Gigabyte X670E Aorus Xtreme Vcore regulation test results
Added 2022-10-09 15:53:49 +0000 UTCAll measurements are taken with a Rigol DS1054Z unlocked to 100MHz bandwidth.
Ultra Extreme LLC is the absolute worst thing I've measured on an AM5 motherboard so far with 180mv of undershoot. It's so bad in fact that I was struggling to get a measurement before the CPU crashed due to the undershoot.
Extreme LLC is absolutely atrocious with 150mv of undershoot
Turbo LLC is as bad as Extreme LLC with 150mv of undershoot
High LLC also sucks with 120mv of undershoot
Medium LLC also sucks with 110mv of undershoot
Low LLC also sucks with 100mv of undershoot
Standard LLC is kinda ok with 70mv of undershoot (A good result would be around 20-50mv of undershoot depending on the platform)
Normal LLC is the same as Standard LLC
Auto LLC is the same as Standard LLC
I've contacted Gigabyte about maybe making the load line slopes less agressive to try reduce the undershoot. I think that if standard LLC was drooping by around 120mv instead of just 65mv it should be possible to not undershoot by more than 50mv.
Since this testing was done with linpack here's the memory configuration:
Linpack Xtreme V1.1.5 dataset = 10GB
target SVI3 TFN Vcore = 1.11 +/- 5mv
CPU frequency = 4.8GHz ALL core
FCLK = 2GHz
RAM = 6Gbps 2x 16GB SR Hynix 16Gb M-die
tCL 32
tRCD 39
tRP 39
tRAS 30
tRC 68
tWR 48
tRFC 777
tRFC2 333
tRFCpb 233
tRTP 8
tRRDL 6
tRDDS 4
tFAW 20
tWTRL 16
tWTRS 6
tRRSCL 8
tRRSC 1
tWWSCL 8
tWWSC 1
tWRRD auto
tRDWR auto
The CPU should be getting around 800Gflops with these settings.
The motherboard was provided for testing by Gigabyte
