r/pcmasterrace • u/RedEntityXR • 5m ago
Discussion Just achieved an exceptional y-cruncher Pi-5B result of 105.808 seconds on my Core Ultra 9 275HX laptop
This was done on an MSI Vector 16 HX AI, with 108.899 seconds total wall time, 88.50% multicore efficiency, and successful validation of all 5 billion digits. What makes this particularly impressive is that I'm using nothing but the laptop's completely stock cooling system, just two factory fans and seven heat pipes, with absolutely no external cooling modifications, in a room at 75°F (23.9°C). For perspective, my result is faster than several published stock-system y-cruncher 5B results, including the Ryzen 9 9900X (109.687 seconds), Ryzen 9 9950X (119.363 seconds), Ryzen 7 9850X3D (115.581-130.000 seconds), and Ryzen 7 9800X3D (143.891-152.563 seconds). It also beats a published Core Ultra 9 285K desktop result of 131.865 seconds. These are official published reference results from different test systems. They illustrate just how competitive this heavily tuned mobile processor can be against considerably more power-hungry desktop hardware. Achieving this level of computational performance with factory laptop cooling and a normal 75°F ambient temperature is an excellent demonstration of what careful BIOS, CPU, and memory optimization can accomplish. Windows 11 Pro was also heavily stripped down with my own custom PowerShell script that I created which modifies 300 different performance-focused aspects of the OS. Tuning details are below -
CPU
• Intel Core Ultra 9 275HX
• 24 cores / 24 threads
• 8 Performance cores + 16 Efficiency cores
Memory
• 32 GB Kingston Fury Impact DDR5
• DDR5-5600 overclocked to 6200
• Timings: 40-40-40-80
• Memory latency: 85.3ns (stock was 102ns)
GPU
• NVIDIA GeForce RTX 5080 Laptop GPU
• 16 GB GDDR7 VRAM
• Full 175-watt GPU configuration
• GPU overclocked +330mhz core/+4300mhz mem/+435mhz xbar/+130mhz sys/+400mhz video/0.9600 nvvdd+msvdd ratio
• Dedicated GPU mode enabled
Display
• 16-inch IPS-LCD
• 2560 × 1600 resolution
• 240 Hz refresh rate
Storage
• 1 TB primary SSD
Power
• 330-watt power supply
Bios Changes
1.) Enabled Overclocking at Advanced > Overclocking > Performance > Overclocking.
2.) Disabled Undervolt Protection at Advanced > Overclocking Performance Menu > Processor > Undervolt Protection.
3.) Disabled CFG Lock at Advanced > Power & Performance > CPU Power Management Control > CPU Lock Configuration.
4.) Disabled Overclocking Lock at Advanced > Power & Performance > CPU Power Management Control > CPU Lock Configuration.
5.) Enabled Intel VT-X at Advanced > CPU Configuration > Intel Virtualization Technology.
6.) Disabled Intel VT-D at Advanced > VT-D.
7.) Set the P-Core Ratio Limit to 57x at Advanced > Overclocking Performance Menu > Processor > P-Core Ratio Limits.
8.) Enabled Per-Core Ratio Override and set the individual P-Core ratio limit to 57x at Advanced > Overclocking Performance Menu > Processor > P-Core Ratio Limits.
9.) Set the E-Core Ratio Limit to 47x at Advanced > Overclocking Performance Menu > Processor.
10.) Set the P-Core Voltage Offset to -40 mV at Advanced > Overclocking Performance Menu > Processor.
11.) Set the E-Core Voltage Offset to -40 mV at Advanced > Overclocking Performance Menu > Processor > VF Configuration Scope > Per Core.
12.) Set the Ring/P-Cache Voltage Offset to -90 mV at Advanced > Overclocking Performance Menu > Ring.
13.) Set the Ring Ratio to 39x at Advanced > Overclocking Performance Menu > Ring.
14.) Set the System Agent Voltage Offset to -20 mV at Advanced > Overclocking Performance Menu > SA.
15.) Enabled Power Limit 1 Override and set Power Limit 1 to 140000 at Advanced > Power & Performance > CPU Power Management Control.
16.) Enabled Power Limit 2 Override and set Power Limit 2 to 220000 at Advanced > Power & Performance > CPU Power Management Control.
17.) Disabled PCIe Gen Speed Downgrade at Advanced > Power & Performance > CPU Power Management Control.
18.) Set tREFI to 40000 at Advanced > Overclocking Performance Menu > Memory Timings.
19.) Set tRFC to 620 at Advanced > Overclocking Performance Menu > Memory Timings.
20.) Set tRRD-L to 12 at Advanced > Overclocking Performance Menu > Memory Timings.
