2700X and 8-Pack PC4-25600C14 3200MHz

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Having now spent far too much time faffing around with my CPU and GPU, I'd like to try and get this RAM running at 3333 if I can.

Runs 3200 using XMP no problem, also runs at 3266 with no further tweaks, but if I try to get it to run at 3333 it will work fine until I boot from cold and then it won't get as far as Windows.

I understand that my mobo may be a contributing factor, X470 Aorus Ultra Gaming, but I've taken a look at the Ryzen DRAM calculator and although I had a go entering what I think are the correct details, I'm not a 100%.

Can someone who knows what they are doing please tell me if the below likes correct to try to run this RAM at 3333? What's the general rule of thumb, round up or down when timings aren't whole numbers?



Thanks in advance for any pointers at all. :D
 
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I’m afraid a lot will depend on the silicon lottery as the Infinity Fabric, you could try pushing up the memory voltage to 1.45V if you haven’t tried that already. Unfortunately ASUS motherboards, especially the Crosshair VII seem to work better as they have Stilt’s B-DIE presets in the BIOS.

Running 3266 CL14 is very good as it is, any gains are not likely to be noticeable as you’re well past the point of diminishing returns on Ryzen as it is.

Have you tried posting in the Reddit thread? A much wider audience than here, or just send a PM to 8-Pack!
 
Yeah, thought 3266 CL14 wasn't half bad, that's why I wanted to try and eek a little more out of the RAM as I figured that it all looks good so far on the CPU front and I might be in with a chance.

I've not entered those timings in yet as I wasn't sure that I'd entered the details correctly, never mind got the right timings out of it.

Tested increasing the voltage a little at 3333 without changing individual timings but unsurprisingly no joy. It'll work flawlessly when I set it but it's always following a cold start it will fail to boot. I can sit there restarting it all day and benchmarking it at 3333 or 3400 even without problems, but shut it down and power it back on and every time it'll fail to boot into Windows. Figured there's probably a timing that's specifically causing it, but I don't know what it would be.
 
After trawling the internet looking for helpful info it appears that I'm already doing pretty well with what I've got, with TBH, the minimum of fuss.

Maybe I should just be happy with what I already have. :p
 
I'd try and get the 3200 FAST timings stable rather than bumping the speed up. The XMP sub-timing settings are pretty loose for maximum compatibility.
 
OP, have you set your Dram boot voltage to the same value as your Ram voltage ? 9 times out of 10 the cold boot issue is caused by not setting the Dram boot up voltage.
 
HeX said:
I'd try and get the 3200 FAST timings stable rather than bumping the speed up. The XMP sub-timing settings are pretty loose for maximum compatibility.
Click to expand...

Sounds like a plan but I was unsure that the calculator was providing me with the right timings to use.

Is the 2700X a Ryzen + gen? I assume so.
 
kitfit1 said:
OP, have you set your Dram boot voltage to the same value as your Ram voltage ? 9 times out of 10 the cold boot issue is caused by not setting the Dram boot up voltage.
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I didn’t even know that there was such a thing. Don’t remember seeing it in the BIOS but I’ll have a look later.

Sounds spot on TBH.
 
HRL said:
I didn’t even know that there was such a thing. Don’t remember seeing it in the BIOS but I’ll have a look later.

Sounds spot on TBH.
Click to expand...

I got mine running at 3400mhz 14-14-14-30-1T-54-350-plus the other sub timings, Gear Down Disabled, Power Down Disabled, everything else on Auto, Ram voltage 1.42v, SoC voltage at 1.15v, 9 hours memtest stable, 4 hours google stress test stable, and the cinebench scores at the above settings were 1917, cinebench scores with stock settings 1909, ended up dropping the voltage back down and running it at the 3200mhz stock settings instead.

As others have said, anything over 3200mhz really isn't anything to brag about and isn't really worth the hassle, if you can easily hit 3266mhz without probs, leave it at that.

Managed to get it too boot at 3600mhz, but the timings were so loose and had to enable gear down and power down, the scores were rubbish, in the 1700's.
 
Thanks for the input guys. I think I’ll drop it back to 3200 and try and tighten those timings instead.

Any of the timings that should be left alone on auto? Or just use the calculator for everything and keep my fingers crossed?
 
The fast timings from the ram calc should work. Need to enter everything from that first page and may have to try some of the alternative settings before stable. It's decent memory though so should be fine.
 
Yep, fast timings worked first time.

The question is now, do I try for 3333. Hmmm.
 
Not sure if anyone is interested but in case they have a 2700X and are toying with buying this RAM or not...

3400Mhz 14-14-14-14-28-42 CL14 @ 1.4V.

Not too bad at all. That’s my lot, can’t be doing spending any more time tweaking RAM, it takes so bloody long testing it thoroughly.

Turns out that the Ryzen DRAM Calculator is actually a doddle to use after all.
 
DarkHorizon472 said:
Worth looking at cpu voltage as well. To get 32gb stable (4 x 8gb) at 3200cl14 I upped my cpu voltage from 1.2v to 1.25v.

On 2 x 8gb 3333c14 , 1.2v cpu was fine.
Click to expand...

Yeah, I had a play around with VCORE but noticed that my mobo fluctuates the voltage a fair bit, quite high at times, so I didn’t want to add to it with a crappy offset. Unfortunately that’s my only option on this mobo, no manual voltage setting.

Pleased with what I got out of the RAM anyway. Did a load of testing with the CPU and XFR and it turns out that XFR gets me better results than OC’ing too. Was quite surprised by that.

Overall very pleased with the CPU/RAM combo. :D
 
I've got this ram too and it worked straight out the box at 3200 cl14 with xmp profile. I've since changed the ram speed to 3466 and left xmp settings alone, so still at c14 1.35v and runs fine.

My cinebench scores are no where near as impressive as the ones above though. 1760ish at 3200 and 1799 at 3466... I've not done anything with the chip regards to overclocking, just left everything standard.
 
@KungFuSpaghetti

Just played around with Cinebench and got a 1931. Think I can stop now. :p

That’s with the RAM as in post #13.

Right, now what did I do with those games...
 
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