5900x or 5800x for gaming?

Rom · 21 Oct 2020 at 20:34

As a amd novice, can we compare the 3800 vs the 3900 for an idea of the 5800 vs 5900 ? Are they essentially the older versions, same core and threads etc?

So if a 3800 was better than a 3900 for gaming for example, it may be the case for 5800

Ive just skipped through some benchmark videos, and the 3800 / 3900 / 3950 seem virtually identical in games. A few fps here and there, but nothing more?

Mr Oblong · 21 Oct 2020 at 21:04

Rom said:
As a amd novice, can we compare the 3800 vs the 3900 for an idea of the 5800 vs 5900 ? Are they essentially the older versions, same core and threads etc?

So if a 3800 was better than a 3900 for gaming for example, it may be the case for 5800

Ive just skipped through some benchmark videos, and the 3800 / 3900 / 3950 seem virtually identical in games. A few fps here and there, but nothing more?

Not quite, because the 5800X will have a new feature of having all it's cores on a single CCX (unlike the 5900X) which will reduce latency. We'll need to onsee benchmarks and it may vary by use case.

Rom · 21 Oct 2020 at 23:17

Mr Oblong said:
Not quite, because the 5800X will have a new feature of having all it's cores on a single CCX (unlike the 5900X) which will reduce latency. We'll need to onsee benchmarks and it may vary by use case.

This is all very confusing

Watched some 'simulated' videos, where they ran a 2 cores on each CCX, vs 4 cores on 1 CCX. Was minimal, few fps at most mainly. Though obviously doesnt mean will be the same for next gen.

iamtheoneneo · 21 Oct 2020 at 23:42

Rom said:
This is all very confusing
Watched some 'simulated' videos, where they ran a 2 cores on each CCX, vs 4 cores on 1 CCX. Was minimal, few fps at most mainly. Though obviously doesnt mean will be the same for next gen.

Honestly you just have to wait on this one. Either way I cant see the 3600 losing any steam with the casual gamers due to the price/performance ratio EVEN if these news chips had higher gains.

AMD have kind of created a PR issue with these news chips as you like you say the tendency will be to focus on Number of cores/price ratio. I don't think people are going to be happy if they have to pay more , for less cores unless the performance improvements are well over 15/20%. PC gamers are (rightly) concerned about the next gen requirements and that we are (very likely) going to see an increase in games that will simply use more cores to run effectively.

Joxeon · 22 Oct 2020 at 01:14

Stu said:
You provide good logic, however, I'm sure the head of marketing at AMD thinks pushing the more expensive part during a keynote is the best logic!

Then why not push the 5950X. I mean they did show a few gaming benchmarks with the 5950X but it was slightly behind the 5900X which they called the fastest gaming CPU.

The Old School Gamer · 22 Oct 2020 at 08:25

The only question I pose to myself is what do I need for a PC purely used for gaming.
And I really cannot see any use case where a 6c/12t or 8c/16t processor will not be sufficient.

I just think 12 and 16 core is overkill unless you are doing something else other than gaming.

Joxeon · 22 Oct 2020 at 08:41

The Old School Gamer said:
The only question I pose to myself is what do I need for a PC purely used for gaming.
And I really cannot see any use case where a 6c/12t or 8c/16t processor will not be sufficient.

I just think 12 and 16 core is overkill unless you are doing something else other than gaming.

I'm sure the people buying the 7600K in 2017 thought the same.

Mr Oblong · 22 Oct 2020 at 09:36

Rom said:
This is all very confusing
Watched some 'simulated' videos, where they ran a 2 cores on each CCX, vs 4 cores on 1 CCX. Was minimal, few fps at most mainly. Though obviously doesnt mean will be the same for next gen.

Compare the 3100 vs the 3300X to see the difference a unified CCX can make.

Benches will tell us more, but it's potentially a solid factor.

phil-k · 22 Oct 2020 at 10:33

I wonder if any of the youtube reviewers will get a sample earlier than Nov 5th to test

CuriousTomCat · 22 Oct 2020 at 10:38

If the 5900X has a 6+6 CCX config, then the 5800X will be faster when 8 cores are needed.

If the 5900X has a 8+4 CCX config, then the 5900X will always be faster in everything.

I'm thinking it will be the latter.

Shaolin Chicken · 22 Oct 2020 at 13:17

phil-k said:
I wonder if any of the youtube reviewers will get a sample earlier than Nov 5th to test

I hope so.

alec · 22 Oct 2020 at 13:28

CuriousTomCat said:
If the 5900X has a 6+6 CCX config, then the 5800X will be faster when 8 cores are needed.
If the 5900X has a 8+4 CCX config, then the 5900X will always be faster in everything.
I'm thinking it will be the latter.

There hasn't been asymmetric CCX cpu ever. Don't think 8+4 is even technically possible. And windows scheduler would make a mess of it anyway

5600X > 5800X > 5900X for a gaming machine

amd7674 · 22 Oct 2020 at 13:32

CuriousTomCat said:
If the 5900X has a 6+6 CCX config, then the 5800X will be faster when 8 cores are needed.

If the 5900X has a 8+4 CCX config, then the 5900X will always be faster in everything.

I'm thinking it will be the latter.

I like 8+4 CCX config idea, however I'm 99.99% certain it will be 6+6 CCX config. Look at some info leaked by geekbench tests. For both 5950x and 5900x it shows 2 x 32mb L3 cache pools. Also symmetric design simplifies manufacturing process.

CuriousTomCat · 22 Oct 2020 at 13:57

Well if it's 6+6 then that would explain why it's only £100 more for 50% more cores.

amd7674 · 22 Oct 2020 at 14:03

CuriousTomCat said:
Well if it's 6+6 then that would explain why it's only £100 more for 50% more cores.

or you pay premium for 5800x for having a single CCX. I wish AMD (very smart on their end) would release 5700x (65w 8core). I'm still undecided between buying two 5800x or 5900x for my kids builds. They might be doing some streaming in the background. Also I'm not planning on upgrading their PCs for 4-5yrs. However if price difference will be indeed $100USD, perhaps grabbing 5900x makes more sense. I dunno :confused:

DeathStorm · 22 Oct 2020 at 15:13

amd7674 said:
Also I'm not planning on upgrading their PCs for 4-5yrs.

Odds are you'll probably be able to skip that amount of time even if you bought a 3XXX chip instead so don't stress too much over the choice, just wait for reviews and see which ones meets your needs the best.

ubasti · 22 Oct 2020 at 15:29

Informative thread, thanks (so far as anyone can know right now ahead of third party reviews.

I'm building an eerily identical system for myself currently - even down to the Lancool II - and have been flip flopping between the 5800x and 5900x as well for similar reasons.

BigBANGtheory · 22 Oct 2020 at 15:39

Joxeon said:
Then why not push the 5950X. I mean they did show a few gaming benchmarks with the 5950X but it was slightly behind the 5900X which they called the fastest gaming CPU.

Oh crap was the 5950x lower performance I must have missed that one

Joxeon · 22 Oct 2020 at 16:11

alec said:
There hasn't been asymmetric CCX cpu ever. Don't think 8+4 is even technically possible. And windows scheduler would make a mess of it anyway

5600X > 5800X > 5900X for a gaming machine

18:20-18:45 from the official ryzen 5000 reveal both Robert Hallock and Lisa Su states the 5900X is the best gaming processor in the world so it would look rather odd if the 5600/5800X are faster in games.

BigBANGtheory said:
Oh crap was the 5950x lower performance I must have missed that one

Only like 1~2 fps so not really an issue, ashes shows a 6% boost but I'm guessing it scales better with the extra cores and maybe the same for total war.

alec · 22 Oct 2020 at 16:32

Joxeon said:
18:20-18:45 from the official ryzen 5000 reveal both Robert Hallock and Lisa Su states the 5900X is the best gaming processor in the world so it would look rather odd if the 5600/5800X are faster in games.

Didn't say faster, but better. As currently 3600X is within 3% from 3950X in games, at third of price, similarly performance for 5600X should be very close, at much lower price
And 5800X might end up on top in some games despite lower clocks