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Ryzen 3000 Memory / Fabric (X370/X470/X570)

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post #81 of 202 (permalink) Old 07-12-2019, 02:37 AM
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Quote: Originally Posted by Heuchler View Post
Igor's Lab has very similar results as elmor. Appreciate the excessive testing
https://www.tomshw.de/2019/07/11/amd...-und-r7-3700x/

Concerning AIDA 64, which did not speak about it in the call, but one of the optimizations brought by Zen 2 is the reduction of the writing from a CCD to the IOD of 32B / cycle to 16B / cycle when the writing bandwidth remains fully provisioned at 32B / cycle. Since workloads have little writing, the link does not need to be 32B wide. This choice of design makes it possible to optimize the energy consumption in other parts of the architecture. In other words, with the 3700X and only one chiplet the observed behavior is normal (and on 3900X with two chiplets you will logically observe higher theoretical writing results).
Did any one tested 3800X writing speeds? if it's 105W TDP vs 65W TDP- maybe it's dual Chiplet design?
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post #82 of 202 (permalink) Old 07-12-2019, 02:52 AM
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Quote: Originally Posted by bigblueshock View Post
https://www.newegg.com/g-skill-16gb-...-217-_-Product

You will see here when it's on Backorder, a different merchant shows up as the seller that actually has it in stock (scrolling all the way down). The $114 is shipped+sold by Newegg (right now on Backorder so it's not the primary sale, but can still buy it. When it comes in stock, will ship). The one for $184 is from a 3rd party seller in-stock.
I see. Heard of rumors RAM prices might go up when it was in the news not long ago that they might come down in price. That would really suck if it comes true.

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post #83 of 202 (permalink) Old 07-12-2019, 02:56 AM
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Quote: Originally Posted by majestynl View Post
Nice, let's hope it passes the 5k-10k! I can remember I had errors around even at those high percentages. Good luck!

PS: I'm curious why Karhu using that much cpu resources, can't remember it did that on 1x and 2x series. The app is also not updated for a while..
Cheers .

At present I have just been interested in getting reasonable stability testing done, more lengthy later, RT has behaved as it does on 3xxx as it did on previous CPUs for me.

TBH, considering that the C7H UEFI is AGESA ComboPi-AM4 1.0.0.2, over the course of ~2 days testing/reruns of say 3533S, 3600S, 3666S I've been impressed how well it has worked. Occasionally when tweaking I got something wrong the "RETRY" button has got me back, so not needed CMOS_CLR, etc.

Last night I did manage to lock myself completely out , I enabled below setting.

Spoiler!


Even CLEAR_CMOS would not get board to POST properly, I had to reflash UEFI to gain back functionality .
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post #84 of 202 (permalink) Old 07-12-2019, 05:11 AM
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OP, you seem to be the right person to ask these questions to.

I'm looking to avoid X570. I already have a X370 Crosshair. Would I benefit from going up to X470 Crosshair, outside of the larger BIOS flash rom? I don't care much about PCIe 4.0.

If the RAM was running at the same speeds on all 3 platforms (2666mhz with same timings for example) would there be a big difference in the performance of the CPU itself? In X370 vs X470 vs X570? It didn't seem like there was a big difference for 2700X with X370 vs X470 for example.

And finally, if I want to run 4 sticks of 16GB 3200mhz Corsair memory (pretty sure it's Hynix).. would I be better off with the X370 in the long run, because it's T-Topology. I'd be hoping to run it at 3200 xmp timings.. or even be happy to drop it back to 2933mhz if it would be 100% stable without needing to overvolt it.

I realise it's hard to answer these questions, since everyone is waiting on more BIOS updates to smooth out all of the bugs and kinks. But is there a gut feeling based on previous years? And how the IMC is supposed to be better this time around?
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post #85 of 202 (permalink) Old 07-12-2019, 06:06 AM
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Quote: Originally Posted by CubanB View Post
OP, you seem to be the right person to ask these questions to.

I'm looking to avoid X570. I already have a X370 Crosshair. Would I benefit from going up to X470 Crosshair, outside of the larger BIOS flash rom? I don't care much about PCIe 4.0.

