Note: Be sure to test before and after! It is not always the case that this procedure will improve benchmarks & scores. But you can increase the speed of the Infinity Fabric with slower memory kits. Sorry about the Moire shirt! Will set on fire now, this was shot at the same time as the temps video.
RAM Calculator:
Crucial Memory Speed vs Latency:
Note there wasn't time to cover command rate (1T vs 2T) in this video. If possible try to get memory with a command rate of 1T for now. Working on something special for that!
@wendell Unfortunately someone/s (it has been more than one I am sure) destroyed the sheet you posted on docs. could you possibly put a write protected one that can be copied off please. Can't have nice things anymore it seems.
On a happier note, I have loved the content of your channel. Please keep going.
Anyways, I've noticed the same thing a couple months ago when I was looking into the differences between DDR3 and DDR4. I though it was odd that even though the speed of RAM went up quite a bit, but latency also went way up. After some digging it appeared that DDR4 had pretty much zero improvement over DDR3. I'll have to see if I can dig my post up about it again.
Yes thank you very much, I am waiting for the r5 release to finish my build and the ram I bought is 16gb @ 3200 14.14.14.34 can't wait to see if I can push it further and your chart has taken alot of the headache and guess work out for me.
I would try to push to 2933. At 1.35v you may be able to get by with only minor timing differences like 18-18-18-38 or 39 I'd probably start around there. Try 1.2/1.25 v soc voltage also
no, just ryzen. the info is scant but I think the 1:2 ratio is because ddr4 moves 16 bytes at a time and IF moves 32 bytes at a time. so that makes sense.
I have the same memory as this, been trying to get it up to even 2933 without much luck. I can only offset the voltage up to 1.3v on the asus b350 prime which i think is holding it back. I'll have another bash when my gb x370 k5 gets here. (pre-order only 30 days overdue, surely it will arrive soon :^)
I assume setting 3200 and just going back and loosening the timings until it boots is the way to go when OC'in ram? or will there be points where no matter how loose the timings are some mobo/imc just won't boot at certain frequencies?
A little Wendell mojo got me past the final roadblock. I have a Corsair Vengeance 2x16GB 3000MHz kit that I couldn't get past 2666. It's often said "loosen the timings" but never said what exactly to loosen them to, and on the AX370 Gaming 5, guess work = boot loop.
I plugged the stock timings into your chart, 15-17-17-35 and got 20-23-23-48. I popped them into the BIOS and finally got 2933 without bootlooping.
i set the timings to 18-18-18-38 at 1.35v, at 2933, and it wouldn't post, so i had to clear the rtm ram using the pins to get it to post again, and it reverted to defaults.
i tried 18-18-18-39 at 1.25v and same thing, it hung.
i unno if its the board, or the ryzen cpu not liking it, what other timings and volts should i try?
also noted, that its really annoying that the system hangs and i have to unplug the power and short the two pins on the board as per the manual to clear the ram settings.
Plug the timings into the spreadsheet and see what it says. Also 1.35v. there is a button next to the oc button that's supposed to reset ram only but the software may not be hooked up yet. You might also wait a full 2 mins before giving up on post as first post may be tricky.
You on the beta bios? Asus has been way more test heavy on their uefis it seems so seems longer between updates. There is a bug update dropping next week for sure but I didn't tell you that
