OcUK Zen3 review thread

TNA · 8 Nov 2020 at 18:10

Purgatory said:

Humbug and co will not agree with his conclusion!

I find the memory thing more of a fun thing to do and benchmark than anything else personally. Yeah some apps or games may benefit, but at 4K (what I game at) that hardly applies to many. I think there is something nice about running the infinity fabric at 2000, even if it only nets you 1% performance or there abouts

Purgatory · 8 Nov 2020 at 18:14

FoxEye said:
Between this and Gamer's Nexus, it seems that the best memory kit for a Zen 3 is 2x 16GB @ 3200-14-14-14-34.

There seems to be no reason to get anything else?

TNA said:
Humbug and co will not agree with his conclusion!

I find the memory thing more of a fun thing to do and benchmark than anything else personally. Yeah some apps or games may benefit, but at 4K (what I game at) that hardly applies to many. I think there is something nice about running the infinity fabric at 2000, even if it only nets you 1% performance or there abouts

Basically same as Zen 2, but no surprise as it uses the same i.o chip, just the chiplets are different this time round. So basically save your money and buy 3200mhz or 3600mhz for normal use, for tinkering the sky is the limit but you won't get any benefits but maybe fun to try I guess. For normal use as we see no difference from Zen 2 so gives all wondering what to get an idea now.

I like this guys reviews he doesn't mess about and his zen 3 review I think is best and more accurate than others and some of the big trusted tech youtubers are now starting to make hype videos, smells like they are getting paid threw back door or free products for videos.. Anyways his reviews make sense and are logical, compare his results for Zen 3 with other reviews to see what I mean.

Nabeshogun · 8 Nov 2020 at 18:17

Didn't gamer's nexus have a video showing that you can (weirdly) get more performance some of the time in zen 3 by using 4 sticks of ram for some reason ... admittedly I'm not presently invested enough to have paid it much attention...

Purgatory · 8 Nov 2020 at 18:19

Nabeshogun said:
Didn't gamer's nexus have a video showing that you can (weirdly) get more performance some of the time in zen 3 by using 4 sticks of ram for some reason ... admittedly I'm not presently invested enough to have paid it much attention...

Zen 2 is same 4 sticks normally give slightly better performance depending on the topology of your motherboard RAM sockets too.

Worth having a read here about motherboard topology for ram sockets :-

https://www.sapphirenation.net/ram-guide-trouble-with-memory-part-1

Also a video here (in the link above too) :-

FoxEye · 8 Nov 2020 at 18:22

Nabeshogun said:
Didn't gamer's nexus have a video showing that you can (weirdly) get more performance some of the time in zen 3 by using 4 sticks of ram for some reason ... admittedly I'm not presently invested enough to have paid it much attention...

They also said (referring to one of their technical advisors) that 2x 16GB is potentially better than 4x 8. Their own testing revealed that 4x 8 was better than 2x 8, but if you watch to the end they said that 2x 16 might be better (not due to extra RAM capacity but due to Zen's memory controller).

Nabeshogun · 8 Nov 2020 at 18:26

Sorta sounds like it needs a bit more testing or understanding or something ... though personally I'd hope 2 x 16 would be better that way you'd still be able to populate some extra slots later if you need to without ditching what you've got (provided you can find stuff that matches) ... though 32 gigs is more than I'd need atm for gaming, but I guess I sometimes do have more than 3 tabs of chrome open, haha.

Grim5 · 8 Nov 2020 at 19:36

FoxEye said:
Between this and Gamer's Nexus, it seems that the best memory kit for a Zen 3 is 2x 16GB @ 3200-14-14-14-34.

There seems to be no reason to get anything else?

or 4x8gb kit with the same timings and frequency, whichever is cheaper

FoxEye · 8 Nov 2020 at 19:39

Grim5 said:
or 4x8gb kit with the same timings and frequency, whichever is cheaper

Looking around it's out of stock just about everywhere anyhow.. I think the universe is trying to tell me not to buy a new PC, heh.

Was looking at the G.Skill TridentZ (CL14 aka B-die) and it's either OOS everywhere or some chancer trying to sell it for £350 lol.

TNA · 8 Nov 2020 at 21:44

FoxEye said:
. I think the universe is trying to tell me not to buy a new PC, heh.

Heh. No need, you do a pretty good job of that all by yourself. Lol.

Rofflay · 11 Nov 2020 at 01:04

denigor777 said:
It's a microsecond The symbol for microsecond is "μs". The "u" has a little tail.
A thousand microseconds makes a millisecond. A thousand nanoseconds makes a microsecond.

Ultraseconds sounds cooler I admit, but us engineers cannot let these things pass

Thanks now it finally makes sense!

Also fellers, The ram 4x8 or 2x16 has anyone tested which has lower latency? This would be Aida ns rating and Latencymon. I bet one has a lower figure so for me that one would be the superior gaming choice.

jigger · 11 Nov 2020 at 01:11

Nabeshogun said:
Sorta sounds like it needs a bit more testing or understanding or something ... though personally I'd hope 2 x 16 would be better that way you'd still be able to populate some extra slots later if you need to without ditching what you've got (provided you can find stuff that matches) ... though 32 gigs is more than I'd need atm for gaming, but I guess I sometimes do have more than 3 tabs of chrome open, haha.

