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The original was posted on /r/overclocking by /u/iiAvoe on 2023-08-08 04:08:16+00:00.
Just posting my memory overclocking experiment with the new BIOS
Platform: Ryzen 7700X, MSI B650 Edge
Memory: F5-6400J3239G16G (6400MT/s 2x16GB 32-29-29-102 CR1T Hynix A-die)
XMP only OC in AGESA 1.0.0.7A stable BIOS:
- XMP only, no change
- BeforeOC.png
6200MT/S After OC in AGESA 1.0.0.7A stable BIOS:
- Downclocking to 6200MT/S to pass Memtest64 here is a must
- Same OC settings as Buildzoid's stable Hynix timings
- AfterOC.png
6200MT/S After OC in AGESA 1.0.0.7C beta BIOS:
- I'm using the iGPU on 7700X here which cumbers some performance
- Same OC settings as Buildzoid's stable Hynix timings
- Read, Write, Copy & Latency has improved
- AfterOC-BIOS173-6200.png
- AfterOC-BIOS173-6200-2.png
6400MT/S After OC in AGESA 1.0.0.7C beta BIOS:
- I'm using the iGPU on 7700X here which cumbers some performance
- Same OC settings as Buildzoid's stable Hynix timings
- Another visible bandwidth improvement, without a change in latency
- It passed MemtestPro, all 16 threads in 29760MB for 1.5 hours test with ease (manually stopped at 121% coverage)
- It passed y-Cruncher for with each algorithm taking 120 seconds, manually stopped after half an hour
- However, I only got it to boot once & never again, it appears to be stuck on POST. I have tried these following (which involves resetting BIOS for ~30 times) but non of them worked
- Raising DRAM voltage (VDDQ, VDDIO, DRAM-VDD) from 1.35V to 1.38V
- Raising SoC voltage from 1.25V to 1.28V
- Reducing PBO2 negative offset from 26 to 25 (CPU LLC mode 3)
- Turning on SoC LLC mode 3
- Combining all the changes above together aswell
- I ended up fixed it by dialing back DRAM speed to 6200MT/S and everything went back to normal, so I conclude this as a beta-BIOS thing, it needs a stable BIOS upgrade later
- AfterOC-BIOS173-6400.png
- AfterOC-BIOS173-6400-2.png
Sidenote - Buildzoid's stable Hynix timings:
