Should I disable the second CCD on my 7900X?

[Vario]

Is disabling CCD the new disabling ecores?

 

[lexluthermiester]

Is disabling CCD the new disabling ecores?

Not really. The OP was asking for input on an idea they had.

 

[wheresmycar]

The Zen 5 X3D's will have 2 3D dies so you won't need to disable anything on them, either. They'll behave just like the normal R9's.

Is that officially confirmed by AMD?

 

[Dr. Dro]

Is that officially confirmed by AMD?

TPU ran a story on it last month. AMD's usually tight lipped until the actual launch event, and they're scheduled for November 7 so just gotta wait a week or so for us to know for real. But being this close to launch and no evidence against it, looks to be the case

AMD Ryzen 9 9950X3D and 9900X3D to Feature 3D V-cache on Both CCD Chiplets

Earlier this week, we got rumors that AMD is rushing in the Ryzen 7 9800X3D 8-core/16-thread "Zen 5" processor with 3D V-cache for a late-October debut. The 9800X3D succeeds the popular 7800X3D, and AMD probably hopes it will have a competitive gaming processor in time for Intel's Core Ultra...

www.techpowerup.com

 

[wheresmycar]

TPU ran a story on it last month. AMD's usually tight lipped until the actual launch event, and they're scheduled for November 7 so just gotta wait a week or so for us to know for real. But being this close to launch and no evidence against it, looks to be the case

AMD Ryzen 9 9950X3D and 9900X3D to Feature 3D V-cache on Both CCD Chiplets

Earlier this week, we got rumors that AMD is rushing in the Ryzen 7 9800X3D 8-core/16-thread "Zen 5" processor with 3D V-cache for a late-October debut. The 9800X3D succeeds the popular 7800X3D, and AMD probably hopes it will have a competitive gaming processor in time for Intel's Core Ultra...

www.techpowerup.com

x2 3D-CCD = potentially 192MB cache With AMD holding onto the gaming performance crown, i can already see some strategic dial-back gimp'ism on clock speeds or perhaps less cache per CCD which would still amount to something. Or, maybe increased cache and power/thermal sensitivities will naturally command some cut backs elsewhere.

 

[Dr. Dro]

x2 3D-CCD = potentially 192MB cache With AMD holding onto the gaming performance crown, i can already see some strategic dial-back gimp'ism on clock speeds or perhaps less cache per CCD which would still amount to something. Or, maybe increased cache and power/thermal sensitivities will naturally command some cut backs elsewhere.

Me thinks they'll just charge accordingly, that way the non-3D processor doesn't become redundant like the 7950X did. Still, if that can be had for ~800, i think it's worth it

 

[Ruru]

I'd rather sell it and get a 7500F than cripple it myself.

Reminds me of Sandy Bridge era when people bought a 2600K and then disabled its HT. Just why (2M extra L3 wasn't worth 50% more price).

 

[phanbuey]

use process lasso.

also put high performance priority and power plan boost - depending on game makes huge difference. Best of all worlds. It remembers cores SMT settings, priority etc. Really helps windows not to suck.

 

[Kapone33]

No, I will not. And I have repeatedly told you, I don't care about your feelings. My only compromise is with the truth, not allegiance with a corporation or making up stories to make myself feel better about my purchasing decisions.



Exactly. Even then, disabling CCD1 entirely should not be necessary on the 7900X. The Zen 5 X3D's will have 2 3D dies so you won't need to disable anything on them, either. They'll behave just like the normal R9's.

Yep my feelings were hurt. That is why I spent all day Gaming.BTW this is the truth.

 

[Dr. Dro]

Yep my feelings were hurt. That is why I spent all day Gaming.BTW this is the truth.
View attachment 369206

So, am I supposed to be impressed or something

I'd rather sell it and get a 7500F than cripple it myself.

Reminds me of Sandy Bridge era when people bought a 2600K and then disabled its HT. Just why (2M extra L3 wasn't worth 50% more price).

Yup! At least you'd pocket 200 bucks

It's funny how back then the i5 and i7 were about the same because cache mattered so little past 6 MB, the lack of HT hurt those way more than the cache size. Modern software truly is interesting, I wonder if they've become so ravenous for memory bandwidth because it's written targeting many more cores than back in the day.

 

[Kapone33]

So, am I supposed to be impressed or something

Not impressed but sardonic. You see this is the pattern. You make some uninformed comment about AMD. I respond and you double down on your narrative. Just like how when I asked how much a nanosecond is you suddenly moved to topology. Well if you look at the picture I posted notice the amount of cache that the CPU has and realize that everything you say about AMD is pure conjecture. You base your GPU analysis on the 5000 series cards and act like Ryzen has not been an unmitigated success. Even if you refuse to believe see how much Intel believed that they gave in and used the same vendor AMD uses to get their next CPU to the market. You make it seem like Dual CCD CPUs have some kind of disability but I can tell you with confidence that a 5900X is just as fast as a 5800X3D (not 1% lows) in most Games and since raw performance still matters 24 threads is faster than 16 threads especially when 12 of those threads can run at 5.65 GHz. I know most people are convinced that the 7800X3D is the cat's meow but there are Games out there that use more than 8 cores. City Skylines 2 comes to mind.

 

[Dr. Dro]

Not impressed but sardonic. You see this is the pattern. You make some uninformed comment about AMD. I respond and you double down on your narrative. Just like how when I asked how much a nanosecond is you suddenly moved to topology. Well if you look at the picture I posted notice the amount of cache that the CPU has and realize that everything you say about AMD is pure conjecture. You base your GPU analysis on the 5000 series cards and act like Ryzen has not been an unmitigated success. Even if you refuse to believe see how much Intel believed that they gave in and used the same vendor AMD uses to get their next CPU to the market. You make it seem like Dual CCD CPUs have some kind of disability but I can tell you with confidence that a 5900X is just as fast as a 5800X3D (not 1% lows) in most Games and since raw performance still matters 24 threads is faster than 16 threads especially when 12 of those threads can run at 5.65 GHz. I know most people are convinced that the 7800X3D is the cat's meow but there are Games out there that use more than 8 cores. City Skylines 2 comes to mind.

No, dual CCD CPUs don't have a disability, yours does due to its internal topology and it's time you stop pretending your 7900X3D is special and unaffected by the issues that made this the single most unpopular processor in the entire Ryzen lineup! Once the 9800X3D comes out, go out and buy one. You'll see the difference is night and day - you might not notice it at first on account of having a 7900 XT, it's not really a particularly fast graphics card - but it's going to be a much better chip, as is the 7800X3D. I'm not uninformed, you're in denial because you're neck deep in a sunk cost fallacy, and you're an admitted fanboy. In other words, you are guided by emotion and not by facts - and that makes you look completely unreasonable.

This has been discussed with you ad nauseam by multiple forum members, we get it that you're "happy with the result", as you rightly should - it's a bloody 12 core processor - but it doesn't change the fact that it's the slowest of the Zen 4 3D chips for gaming, and that AMD is not the faultless angel you portray them as. Please stop pretending otherwise. That's the entire problem

 

[mama]

I'm just going to keep the 12 cores enabled. Thanks. I don't care about an extra 5fps if that.

I'm good. Carry on.

Other than a mild undervolt, I've done nothing to my 7900X and hasn't faltered on anything I've thrown at it.

 

[Kapone33]

No, dual CCD CPUs don't have a disability, yours does due to its internal topology and it's time you stop pretending your 7900X3D is special and unaffected by the issues that made this the single most unpopular processor in the entire Ryzen lineup! Once the 9800X3D comes out, go out and buy one. You'll see the difference is night and day - you might not notice it at first on account of having a 7900 XT, it's not really a particularly fast graphics card - but it's going to be a much better chip, as is the 7800X3D. I'm not uninformed, you're in denial because you're neck deep in a sunk cost fallacy, and you're an admitted fanboy. In other words, you are guided by emotion and not by facts - and that makes you look completely unreasonable.

This has been discussed with you ad nauseam by multiple forum members, we get it that you're "happy with the result", as you rightly should - it's a bloody 12 core processor - but it doesn't change the fact that it's the slowest of the Zen 4 3D chips for gaming, and that AMD is not the faultless angel you portray them as. Please stop pretending otherwise. That's the entire problem

You almost made me fallout of my chair. You are the one making it seem like the 7900X3D is the worst with your new topology argument. I don't think my CPU is some kind of unicorn but they are more expensive today than when I bought mine. If you think a 7900XT is not a fast Graphics card you are showing what you know. You should read some reviews and see where the 7900XT is in pure raster.You act like technology does not improve over time. Do you really think that the monthly updates have made the 7900XT slower since it launched? Then you don't know about AMD's fine wine. I am not the only person on TPU with a 7900X3D that I am enjoying.