21.) Set tWTRL to 24 at Advanced > Overclocking Performance Menu > Memory Timings.
22.) Set tCCD-L to 12 at Advanced > Overclocking Performance Menu > Memory Timings.
23.) Set tCCD-L-WR to 48 at Advanced > Overclocking Performance Menu > Memory Timings.
24.) Set tWRTS to 6 at Advanced > Overclocking Performance Menu > Memory Timings.
25.) Set tRTP to 18 at Advanced > Overclocking Performance Menu > Memory Timings.
26.) Disabled Secure Boot at Security > Secure Boot > Secure Boot.
27.) Disabled CPU C-States at Advanced > Power & Performance > CPU Power Management Control > CPU C-State Control > CPU C-States.
28.) Enabled Re-Size BAR Support at Advanced > PCI Subsystem Settings > Re-Size BAR Support.
29.) Disabled Energy Efficient P-State at Advanced > Power & Performance > CPU Power Management Control > View/Configure Turbo Options > Energy Efficient P-State.
30.) Set MSI BIOS User Scenario Mode to Performance.
31.) Changed the memory ratio from the default 168/5600 MT/s setting to 186/6200 MT/s.
32.) Disabled HWP Autonomous EPP Grouping at Advanced > Power & Performance > CPU Power Management Control.
33.) Disabled SA GV at Advanced > System Agent (SA) Configuration > Memory Configuration > SA GV.
34.) Disabled DDR Power Down Mode at Advanced > System Agent (SA) Configuration > Memory Configuration > Power Down Mode.
35.) Set Audio DSP Compatibility Mode to UAA HDA Inbox Audio Mode at Advanced > PCH-IO Config > Audio DSP Comp Mode.
36.) Disabled Wake On Voice at Advanced > PCH-IO Config > HD Audio DSP Features Config.
37.) Disabled Codec Based Wake On Voice at Advanced > PCH-IO Config > HD Audio DSP Features Config.
38.) Disabled Intel SST Speech at Advanced > PCH-IO Config > HD Audio DSP Features Config.
39.) Disabled Custom Module Beta at Advanced > PCH-IO Config > HD Audio DSP Features Config.
40.) Disabled Custom Module Gamma at Advanced > PCH-IO Config > HD Audio DSP Features Config.
41.) Disabled Audio DSP at Advanced > PCH-IO Config > HD Audio DSP Features Config.
42.) Enabled Legacy IO Low Latency at Advanced > PCH-IO Config.
43.) Disabled all three LPM SO options at Advanced > PCH-IO Config.
44.) Disabled PCH LPM at Advanced > PCH-IO Config.
45.) Disabled ASPM on PCI Express Root Port SPA1 and the remaining PCIe root ports at Advanced > PCIe Config.
46.) Disabled Advanced Error Reporting on PCI Express Root Port SPA1 and the remaining PCIe root ports at Advanced > PCIe Config.
47.) Disabled CCF AutoGV at Advanced > Power & Performance > CPU Power Management Control.
48.) Disabled Power Floor Management at Advanced > Power & Performance > CPU Power Management Control.
49.) Disabled Race To Halt (RTH) at Advanced > Power & Performance > CPU Power Management Control.
50.) Disabled HwP Autonomous Per Core P State at Advanced > Power & Performance > CPU Power Management Control.
51.) Disabled the NPU at Advanced > System Agent.
52.) Disabled Low Power S0 Idle Capability at Advanced > RC ACPI Settings.
53.) Disabled RC6 Render Standby at Advanced > Power & Performance > GT-Media Power Management Control.
54.) Disabled Global DDR RFI Mitigation at Advanced > System Agent Configuration > Memory Configuration > RFI Setting.
55.) Disabled HWP Lock at Advanced > Power & Performance > CPU Power Management Control.
56.) Disabled Global DLVR RFI Mitigation Control at Advanced > Power & Performance > CPU Power Management Control > CPU VR Settings > RFI Settings.
57.) Disabled VTIO Support at Advanced > Platform Settings > VTIO, although this setting currently appears to re-enable itself automatically.
58.) Disabled ACPI D3Cold Support at Advanced > ACPI D3Cold Settings.
59.) Set ADMA to Force ADMA at Advanced > SDIO Config.
60.) Disabled DMI ASPM at Advanced > DMI Config.
61.) Disabled DMI Link ASPM Control at Advanced > DMI Config.
62.) Disabled DMI L1SS at Advanced > DMI Config.
63.) Disabled Legacy UART at Advanced > Debug Config.
64.) Set SoundWire Codecs Topology to Default at Advanced > PCH-IO Config > HD Audio Config.
65.) Disabled DMIC #0 at Advanced > PCH-IO Config > HD Audio Config.
