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AMD Ryzen 5000 Builders Thread

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B-Riz

Golden Member
Feb 15, 2011
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Dave3000

Golden Member
Jan 10, 2011
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Will the upcoming 5900x have 12 cores per a CCX (only one CCX), or 6 cores per a CCX (2 CCX's), or will it be 8 cores on one CCX and 4 core on the other CCX (2 CCX's)? I'm debating to myself whether I should go for the 5900x over the 5800x if I mostly use my PC for gaming. Also is memory write bandwidth crippled to half on the 5800x and 5600x like it was with Zen 2 chips below the 3900x or do all Zen 3 chips get full memory write bandwidth this time? So basically the two things I'm wondering about is the cores per a CCX on the 5900x and the memory write bandwidth on the Zen 3 chips below the 5900x.
 

Hitman928

Diamond Member
Apr 15, 2012
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Will the upcoming 5900x have 12 cores per a CCX (only one CCX), or 6 cores per a CCX (2 CCX's), or will it be 8 cores on one CCX and 4 core on the other CCX (2 CCX's)? I'm debating to myself whether I should go for the 5900x over the 5800x if I mostly use my PC for gaming. Also is memory write bandwidth crippled to half on the 5800x and 5600x like it was with Zen 2 chips below the 3900x or do all Zen 3 chips get full memory write bandwidth this time? So basically the two things I'm wondering about is the cores per a CCX on the 5900x and the memory write bandwidth on the Zen 3 chips below the 5900x.
It'll be a 2 x 6 CCX configuration.
 

TitusTroy

Senior member
Dec 17, 2005
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is a 5900X worth the extra $100 over a 5800X if using it primarily for gaming?...will double the cache and 50% more cores make any real difference?
 

Hitman928

Diamond Member
Apr 15, 2012
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So a single 8-core CCX is better than a two 6-core CCX's for gaming, for now and most likely 3-4 years into the future?
is a 5900X worth the extra $100 over a 5800X if using it primarily for gaming?...will double the cache and 50% more cores make any real difference?
We don't know for sure yet because we don't know all the changes that were made for Zen3. For Zen2 it seemed some games did better with 1 CCD (3800x) and other games did better with 2 CCDs (3900x). I would expect the gaming difference between a 5800x and 5900x to be rather small in either direction but we'll have to wait and see from reviews. The longevity question is interesting with the new gen of consoles coming very soon now with way more powerful CPUs than the previous gen. Who knows how much that will translate to needing more CPU on the PC side but my guess is for the next 3-4 years, 8c/16t CPUs should be fine.
 

TitusTroy

Senior member
Dec 17, 2005
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We don't know for sure yet because we don't know all the changes that were made for Zen3. For Zen2 it seemed some games did better with 1 CCD (3800x) and other games did better with 2 CCDs (3900x). I would expect the gaming difference between a 5800x and 5900x to be rather small in either direction but we'll have to wait and see from reviews. The longevity question is interesting with the new gen of consoles coming very soon now with way more powerful CPUs than the previous gen. Who knows how much that will translate to needing more CPU on the PC side but my guess is for the next 3-4 years, 8c/16t CPUs should be fine.
which games did better with 2 CCD's?...I'm curious if it's a specific type of game
 

Hitman928

Diamond Member
Apr 15, 2012
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which games did better with 2 CCD's?...I'm curious if it's a specific type of game
I don't know off hand, I just know that some games had the 3900x higher and some had the 3800x (or even 3700x sometimes) higher. You can check Anandtech's bench section or the last little bit of Hardware Unboxed (youtube) reviews, they will show you how the CPUs did across each game tested without having to click through a bunch of pages or watch the full video.
 

DrMrLordX

Lifer
Apr 27, 2000
16,780
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While most applications typically run at above base clock speeds with Precision Boost 2 enabled, you still have to wonder why we even have a base clock speed under 4 GHz any more.
It's really just there for the suicidal AVX2-heavy applications that drive maximum current.
 

reqq

Member
Feb 26, 2020
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im going 5900x over 5800x over gaming..just because i need to have 12 cores lol.. but i can see 5800x might be faster in some games..but also other way around.. must be scenarios that 5800x needs to wait on a "free" thread while 12 core have more of them right? Then 5900x have doubled cache..not sure if thats helps or not in gaming
 
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Mopetar

Diamond Member
Jan 31, 2011
5,254
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I've been holding off on an upgrade a lot longer than I probably should have but I'm definitely pulling the trigger on a new build now since all of the stars have aligned and I can get really good value on both CPU and GPU all at the same time.

