I was running 3 stick of 1GB I removed 1 and still the same.
I just purchased 4 sticks of 4GB RAMs and installed 4 it was still the same. Then down to 1 no change.
I already reseated the CPU this morning and changed the rivet on the Northbridge as well and it was still the same.
Planning to change CPU to x5690 or x5680 or w3680 which ever I can find first.
I will give memtest86 a run.
The memory controller is that on the CPU tray board?
Could be CPU?
I tried removing the cpu=1 and it panicked.
Here's the Panic log
Anonymous UUID: 902D00F5-96B2-11C6-CD43-6BB84D7D6ECD
Fri Sep 11 21:02:04 2020
*** Panic Report ***
panic(cpu 6 caller 0xffffff801318776f): Kernel trap at 0xffffff801308f45e, type 6=invalid opcode, registers:
CR0: 0x000000008001003b, CR2: 0x00007fff73589e50, CR3: 0x00000000165eb000, CR4: 0x00000000000026e0
RAX: 0x0000000000000008, RBX: 0xffffff8021d11da0, RCX: 0x0000000000000204, RDX: 0x0000000000000000
RSP: 0xffffff90b03e3ed0, RBP: 0xffffff90b03e3ed0, RSI: 0xffffff801fce85d8, RDI: 0x0000000000000002
R8: 0x00000000a0000180, R9: 0x0000000000000004, R10: 0xffffff8021b39610, R11: 0x00000000e0000000
R12: 0xffffff801f216030, R13: 0x0000000000000000, R14: 0x00000002415caec9, R15: 0xffffff8021d11da0
RFL: 0x0000000000010046, RIP: 0xffffff801308f45e, CS: 0x0000000000000008, SS: 0x0000000000000000
Fault CR2: 0x00007fff73589e50, Error code: 0x0000000000000000, Fault CPU: 0x6, PL: 1, VF: 0
Backtrace (CPU 6), Frame : Return Address
0xffffff90b03e39a0 : 0xffffff801306c1c6
0xffffff90b03e39f0 : 0xffffff8013195274
0xffffff90b03e3a30 : 0xffffff8013187544
0xffffff90b03e3aa0 : 0xffffff801301e1e0
0xffffff90b03e3ac0 : 0xffffff801306bc3c
0xffffff90b03e3bf0 : 0xffffff801306b9fc
0xffffff90b03e3c50 : 0xffffff801318776f
0xffffff90b03e3dc0 : 0xffffff801301e1e0
0xffffff90b03e3de0 : 0xffffff801308f45e
0xffffff90b03e3ed0 : 0xffffff8013087247
0xffffff90b03e3f50 : 0xffffff801308663f
0xffffff90b03e3fa0 : 0xffffff801301d557
BSD process name corresponding to current thread: kernel_task
Mac OS version:
17G66
Kernel version:
Darwin Kernel Version 17.7.0: Thu Jun 21 22:53:14 PDT 2018; root:xnu-4570.71.2~1/RELEASE_X86_64
Kernel UUID: 1AE5ACFD-3B6F-3D74-AD52-31F1430DBC6F
Kernel slide: 0x0000000012e00000
Kernel text base: 0xffffff8013000000
__HIB text base: 0xffffff8012f00000
System model name: MacPro5,1 (Mac-F221BEC8)
System uptime in nanoseconds: 9688363328
last loaded kext at 9584936531: com.apple.driver.AppleTyMCEDriver 1.0.3d2 (addr 0xffffff7f958d2000, size 49152)
loaded kexts:
com.apple.driver.AppleTyMCEDriver 1.0.3d2
com.apple.driver.AGPM 110.23.37
com.apple.filesystems.autofs 3.0
com.apple.driver.AppleMikeyHIDDriver 131
com.apple.driver.AppleGraphicsDevicePolicy 3.20.13
