Dell Inc. PowerEdge R770 SPECpower_ssj2008 = 21,232 overall ssj_ops/watt
Test Sponsor: Dell Inc. SPEC License #: 6573 Test Method: Single Node
Tested By: Dell Inc. Test Location: Round Rock, TX, USA Test Date: Mar 5, 2025
Hardware Availability: Mar-2025 Software Availability: Oct-2024 Publication: Mar 26, 2025
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% 99.7% 24,658,201 960 25,690
90% 90.0% 22,262,550 950 23,441
80% 80.0% 19,792,528 816 24,260
70% 70.0% 17,320,189 701 24,722
60% 60.0% 14,837,018 628 23,640
50% 50.1% 12,386,302 553 22,403
40% 40.0% 9,896,169 501 19,750
30% 30.0% 7,428,967 442 16,820
20% 20.0% 4,942,417 383 12,902
10% 10.0% 2,473,088 309 8,015
Active Idle 0 164 0
∑ssj_ops / ∑power = 21,232
Graph of results
System Under Test
Set: 'sut'
Set Identifier: sut
Set Description: System Under Test
# of Identical Nodes: 1
Comment: SUT
Hardware
Hardware Vendor: Dell Inc.
Model: PowerEdge R770
Form Factor: 2U
CPU Name: Intel Xeon 6787P 2.0 GHz (Intel Turbo Boost Technology up to 3.80 GHz)
CPU Characteristics: 86-Core, 2.00 GHz, 336MB L3 Cache
CPU Frequency (MHz): 2000
CPU(s) Enabled: 172 cores, 2 chips, 86 cores/chip
Hardware Threads: 344 (2 / core)
CPU(s) Orderable: 1,2 chips
Primary Cache: 32 KB I + 48 KB D on chip per core
Secondary Cache: 2 MB I+D on chip per core
Tertiary Cache: 336 MB I+D on chip per chip
Other Cache: None
Memory Amount (GB): 512
# and size of DIMM: 16 x 32 GB
Memory Details: 32GB 1Rx4 PC5-6400; slots Slots A1-8, B1-B8 populated.
Power Supply Quantity and Rating (W): 1 x 1500
Power Supply Details: 1500W 60mm Titanium - mixed mode, Dell p/n GRD17
Disk Drive: 1 x Dell EC NVMe ISE 7450 RI M.2 80 480GB, Dell p/n 3H1F4
Disk Controller: BOSS controller card, Dell p/n CMFVP
# and type of Network Interface Cards (NICs) Installed: 1 x 1GbE BT 4P Broadcom OCP 3.0, Dell p/n M2PYY
NICs Enabled in Firmware / OS / Connected: 4/4/1
Network Speed (Mbit): 1000
Keyboard: None
Mouse: None
Monitor: None
Optical Drives: No
Other Hardware: None
Software
Power Management: Enabled (see SUT Notes)
Operating System (OS): Microsoft Windows Server 2022 Standard
OS Version: Version 21H2(OS Build 20348.1251)
Filesystem: NTFS
JVM Vendor: Oracle Corporation
JVM Version: Oracle Java HotSpot(TM) 64-Bit Server VM (build 17.0.13+10-LTS-268, mixed mode)
JVM Command-line Options: -server -Xms1300m -Xmx1300m -Xmn1100m -XX:+UseBiasedLocking -XX:+UseParallelGC -XX:ParallelGCThreads=2 -XX:+UseLargePages -XX:LargePageSizeInBytes=2m -XX:InlineSmallCode=1500 -XX:UseAVX=1 -XX:AutoBoxCacheMax=20000 -XX:+OptimizeFill -XX:+AggressiveHeap -XX:FreqInlineSize=2500 -XX:CompileThresholdScaling=220
JVM Affinity: start /NODE [0,2,5,8,10,13,16,18,21,24,26,29] [1,3,4,6,7,9,11,12,14,15,17,19,20,22,23,25,27,28,30,31] /AFFINITY [0x3,0xC,0x30,0xC0,0x300,0xC00][0x3,0xC,0x30,0xC0,0x300]
JVM Instances: 172
JVM Initial Heap (MB): 1300
JVM Maximum Heap (MB): 1300
JVM Address Bits: 64
Boot Firmware Version: 0.5.62
Management Firmware Version: 1.20.25.00
Workload Version: SSJ 1.2.10
Director Location: Controller
Other Software: None
Boot Firmware Settings
Management Firmware Settings
See SUT Notes
System Under Test Notes
Controller System
Hardware
Hardware Vendor: Dell Inc
Model: PowerEdge R450
CPU Description: 2 x Intel Xeon Silver 4310 CPU, 2.10 GHz
Memory amount (GB): 64
Software
Operating System (OS): Microsoft Windows Server 2022 Datacenter
JVM Vendor: Oracle Corporation
JVM Version: Hotspot(TM) Client VM, version 15.0.2+7 (build 15.0.2+7, mixed mode)
CCS Version: 1.2.6
Measurement Devices
Power Analyzer pwr1
Hardware Vendor: Yokogawa Meters and Instruments Corporation
Model: WT310E
Serial Number: T11733387
Connectivity: RS-232
Input Connection: Default
Metrology Institute: NIST
Accredited by: TesCom
Calibration Label: T11733387
Date of Calibration: 24-Jul-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 Active Power (W) Minimum Ambient Temperature (°C)
100% 960 21.2
90% 950 21.2
80% 816 21.2
70% 701 21.2
60% 628 21.2
50% 553 21.2
40% 501 21.2
30% 442 21.2
20% 383 21.2
10% 309 21.2
Active Idle 164 21.2
Line Standard Minimum Temperature (°C) Elevation (m)
208V / 60 Hz / 1 phase / 2 wires 21.2 255
See the Power/Temperature Details Report for additional details.
Aggregate Performance Data
Target Load Actual Load ssj_ops
Target Actual
Calibration 1     25,039,705
Calibration 2     24,735,725
Calibration 3     24,751,026
ssj_ops@calibrated=24,743,376
100% 99.7% 24,743,376 24,658,201
90% 90.0% 22,269,038 22,262,550
80% 80.0% 19,794,701 19,792,528
70% 70.0% 17,320,363 17,320,189
60% 60.0% 14,846,025 14,837,018
50% 50.1% 12,371,688 12,386,302
40% 40.0% 9,897,350 9,896,169
30% 30.0% 7,423,013 7,428,967
20% 20.0% 4,948,675 4,942,417
10% 10.0% 2,474,338 2,473,088
Active Idle   0 0
Graph of results
See the Host Performance Report for additional details.