66.) Disabled Energy Efficient Turbo at Advanced > Power & Performance > CPU Power Management Control > View/Configure Turbo Options.
67.) Disabled Core PS3 at Advanced > Power & Performance > CPU Power Management Control > Efficiency Performance VR Settings.
68.) Disabled Core PS4 at Advanced > Power & Performance > CPU Power Management Control > Efficiency Performance VR Settings.
69.) Disabled SA PS3 at Advanced > Power & Performance > CPU Power Management Control > SA VR Settings.
70.) Disabled SA PS4 at Advanced > Power & Performance > CPU Power Management Control > SA VR Settings.
71.) Disabled GT VR PS3 at Advanced > Power & Performance > CPU Power Management Control > GT VR Settings.
72.) Disabled GT VR PS4 at Advanced > Power & Performance > CPU Power Management Control > GT VR Settings.
73.) Set DMI Max Link Speed to x4 at Advanced > DMI Config.
74.) Disabled USB XHCI Hand-Off at Advanced > USB Config.
75.) Disabled S0ix Auto Demotion at Advanced > PCH-IO Config.
76.) Disabled WDT Enable at Advanced > Overclocking Performance Menu.
77.) Disabled PTID Support at Advanced > RC ACPI Settings.
78.) Set PCIe Delay Between _OFF and _ON to 50 ms at Advanced > RC ACPI Settings.
79.) Disabled MC6 Media Standby at Advanced > Power & Performance > GT/Media Power Management Control.
80.) Disabled PAVP at Advanced > System Agent (SA) Configuration > Graphics Configuration.
81.) Disabled PMC Watchdog Timer at Advanced > PCH-IO Config > PMC Config.
82.) Disabled 8254 Clock Gate at Advanced > PCH-IO Config.
83.) Disabled PET Progress at Advanced > AMT Config > ASF Config.
84.) Disabled Crashlog Feature at Advanced > Debug Settings > Crashlog Settings.
85.) Disabled Three Strike Counter at Advanced > Debug Settings > Advanced Debug Settings.
86.) Enabled PCI-E Delay Optimization at Advanced > RC ACPI Settings.
87.) Disabled Per Core P State OS Control Mode at Advanced > Power & Perf > CPU Power Mgmt Control.
88.) Disabled OS Idle Mode at Advanced > PCH-IO Config.
89.) Disabled GPE1 Support at Advanced > Platform Settings.
90.) Lowered Data On Active Interval Select SNDW (all) to 6 at Advanced > PCH-IO Config > HD Audio Config > HD Audio Advanced Config.
91.) Lowered Data On Delay Select SNDW to 2 (all) at Advanced > PCH-IO Config > HD Audio Config > HD Audio Advanced Config.
92.) Disabled BT Low Energy at Advanced > PCH-IO Config > HD Audio Config > HD DSP Features Config.
93.) Set iDisplay Audio Link T-Mode to 1T at Advanced > PCH-IO Config > HD Audio Config > HD Audio Advanced Config.
94.) Set NGU Ratio to 30x at Advanced > Overclocking Performance Menu > NGU.
95.) Set OC Ratio to 30x at Advanced > Overclocking Performance Menu > NGU.
96.) Set D2D Ratio to 30x at Advanced > Overclocking Performance Menu.
97.) Enabled Switch Off DMI Power Gating at Advanced > DMI Config.
98.) Disabled USB Audio Offload at Advanced > PCH-IO Config > USB Config.
99.) Enabled Enhanced Port 80h LPC Decoding at Advanced > PCH-IO Config.
100.) Disabled Energy Reporting Debug Mode at Advanced > PCH-IO Config.
101.) Disabled Ring Down Bin at Advanced > Overclocking Performance Menu > Ring.
102.) Set the GT Voltage Offset to -70 mV at Advanced > Overclocking Performance Menu > GT.
103.) Disabled Computer-Die SSC at Advanced > Overclocking Performance Menu.
104.) Disabled SOC-Die SSC at Advanced > Overclocking Performance Menu.
105.) Disabled CPU Run Control at Advanced > Debug Settings > Advanced Debug Settings.
106.) Enabled SOC BCLK PLL Configuration at Advanced > BCLK Configuration.
107.) Enabled CPU BCLK PLL Configuration at Advanced > BCLK Configuration.
108.) Disabled USB3 Type-C UFP2DFP Kernel/Platform Debug Support at Advanced > Debug Settings > Advanced Debug Settings.
109.) Disabled D3 Setting for storage at Advanced > RC ACPI Settings.
110.) Set CH Hash Interleaved Bit to BIT7 at Advanced > System Agent Configuration > Memory Configuration.
111.) Disabled Opportunistic Self Refresh at Advanced > System Agent Configuration > Memory Configuration.

