| Dell Inc. PowerEdge XR8720t (Intel Xeon 6716P-B) | SPECpower_ssj2008 = 17,889 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: | Feb 25, 2026 |
| Hardware Availability: | Jan-2026 | Software Availability: | Nov-2025 | Publication: | Mar 24, 2026 |
| System Source: | Single Supplier | System Designation: | Server | Power Provisioning: | Line-powered |
| Performance | Power | Performance to Power Ratio | ||
|---|---|---|---|---|
| Target Load | Actual Load | ssj_ops | Average Active Power (W) | |
| 100% | 99.8% | 6,149,456 | 283 | 21,743 |
| 90% | 90.1% | 5,549,000 | 264 | 21,054 |
| 80% | 80.0% | 4,931,812 | 220 | 22,428 |
| 70% | 70.1% | 4,317,807 | 195 | 22,186 |
| 60% | 60.0% | 3,699,349 | 175 | 21,161 |
| 50% | 50.0% | 3,079,044 | 157 | 19,554 |
| 40% | 40.1% | 2,470,264 | 143 | 17,334 |
| 30% | 30.0% | 1,850,129 | 130 | 14,266 |
| 20% | 20.1% | 1,236,245 | 119 | 10,432 |
| 10% | 10.0% | 616,123 | 107 | 5,735 |
| Active Idle | 0 | 104 | 0 | |
| ∑ssj_ops / ∑power = | 17,889 | |||
| 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 6716P-B) |
| Form Factor: | 2U |
| CPU Name: | Intel Xeon 6716P-B 2.5 GHz |
| CPU Characteristics: | 40 core, 2.5 GHz, 160 MB L3 Cache, Max Boost Clock up to 3.5 GHz |
| CPU Frequency (MHz): | 2500 |
| CPU(s) Enabled: | 40 cores, 1 chip, 40 cores/chip |
| Hardware Threads: | 80 (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: | 160 MB I+D on chip per chip |
| Other Cache: | None |
| Memory Amount (GB): | 128 |
| # and size of DIMM: | 4 x 32 GB |
| Memory Details: | 32 GB 2Rx4 PC5-6400-R running at 6400MHz Slots A5-8 populated. |
| Power Supply Quantity and Rating (W): | 1 x 1800 |
| Power Supply Details: | 1 x 1800W Titanium Efficiency (SKU: 450-BCXB) |
| Disk Drive: | 1 x 480 GB NVMe Gen4 M.2 SSD |
| Disk Controller: | Integrated PCIe Controller |
| # and type of Network Interface Cards (NICs) Installed: | 1 x Intel(R) Ethernet Connection E825-C |
| NICs Enabled in Firmware / OS / Connected: | 8/8/2 |
| Network Speed (Mbit): | 10000 |
| Keyboard: | None |
| Mouse: | None |
| Monitor: | None |
| Optical Drives: | No |
| Other Hardware: | None |
| Software | |
|---|---|
| Power Management: | Enabled (see SUT notes) |
| Operating System (OS): | SUSE Linux Enterprise Server 16.0 |
| OS Version: | 6.12.0-160000.5-default |
| 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 + 40} |
| JVM Instances: | 40 |
| JVM Initial Heap (MB): | 1024 |
| JVM Maximum Heap (MB): | 1024 |
| JVM Address Bits: | 64 |
| Boot Firmware Version: | 1.0.4 |
| Management Firmware Version: | 1.30.05.10 A00 |
| Workload Version: | SSJ 1.2.10 |
| Director Location: | Controller |
| Other Software: | None |
| 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 |
| 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 |
| Target Load | Average Active Power (W) | Minimum Ambient Temperature (°C) |
|---|---|---|
| 100% | 283 | 20.9 |
| 90% | 264 | 20.9 |
| 80% | 220 | 20.9 |
| 70% | 195 | 21.0 |
| 60% | 175 | 21.0 |
| 50% | 157 | 21.0 |
| 40% | 143 | 21.0 |
| 30% | 130 | 21.0 |
| 20% | 119 | 21.1 |
| 10% | 107 | 21.1 |
| Active Idle | 104 | 21.1 |
| Line Standard | Minimum Temperature (°C) | Elevation (m) |
|---|---|---|
| 208V / 60 Hz / 1 phase / 2 wires | 20.9 | 255 |
| Target Load | Actual Load | ssj_ops | |
|---|---|---|---|
| Target | Actual | ||
| Calibration 1 | 6,254,502 | ||
| Calibration 2 | 6,168,566 | ||
| Calibration 3 | 6,154,782 | ||
| ssj_ops@calibrated=6,161,674 | |||
| 100% | 99.8% | 6,161,674 | 6,149,456 |
| 90% | 90.1% | 5,545,507 | 5,549,000 |
| 80% | 80.0% | 4,929,339 | 4,931,812 |
| 70% | 70.1% | 4,313,172 | 4,317,807 |
| 60% | 60.0% | 3,697,004 | 3,699,349 |
| 50% | 50.0% | 3,080,837 | 3,079,044 |
| 40% | 40.1% | 2,464,670 | 2,470,264 |
| 30% | 30.0% | 1,848,502 | 1,850,129 |
| 20% | 20.1% | 1,232,335 | 1,236,245 |
| 10% | 10.0% | 616,167 | 616,123 |
| Active Idle | 0 | 0 | |