Aaron44126 Posted July 30, 2022 Share Posted July 30, 2022 Announced: April 19, 2022 Release date (RTO): July 7, 2022 12th gen Alder Lake CPUs NVIDIA Ampere refresh GPUs, up to RTX A5500 GeForce RTX 3080 Ti option also available (through sales rep only in most territories) Up to 128 GB DDR5 non-ECC memory (via CAMM module), or 64 GB DDR5 ECC or non-ECC (via SODIMM) All NVMe slots support PCIe4 Full driver support for Windows 10 & Windows 11 Spec sheet: Precision 7670 • Precision 7770 Driver RSS feeds: Precision 7670 • Precision 7770 Pre-release thread (NBT) Pre-release thread (NBR) ———————————————————————— Opportunities for CPU performance improvement Here, I am collecting some information from the first several pages of this thread to hopefully make it easier to find in one spot. NOTE — BIOS update version 1.8.0 has corrected these values. A manual fix for IA AC/DC loadline is not needed anymore; just update the BIOS. (You still may want to unlock undervolting, though...) If you received a Precision 7770 with the heatsink that contains Delta fans, have Dell replace the heatsink and hopefully you get the one with Sunon fans, which performs better. (Unfortunately, you must remove the heatsink to check and see which fans you have.) See this post by @MyPC8MyBrain for suggestions for reinstalling the heatsink. The original Delta fan heatsink will thermal throttle out of the box. Repasting can eliminate the thermal throttle, so that you can use ThrottleStop to raise PL2 and increase performance of the CPU. Perhaps the biggest CPU performance gain that can be had is by fixing the IA AC/DC loadline values, which are set incorrectly on this system. Visit this guide and look at steps 5-7 for directions on how to get to an environment where you can edit some EFI variables. These commands will correct the IA AC/DC loadline values (thanks @win32asmguy). I got a ≈20% boost in the 10-minute Cinebench score from fixing these... setup_var CpuSetup 0x132 0xAA # set IA AC LoadLine LSB to 170 (1.7mOhms) setup_var CpuSetup 0x133 0x0 # set IA AC LoadLine MSB to 0 And these commands will enable overclocking/undervolting, if you wish to mess with that: setup_var CpuSetup 0x10E 0x0 # Overclocking Unlock setup_var CpuSetup 0x43 0x0 # CFG Unlock Additional tuning with ThrottleStop (undervolting, etc.) can further improve performance. @MyPC8MyBrain has some settings in this post. ———————————————————————— Opportunities for GPU performance improvement The GPU power level can be increased by following these steps. This process has been confirmed to work with MSI Afterburner 4.6.5 beta 2, NVIDIA graphics driver 527.56, and Dell's 1.8.0 BIOS. It may work with other (newer) versions as well. Download a GeForce GPU driver from NVIDIA. (Visit this page and select GeForce 3080 Ti laptop GPU, and download a current driver. You can install a GeForce driver even if you have a pro RTX GPU.) A GeForce driver is required; the Enterprise drivers will not allow you to change the GPU's power limit. In Device Manager, disable "NVIDIA Platform Controllers and Framework" under "Software devices". Alternatively, you can visit "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\nvpcf" in the registry and set "Start" to 4. This will effectively disable the NVIDIA Platform Controllers and Framework driver but not have it appear disabled in Device Manager. Reboot to apply the change. Install MSI Afterburner. In MSI Afterburner, locate the setting for the power limit. It may have a nonsense value. Drag the slider down to 1% and then up to max, and apply the changes. The NVIDIA GPU should now be able to operate at a higher power level. Thanks to @win32asmguy for figuring this out! 3 1 Dell Precision 7770 (personal) • Dell Precision 7560 (work) • Full specs in spoiler block below Info posts (Dell) — Dell Precision key posts • Dell driver RSS feeds • Dell Fan Management — override fan behavior Info posts (Windows) — Turbo boost toggle • The problem with Windows 11 • About Windows 10 LTSC Spoiler Dell Precision 7770 (personal) Intel Core i9-12950HX ("Alder Lake"), 8P+8E 8× P cores ("Golden Cove"): 2.3 GHz base, 5.0 GHz turbo, hyperthreading 8× E cores ("Gracemont"): 1.7 GHz base, 3.6 GHz turbo 128GB DDR5-3600 (CAMM) NVIDIA GeForce RTX 3080 Ti 16GB (DGFF) Storage: 2TB system drive: Samsung 980 Pro, PCIe4 24TB additional storage: 3× Sabrent Rocket 4 Plus 8TB, PCIe4 (Storage Spaces) Windows 10 (Enterprise LTSC 2021) 17.3" 3940×2160 display Intel Wi-Fi AX211 (Wi-Fi 6E + Bluetooth) 93Wh battery IR webcam Fingerprint reader Dell Precision 7560 (work) Intel Xeon W-11955M ("Tiger Lake") 8×2.6 GHz base, 5.0 GHz turbo, hyperthreading ("Willow Cove") 64GB DDR4-3200 ECC NVIDIA RTX A2000 4GB Storage: 512GB system drive (Micron 2300) 4TB additional storage (Sabrent Rocket Q4) Windows 10 (Enterprise LTSC 2021) 15.6" 3940×2160 display Intel Wi-Fi AX210 (Wi-Fi 6E + Bluetooth) 95Wh battery IR webcam Fingerprint reader Previous Dell Precision 7530, 7510, M4800, M6700 Dell Latitude E6520 Dell Inspiron 1720, 5150 Dell Latitude CPi Link to comment Share on other sites More sharing options...
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