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My poor 3900x experience upgrading from i7-4790k

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post #1 of 47 (permalink) Old 08-04-2019, 11:15 PM - Thread Starter
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My poor 3900x experience upgrading from i7-4790k

This is a copy-paste from my reddit post. I hope to fix my 3900x with its poor perfromance by going back to AGESA 1.0.0.2. I'm using Asus C7H with 1.0.0.3AB bios (2602) and ram oc'ed: https://i.ibb.co/9vLfrvb/3733best.jpg


Quote:
This is not purely a CPU comparison. My purpose was to see how much of a difference it will make on my normal usage with all the apps running in background like xbox/steam/epic/battle.net/origin/bitdefender etc. So this was not a clean install or in benchmark mode. By clean install i meant the OS is new installed that too on the 970 evo plus, but all the apps and programs installed as i used it before. Not just benchmarking apps to get the highest scores.


I oc'ed my 3900x to 4.2ghz all-core as well tightening the ram at 3733mhz. The i7-4790k had an all-core oc of 4.6ghz. My MSI 2080 X Trio with +70core/+1000mem and Predator XB271HU 1440p 165hz G-Sync remained the same. Nvidia driver was 461.30 for both comparisons. For 3900x i'm using 1.07.29.0115 chipset driver with 1.0.0.3AB AGESA bios (2602 for C7H). I'd didn't want to use older ones even if some say they performed better as i firmly like to keep everything latest and updated.


It hasn't been easy to make 3900x work properly out of the box. The chipset drivers and bios are not mature enough i think for the not so impressive performance in gaming even with same GPU and driver. Some background apps can have a huge effect on its single-threaded performance. For example when i had just setup the PC, single-core CPUZ bench score was around 545 but now its just 516. This is even after removing apps like Aura Sync, I-cue etc. Of course benchmarks that can fully use the cores showed massive gains.


Even though Avg and Max FPS dropped for most of the games, Min FPS did increase for more than half of the games and the biggest benefit was that it was all micro-stutter free. Two best examples are the battle scene in FF:XV benchmark where Shiva is summoned and Deus Ex: Mankind Divided bench. Even if the scores didn't show there was micro-stutter easily observable on my 4790k.


All the benchmarks below:
https://docs.google.com/spreadsheets...it?usp=sharing



So this has been a mixed bag. The main improvement for me has been the freedom from very annoying micro-stutter probably from consistent min fps and cpu not being a bottleneck. I'm pretty sure if i went with i9-9900K, there would have been much more gains in gaming. But i bought 3900x to future-proof for the next 5 years at least like the 4790k before. As its always said get the best gpu you can in your budget and a cpu that can run it. If i was going all-new build then i probably would have went 3700x+2080ti instead.
Will definitely run the benchmarks again when improved chipset drivers and bios with better AGESA updates are available.


Edit: people saying the 4.2 all core is an underclock, it's not. I ran at stock and the benchmarks were even lower. You don't know how many times i re-ran benchmarks and trying to debug the low performance so i could show the 3900x trumping 4790k, i just couldn't. I made a thread few days back asking for the low performance and found out that background apps have so much effect on the processor. Maybe it is the broken Agesa 1.0.0.3AB so will be rerunning the benchmarks on 1.0.0.2.


I did get 3900x seeing all the release benchmarks too but didn't know how just normal usage with the apps you normally run can lower the performance so much. I didn't buy it just to bench on a clean os with only benchmarking apps installed.

Quote:
Edit 2: i will install 1.0.0.2 and re-run the benchmarks and compare again.


https://www.reddit.com/r/Amd/comments/cm21yb/going_from_4790k_to_3900x_my_benchmarks/



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post #2 of 47 (permalink) Old 08-04-2019, 11:36 PM
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Clean Windows install?
I think something could be wrong with your setup, because i get only 5 FPS less (CPU-GAME) @ 95% in SotTR and this with an 3600 @ only 3.4GHz!
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post #3 of 47 (permalink) Old 08-04-2019, 11:47 PM
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I'm waiting on 3900X to be re-stocked too, now you got me worried.

