SPECpower_ssj2008 Copyright (C) 2007-2026 Standard Performance Evaluation Corporation Dell Inc. PowerEdge XR8720t (Intel Xeon 6776P-B) SPECpower_ssj2008 = 21,433 overall ssj_ops/watt Test Sponsor: Dell Inc. SPEC License #: 6573 Tested By: Dell Inc. Test Location: Round Rock, TX, USA Test Date: Apr 9, 2026 Publication: May 12, 2026 Hardware Availability: Mar-2026 Software Availability: Mar-2026 Test Method: Single Node System Source: Single Supplier System Designation: Server Power Provisioning: Line-powered Benchmark Results Summary Performance | Power | Performance | | to Power | | Ratio Target Load | Actual Load | ssj_ops | Average | | | | Active Power | | | | (W) | ------------- | ------------- | ------------- | ------------- | ------------- 100% | 99.8% | 10,984,179 | 454 | 24,181 90% | 89.9% | 9,897,102 | 414 | 23,931 80% | 79.9% | 8,796,557 | 358 | 24,576 70% | 70.0% | 7,702,255 | 303 | 25,452 60% | 59.9% | 6,596,570 | 262 | 25,204 50% | 50.1% | 5,508,437 | 228 | 24,181 40% | 40.0% | 4,404,871 | 199 | 22,109 30% | 30.0% | 3,300,064 | 177 | 18,679 20% | 20.0% | 2,201,585 | 158 | 13,897 10% | 10.0% | 1,098,349 | 141 | 7,767 Active Idle | 0 | 129 | 0 sum of ssj_ops / sum of power = | 21,433 System Under Test Set: 'sut' Set Identifier: sut Set Description: System Under Test # of Identical Nodes: 1 Comment: PowerEdge XR8720t HARDWARE Hardware Vendor: Dell Inc. Model: PowerEdge XR8720t (Intel Xeon 6776P-B) Form Factor: 2U CPU Name: Intel Xeon 6776P-B CPU Characteristics: 72 core, 2300 MHz, 288 MB L3 Cache, Max frequency 3500 MHz CPU Frequency (MHz): 2300 CPU(s) Enabled: 72 cores, 1 chip, 72 cores/chip Hardware Threads: 144 (2 / core) CPU(s) Orderable: 1 chip Primary Cache: 64 KB I + 48 KB D on chip per core Secondary Cache: 2 MB I+D on chip per core Tertiary Cache: 288 MB I+D on chip per chip Other Cache: None Memory Amount (GB): 256 # and size of DIMM: 8 x 32 GB Memory Details: 32 GB 2Rx8 PC5-6400B-R, slots A1 A2 A3 A4 A5 A6 A7 A8 populated. Power Supply Quantity and Rating 1 x 1800 (W): Power Supply Details: 1 x 1800W Titanium Efficiency (SKU: 450-BCXB) Disk Drive: 1 x 960 GB NVMe M.2 SSD Disk Controller: Integrated PCIe Controller # and type of Network Interface 1 x Intel Ethernet Connection E825-C for Cards (NICs) Installed: QSFP (rev 04) NICs Enabled in Firmware / OS / 2/2/2 Connected: Network Speed (Mbit): 10000 Keyboard: None Mouse: None Monitor: None Optical Drives: No Other Hardware: None SOFTWARE Power Management: System DBPM (DAPC) enabled in BIOS; operating system used default power management settings with no explicit power mode or tuned profile configured. Operating System (OS): Red Hat Enterprise Linux 10.0 (Coughlan) OS Version: 6.12.0-55.9.1.el10_0.x86_64 Filesystem: xfs JVM Vendor: Oracle JVM Version: Java HotSpot(TM) 64-Bit Server VM(build 17.0.11+7-LTS-207, mixed mode) JVM Command-line Options: -server -Xms1024m -Xmx1024m -Xmn800m -XX:+UseParallelGC -XX:ParallelGCThreads=2 -XX:+UseLargePages -XX:LargePageSizeInBytes=2m -XX:+UseBiasedLocking -XX:InlineSmallCode=1500 -XX:UseAVX=1 -XX:AutoBoxCacheMax=20000 -XX:+OptimizeFill -XX:+AggressiveHeap JVM Affinity: for each physicalCore { numactl -C physicalCoreId, physicalCoreId + 64} JVM Instances: 72 JVM Initial Heap (MB): 1024 JVM Maximum Heap (MB): 1024 JVM Address Bits: 64 Boot Firmware Version: 1.1.3 Management Firmware Version: 1.30.10.50 Workload Version: SSJ 1.2.10 Director Location: Controller Other Software: None Boot Firmware Settings * Virtualization Technology=Disabled * Adjacent Cache Line Prefetch=Disabled * Hardware Prefetcher=Disabled * DCU Streamer Prefetcher=Disabled * Virtual NUMA=Enabled * Virtual NUMA Nodes=6 * Sub NUMA Cluster=Enabled * System Profile=Custom * C1E=Disabled * C-States=Disabled * Energy Efficient Policy=Energy Efficient Management Firmware Settings Enabled (see SUT notes) System Under Test Notes * Each JVM instance was bound to 2 logical processors * SPECpower_ssj.props input.load_level.number_warehouses set to 144 * The system ROM for this result contains microcode version 0x01000303 for Intel Xeon 6776P-B Controller System HARDWARE Hardware Vendor: Dell Inc Model: PowerEdge R650xs CPU Description: 2 x Intel Xeon Gold 5315Y, 3.20 GHz Memory amount (GB): 512 SOFTWARE Operating System (OS): Microsoft Windows Server 2022 Standard JVM Vendor: Oracle Corporation JVM Version: Java Development Kit 15.0.2 CCS Version: 1.2.6 Measurement Devices POWER ANALYZER PWR1 Hardware Vendor: Yokogawa Meters and Instruments Corporation Model: WT310 Serial Number: T11733387 Connectivity: RS-232 Input Connection: Default Metrology Institute: NIST Accredited by: TesCom Calibration Label: T126625 Date of Calibration: 13-Aug-2025 PTDaemon Host System: same as CCS PTDaemon Host OS: same as CCS PTDaemon Version: 1.11.3-a7835373-20251015 Setup Description: Connected to power supply TEMPERATURE SENSOR TEMP1 Hardware Vendor: Digi International Inc. Model: Watchport/H Driver Version: 5.10.26.0 Connectivity: USB PTDaemon Host System: same as CCS PTDaemon Host OS: same as CCS Setup Description: 25 mm in front of SUT main airflow intake Notes None Aggregate Electrical and Environmental Data Target Load | Average | Minimum | Active | Ambient | Power (W) | Temperature | | (Degrees C) ----------- | ---------- | ------------- 100% | 454 | 23.2 90% | 414 | 23.2 80% | 358 | 23.2 70% | 303 | 23.3 60% | 262 | 23.4 50% | 228 | 23.4 40% | 199 | 23.3 30% | 177 | 23.4 20% | 158 | 23.4 10% | 141 | 23.5 Active Idle | 129 | 23.5 Line Standard | Minimum | Elevation (m) | Temperature | | (Degrees C) | ------------------------- | --------------- | --------------- 208V / 60 Hz / 1 phase / | 23.2 | 255 2 wires | | See the Power/Temperature Details Report (power_ssj2008-20260409-01569-power.txt) for additional details. Aggregate Performance Data Target Load | Actual Load | ssj_ops | | Target | Actual ----------------- | ----------------- | ----------------- | ----------------- Calibration 1 | | | 11,170,196 Calibration 2 | | | 11,015,698 Calibration 3 | | | 10,993,089 ssj_ops@calibrated=11,004,394 100% | 99.8% | 11,004,394 | 10,984,179 90% | 89.9% | 9,903,954 | 9,897,102 80% | 79.9% | 8,803,515 | 8,796,557 70% | 70.0% | 7,703,075 | 7,702,255 60% | 59.9% | 6,602,636 | 6,596,570 50% | 50.1% | 5,502,197 | 5,508,437 40% | 40.0% | 4,401,757 | 4,404,871 30% | 30.0% | 3,301,318 | 3,300,064 20% | 20.0% | 2,200,879 | 2,201,585 10% | 10.0% | 1,100,439 | 1,098,349 Active Idle | | 0 | 0 See the Host Performance Report (power_ssj2008-20260409-01569.P404206-XR8720t.txt) for additional details. Copyright (C) 2007-2026 Standard Performance Evaluation Corporation http://www.spec.org - info@spec.org SPECpower_ssj2008 Reporter Version: [SSJ 1.2.10, May 9, 2012]