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I5 8400 upgrade?

Lol wut, a 12400 can keep up with the 5600X, and it will be fairly cheap. Why buy a 14nm process Skylake CPU in 2021/2022?

12700K / KF if you want 8 large cores + 4 'Comet Lake' equivalent cores, clocked lower.

What’s wrong with 14nm exactly? Alderlake is Skylake on 10nm.

I don’t think the 12400kf will beat the 5600X looking at the proposed spec.
 
Nope, Alder Lake = Alder Lake. Do we need to go over this again :rolleyes:

Seriously, just wait a few more days for reviews then you can argue with me if you like.
 
Nope, Alder Lake = Alder Lake. Do we need to go over this again :rolleyes:

Seriously, just wait a few more days for reviews then you can argue with me if you like.

Alderlake = rehashed Skylake (4c ring bus) plus Intel Atom cores.

What is wrong with 14nm though.
 
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The problem with 14nm is that it was a fabrication process developed in 2014. Intel's current 10nm allows transistor densities over 100 million transistors per mm squared. Without process improvement, Intel was stuck with yearly Skylake refreshes, the last main physical change was making the CPU die thinner with Comet Lake.

They are making the die even thinner with Alder Lake, to improve thermal performance.

Intel tried a new architecture on 14nm (Rocket Lake) and it was fairly disastrous.
 
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The problem with 14nm is that it was a fabrication process developed in 2014. Intel's current 10nm allows transistor densities over 100 million transistors per mm squared.

Yeah, we know 14nm has hung around 5 years too long and Intel have only just got Skylake to 10nm. 10nm is also 5 years late.
 
Sorry, when I said persistent, I actually meant obtuse :)

Are you sure, final answer?

Skylake was meant to be released on 10nm in 2016. 10nm got refined into a mobile node and is best suited to 4 core notebook chips. We finally get 10nm Skylake in 2021 in a 4 core x2 configuration with 8 atom cores now called Alderlake.

How do you feel?
 
I'd recommend upgrading to an 8 core CPU, as this is what the latest consoles have. 10 or 12 cores wlll offer an improvement too, but this is often more to do with the upgraded cache amounts than the core counts, at least in games - Zen 3 + vcache will see improvements here even with 6/8 cores though.
 
That's not gaming though is it? Which is what I'm looking to upgrade for.

Userbenchmark shows +11% for game EFPS
You might want to double check any advice from 4K8KW10. ;)

The 9900K is really not the best for you to upgrade to for several reasons. While your Z370P D3 can accommodate a 9900K, due to the phase count and VRM's it has then it might struggle with the power demands of the 9900K. Also as you are gaming then you really don't need the extra that Hyperthreading gives as HT only really kicks in once all real cores are fully used. For these reasons you are much, much better off getting a 9700K/KF.

The 9700K/KF (without the on chip GPU) will give you pretty much exactly the same improvement for gaming of the 9900K without the extra heat and expense.

9700K's go for ~£180 and will probably start dropping towards £150 with Alderlake coming out in the next week and people upgrading to that, then with your i5 8400 going for ~£80 that's ~£100 outlay. If you want to stop bottlenecking your 3070 then I suspect this is the most cost effective way of doing so.

I've had the I5 8400 and the I7 9700K with its two extra cores and extra nearly 1000Mhz per core does make quite a difference. Plus you should get one of the later R0 stepping's (it will say SRG15 on the CPU for 9700k or SRG16 on the 9700KF) then 5Ghz all core should be a breeze, even on your Z370. i.e.

https://www.anandtech.com/show/13400/intel-9th-gen-core-i9-9900k-i7-9700k-i5-9600k-review/22

PS. In games I play my 9700K came out slightly ahead of my Ryzen 5800X running at 5Ghz with tuned memory at 3800Mhz C14, which shows you the potential in the 9700K.
 
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I'd recommend upgrading to an 8 core CPU, as this is what the latest consoles have. 10 or 12 cores wlll offer an improvement too, but this is often more to do with the upgraded cache amounts than the core counts, at least in games - Zen 3 + vcache will see improvements here even with 6/8 cores though.

We might not see V-Cache 6-8 cores looking at how Alderlake is shaping up.
 
I have the feeling my cpu is a bottleneck for the GPU.

The best bet would be to actually check if you are being bottlenecked :)

Even if you are being bottlenecked, do you actually need to upgrade? Are you unhappy with your framerates, or unable to run certain games?
 
I tend to suspect his assessment is correct as I remember there were times that my i5 8400 was a bottleneck to my 1080Ti.

The RTX 3070 will definitely bottleneck. The i5 8400 and RTX 3070 is pretty ugly hardware combination TBH.

But even if it does bottleneck, it doesn't matter assuming the OP is happy with performance.

People need to get out of this instant bottleneck=upgrade mindset.
 
But even if it does bottleneck, it doesn't matter assuming the OP is happy with performance.

People need to get out of this instant bottleneck=upgrade mindset.

If you’re happy with paying for a RTX 3070 and getting GTX 1080 performance then sure.

I can’t see that idea catching on myself.

Looks like an RTX 3070 needs at least a 5600X - 5800X.
 
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