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post #4 of 47 (permalink) Old 08-04-2019, 11:57 PM
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If i clock not only @ 3.4GHz but with PBO enabled with an offset of -0.06V for the CPU, i get ~ +20% more min FPS and ~ +15% 95% FPS for CPU Game compared to my 3.4GHz setting.
So in short, i am 10% faster with the 3600... Maybe you need to optimize your RAM better, can you post a Screenshot of Ryzen Master, so i can see your timings?
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post #5 of 47 (permalink) Old 08-05-2019, 12:06 AM
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all-core OC probably is not the best way to go for your scenario and best to leave "stock" (just turn on PBO and all those other knobs, but leave multiplier and volts alone). make sure to max out your FCLK 1:1 with your RAM. run 3800MHz CL14 and 1900MHz FCLK if you can. if you really want to min/max your CPU performance, you will need to do per-CCX overclocking. you might have a CCX that can run 4.55GHz "all core" stable just fine, but other CCX's might suck and only do 4.2GHz max, so you would be stuck with a true all core oc of 4.2GHz. doign a per-ccx OC would bring up performance, especially in single thread.

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post #6 of 47 (permalink) Old 08-05-2019, 12:15 AM
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Oh dear, my is also haswell. I was expecting ryzem 3000 will be better than that. Amd has at least 10% better ipc, and you add in faster memory more cache etc, i expected 4.2ghz Ryzen 3900x to beat 4.6ghz haswell in games, and then we profit from 12 cores on other tasks.

Was expecting total win for amd here.

Perhaps you can do clean install first and then do per ccx oc.

Is there any channel site that review max oc Ryzen 3000 against the past generations of Intel cores?
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post #7 of 47 (permalink) Old 08-05-2019, 12:17 AM
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Ok i made a run with 100% your settings 1440p with everything maxed out + SMAAx4 too ofc.
CPU wise everything fine for you, but yor GPU is running like crap, there is something not ok... (or your VRAM is not enough maybe)
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post #8 of 47 (permalink) Old 08-05-2019, 12:27 AM
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Quote: Originally Posted by Duvar View Post
Ok i made a run with 100% your settings 1440p with everything maxed out + SMAAx4 too ofc.
CPU wise everything fine for you, but yor GPU is running like crap, there is something not ok... (or your VRAM is not enough maybe)
Sorry, op, off topic. You are able to run your R5 at 4300MHz?

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post #9 of 47 (permalink) Old 08-05-2019, 12:44 AM
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Its with PBO ON and Auto OC, but under heavy load like CB R20 it will drop to 4.1-4.125GHz with this setting. With manual OC on all cores without drops 4.2GHz =1.308V, 4.25GHz=1.382V
My chip is done @ 4.25GHz, i could do 4.3 allcore, but with 1.5V+ i guess^^ 24/7 running @ 3.4GHz(0.9V) with 3800CL16 RAM(1.36V)
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post #10 of 47 (permalink) Old 08-05-2019, 01:15 AM - Thread Starter
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Quote: Originally Posted by dansi View Post
Oh dear, my is also haswell. I was expecting ryzem 3000 will be better than that. Amd has at least 10% better ipc, and you add in faster memory more cache etc, i expected 4.2ghz Ryzen 3900x to beat 4.6ghz haswell in games, and then we profit from 12 cores on other tasks.

Was expecting total win for amd here.

Perhaps you can do clean install first and then do per ccx oc.

Is there any channel site that review max oc Ryzen 3000 against the past generations of Intel cores?

It was a clean install. 3rd time actually trying to fix the low performance. I just installed all the apps i run like steam, battle.net, origin, epic, xbox, bitdefender etc. The same i ran on my 4790k.


Quote: Originally Posted by Duvar View Post
Ok i made a run with 100% your settings 1440p with everything maxed out + SMAAx4 too ofc.
CPU wise everything fine for you, but yor GPU is running like crap, there is something not ok... (or your VRAM is not enough maybe)

The driver and clocks were exactly the same so i don't understand the drop. It means it's the chipset drivers or the terrible agesa.



I got the performance when it was a fresh install with nothing installed. Like i said then i git 545-550 single core score in CpuZ bench. But when everything was setup with all apps installed the performance degraded. On a fresh Windows install the realbench inage editing score was 220k but with everything setup it dropped to 180-190k.

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