You are like those people that pounded on the 6500XT for no decoder when it was less than half a 6600 in cost. Supported 120hz and idles at 2 watts.

 

[Dr. Dro]

You almost made me fallout of my chair. You are the one making it seem like the 7900X3D is the worst with your new topology argument. I don't think my CPU is some kind of unicorn but they are more expensive today than when I bought mine. If you think a 7900XT is not a fast Graphics card you are showing what you know. You should read some reviews and see where the 7900XT is in pure raster.You act like technology does not improve over time. Do you really think that the monthly updates have made the 7900XT slower since it launched? Then you don't know about AMD's fine wine. I am not the only person on TPU with a 7900X3D that I am enjoying.

You are like those people that pounded on the 6500XT for no decoder when it was less than half a 6600 in cost. Supported 120hz and idles at 2 watts.

Honestly dude no one cares. Go ahead and keep defending your subpar hardware just because it's AMD. The other guys already quit engaging with you and I should have done the same a long time ago.

I just find this little fantasy world of yours where AMD is king, Lisa Su is a religious leader and where cryptocurrency mining is still profitable way too entertaining to stop - really you're cracked and your stupidity knows no bounds - but by now even I had enough. There's plenty other diehard AMD fans here for you to exchange attention and validation with, start a cool kids club with them or something and leave the rest of us alone, since posting arguments in good faith, professional and amateur reviews as well as technical data doesn't satisfy you.

Go enjoy your "amazing" AMD hardware in peace if you like it that much. The amount of time you spend on internet forums defending your purchases is simply unhealthy.

 

[Kapone33]

Honestly dude no one cares. Go ahead and keep defending your subpar hardware just because it's AMD. The other guys already quit engaging with you and I should have done the same a long time ago.

I just find this little fantasy world of yours where AMD is king, Lisa Su is a religious leader and where cryptocurrency mining is still profitable way too entertaining to stop - really you're cracked and your stupidity knows no bounds - but by now even I had enough. There's plenty other diehard AMD fans here for you to exchange attention and validation with, start a cool kids club with them or something and leave the rest of us alone, since posting arguments in good faith, professional and amateur reviews as well as technical data doesn't satisfy you.

Go enjoy your "amazing" AMD hardware in peace if you like it that much. The amount of time you spend on internet forums defending your purchases is simply unhealthy.

Triggered are we? Who is expressing feelings now. I could care less about you thinking that because AMD has given us more than Intel( there are only 2) and yes Lisa Su deserves to be commended for where she has led AMD. That is not some schoolboy faction comment. Look at the stock price. It is not my fault that you think CPU mining is a non factor but this year I have made several thousand doing exactly that but you can go on hating on it. Let's keep in mind that this is an AMD focused thread.

If you go back you are the one that started the whole thing in the first place. I love how latency changed to topology and you took your sword off of latency and injected it into topology.

The best though. Is here is you theorizing negatively about how a CPU should perform and telling someone that owns one that they don't know what they are talking about because it does not fit into your narrative. What is the expression? Those who live in Glass houses. So yes when someone makes an uninformed comment on a AMD focused thread. As an AMD user I have every right to give you my opinion but I am basing my opinion on experience. You don't have to tell me to enjoy my AMD system. I work from Home.

 

[Dr. Dro]

Triggered are we? Who is expressing feelings now. I could care less about you thinking that because AMD has given us more than Intel( there are only 2) and yes Lisa Su deserves to be commended for where she has led AMD. That is not some schoolboy faction comment. Look at the stock price. It is not my fault that you think CPU mining is a non factor but this year I have made several thousand doing exactly that but you can go on hating on it. Let's keep in mind that this is an AMD focused thread.

If you go back you are the one that started the whole thing in the first place. I love how latency changed to topology and you took your sword off of latency and injected it into topology.

The best though. Is here is you theorizing negatively about how a CPU should perform and telling someone that owns one that they don't know what they are talking about because it does not fit into your narrative. What is the expression? Those who live in Glass houses. So yes when someone makes an uninformed comment on a AMD focused thread. As an AMD user I have every right to give you my opinion but I am basing my opinion on experience. You don't have to tell me to enjoy my AMD system. I work from Home.

