Regarding possible bottleneck between cpu and gpu.

[Mickey49]

I just wanted to know that will an i9 12900k will face bottlenecking while paired up with a gtx 1660ti.

Purpose is just gaming and video editing.

[Jeppes]

Of course its bottlenecked by the 1660ti. But does it matter?

 

12900K is pretty much the worst value cpu out there. 12700F is barely slower in games and it costs 50% less.

[yonter25]

4 minutes ago, Mickey49 said:

I just wanted to know that will an i9 12900k will face bottlenecking while paired up with a gtx 1660ti.

Purpose is just gaming and video editing.

If possible, I think you could downgrade on the cpu since im not sure how many cores you would need for video editing but for gaming I think 4 or 6 core cpu would do you in this day and age.

[191x7]

Please, if you don't understand how bottlenecking works, please don't share what you think. It can do harm.

 

An i9 12900K will not bottleneck a 1660Ti. In fact, the 1660Ti will be used perfectly.

But half that 12900K can feed the 1660ti to it's full potential, and that 12900K can feed a card that has multiples of the performance of the 1660ti.

[xg32]

the problem is usually cpu bottlenecking gpu, dont really have to worry the other way around, swap cards if needed.

[Jeppes]

7 minutes ago, 191x7 said:

But half that 12900K can feed the 1660ti to it's full potential, and that 12900K can feed a card that has multiples of the performance of the 1660ti.

So the 12900K is bottlenecked by the 1660ti. There will always be a bottleneck.

[191x7]

1 minute ago, Jeppes said:

So the 12900K is bottlenecked by the 1660ti. There will always be a bottleneck.

No it is not.

 

OK, mr expert, tell me, what's so important the CPU can't do without the GPU so it has to wait for it to get it from the GPU?

What is that that a heavily used GPU isn't able to provide (fast enoug) to a strong CPU?

[Jeppes]

1 minute ago, 191x7 said:

What is that that a heavily used GPU isn't able to provide (fast enoug) to a strong CPU?

A higher frame-rate. Just like a slow cpu can make a gpu not reach its full potential in games, a slow gpu can do the exact same thing to a cpu.

[191x7]

7 minutes ago, Jeppes said:

A higher frame-rate. Just like a slow cpu can make a gpu not reach its full potential in games, a slow gpu can do the exact same thing to a cpu.

It does not work that way.

[Somerandomtechyboi]

3 minutes ago, 191x7 said:

It does not work that way.

Ok mr expert now tell me how gpu bottlenecking works and why its not the same as cpu bottleneck?

[191x7]

13 minutes ago, Somerandomtechyboi said:

Ok mr expert now tell me how gpu bottlenecking works and why its not the same as cpu bottleneck?

A part can bottleneck only a part that depends on it. As simple as that. Throughput (or flow) and obstructed throughput (or flow).

 

There are cases when/where a GPU can bottleneck a CPU. For example, special forms of rendering or calculations (simulations) where the CPU has to do the validation.

Not a case in most, if not all, games and game engines.

[Jeppes]

29 minutes ago, 191x7 said:

A part can bottleneck only a part that depends on it. As simple as that. Throughput (or flow) and obstructed throughput (or flow).

 

There are cases when/where a GPU can bottleneck a CPU. For example, special forms of rendering or calculations (simulations) where the CPU has to do the validation.

Not a case in most, if not all, games and game engines.

And that is not the definition for bottlenecking.

[191x7]

2 hours ago, Jeppes said:

And that is not the definition for bottlenecking.

Do tell.

[Jeppes]

1 minute ago, 191x7 said:

Do tell.

"In the context of a PC, a bottleneck refers to a component that limits the potential of other hardware due to differences in the maximum capabilities of the two components."

There you go. Consider yourself freed from Dunning-Kruger with the term.

[191x7]

That is not the definition of a bottleneck in a system, not per any standard. Someone might have come out with the phrase that sounds cool, but sounding cool is not a prerequisite for being accurate. 

A component or a bus (or lane, a connection) can limit the performance or functionality of a component only if the components communicate in the direction that limiting component or lane/bus/connection is used.

Unrelated components can not "bottleneck" each other.

That's not that hard to understand.

Or maybe it is, maybe one should be at least an engineer in the field to be able to understand? I wouldn't know.

Anyone here had access to ieeexplore and the literature?