First we need the Microcode and BOIS updates, but 70Gb/s seems within reach.

CAT-THE-FIFTH · 25 Nov 2020 at 15:24

SAM is not only coming to Intel and Nvidia,but also to Zen2:
https://www.extremetech.com/gaming/...ccess-memory-support-to-intel-nvidia-hardware
https://www.guru3d.com/news-story/n...s-memory-functionality-for-x470-and-b450.html

pete910 · 28 Nov 2020 at 22:40

ffs it's been around since 2013, For some reason it's only just been used for gaming GPUs

Edit,
Windows since 2017

CAT-THE-FIFTH · 28 Nov 2020 at 22:57

pete910 said:
ffs it's been around since 2013, For some reason it's only just been used for gaming GPUs

Edit,
Windows since 2017

Its been on Linux for a while too(apparently).

Hotwired · 28 Nov 2020 at 23:36

Not convinced anyone gave a dam about it on linux.

10,000x more mentions since AMD found a useful angle for it for gaming.

pete910 · 29 Nov 2020 at 10:18

CAT-THE-FIFTH said:
Its been on Linux for a while too(apparently).

Yeah, that's what I originally was stating. Then added when windows added it.

Here's Zen 2

Code:

[    0.208426] pci 0000:10:00.0: BAR 0: assigned to efifb
[    2.513911] amdgpu 0000:10:00.0: BAR 2: releasing [mem 0x7ff0000000-0x7ff01fffff 64bit pref]
[    2.513913] amdgpu 0000:10:00.0: BAR 0: releasing [mem 0x7fe0000000-0x7fefffffff 64bit pref]
[    2.513934] pcieport 0000:0f:00.0: BAR 15: releasing [mem 0x7fe0000000-0x7ff01fffff 64bit pref]
[    2.513936] pcieport 0000:0e:00.0: BAR 15: releasing [mem 0x7fe0000000-0x7ff01fffff 64bit pref]
[    2.513938] pcieport 0000:00:03.1: BAR 15: releasing [mem 0x7fe0000000-0x7ff01fffff 64bit pref]
[    2.513948] pcieport 0000:00:03.1: BAR 15: assigned [mem 0xa00000000-0xfffffffff 64bit pref]
[    2.513951] pcieport 0000:0e:00.0: BAR 15: assigned [mem 0xa00000000-0xfffffffff 64bit pref]
[    2.513953] pcieport 0000:0f:00.0: BAR 15: assigned [mem 0xa00000000-0xfffffffff 64bit pref]
[    2.513957] amdgpu 0000:10:00.0: BAR 0: assigned [mem 0xc00000000-0xfffffffff 64bit pref]
[    2.513967] amdgpu 0000:10:00.0: BAR 2: assigned [mem 0xa00000000-0xa001fffff 64bit pref]
[    2.514046] [drm] Detected VRAM RAM=16368M, BAR=16384M

CAT-THE-FIFTH · 29 Nov 2020 at 14:21

pete910 said:

Yeah, that's what I originally was stating. Then added when windows added it.

Here's Zen 2

Code:

[    0.208426] pci 0000:10:00.0: BAR 0: assigned to efifb
[    2.513911] amdgpu 0000:10:00.0: BAR 2: releasing [mem 0x7ff0000000-0x7ff01fffff 64bit pref]
[    2.513913] amdgpu 0000:10:00.0: BAR 0: releasing [mem 0x7fe0000000-0x7fefffffff 64bit pref]
[    2.513934] pcieport 0000:0f:00.0: BAR 15: releasing [mem 0x7fe0000000-0x7ff01fffff 64bit pref]
[    2.513936] pcieport 0000:0e:00.0: BAR 15: releasing [mem 0x7fe0000000-0x7ff01fffff 64bit pref]
[    2.513938] pcieport 0000:00:03.1: BAR 15: releasing [mem 0x7fe0000000-0x7ff01fffff 64bit pref]
[    2.513948] pcieport 0000:00:03.1: BAR 15: assigned [mem 0xa00000000-0xfffffffff 64bit pref]
[    2.513951] pcieport 0000:0e:00.0: BAR 15: assigned [mem 0xa00000000-0xfffffffff 64bit pref]
[    2.513953] pcieport 0000:0f:00.0: BAR 15: assigned [mem 0xa00000000-0xfffffffff 64bit pref]
[    2.513957] amdgpu 0000:10:00.0: BAR 0: assigned [mem 0xc00000000-0xfffffffff 64bit pref]
[    2.513967] amdgpu 0000:10:00.0: BAR 2: assigned [mem 0xa00000000-0xa001fffff 64bit pref]
[    2.514046] [drm] Detected VRAM RAM=16368M, BAR=16384M

There was a post on Phoronix talking about how AMD had added supported for Zen2 and earlier AMD GPUs already:
https://www.phoronix.com/forums/for...e-amd-radeon-rx-6000-series/page4#post1215694

Miganto · 13 Dec 2020 at 14:00

Is there any news out there on the non x's? I've only seen that they may be in Q1 2021

Can a mod move this post to this forum thread instead, I had the wrong one open, it's more fitting;

https://www.overclockers.co.uk/foru...-series-rumored-17-ipc-gain.18874127/page-391

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OcUK Zen3 review thread

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