5900X Infinity Fabric running at 2000MHz!

[mrdoubtfull]

Just sharing for whoever is interested.. 

 

The combination I'm using is a complete beast and I love it! 

 

I have a B550 Gaming Carbon paired with a 5900X and 3080 FTW3. Using a cheap Cooler Master 240mm AIO, for now (sold my water cooled setup to buy everything). 

 

I'm running Crucial Ballistix RGB 3600 C16 (16-18-18-38) micron E die and after a bit of tweaking I can run them at 4000MHz 16-18-18-18-36 2t which results in 2000MHz Infinity Fabric. I'm getting ~55ns on AIDA64 and 8400-8800 r20 multi and 630-644 single.

 

I am manually adjusting the frequency, timings and FCLK. 

 

I also heard they're working on either a BIOS/agesa update to improve stability for higher Infinity Fabric/Memory.. 

 

Also, on the MSI (if you have their motherboard), set PBO to 'Enhance Level 1' or set it to 'Advanced' and use your own settings. Level 4 is the slowest and Auto is garbage. I can get 800 more points in r20 by doing this. 

 

I'm pretty sure my 5900X boosts over 5GHz with PBO. Hard to tell. 

 

Manual OC, again, isn't worth it. Might gain a few hundred points in r20 but you'll lose single core speed, even at all core 4.8GHz. 

 

Pretty awesome stuff! Let me know if you want to see something specific or have any questions! 

[eeeee1]

i wish i had the money for a 5000 series... 

but i really kinda dont need to upgrade. so i guess my lack of money is a good thing so i don't just impulse buy everything?

2 minutes ago, mrdoubtfull said:

I'm pretty sure my 5900X boosts over 5GHz with PBO. Hard to tell. 

i would really like to ask you to try a atleast one ccx 5 ghz overclock but i would understand if you are hesitant (cooler doubts, etc)

[mrdoubtfull]

1 minute ago, eeeee1 said:

 

i would really like to ask you to try a atleast one ccx 5 ghz overclock but i would understand if you are hesitant (cooler doubts, etc)

I sold my previous system to afford it..

 

I went from this:

 

To this:

 

I I'll just upgrade the case and cooling when I have some extra money.. 

 

As for the 5GHz, it won't work. Not on one CCX, not all core or without SMT enabled. I can log into Windows but it crashes when starting r20. 4.8 on one CCX and 4.7 on the other offers slightly better multi core but drops single core (still remains above 600 so not necessarily bad). 

[Jurrunio]

Does higher FCLK work?

[eeeee1]

12 minutes ago, mrdoubtfull said:

I sold my previous system to afford it..

 

I went from this:

 

To this:

 

I I'll just upgrade the case and cooling when I have some extra money.. 

 

As for the 5GHz, it won't work. Not on one CCX, not all core or without SMT enabled. I can log into Windows but it crashes when starting r20. 4.8 on one CCX and 4.7 on the other offers slightly better multi core but drops single core (still remains above 600 so not necessarily bad). 

damn. I mean, its not too much of a downgrade (but i do guess aesthetics did take a big hit)

[-rascal-]

Are you still 1:1 with the Infinity Fabric at DDR4-4000?

Have you tried with higher...yet? (e.g. DDR4-4100, DDR4-4200) ?

[mrdoubtfull]

5 minutes ago, Jurrunio said:

Does higher FCLK work?

Yes, I'm running 2000MHz currently. I tried 4200MHz on the RAM 1:1 and it would post and enter Windows but would crash very quick. Trying a middle ground now, like 4100MHz 1:1.

 

Also, thanks for the RAM help before, doubt the 4x8gb set would have worked as well! 

 

4 minutes ago, -rascal- said:

Are you still 1:1 with the Infinity Fabric at DDR4-4000?

Yes sir. Testing higher now but 4200MHz 1:1 wouldn't work for long. Apparently they're working on a BIOS to help with stability.

 

I've seen someone with the Godlike motherboard achieve 4200MHz 14-14-14-32 1:1 w/IF (if I remember correctly). They're latency in Aida64 is insane! 

[NoCarrier]

38 minutes ago, mrdoubtfull said:

Just sharing for whoever is interested.. 

 

The combination I'm using is a complete beast and I love it! 

 

I have a B550 Gaming Carbon paired with a 5900X and 3080 FTW3. Using a cheap Cooler Master 240mm AIO, for now (sold my water cooled setup to buy everything). 

 

I'm running Crucial Ballistix RGB 3600 C16 (16-18-18-38) micron E die and after a bit of tweaking I can run them at 4000MHz 16-18-18-18-36 2t which results in 2000MHz Infinity Fabric. I'm getting ~55ns on AIDA64 and 8400-8800 r20 multi and 630-644 single.

 

I am manually adjusting the frequency, timings and FCLK.

 

 

So I have the same GPU, and the same RAM on the way (just waiting for a 5900x)... do you have any tips on tweaking the RAM to run at those speeds?    (some bios screenshots would be super helpful) thanks!

 

[mrdoubtfull]

20 minutes ago, NoCarrier said:

 

So I have the same GPU, and the same RAM on the way (just waiting for a 5900x)... do you have any tips on tweaking the RAM to run at those speeds?    (some bios screenshots would be super helpful) thanks!

 

What's your motherboard? 

 

If you get the same memory you'll probably get similar performance. Motherboard choice may impact this but should be pretty close, if anything. 

 

I'm using 1.44v DRAM Voltage currently but I'll try lowering it once I'm done playing with the settings.

 

For MSI BIOS, I used Memory Try It and set it to the 3800MHz 18-18-18-38 setting and then I manually increased frequency to 4000MHz and and IF to 2000MHz to keep it 1:1, then I changed the primary timings to 16-18-16-16-36 without touching the sub timings. If you do sub timings, do them after changing frequency, IF, primary timings and voltage, to ensure you can boot into windows. 

 

Sometimes it's sketchy, if you apply to many, or the wrong combination of settings, it won't post. Where if you do a little here and a little there, you'll get a better outcome.

 

I did try the sub timings and it does help but I haven't tested stability. I used The DRAM calculator for this (you may be able to tweak it further manually). It won't work when trying to set it to 4000MHz so I set it (in the program) to 3800MHz and used all the timings it gave me, I just used it with the 4000MHz frequency I was already running. 

 

Use level 4 for PBO if you have MSI or set it to advanced and increase everything below it to max. I set mine to: