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By modifying the processor behavior and its performance levels, power consumption of a processor can be changed altering its TDP at the same time. That way, a processor can operate at higher or lower performance levels, depending on the available cooling capacities and desired power consumption. [11]: 69–72 [12] [13]
Processor manufacturers usually release two power consumption numbers for a CPU: typical thermal power, which is measured under normal load (for instance, AMD's average CPU power) maximum thermal power, which is measured under a worst-case load; For example, the Pentium 4 2.8 GHz has a 68.4 W typical thermal power and 85 W maximum thermal power ...
The power measurement is often the average power used while running the benchmark, but other measures of power usage may be employed (e.g. peak power, idle power). For example, the early UNIVAC I computer performed approximately 0.015 operations per watt-second (performing 1,905 operations per second (OPS), while consuming 125 kW).
This power model is the core technique for Joulemeter. Figure 4 in reference [18] shows the block diagram of Joulemeter where System Resource & Power Tracing module reads the full server CPU, disk and power usage. The VM resource tracking module tracks all the work load using hypervisor counters.
Processor Series nomenclature Code name Production date Features supported (instruction set) Clock rate Socket Fabri-cation TDP Cores (number) Bus speed Cache L1 Cache L2 Cache L3 Overclock capable 4004: N/A N/A 1971 - Nov 15 [clarification needed] N/A 740 kHz DIP 10-micron 2 N/A N/A N/A 8008: N/A N/A 1972 - April good [clarification needed] N ...
The power consumption of the initial PlayStation 3 units, based on 90 nm Cell CPU, ranges from 170–200 W during normal use, despite having a 380 W power supply. [33] The power consumption of newer 40 GB PlayStation 3 units (65 nm process Cell/90 nm RSX), ranges from 120-140 W during normal use. [34] The power consumption of "slim" PlayStation ...
The Pentium G3258 CPU is unlocked despite not having the K-suffix. S – performance-optimized lifestyle (low power with 65 W TDP) T – power-optimized lifestyle (ultra low power with 35–45 W TDP) R – BGA packaging / High-performance GPU (Iris Pro 5200 (GT3e)) X – extreme edition (adjustable CPU ratio with no ratio limit)
When a cooler or quieter mode of operation is desired, this mode specifies a lower TDP and lower guaranteed frequency versus the nominal mode. [35]: 71–72 This is the processor's rated frequency and TDP. [35]: 71–72 When extra cooling is available, this mode specifies a higher TDP and higher guaranteed frequency versus the nominal mode.