If the RAM was running at the same speeds on all 3 platforms (2666mhz with same timings for example) would there be a big difference in the performance of the CPU itself? In X370 vs X470 vs X570? It didn't seem like there was a big difference for 2700X with X370 vs X470 for example.

And finally, if I want to run 4 sticks of 16GB 3200mhz Corsair memory (pretty sure it's Hynix).. would I be better off with the X370 in the long run, because it's T-Topology. I'd be hoping to run it at 3200 xmp timings.. or even be happy to drop it back to 2933mhz if it would be 100% stable without needing to overvolt it.

I realise it's hard to answer these questions, since everyone is waiting on more BIOS updates to smooth out all of the bugs and kinks. But is there a gut feeling based on previous years? And how the IMC is supposed to be better this time around?
I am not the OP but I have thought about this as well.

The BIOS support for the various chipset iterations (x370, x470, b350, b450 and x570) seems to be staggered. x570 ist first and then support is delayed ever more, the older the chipset is. So it is not that hard to imagine that support for x370 will be very slow and barebones, if at all.

I fully expect only the necessary updates for x370 and even them will die out rather sooner than later.

x470 support of course will be better, but it will eventually die out, too.

So my plan of action is this:

Wait the first few weeks how support for x370 evolves. If it is weak und insufficient I will switch to x570 and out of principle another brand than x370.
I would regard x470 as a weak option, because even x470 is a second class citizen to x570 and support will never be as good.

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post #86 of 202 (permalink) Old 07-12-2019, 06:11 AM
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PSA: My C7H for some reason defaulted to 1600mhz FCLK when memory was set to 3600mhz (should be 1800mhz). I dont know why it is asynchronous by default. Setting it manually to 1800 improved perf a lot.

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post #87 of 202 (permalink) Old 07-12-2019, 07:25 AM
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Quote: Originally Posted by Jaju123 View Post
PSA: My C7H for some reason defaulted to 1600mhz FCLK when memory was set to 3600mhz (should be 1800mhz). I dont know why it is asynchronous by default. Setting it manually to 1800 improved perf a lot.
Thats how it is, you need to set FCLK (1:1) manually!


Quote: Originally Posted by gupsterg View Post
Cheers .

At present I have just been interested in getting reasonable stability testing done, more lengthy later, RT has behaved as it does on 3xxx as it did on previous CPUs for me.

TBH, considering that the C7H UEFI is AGESA ComboPi-AM4 1.0.0.2, over the course of ~2 days testing/reruns of say 3533S, 3600S, 3666S I've been impressed how well it has worked. Occasionally when tweaking I got something wrong the "RETRY" button has got me back, so not needed CMOS_CLR, etc.

Last night I did manage to lock myself completely out , I enabled below setting.



Even CLEAR_CMOS would not get board to POST properly, I had to reflash UEFI to gain back functionality .

Yeap saw the lock-down on the other thread Im also impressed with results so far!!

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post #88 of 202 (permalink) Old 07-12-2019, 08:09 AM
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Posting here in case anyone can help. When using the AMD Ryzen Balanced plan my CPU seems to be always boosting and the fans spinning up and down with an idle temp of around 55-60C.

I'm running the following setup

Asus Crosshair Vii X470
3700x
Crucial Balistix 16gb (running at xmp standard)

Everything in the bios is set to Auto. When looking in CPU-Z or Ryzen Master the Core voltage is always at 1.4Ghz except for a fraction of a second when it drops to 0.9V & Core speed is always around 4.4Ghz Any suggestions?

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post #89 of 202 (permalink) Old 07-12-2019, 10:20 AM
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Quote: Originally Posted by elmor View Post
Plug and Play Gen4 on X470 apparently. Futuremark System Info doesn't seem to detect PCI-E Gen properly.

Max theoretical bandwidth

PCI-E Gen3 x16 = 0.985*16 = 15.8 GB/s
PCI-E Gen4 x16 = 1.969*16 = 31.5 GB/s

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post #90 of 202 (permalink) Old 07-12-2019, 02:55 PM
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C6H doesn't add 3900x to processor support list

https://www.asus.com/us/Motherboards.../HelpDesk_CPU/

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