SPEC CPU2017 Platform Settings for Supermicro Systems

Firmware / BIOS / Microcode Settings

Determinism Slider:
This BIOS option allows for Enable/Disable AGESA determinism to control performance. AGESA is an acronym for "AMD Generic Encapsulated Software Architecture." AGESA is a bootstrap protocol by which system devices on AMD64-architecture mainboards are initialized, it responsible for the initialization of the processor cores, memory, and the HyperTransport controller. Available settings are:
cTDP Control:
This BIOS option is for "Configurable TDP (cTDP)", it allows user can set customized value for TDP. Available settings are:
TDP is an acronym for “Thermal Design Power.” TDP is the recommended target for power used when designing the cooling capacity for a server. EPYC processors are able to control this target power consumption within certain limits. This capability is referred to as “configurable TDP” or "cTDP." cTDP can be used to reduce power consumption for greater efficiency, or in some cases, increase power consumption above the default value to provide additional performance. cTDP is controlled using a BIOS option.

The default EPYC cTDP value corresponds with the microprocessor’s nominal TDP. For the EPYC 7601, the default value is 180W. The default cTDP value is set at a good balance between performance and energy efficiency. The EPYC 7601 cTDP can be reduced as low as 165W, which will minimize the power consumption for the processor under load, but at the expense of peak performance. Increasing the EPYC 7601 cTDP to 200W will maximize peak performance by allowing the CPU to maintain higher dynamic clock speeds, but will make the microprocessor less energy efficient. Note that at maximum cTDP, the CPU thermal solution must be capable of dissipating at least 200W or the EPYC 7601 processor might engage in thermal throttling under load.

The available cTDP ranges for each EPYC model are in the table below:
ModelNominal TDP Minimum cTDP Maximum cTDP**
EPYC 7601180W 165W 200W
EPYC 7551180W 165W 200W
EPYC 7501155/170W 135W 155/170W*
EPYC 7451180W 165W 200W
EPYC 7401155/170W 135W 155/170W*
EPYC 7351155/170W 135W 155/170W*
EPYC 7301155/170W 135W 155/170W*
EPYC 7281155/170W 135W 155/170W*
EPYC 7251120W 105W 120W
*Max TDP is 170W when DDR4 is operating at 2667 MT/sec, or 155W when DDR4 is operating at lower frequencies.
** cTDP must remain below the thermal solution design parameters or thermal throttling could be frequently encountered.