I haven't really started researching yet, but does anyone have a strong opinion on the best board choices for a new ground up build. I've been saving up for quite a while and still have all my stimulus check money so I'm really not too concerned with cost if I'm able to buy something that will serve me well over the next six years.
 

eek2121

Senior member
Aug 2, 2005
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So a single 8-core CCX is better than a two 6-core CCX's for gaming, for now and most likely 3-4 years into the future?
I thought it was interesting that the slides showed the 5900X beating the 5950X in some games.
View attachment 31629
The 5900X has the same amount of L3 cache as the 5950X, which may explain the results above. I can see edge cases where the 5900X beats the 5950X due to this fact.
 

13Gigatons

Diamond Member
Apr 19, 2005
6,921
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AMD is now too expensive....never thought I would see that day. I wish I had stockpiled the 2000 series when they were in clearance. It had plenty of horse power.


154.png
Don't know what makes you laugh at high prices, the 5000 series starts at $300. This makes it harder to build an entire machine from scratch. The 2000 series was pretty good for most people and the price was great.
 

Mopetar

Diamond Member
Jan 31, 2011
5,254
1,866
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View attachment 31758
Don't know what makes you laugh at high prices, the 5000 series starts at $300. This makes it harder to build an entire machine from scratch. The 2000 series was pretty good for most people and the price was great.
As another poster pointed out, we don't have the full stack yet, so it's a bit humorous to get worked up over the cost of building a new machine if you don't have any of the mainstream parts available yet. It'd be a bit like bemoaning the ability to get a new GPU because your only choices are a $700 3080 or a $1,500 3090.

But it's funny in general because AMD was always the "consumer-friendly budget" choice, but now even they're "too expensive" and the solution to this was supposedly stockpiling a bunch of Zen 2 chips, which is a funny thing to do unless you're building a lot of computers to sell to other people. Hoarding half a dozen Zen 2 chips for personal use is humorous notion.
 

Headfoot

Diamond Member
Feb 28, 2008
4,444
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I have accepted that my will is too weak to resist Ryzen 3. I will be getting a 5900x. I recently helped a friend put together an 3600x build because his old machine failed and we have had no end to motherboard issues on X570 with an MSI board, extremely disappointing. That cools my enthusiasm a bit but I'm still going to take the plunge.

After this winter's upgrade cycle my guest computer will have the hand me down 5820k and a 1080 Ti on 1080p which is total overkill...
 

thigobr

Member
Sep 4, 2016
149
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That's very interesting! But it still trailing Renoir, I guess it's a side effect of having a separate I/O die.
I think I will move back to use 4x8GB B-Die then if my current 32GB modules don't scale well.
 

13Gigatons

Diamond Member
Apr 19, 2005
6,921
263
126
But it's funny in general because AMD was always the "consumer-friendly budget" choice, but now even they're "too expensive" and the solution to this was supposedly stockpiling a bunch of Zen 2 chips, which is a funny thing to do unless you're building a lot of computers to sell to other people.
Yes. It's hard selling AMD to regular people, they still only know Intel. The lower prices helped.
CPU: $129
DDR: $59
MB: $85
Case: $75
etc.
 

Kenmitch

Diamond Member
Oct 10, 1999
8,358
2,050
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I recently helped a friend put together an 3600x build because his old machine failed and we have had no end to motherboard issues on X570 with an MSI board, extremely disappointing.
Which MB was it? What issues? I've had good luck with my MSI MB. Only issue I could complain about is loosing my 3800MHz memory overclock with the last 3-4 uEFI versions. No go on the 1900 FCLK anymore for some reason or another. Not sure what they changed, but never gave much effort to seeing if I could get it going again. It'll boot up fine, but it's not stable at all.
 

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