Can I use an Intel "K" processor in late 2013 Haswell iMac?

[dmrowley]

I am a pretty techy guy, I've built every pc I ever had, but those photo's sent chills down my spine. Just thinking about about cracking open my 27" scares me, but now I have a plan for when my Applecare is up......

Congrats brave tinkerer!!

 

[cynics]

I am a pretty techy guy, I've built every pc I ever had, but those photo's sent chills down my spine. Just thinking about about cracking open my 27" scares me, but now I have a plan for when my Applecare is up......



Congrats brave tinkerer!!

Lol I'm the same way! I work on electronics daily difference being it's not MY electronics I'm working on. The thought of cracking open my 2013/14 iMac sends chills down my spine. RAM and external SSD will be the limit of my tinkering until the AppleCare+ expires.

I applaud anyone else brave enough to do this mod on such a new machine.

 

[paukivbashne]

so i take it as no one tried 4770k
i guess im going to be the first one to try it
cant find 4771

 

[cynics]

so i take it as no one tried 4770k
i guess im going to be the first one to try it
cant find 4771

Keep us updated if you go through with it!

 

[paukivbashne]

its done and it worked.
Core i7 4770k confirmed working on imac 27 haswell

 

[alxn91]

Picture??

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its done and it worked.
Core i7 4770k confirmed working on imac 27 haswell

Picture???

 

[MrGIS]

.

 

[cynics]

Curious about benchmarks and such

 

[quagmire]

Curious about benchmarks and such

That would only be useful if he can over clock it in OS X. Or will you only get the ability to over clock it in Windows?

 

[paukivbashne]

Picture??

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Picture???

it shows 3.5 core i7
doesn't indicate if its core i7 4771 or 4770k

 

[h9826790]

How about MacCPUID?

It should able to show something like this.

 

[yjchua95]

it shows 3.5 core i7
doesn't indicate if its core i7 4771 or 4770k

Type this in Terminal: sysctl -n machdep.cpu.brand_string

 

[paukivbashne]

Type this in Terminal: sysctl -n machdep.cpu.brand_string

Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz

 

[yjchua95]

Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz

Well it worked

Are you running ML or Mavericks?

 

[paukivbashne]

How about MacCPUID?

It should able to show something like this.
Image

odd but i just saw your message.
i was building it up for i client so i dont have it anymore with me
i personally not a fan of imac...had them bunch but always gave up for macbook retina.
once you see that screen its hard to work on anything less then retina)

yjchua95
Mavericks

 

[Supersoberguy]

I'm sorry to necropost, but it was THIS very thread that inspired me for the upgrade of my Late 2013 iMac with 3.4 Ghz i5 4670 to 3.5 Ghz i7 4770K. Along the way I also upgraded to blade pcie SSD and cleaned dust from the LCD from bottom corners that was starting to get annoying.

I opened up and upgraded the CPU and installed SSD in no time. The only thing that was time consuming was the LCD dust cleaning. I had to go through the process a couple of times to have it perfectly clean and nice.

A big thanks goes to CompanionCube for inspiring for this brave doing of opening up an iMac. Another big thanks goes to paukivbashne for confirming the 4770K (which performs better than 4771 and is easier and cheaper to find).

I'll post some pics from the upgrade process as well as some Geekbench results.

 

[Eduard01]

@Supersoberguy hi! i saw your post nice work men also we can see that you use APPLE blade SSD but from newer model (SSUBX - still 16+12pin) PCIe 3.0 4x. If my informations are correct Imac late 2013 use older SSUAX 16+12pin which is only 2x.

Can I ask you if you had some troubles with installing newer ssd apple 4 gen. ssd instead of 3rd gen. and what speed write/read you have for example in blackmagic disk etc.

THX for answer


If somebody else know the answer please reply

I want to use similar 256gb SSUBX in my imac 14.2 - 27" late 2013 only with aluminium heatsink model number: MZ-JPV256R/0A1 - and i am not sure if it will work together i am trying to find solution more than week.

 

[Supersoberguy]

@Supersoberguy hi! i saw your post nice work men also we can see that you use APPLE blade SSD but from newer model (SSUBX - still 16+12pin) PCIe 3.0 4x. If my informations are correct Imac late 2013 use older SSUAX 16+12pin which is only 2x.

Can I ask you if you had some troubles with installing newer ssd apple 4 gen. ssd instead of 3rd gen. and what speed write/read you have for example in blackmagic disk etc.

THX for answer


If somebody else know the answer please reply

I want to use similar 256gb SSUBX in my imac 14.2 - 27" late 2013 only with aluminium heatsink model number: MZ-JPV256R/0A1 - and i am not sure if it will work together i am trying to find solution more than week.

@Eduard01 sorry for posting the reply so late - don't have time to check macrumours regularly.
Yes, this blade SSD was taken from a 2015 rMBP, a guy was selling it dirt cheap, since his rMBP died on him. I took it.
This SSD worked perfectly fine. I have a spare 15" rMBP 2015. I put new SSD into this rMBP, check if it was working. Installed High Sierra on it. Then put it into the iMac. The only difference is in the speed of reading/writing. On rMBP they were around 1500/1300ish MB/s, and on iMac they are around 750 MB/s. But that is the PCIe limitation of the iMac, not the SSD's.
I hope this information will help you.

PS: Aura Pro X2 SSD's are now available for a reasonable price for bigger storages (if only I found them earlier, I would have put one of them inside my iMac). They work with iMac's some iMac's, check for compatibility. I will upgrade to them, once my current 256 Gb will become a limitation for my usage.