com.apple.driver.AppleHDAHardwareConfigDriver 281.52
com.apple.AGDCPluginDisplayMetrics 3.20.13
com.apple.driver.AppleHDA 281.52
com.apple.driver.AppleMikeyDriver 281.52
com.apple.driver.AppleHV 1
com.apple.iokit.IOUserEthernet 1.0.1
com.apple.driver.AppleUpstreamUserClient 3.6.5
com.apple.driver.AppleMCCSControl 1.5.5
com.apple.iokit.IOBluetoothSerialManager 6.0.7f10
com.apple.GeForceTesla 10.0.4
com.apple.driver.pmtelemetry 1
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.AppleOSXWatchdog 1
com.apple.driver.AppleIntelSlowAdaptiveClocking 4.0.0
com.apple.driver.AppleLPC 3.1
com.apple.nvidia.NVDAStartup 10.3.2
com.apple.driver.ACPI_SMC_PlatformPlugin 1.0.0
com.apple.driver.AppleFIVRDriver 4.1.0
com.apple.filesystems.apfs 748.51.0
com.apple.driver.AppleFileSystemDriver 3.0.1
com.apple.filesystems.hfs.kext 407.50.6
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.BootCache 40
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0
com.apple.AppleSystemPolicy 1.0
com.apple.driver.AppleFWOHCI 5.5.9
com.apple.driver.Intel82574LEthernet 2.7.2
com.apple.driver.AppleAHCIPort 329.50.2
com.apple.driver.AppleHPET 1.8
com.apple.driver.AppleRTC 2.0
com.apple.driver.AppleACPIButtons 6.1
com.apple.driver.AppleSMBIOS 2.1
com.apple.driver.AppleACPIEC 6.1
com.apple.driver.AppleAPIC 1.7
com.apple.driver.AppleIntelCPUPowerManagementClient 220.50.1
com.apple.nke.applicationfirewall 183
com.apple.security.TMSafetyNet 8
com.apple.security.quarantine 3
com.apple.driver.AppleIntelCPUPowerManagement 220.50.1
com.apple.kext.triggers 1.0
com.apple.driver.AppleGraphicsControl 3.20.13
com.apple.driver.DspFuncLib 281.52
com.apple.kext.OSvKernDSPLib 526
com.apple.iokit.IOAVBFamily 680.2
com.apple.plugin.IOgPTPPlugin 680.15
com.apple.iokit.IOEthernetAVBController 1.1.0
com.apple.driver.AppleSSE 1.0
com.apple.iokit.IOSurface 211.15
com.apple.iokit.IOSerialFamily 11
com.apple.iokit.IOBluetoothFamily 6.0.7f10
com.apple.nvidia.classic.NVDANV50HalTesla 10.0.4
com.apple.nvidia.classic.NVDAResmanTesla 10.0.4
com.apple.AppleGPUWrangler 3.20.13
com.apple.AppleGraphicsDeviceControl 3.20.13
com.apple.driver.AppleSMBusController 1.0.18d1
com.apple.iokit.IONDRVSupport 519.20
com.apple.driver.AppleHDAController 281.52
com.apple.iokit.IOGraphicsFamily 519.20
com.apple.iokit.IOHDAFamily 281.52
com.apple.iokit.IOAudioFamily 206.5
com.apple.vecLib.kext 1.2.0
com.apple.iokit.IOSlowAdaptiveClockingFamily 1.0.0
com.apple.iokit.IOFireWireIP 2.2.9
com.apple.driver.AppleSMBusPCI 1.0.14d1
com.apple.driver.IOPlatformPluginLegacy 1.0.0
com.apple.driver.IOPlatformPluginFamily 6.0.0d8
com.apple.driver.AppleXsanScheme 3
com.apple.iokit.IOAHCIBlockStorage 301.40.2
com.apple.driver.AppleHIDKeyboard 205
