m610-vs-m915-memory DELL BIOS set to Max Performance, which hides the P-States, but still allows C-States. No powerd running, no chance for the OS to go to Turbo. Lets see. M610 2x5687 96GB, Kern=native: Processor: Intel Xeon X5687 @ 3.59GHz (16 Cores), Motherboard: Dell PowerEdge M610x, Chipset: Intel 5500 I/O Hub ESI Port, Memory: 96GB, Disk: ATA OCZ VERTEX2 1.35 + DP BACKPLANE 1.07, Graphics: Matrox MGA G200eW WPCM450 OS: FreeBSD, Kernel: 13.1-RELEASE (x86_64), Compiler: Clang 13.0.0, File-System: zfs M610 2x5687 96GB, Kern=native NoPowerD but epp running: Processor: Intel Xeon X5687 @ 3.59GHz (16 Cores), Motherboard: Dell PowerEdge M610x, Chipset: Intel 5500 I/O Hub ESI Port, Memory: 96GB, Disk: ATA OCZ VERTEX2 1.35 + DP BACKPLANE 1.07, Graphics: Matrox MGA G200eW WPCM450 OS: FreeBSD, Kernel: 13.1-RELEASE (x86_64), Compiler: Clang 13.0.0, File-System: zfs M610 2x5687 96GB, Kern=native PowerD TurbosOnly: Processor: Intel Xeon X5687 @ 3.59GHz (16 Cores), Motherboard: Dell PowerEdge M610x, Chipset: Intel 5500 I/O Hub ESI Port, Memory: 96GB, Disk: ATA OCZ VERTEX2 1.35 + DP BACKPLANE 1.07, Graphics: Matrox MGA G200eW WPCM450 OS: FreeBSD, Kernel: 13.1-RELEASE (x86_64), Compiler: Clang 13.0.0, File-System: zfs M610 2x5687 96GB, Kern=native noPowerD DellBIOSMaxPerf: Processor: Intel Xeon X5687 (16 Cores), Motherboard: Dell PowerEdge M610x, Chipset: Intel 5500 I/O Hub ESI Port, Memory: 96GB, Disk: ATA OCZ VERTEX2 1.35 + DP BACKPLANE 1.07, Graphics: Matrox MGA G200eW WPCM450 OS: FreeBSD, Kernel: 13.1-RELEASE (x86_64), Compiler: Clang 13.0.0, File-System: zfs MBW 2018-09-08 Test: Memory Copy - Array Size: 1024 MiB MiB/s > Higher Is Better M610 2x5687 96GB, Kern=native .......................... 4443.33 |=========== M610 2x5687 96GB, Kern=native NoPowerD but epp running . 5468.25 |============= M610 2x5687 96GB, Kern=native PowerD TurbosOnly ........ 4824.19 |=========== M610 2x5687 96GB, Kern=native noPowerD DellBIOSMaxPerf . 5249.07 |============ MBW 2018-09-08 Test: Memory Copy, Fixed Block Size - Array Size: 1024 MiB MiB/s > Higher Is Better M610 2x5687 96GB, Kern=native .......................... 4533.92 |=========== M610 2x5687 96GB, Kern=native NoPowerD but epp running . 5113.85 |============ M610 2x5687 96GB, Kern=native PowerD TurbosOnly ........ 4849.32 |============ M610 2x5687 96GB, Kern=native noPowerD DellBIOSMaxPerf . 5386.16 |============= t-test1 2017-01-13 Threads: 1 Seconds < Lower Is Better M610 2x5687 96GB, Kern=native .......................... 30.66 |=============== M610 2x5687 96GB, Kern=native NoPowerD but epp running . 14.66 |======= M610 2x5687 96GB, Kern=native PowerD TurbosOnly ........ 14.65 |======= M610 2x5687 96GB, Kern=native noPowerD DellBIOSMaxPerf . 13.99 |======= t-test1 2017-01-13 Threads: 2 Seconds < Lower Is Better M610 2x5687 96GB, Kern=native .......................... 9.950 |=============== M610 2x5687 96GB, Kern=native NoPowerD but epp running . 4.490 |======= M610 2x5687 96GB, Kern=native PowerD TurbosOnly ........ 4.478 |======= M610 2x5687 96GB, Kern=native noPowerD DellBIOSMaxPerf . 4.297 |====== Stream 2013-01-17 Type: Copy MB/s > Higher Is Better M610 2x5687 96GB, Kern=native .......................... 27283.5 |============= M610 2x5687 96GB, Kern=native NoPowerD but epp running . 28200.7 |============= M610 2x5687 96GB, Kern=native PowerD TurbosOnly ........ 28058.2 |============= M610 2x5687 96GB, Kern=native noPowerD DellBIOSMaxPerf . 28183.7 |============= Stream 2013-01-17 Type: Scale MB/s > Higher Is Better M610 2x5687 96GB, Kern=native .......................... 25830.9 |============= M610 2x5687 96GB, Kern=native NoPowerD but epp running . 26531.0 |============= M610 2x5687 96GB, Kern=native PowerD TurbosOnly ........ 26253.5 |============= M610 2x5687 96GB, Kern=native noPowerD DellBIOSMaxPerf . 26424.0 |============= Stream 2013-01-17 Type: Triad MB/s > Higher Is Better M610 2x5687 96GB, Kern=native .......................... 28376.0 |============= M610 2x5687 96GB, Kern=native NoPowerD but epp running . 29094.6 |============= M610 2x5687 96GB, Kern=native PowerD TurbosOnly ........ 28815.1 |============= M610 2x5687 96GB, Kern=native noPowerD DellBIOSMaxPerf . 29001.3 |============= Stream 2013-01-17 Type: Add MB/s > Higher Is Better M610 2x5687 96GB, Kern=native .......................... 27760.2 |============ M610 2x5687 96GB, Kern=native NoPowerD but epp running . 29049.2 |============= M610 2x5687 96GB, Kern=native PowerD TurbosOnly ........ 28691.5 |============= M610 2x5687 96GB, Kern=native noPowerD DellBIOSMaxPerf . 28890.4 |============= CacheBench Read Cache MB/s > Higher Is Better M610 2x5687 96GB, Kern=native .......................... 4761.70 |====== M610 2x5687 96GB, Kern=native NoPowerD but epp running . 9132.16 |============ M610 2x5687 96GB, Kern=native PowerD TurbosOnly ........ 9407.28 |============ M610 2x5687 96GB, Kern=native noPowerD DellBIOSMaxPerf . 9809.61 |============= CacheBench Write Cache MB/s > Higher Is Better M610 2x5687 96GB, Kern=native .......................... 6862.70 |====== M610 2x5687 96GB, Kern=native NoPowerD but epp running . 13329.51 |=========== M610 2x5687 96GB, Kern=native PowerD TurbosOnly ........ 13739.50 |============ M610 2x5687 96GB, Kern=native noPowerD DellBIOSMaxPerf . 14318.45 |============