[SOLVED] Best Board for 12900K ?

Regev

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Jul 3, 2020
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Hi,

I'm getting a 12900K & 64GB of DDR4 for my programmer, who'll do a lot of compiling on it.

What board and cooler do you recommend to pair it with?

I was thinking the Scythe Fuma RevB, and one of those from Amazon? What do you say:

Gigabyte B660M DS3H
GIGABYTE B660 Gaming X AX DDR4
GIGABYTE B660M AORUS PRO AX DDR4
Gigabyte B660 AORUS Master DDR4
MSI MAG B660M Mortar WiFi DDR4
MSI MAG B660 TOMAHAWK
ASRock B660M Steel Legend
ASRock B660 Pro RS
Asus TUF GAMING B660M-PLUS WIFI

All these cost $200 or less. Any of them can sustain a 12900K (stock) on full-load when compiling code for a lengthy amount of time?

Any other better option?

Thanks
 
Solution
Is the compiler you use highly multithreaded, or does it depend primarily on single thread performance?

For such an important task with a huge discount, why not consider the I9-12900KS which is a highly binned chip that performs better .

For single thread performance, I think the Scythe Fuma RevB would do the job.
It is a twin tower design similar to the Noctua NH-D15.
Noctua thinks the NH-D15 would be ok with a 12900KS:
https://ncc.noctua.at/cpus/model/Intel-Core-i9-12900KS-Special-Edition-1598

If your work can load up most of the 24 threads, then, perhaps stronger liquid cooling and a good case is in order.

On the motherboard, I think you will find that a Z690 based motherboard will work better.
The motherboard VRM cooling...
Has googling for reviews told you anything worthwhile?

Have you compared the various spec sheets side by side to confirm which have the features you MUST have?......Stuff like number and type of hard drive ports, USB ports; monitor connections; audio codec; case fans?

Do you have any particular aversion or attraction to mATX or ATX?

I've done some examination of some of those boards.

I'd choose MSI Mortar over the other MSI.

I'd choose Gigabyte B660M Aorus Pro AX over the other Gigabytes.

Factor in your bad luck and chance. Give that an extra helping.
 
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Regev

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Googling for reviews told me conflicting info - on one site they said the Mortar was good enough to let the 12900K rise to its full stock potential, on another I saw that it fails on torture Prime test. Or is it just a much tougher test than just utilizing the 12900K fully ?

All of them got all the features I need
ATX / mATX - doesn't matter at all.

So, Gigabyte B660M Aorus Pro AX vs MSI Mortar - which one would you pick >? :)
 
Only a small chance anything you will actually do with the PC will approach the loads and temps of the Prime test.

I was attracted to the features of the Gigabyte I mentioned but I have NOT had much luck finding reviews of it...so not sure.

The MSI Mortar seems to have good VRM and heatsink arrangement. You can find a few reviews.

Can't comment on Asus or Asrock.

I wouldn't get in a major lather over the choice. You have no way of knowing what you'd like to know.

You will be taking a leap of faith at the moment you hit the buy button....kinda like a first attempt by a paratrooper. Maybe your chute won't open despite your 100 hours of research. I know you are looking forward to it all.
 
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What about continuously compiling code for hours, how rough would that be compared to the Prime test >?

I'm sure there are coding specialist web sites that would know that to a T.

I'd be quite surprised if the load approached Prime.

Suppose arbitrarily that coding was as "rough" as Prime. How would that necessarily affect your choice?

For all I know, the 12900K isn't the best choice unless budget is totally irrelevant. If budget is irrelevant, you can certainly buy CPUs more powerful than a 12900K.
 

Regev

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For all I know, the 12900K isn't the best choice unless budget is totally irrelevant. If budget is irrelevant, you can certainly buy CPUs more powerful than a 12900K.

I picked the 12900K because I can get all Intel CPUs for 50% off directly from Intel. Given these benefits, is there a better option?

These two boards would be your best option due to their VRM's. I'd look at a 12900 or better yet a 12700.

Why's the 12700 better than the 12900? :O
 

Regev

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Jul 3, 2020
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These two boards would be your best option due to their VRM's.

MSI MAG B660M Mortar WiFi DDR4
MSI MAG B660 TOMAHAWK

Why not the GIGABYTE B660 AORUS Master DDR4 ? Same price, but with a 16+1+1 Twin Hybrid Digital VRM Design, as opposed to MSI's 12+1+1 Duet Rail Power System. Or is MSI just higher quality componets?
 
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Is the compiler you use highly multithreaded, or does it depend primarily on single thread performance?

For such an important task with a huge discount, why not consider the I9-12900KS which is a highly binned chip that performs better .

For single thread performance, I think the Scythe Fuma RevB would do the job.
It is a twin tower design similar to the Noctua NH-D15.
Noctua thinks the NH-D15 would be ok with a 12900KS:
https://ncc.noctua.at/cpus/model/Intel-Core-i9-12900KS-Special-Edition-1598

If your work can load up most of the 24 threads, then, perhaps stronger liquid cooling and a good case is in order.

On the motherboard, I think you will find that a Z690 based motherboard will work better.
The motherboard VRM cooling will be better and the turbo boost capability will be better.
You may need to up your motherboard budget to $250.
 
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Solution

Regev

Commendable
Jul 3, 2020
212
8
1,585
Is the compiler you use highly multithreaded, or does it depend primarily on single thread performance?

For such an important task with a huge discount, why not consider the I9-12900KS which is a highly binned chip that performs better .

For single thread performance, I think the Scythe Fuma RevB would do the job.
It is a twin tower design similar to the Noctua NH-D15.
Noctua thinks the NH-D15 would be ok with a 12900KS:
https://ncc.noctua.at/cpus/model/Intel-Core-i9-12900KS-Special-Edition-1598

If your work can load up most of the 24 threads, then, perhaps stronger liquid cooling and a good case is in order.

On the motherboard, I think you will find that a Z690 based motherboard will work better.
The motherboard VRM cooling will be better and the turbo boost capability will be better.
You may need to up your motherboard budget to $250.

It's the Dart language, using the Google Flutter compiler. How many threads can it utiilize?

Is the Gigabyte Z690 GAMING X DDR4 or MSI PRO Z690-A DDR4 better? I can get them both
 
Dart and Flutter are out of my area of expertise.
Some reading indicates that dart is single threaded, and I suspect that the compiler is also mainly single threaded.

What cpu are you using now?
On the cpu that you are using now, have task manager open while you are doing work.
Select the cpu logical thread view.
If you see all threads mostly at 100% then you can use many threads.
But, if you see only partial use, your work may be more single threaded.
A single threaded app that runs on a 4 core cpu will show 25% utilization.
Windows spreads out the cpu use of a single task among available cores.
If you are using windows 10 or 11, it may decide to use only a single core to maximize performance.
To test your current single thread performance, run the CPU-Z bench tab.
A I9-12900K should show 981.
http://valid.x86.fr/bench/mx5qrf/1

Another way to test might be to reduce the number of processing threads and see how it impacts your compile work. Cut them in half if you currently have 8 or more threads.
You can do this in startup options on the task manager app.

On the z690 motherboards, they are comparable.
I use the MSI PRO Z690-A DDR4 with wifi.
wifi is a useful thing to have on the MSI motherboard since to install lan drivers the msi web site is the easiest way to get them.
I am happy with it. But, I do not push it. It has two 8 pin eps power connectors so I assume they are there in case you need it.
 
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