3700X cannot reach 4.4Ghz boost clock. Is it my Motherboard? - Overclock.net - An Overclocking Community

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3700X cannot reach 4.4Ghz boost clock. Is it my Motherboard?

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post #1 of 13 (permalink) Old 07-23-2020, 12:38 PM - Thread Starter
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3700X cannot reach 4.4Ghz boost clock. Is it my Motherboard?

I cannot for the life of me seem to get 4.4Ghz single core boost clock out of my 3700X. I tried testing with cinebench R20 and watching HWiNFO while running the single core bench, and it simply won't push to it. Closest I get is 4.35Ghz.

I have tried:
Clearing CMOS
enabling PBO
Tried it with it PBO "Auto"
Ryzen Balanced Power Plan
Ryzen High Performance
Updating bios and chipset to latest

I am wondering if its my motherboard, I am also wondering if this is normal behavior?

Specs:
Ryzen 3700X
Asus TUF B450M-Plus Gaming
16gb 3000MHz
Stock Wraith Prism Cooler

Am I being overly critical about this? Is this normal behavior? Is my stock cooler keeping me down? Could it be the motherboard?

Just for the record, every thing else runs smoothly, I am just trying to get advertised boost clocks.

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post #2 of 13 (permalink) Old 07-23-2020, 01:05 PM
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you won't see it unless you're idle at the desktop with nothing running.

a single threaded test might only work one thread but you still have Windows doing Windows-y things on the other 7 cores. As far as the CPU is concerned that means it's not working on a single thread workload.

it's been an "issue" since day one:

https://www.extremetech.com/computin...ll-boost-clock

https://www.tomshardware.com/news/am...vey,40291.html

https://www.pcgamesn.com/amd/ryzen-3...-clock-failure

https://venturebeat.com/2019/09/04/a...t-not-for-you/

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post #3 of 13 (permalink) Old 07-23-2020, 03:38 PM
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It will boost one core at a time and fairly briefly. Obviously, it won't boost to that clock speed under heavy work load but it doesn't have to be idle so run a lightly threaded work load; a quick-scan in Defender works pretty well. Since it boosts pretty quickly a faster than normal polling period also helps, I use a polling period of about 500 mSec's in HWInfo. Then look at the multiplier graph for each of the cores and watch which ones boost to 4400.

This assumes you've installed the AMD chipset drivers and are running the Ryzen Balanced power plan. Also helps a lot to set Cool n Quiet, Advanced C-States, Processor CPPC and CPPC Preferred Cores all to ENABLED in BIOS if you haven't.

In truth, the actual performance gain from hitting 4400 is hard to measure and probably not much if you could. The real performance comes from maintaining moderatly elevated clock speeds...4200-4300MHz...under heavier processing loads. That usually means better (than stock) cooling to keep it from dropping back as it gets hot.

Last edited by buddywh; 07-23-2020 at 03:44 PM.
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post #4 of 13 (permalink) Old 07-24-2020, 12:26 AM
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Highest boost clock is also very dependent of temperature. In my sample that is from first batch, at 71c it drops all cores by 100MHz at lest, 83c by 200MHz + while at 62-65c it hits 4.398 on one core. At one time it went over 4.425GHz but later on dropped with different/newer BIOS and AGESA although benchmark scores improved.
I understand that newest 3700x batches behave better by 50-100mhz.

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post #5 of 13 (permalink) Old 07-24-2020, 02:38 AM
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Why not using manual OC?

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post #6 of 13 (permalink) Old 07-24-2020, 03:37 AM
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Quote: Originally Posted by rastaviper View Post
Why not using manual OC?

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Wouldn't get 4.4GHz with OEM cooler and even with best cooler and big win in silicone lottery even 4.35 is difficult.

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post #7 of 13 (permalink) Old 07-24-2020, 05:27 AM
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Quote: Originally Posted by MishelLngelo View Post
Wouldn't get 4.4GHz with OEM cooler and even with best cooler and big win in silicone lottery even 4.35 is difficult.
Not to mention other problems like much higher potential for degradation operating with a fixed voltage/multiplier and probable loss of single threaded performance if not done really carefully even when using a CPU that's a winner in the silicon lottery.

Speaking of being a winner: mine's not one and as well it's an early-lot 3700X (bought in July of '19) so it's definitely not benefiting from improvement due to process maturity. I tweaked PBO on my B450m Mortar using the "EDC=1" bug: it took some doing but it will boost to 4425 on three cores and 4400 on three others pretty reliably in lightly threaded workloads. As I said before the actual benefit to performance isn't really noticeable nor measurable in benchmarks, it's just kinda nice to see it boosting that way.
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post #8 of 13 (permalink) Old 07-24-2020, 05:39 AM
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Quote: Originally Posted by MishelLngelo View Post
Wouldn't get 4.4GHz with OEM cooler and even with best cooler and big win in silicone lottery even 4.35 is difficult.
Wow that's unfortunate.
My 3600x was fine at 4.4ghz with the stock cooler and it was good enough for benchmarks etc. For daily use, I leave it with stock boost that can push the cores till 4.3ghz easily with offset max voltage of 1.3v.
With watercooling I can see 4.550-4.590mhz which is ok only for some benchmarks at 1.46v.

So I guess your CPU is just a mediocre piece, that's all.

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post #9 of 13 (permalink) Old 07-24-2020, 05:46 AM
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Quote: Originally Posted by MishelLngelo View Post
Wouldn't get 4.4GHz with OEM cooler and even with best cooler and big win in silicone lottery even 4.35 is difficult.

Probably can if you disable SMT, that reduces heat density a lot.
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post #10 of 13 (permalink) Old 07-24-2020, 11:44 PM
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Quote: Originally Posted by 2600ryzen View Post
Probably can if you disable SMT, that reduces heat density a lot.
Main goal of OC is to increase performance, not to lower it, Disabling SMT and only in case some substantial OC is achieved would only marginally increase single core performance.

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