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【Maxon】Cinebench R20 Benchmark Thread

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Head1985

Golden Member
Jul 8, 2014
1,783
530
136
Yeah I raised it to 1.475v and I'm pulling that when I use the profile and it seems fine.
I have the Noctua NH-D15, in the CoolerMaster H500P Mesh case.
I have some pictures of it here if you're interested.
1,475v???Your cpu will degrade very fast.Max safe voltage for 24/7 is 1.32v.
 

DrMrLordX

Lifer
Apr 27, 2000
16,371
5,281
136
2700x is no more "monolithic" than a 3900x. The two CCXs are separated by IF links. Look at intercore latency tests to see what I mean.
 

nicalandia

Senior member
Jan 10, 2019
262
184
76
2700x is no more "monolithic" than a 3900x. The two CCXs are separated by IF links. Look at intercore latency tests to see what I mean.
True

would be nice to see more scores of 8C/8T Zen/Zen+ and Zen 2 on CB R20,

Strangely enough this 2x2 with SMT Off Zen processor(1200) shows nearly perfect scaling.

 

Kenmitch

Diamond Member
Oct 10, 1999
8,070
1,348
126
True

would be nice to see more scores of 8C/8T Zen/Zen+ and Zen 2 on CB R20,

Strangely enough this 2x2 with SMT Off Zen processor(1200) shows nearly perfect scaling.

Here's my 3700x with PBO enabled and SMT turned off.

1566497658605.png

I didn't lock the clocks so the single core did boost higher. Does your cpu exhibit the same behavior?
 

Hitman928

Platinum Member
Apr 15, 2012
2,773
2,123
136
Yeah, you can't compare the MP ratio between CPUs without taking the boost behavior into account. If you want to just see how well Cinebench scales from single to multiple cores between different CPUs, you'll need to make sure the frequency is static and not changing between the single and multi-core test.
 

nicalandia

Senior member
Jan 10, 2019
262
184
76
Here's my 3700x with PBO enabled and SMT turned off.

I didn't lock the clocks so the single core did boost higher. Does your cpu exhibit the same behavior?
Without Locking the Clocks it looks like 93% Core scaling, please take a moment to lock the clocks(anything from 3.8 to 4 Ghz would be good since we are after core scaling at lock speed) and see how much that improves.
 

Kenmitch

Diamond Member
Oct 10, 1999
8,070
1,348
126
Without Locking the Clocks it looks like 93% Core scaling, please take a moment to lock the clocks(anything from 3.8 to 4 Ghz would be good since we are after core scaling at lock speed) and see how much that improves.
Locked at 4.0 GHz

SMT OFF

1566569671137.png

Same clocks SMT ON

1566569701768.png
 
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nicalandia

Senior member
Jan 10, 2019
262
184
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Locked at 4.0 GHz

SMT OFF

Same clocks SMT ON
455 ST if 100% CPU scalling the number would have been 3640, but at 96% we get the number 3492(really good numbers) with SMT On we can see it gets a boost of 36% which is IMHO an amazing boost in performance. Thanks for posting this
 
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DrMrLordX

Lifer
Apr 27, 2000
16,371
5,281
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Yeah I also prefer ccx overclocking vs all-core as it allows the CPU to down-volt at idle.
Hmm, mine can drop voltage even when going for all-core static. Maybe it won't do that if you set a hard voltage in the UEFI? I'm using Ryzen Master for everything these days.
 

lopri

Elite Member
Jul 27, 2002
12,841
325
126
It would be really interesting to know why user: lopri is getting worst CPU(94%) and SMT Scaling(28%),
Your guess is as good as mine. Don't forget that these CPUs have higher ST boost clocks than MT boost clocks.
 

nicalandia

Senior member
Jan 10, 2019
262
184
76
Your guess is as good as mine. Don't forget that these CPUs have higher ST boost clocks than MT boost clocks.
It must be an algorithm issue since you don't have a Flat OC it's taking ST x MT = MP ratio, any chance that you do a Flat OC run? Even at 3.8 OC I believe we will see the true numbers
 

Markfw

CPU Moderator, VC&G Moderator, Elite Member
Super Moderator
May 16, 2002
20,601
8,455
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7025 and 497 3900x, 3600 memory stock, 1800 fclk

Bad...On my new x570 motherboard with the latest bios and all driver updates !
 

DrMrLordX

Lifer
Apr 27, 2000
16,371
5,281
136
@Markfw

I've gotten a lot of results that low running stock on my system. With 1.0.0.3ABB and the latest chipset drivers, my boost clocks have been pretty low unless I start playing silly games with LLC.
 

Markfw

CPU Moderator, VC&G Moderator, Elite Member
Super Moderator
May 16, 2002
20,601
8,455
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OK, EPYC 7742 (but says ES) running@2.6 ghz. 2nd run was 20,977 ! And max SYSTEM power draw from the wall was 275 watts ! And I have 2 NVME drives.

 
Last edited:

EXCellR8

Diamond Member
Sep 1, 2010
3,750
673
126
this one slightly lower:



Happy to report my temps are better though, CPU never went over 58c during the multi-core test :)
 
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