Whatever you say. We've hijacked the poor thread enough. You'll never change your mind because you genuinely don't understand and you're genuinely not interested in technical details, so I'm not going to argue with you anymore.

 

[Kapone33]

Whatever you say. We've hijacked the poor thread enough. You'll never change your mind because you genuinely don't understand and you're genuinely not interested in technical details, so I'm not going to argue with you anymore.

Can you be more technical when talking about details than when I posted the HWinfo Summary? You have derailed the thread. Don't project that on to me. The OP already has a Dual CCD chip.

 

[Hecate91]

Go enjoy your "amazing" AMD hardware in peace if you like it that much. The amount of time you spend on internet forums defending your purchases is simply unhealthy.

There were people in this thread enjoying their AMD hardware until the bashing started, and the same can be said for attacking other people's purchases which doesn't seem healthy at all.

 

[Dr. Dro]

attacking other people's purchases which doesn't seem healthy at all.

Have you read the thread? There was no bashing anywhere regarding the original subject of the thread. Let's just end this squabble here I don't want anyone getting points or being booted from the thread because we can't stop bickering

I'm out

 

[Vya Domus]

No, the latency thing has no real impact on anything.

No, dual CCD CPUs don't have a disability, yours does due to its internal topology and it's time you stop pretending your 7900X3D is special and unaffected by the issues that made this the single most unpopular processor in the entire Ryzen lineup! Once the 9800X3D comes out, go out and buy one.

7900X3D is no more disabled than an Intel CPU with E cores enabled, both the 7900X3D and 7950X3D are unpopular because there is little overlap between the consumers obsessed with getting a gazillion FPS in CSGO or something and those who also need a lot of MT performance, it's not because it sucks, 7900X3D is still faster than a regular 7900X.

 

[Dr. Dro]

No, the latency thing has no real impact on anything.


7900X3D is no more disabled than an Intel CPU with E cores enabled, both the 7900X3D and 7950X3D are unpopular because there is little overlap between the consumers obsessed with getting a gazillion FPS in CSGO or something and those who also need a lot of MT performance, it's not because it sucks, 7900X3D is still faster than a regular 7900X.

Yet, for gaming, which is where the whole contested statement is concerned, the 7800X3D walks on it

I appreciate your good faith post, and I generally agree with you, but this is why off-topic squabbling is a problem, we just end up arguing in half and it ends misleading people.

 

[Chrispy_]

I have a leftover 5900X in my HTPC that replaced a 5800X and all I use it for is gaming, so it was technically a downgrade.

Notably, in most gaming bencmarks the 5900X is faster than a 5600X, which is what the 5900X becomes if you disable half the cores, but the difference between those is pretty small and likely down to the simple fact that a 5900X running with just 6 cores still gets the default TDP (142W PPT) whilst the 5600X running at default TDP only gets an 88W PPT. I'm pretty sure if I set a 5600X and a 5900X with 6 cores disabled to the same TDP they'd be indistinguishable.

Have I disabled 6 cores on my gaming-only 5900X?
No.

Is it slower?
Maybe by a few percent and only in those ridiculously-rare CPU-heavy turn-based titles that aren't GPU bottlenecked.

Do I care?
Absolutely not. The 5800X went to a person who actually needed the 5800X, and the 5900X is easier to cool when the 142W PPT is spread over two CCDs instead of one, which means I can dial back the fans a little bit more and get even closer than before to this system being totally inaudible under full load.

 

[Vya Domus]

Yet, for gaming, which is where the whole contested statement is concerned, the 7800X3D walks on it

Yeah but you are forgetting that it has 2 less cores with a V chance, you're pretending that the asymmetric topologic is the only possible explanation on why it's slower, which is just not accurate.

 

[Dr. Dro]

Yeah but you are forgetting that it has 2 less cores with a V chance, you're pretending that the asymmetric topologic is the only possible explanation on why it's slower, which is just not accurate.

The whole discussion concerns gaming performance only, the asymmetric topology + the fact that it's 6+6 with unbalanced configuration (3D cycle penalties + lower clocks + inefficient resource scheduling by OS) result in a compound effect and that is what causes its diminished gaming performance, that's why disabling either CCD restores most of it. For work, the 7900X3D is certainly the superior choice. Naturally, as stated earlier in the thread, this doesn't concern and doesn't affect the normal 7900/7900X and its predecessor because the resource imbalance isn't there. It's a combination of multiple issues, the assymmetric topology is a part of it.