
82
°
C
N/A
1
84
°
C
N/A
1
MCDRAM Die Maximum T
CASE
N/A
2
72 °C
N/A
2
75 °C
Fabric Die Maximum T
CASE
N/A
N/A
3
Minimum T
CASE
4
5
°
C
.
Notes:
1.
Memory-centric workloads: CPU T
CASE
is expected to be lower than the maximum CPU T
CASE
target.
2.
CPU-centric workloads: Memory T
CASE
is expected to be lower than the maximum memory T
CASE
target.
3.
Fabric die T
CASE
targets: The fabric die is expected to remain below it’s maximum allowable temperature for
all workloads, as long as the thermal solution provides adequate cooling to the CPU and MCDRAM die.
4.
ASHRAE thermal envelopes allow scenarios where the data center ambient temperature may drop below
5
°
C, down to 0
°
C. However, the processor silicon temperatures are expected to quickly rise above 5
°
C
once operational. Contact your Intel representative if you believe your data center implementation
warrants further consideration of minimum operational temperatures down to 0
°
C.