com.apple.driver.usb.IOUSBHostHIDDevice 1.2
com.apple.driver.usb.cdc 5.0.0
com.apple.driver.usb.networking 5.0.0
com.apple.driver.usb.AppleUSBHostCompositeDevice 1.2
com.apple.driver.usb.AppleUSBHub 1.2
com.apple.filesystems.hfs.encodings.kext 1
com.apple.iokit.IOFireWireFamily 4.7.2
com.apple.driver.AppleUSBMergeNub 900.4.1
com.apple.iokit.IOAHCIFamily 288
com.apple.driver.usb.AppleUSBEHCIPCI 1.2
com.apple.driver.usb.AppleUSBUHCIPCI 1.2
com.apple.driver.usb.AppleUSBUHCI 1.2
com.apple.driver.usb.AppleUSBEHCI 1.2
com.apple.driver.usb.AppleUSBHostPacketFilter 1.0
com.apple.iokit.IOUSBFamily 900.4.1
com.apple.driver.AppleUSBHostMergeProperties 1.2
com.apple.driver.AppleEFINVRAM 2.1
com.apple.driver.AppleEFIRuntime 2.1
com.apple.iokit.IOSMBusFamily 1.1
com.apple.iokit.IOHIDFamily 2.0.0
com.apple.security.sandbox 300.0
com.apple.kext.AppleMatch 1.0.0d1
com.apple.driver.DiskImages 480.60.1
com.apple.driver.AppleFDEKeyStore 28.30
com.apple.driver.AppleEffaceableStorage 1.0
com.apple.driver.AppleKeyStore 2
com.apple.driver.AppleUSBTDM 439.70.3
com.apple.driver.AppleMobileFileIntegrity 1.0.5
com.apple.iokit.IOUSBMassStorageDriver 140.70.2
com.apple.iokit.IOSCSIBlockCommandsDevice 404.30.2
com.apple.iokit.IOSCSIArchitectureModelFamily 404.30.2
com.apple.iokit.IOStorageFamily 2.1
com.apple.driver.AppleCredentialManager 1.0
com.apple.driver.KernelRelayHost 1
com.apple.iokit.IOUSBHostFamily 1.2
com.apple.driver.usb.AppleUSBCommon 1.0
com.apple.driver.AppleBusPowerController 1.0
com.apple.driver.AppleSEPManager 1.0.1
com.apple.driver.IOSlaveProcessor 1
com.apple.iokit.IOReportFamily 31
com.apple.iokit.IOTimeSyncFamily 680.15
com.apple.iokit.IONetworkingFamily 3.4
com.apple.driver.AppleACPIPlatform 6.1
com.apple.driver.AppleSMC 3.1.9
com.apple.iokit.IOPCIFamily 2.9
com.apple.iokit.IOACPIFamily 1.4
com.apple.kec.pthread 1
com.apple.kec.Libm 1
com.apple.kec.corecrypto 1.0
EOF
Model: MacPro5,1, BootROM MP51.0089.B00, 4 processors, Quad-Core Intel Xeon, 2.66 GHz, 4 GB, SMC 1.39f5
Graphics: NVIDIA GeForce GT 120, NVIDIA GeForce GT 120, PCIe
Memory Module: DIMM 1, 4 GB, DDR3 ECC, 1066 MHz, 0x80AD, 0x484D54333531553742465238432D48392020
Network Service: Ethernet 2, Ethernet, en1
PCI Card: NVIDIA GeForce GT 120, Display Controller, Slot-2
Serial ATA Device: ST3500630SV, 500.11 GB
Serial ATA Device: SanDisk SDSSDHII240G, 240.06 GB
USB Device: USB Bus
USB Device: USB Bus
USB Device: USB Bus
USB Device: USB Bus
USB Device: HP USB 1000dpi Laser Mouse
USB Device: USB Bus
USB Device: USB Bus
USB Device: USB 2.0 Bus
USB Device: Keyboard Hub
USB Device: Apple Keyboard
USB Device: USB 2.0 Bus
FireWire Device: built-in_hub, Up to 800 Mb/sec
Thunderbolt Bus: