Originally Posted by GoneToPlaid
Hey everyone, first time post, although I've read every one lol
I wanted to share some results I've gotten with overclocking memory, and see if any of you have seen similar results. I've gotten pretty deep into tweaking parameters, just trying to see which knobs we have available to us.
First thing was that going to the new BIOS (0081 in my case) was extremely frustrating. It seemed like I had gone backwards from where I was on 1002. However, I figured out a couple of things:
#1 The default fail count has changed from 5 to 1. This means that after 1 failed attempt, the BIOS clears all the settings and starts over. On my system, for some reason, it only trains after the 2nd or 3rd attempt, so I was never able to pass until I increased the fail count back to 5. If you get stuck in a F9 reboot loop, the red safe_boot button is your friend
#2 For some reason, I had to LOWER the DRAM voltage to 1.32 volts from 1.35 to get my system to work at 3200. I hadn't thought of lowering the voltage before, but for some reason that worked. I wonder if this is related to the memory hole.
So, once I had gotten past these hurdles, I tried to figure out what my memory was sensitive to. I'll skip the details, but basically I put my memory on the edge of passing/failing, and looked for settings which helped. Here's the ones I have found so far:
SOC voltage - definitely impacts things, once I got above like 3400. To push from 3500 to 3600 I had to go from 1.2 to 1.25
VDDP - I also had to increase this to get higher than 3500, to 1.15 Volts. Surprisingly, it failed at 1.2 Volts, so again you can't go too high on this one
DRAM voltage - To get higher frequencies, I did have to increase this. 3600 required 1.45 Volts
Termination values - for my system it seems to like the auto value (53.3 Ohms), looks like every system might be different
Currently I'm running with Trident Z RGB F4-3200CL14D-16GTZR, 2x8MB
So, I was able to boot with the following:
DRAM voltage = 1.45
SOC voltage = 1.25
VDDP = 1.15
Timings = 18:18:18:18:45
2667 strap (so 3573 DDR)
Core clock = 3.9 GHz
However, this isn't entire stable running stress, so I back BCLK off to 131 (keeping core clock at 3.9 GHz)
This puts me at 3493 DDR, which I'm pretty happy with
AIDA64 is showing latency around 72 ns or so. EDIT also backed off VDDP to 1.05
If anyone has similar DIMMs, can you see if you get similar results? I'm about to try some other DIMMs next, I'll let you know what I find out. If anyone has a recipe to push even higher, I'd love to hear about it!!!