SPECpower_ssj2008 Copyright (C) 2007-2026 Standard Performance Evaluation Corporation Dell Inc. PowerEdge R770 (Intel Xeon 6737P, 2.9 GHz) SPECpower_ssj2008 = 13,310 overall ssj_ops/watt Test Sponsor: Dell Inc. SPEC License #: 6573 Tested By: Dell Inc. Test Location: Round Rock, TX, USA Test Date: Dec 22, 2025 Publication: Apr 22, 2026 Hardware Availability: May-2025 Software Availability: Jun-2025 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% | 12,416,741 | 783 | 15,864 90% | 89.9% | 11,180,420 | 775 | 14,423 80% | 80.0% | 9,951,616 | 627 | 15,862 70% | 70.0% | 8,710,394 | 531 | 16,418 60% | 60.0% | 7,463,947 | 461 | 16,192 50% | 50.1% | 6,227,122 | 412 | 15,120 40% | 40.0% | 4,977,461 | 374 | 13,316 30% | 30.0% | 3,733,111 | 347 | 10,759 20% | 20.0% | 2,487,662 | 319 | 7,807 10% | 10.0% | 1,243,262 | 294 | 4,232 Active Idle | 0 | 217 | 0 sum of ssj_ops / sum of power = | 13,310 System Under Test Set: 'sut' Set Identifier: sut Set Description: System Under Test # of Identical Nodes: 1 Comment: PowerEdge R770 HARDWARE Hardware Vendor: Dell Inc. Model: PowerEdge R770 (Intel Xeon 6737P, 2.9 GHz) Form Factor: 2U CPU Name: Intel Xeon 6737P 2.9 GHz CPU Characteristics: 32 core, 2.9 GHz, 144 MB L3 Cache, Max Boost Clock up to 4 GHz CPU Frequency (MHz): 2900 CPU(s) Enabled: 64 cores, 2 chips, 32 cores/chip Hardware Threads: 128 (2 / core) CPU(s) Orderable: 1,2 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: 144 MB I+D on chip per chip Other Cache: None Memory Amount (GB): 512 # and size of DIMM: 16 x 32 GB Memory Details: 32 GB 2Rx4 PC5-6400-R running at 6400Hz Slots A1-8, B1-8 populated. Power Supply Quantity and Rating 2 x 1500 (W): Power Supply Details: 1500W Platinum Efficiency Disk Drive: 2 x 447.13 GB NVMe, 4 x 3576.98 GB PCIe SSD Disk Controller: PCIe SSD Backplane, PCIe attached Boot Optimized Storage (BOSS) card # and type of Network Interface 1 x Broadcom NetXtreme Gigabit Ethernet, 1 x Cards (NICs) Installed: Broadcom BCM57414 2x25G OCP Ethernet NIC NICs Enabled in Firmware / OS / 4/4/1 Connected: Network Speed (Mbit): 1000 Keyboard: None Mouse: None Monitor: None Optical Drives: No Other Hardware: None SOFTWARE Power Management: Balanced power plan in OS (see SUT notes) Operating System (OS): Microsoft Windows Server 2022 Standard OS Version: 21H2 (OS Build 20348.4405) Filesystem: NTFS JVM Vendor: Microsoft JVM Version: Java HotSpot(TM) 64-Bit Server VM (build 17.0.14+8-LTS-191, mixed mode, sharing) JVM Command-line Options: -server -Xmn1900m -Xms2048m -Xmx2048m -XX:ParallelGCThreads=2 -XX:+UseLargePages -XX:LargePageSizeInBytes=2m -XX:UseAVX=1 -XX:AutoBoxCacheMax=20000 -XX:+UseParallelGC -XX:+OptimizeFill -XX:+AggressiveHeap -XX:FreqInlineSize=2500 -XX:InlineSmallCode=3900 -XX:+UseBiasedLocking -XX:AllocatePrefetchDistance=256 -XX:AllocatePrefetchLines=8 JVM Affinity: start /NODE [0,1,2,3,4,5,6,7] /AFFINITY [0x3,0xC,0x30,0xC0,0x300,0xC00,0x3000,0xC000 ] JVM Instances: 64 JVM Initial Heap (MB): 2048 JVM Maximum Heap (MB): 2048 JVM Address Bits: 64 Boot Firmware Version: 1.5.4 Management Firmware Version: 1.20.80.00 A00 Workload Version: SSJ 1.2.10 Director Location: Controller Other Software: None Boot Firmware Settings * MADT Core Enumeration set to Linear * Virtual NUMA enabled with Virtual NUMA Nodes set to 4 * System Profile set to Custom * Energy Efficient Policy set to Energy Efficient Management Firmware Settings Minimum Power (Performance per Watt Optimized) System Under Test Notes * Each JVM instance was bound to 2 logical processors * Using the local security settings console, "lock pages in memory" was enabled for the user running the benchmark * Run initiated via Windows Remote Desktop Connection * Hard Disk set to turn off after 1 minute * Display set to turn off after 1 minute * SPECpower_ssj.props input.load_level.number_warehouses set to 128 due to a known inconsistency in processor reporting with this Java version * Power Plan Minimum processor state set to 0% * Power Plan Maximum processor state set to 100% * The System ROM used for this result contains Intel microcode 000000003906002B Version for the Intel Xeon processor Controller System HARDWARE Hardware Vendor: Dell Inc Model: PowerEdge R6515 CPU Description: AMD EPYC 7H12, 2.60 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: T11733384 Connectivity: RS-232 Input Connection: Default Metrology Institute: NIST Accredited by: TesCom Calibration Label: T126624 Date of Calibration: 13-Aug-2025 PTDaemon Host System: same as CCS PTDaemon Host OS: same as CCS PTDaemon Version: 1.11.1-462c978e-20240907 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% | 783 | 25.9 90% | 775 | 26.7 80% | 627 | 26.6 70% | 531 | 26.2 60% | 461 | 26.0 50% | 412 | 25.8 40% | 374 | 25.8 30% | 347 | 25.8 20% | 319 | 25.8 10% | 294 | 25.8 Active Idle | 217 | 25.8 Line Standard | Minimum | Elevation (m) | Temperature | | (Degrees C) | ------------------------- | --------------- | --------------- 208V / 60 Hz / 1 phase / | 25.8 | 255 2 wires | | See the Power/Temperature Details Report (power_ssj2008-20260406-01567-power.txt) for additional details. Aggregate Performance Data Target Load | Actual Load | ssj_ops | | Target | Actual ----------------- | ----------------- | ----------------- | ----------------- Calibration 1 | | | 12,597,482 Calibration 2 | | | 12,448,023 Calibration 3 | | | 12,423,983 ssj_ops@calibrated=12,436,003 100% | 99.8% | 12,436,003 | 12,416,741 90% | 89.9% | 11,192,403 | 11,180,420 80% | 80.0% | 9,948,802 | 9,951,616 70% | 70.0% | 8,705,202 | 8,710,394 60% | 60.0% | 7,461,602 | 7,463,947 50% | 50.1% | 6,218,002 | 6,227,122 40% | 40.0% | 4,974,401 | 4,977,461 30% | 30.0% | 3,730,801 | 3,733,111 20% | 20.0% | 2,487,201 | 2,487,662 10% | 10.0% | 1,243,600 | 1,243,262 Active Idle | | 0 | 0 See the Host Performance Report (power_ssj2008-20260406-01567.SLR6704.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]