9th gen cpu in a 6th gen motherboard

[Fuzzleworth1]

Me and my friends are having debate if a 9th gen cpu can go into a motherboard that is from the 6th gen. I said even though it's the same socket it's not the same chipset. He said it would work, who is right?

[mxk]

It won't work. You need an 8th gen and up motherboard for 9th gen. 6th and 7th gen work together but all 4 generations do not intertwine 

[Jurrunio]

it does work if you know how to mod it

[Fasauceome]

The socket is physically the same but electrically different and you can't put a 9th gen CPU into a 6th gen board without BIOS modding and power issues. 

 

Just use pcpartpicker.com's compatibility filter, you'll see.

[GoldenLag]

While it has been shown to work with some BIOS work and pin shenanigans. Its really doesnt work for any normal human being. 

 

Intel had a power consumption concern and with the 9900k on the market, i can say they were probably somewhat right. Even of its really dumb

[Dedayog]

Just now, Jurrunio said:

it does work if you know how to mod it

Doesn't count, as it is a significant change to the architecture, making it a hybrid at best and a totally new board at worst.

[Princess Luna]

9th gen CPU is not compatible with a 6th gen Motherboard, 'out of the box'.

 

Nonetheless, if you alter the 6th gen Motherboard from it's original specifications through modifications it is possible to get things to 'function', just have in mind this involves a great deal of work/hassle, might still not work and even if it does you'll have limitations in place and likely less reliability/longevity from the system.

[Jurrunio]

5 minutes ago, jstudrawa said:

Doesn't count, as it is a significant change to the architecture, making it a hybrid at best and a totally new board at worst.

the question is only "does it work", as long as it can post somehow it should count. What surely doesn't work even on the same socket will be something like P4 era socket 775 boards not working with late Core 2 quads due to FSB differences

[Enderman]

No, you can't put a 9th gen CPU in a 6th gen socket.

There's a reason chipsets have different numbers like Z170 Z270 Z370 etc.

[Dedayog]

Just now, Jurrunio said:

the question is only "does it work", as long as it can post somehow it should count. What surely doesn't work even on the same socket will be something like P4 era socket 775 boards not working with late Core 2 quads due to FSB differences

Oh I'm not saying YOU are wrong, more so that in the spirit of the OP's question... it ain't going to work as they're thinking of just plunking it down on the motherboard.

[Falkentyne]

1 hour ago, Fuzzleworth1 said:

Me and my friends are having debate if a 9th gen cpu can go into a motherboard that is from the 6th gen. I said even though it's the same socket it's not the same chipset. He said it would work, who is right?

6th gen?  If you mean Z170 or Z270, no, it won't work with anything any normal person can do.

It "can" be made to work electrically, but this requires a complicated pin mod so the proper signal pins on the 9900K/9700K get activated, then it requires a VERY complicated bios mod as well, and you may have to avoid updating the Intel management engine firmware also.  You have to insert the 9900K microcodes in the bios, as well as do a mod to extend the # of supported logical "Cores" (not just talking about turbo boost ratios here), otherwise a hyperthreaded chip won't boot.  And the code for this comes from AMI, so even mods from win-raid.com won't work here, if you can't extend the # of maximum cores in the bios (consult win-raid for this)--so you can kiss hyperthreading on a 9900K goodbye.

 

 

 

 

In other words--don't even bother unless you like doing stuff for science.  Do it as a modding experiment, not just because you want to "save money."

[Middcore]

It is technically possible if you want to go through a lot of arcane pin and BIOS modding. It's not worth it.

[Hanzo123]

I know this is an old thread but i don't think i should create a new one. My question is the opposite. Can a 6th gen i7 work on a 9th gen motherboard?

[Dr0y]

I would guess no for the same reasons, pinout is different ... others could correct me if i'm wrong and can elaborate more if i'm right

[Staidey]

On 4/23/2019 at 2:16 PM, Fasauceome said:

The socket is physically the same but electrically different and you can't put a 9th gen CPU into a 6th gen board without BIOS modding and power issues. 

 

Just use pcpartpicker.com's compatibility filter, you'll see.

They are not. The border across 6gen 7 gen and 8 gen 9 gen is soft. Meaning that, it is just a software restriction

There was a Russian guy that modded BIOS on 1151 to run 1151v2 CPU on, once you do that your mobo will be able to run only 8 and 9 gen. In order to run all gens at once, you will need bigger bios flash chip

[Fasauceome]

3 minutes ago, AdkatkaShow said:

They are not. The border across 6gen 7 gen and 8 gen 9 gen is soft. Meaning that, it is just a software restriction

There was a Russian guy that modded BIOS on 1151 to run 1151v2 CPU on, once you do that your mobo will be able to run only 8 and 9 gen. In order to run all gens at once, you will need bigger bios flash chip

The BIOS mod works but that doesn't change the fact that 1151v2 has more ground pins. You cannot push as much power to 8th and 9th gen CPUs on Z170 and Z270 boards, making higher core count CPUs less stable.

 

Quote

This is due to the fact that the pins themselves are different between Coffee Lake and Kaby Lake. The VSS pins move from 377 to 391, with the addition of 14 pins providing that function. The VCC pin count move up from 128 to 146, adding 18. Some of the formerly reserved (RSVD) pins are used up, leaving 25 pins from formerly 46. It is not just the actual power supply on the motherboard, but the pin functions themselves that had to change in order to support Coffee Lake LGA1151 CPUs

https://www.eteknix.com/kabylake-vs-coffee-lake-lga1151-pinout-differences-revealed/amp/

[Staidey]

8 minutes ago, Fasauceome said:

The BIOS mod works but that doesn't change the fact that 1151v2 has more ground pins. You cannot push as much power to 8th and 9th gen CPUs on Z170 and Z270 boards, making higher core count CPUs less stable.

Of course it is, 1151v2 designed to run newer chips, but it does not cancel that Intel just trying to get more money, just by software restricting a board that able to run 8 - 9 gen by simply, modifying a bios

[Fasauceome]

Just now, AdkatkaShow said:

Of course it is, 1151v2 designed to run newer chips, but it does not cancel that Intel just trying to get more money, just by software restricting a board that able to run 8 - 9 gen by simply, modifying bios

I think it's definitely unfair that Intel locked out compatibility but there is a legitimate hardware difference between the sockets that improves performance on 1151V2

[Staidey]

2 minutes ago, Fasauceome said:

I think it's definitely unfair that Intel locked out compatibility but there is a legitimate hardware difference between the sockets that improves performance on 1151V2

If Intel was smart enough, they could just create a new socket.

[Fasauceome]

Just now, AdkatkaShow said:

If Intel was smart enough, they could just create a new socket.

They probably should have just named it something different, the actual pin amount is not important as long as they provide accurate diagrams online. Something as simple as LGA 1152 would have cleared up a lot of confusion.

 

Given their problems with 14nm stock, I think it's safe to say they were trying to find ways to reduce manufacturing costs, and reusing the same socket while rewiring it electrically was probably good to pinch a few pennies. 

[Staidey]

5 hours ago, Fasauceome said:

They probably should have just named it something different, the actual pin amount is not important as long as they provide accurate diagrams online. Something as simple as LGA 1152 would have cleared up a lot of confusion.

 

Given their problems with 14nm stock, I think it's safe to say they were trying to find ways to reduce manufacturing costs, and reusing the same socket while rewiring it electrically was probably good to pinch a few pennies. 

i guess you are right