Can a 4790 (non-K) CPU replace a 4771 CPU?

Question 1

2 crwdns2873741:0crwdne2873741:0

crwdns2934195:0crwdne2934195:0 iMac Intel 27" EMC 2639 crwdns2933315:02crwdne2933315:0

cyqCYNTVX67

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Dzi 6, 2025

answered Dzi 6, 2025 crwdns2933505:0crwdne2933505:0 cyqCYNTVX67

Question 2

2 crwdns2873741:0crwdne2873741:0

Removing the LCD cable from the back iMac display

iMac Intel 27" EMC 2639 crwdns2933315:02crwdne2933315:0

Jude Taylor

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Kul 18, 2025

answered Kul 18, 2025 crwdns2933505:0crwdne2933505:0 Jude Taylor

Question 3

5 crwdns2873741:0crwdne2873741:0

iMac fan stopped working. Replaced it with new but still not working

crwdns2934195:0crwdne2934195:0 iMac Intel 27" EMC 2639 crwdns2933315:05crwdne2933315:0

Matthieu Delamourd

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Sun 17, 2025

commented Sun 17, 2025 crwdns2933505:0crwdne2933505:0 Matthieu Delamourd

Question 4

5 crwdns2873741:0crwdne2873741:0

Convert 27" iMac into 1U rack case

iMac Intel 27" EMC 2639 crwdns2933315:05crwdne2933315:0

FGV

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N'w 26, 2024

commented N'w 26, 2024 crwdns2933505:0crwdne2933505:0 FGV

Question 5

2 crwdns2873741:0crwdne2873741:0

Bad SMC, CPU socket, sensors or logic board?

crwdns2934195:0crwdne2934195:0 iMac Intel 27" EMC 2639 crwdns2933315:02crwdne2933315:0

jeffphil

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Huk 15, 2024

answered Huk 15, 2024 crwdns2933505:0crwdne2933505:0 jeffphil

Question 6

1 crwdns2930801:0crwdne2930801:0

iMac high CPU usage running very slow by kernel_task

iMac Intel 27" EMC 2639 crwdns2933313:01crwdne2933313:0

Dan 490.1crwdns2936485:0crwdne2936485:0

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Huk 14, 2024

commented Huk 14, 2024 crwdns2933505:0crwdne2933505:0 Dan

Question 7

1 crwdns2930801:0crwdne2930801:0

iMac 27"(Late 2013) A1419 problem (GPU?)

crwdns2934195:0crwdne2934195:0 iMac Intel 27" EMC 2639 crwdns2933313:01crwdne2933313:0

macfannd

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Nhl 16, 2024

commented Nhl 16, 2024 crwdns2933505:0crwdne2933505:0 macfannd

Question 8

3 crwdns2873741:0crwdne2873741:0

Using BootCamp and insalling it on second drive of system.

iMac Intel 27" EMC 2639 crwdns2933315:03crwdne2933315:0

Mark C.

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Ndz 24, 2024

answered Ndz 24, 2024 crwdns2933505:0crwdne2933505:0 Mark C.

Question 9

1 crwdns2930801:0crwdne2930801:0

Difference between LM270WQ1 (SD)(F1) and LM270WQ1 (SD)(F2) displays

crwdns2934195:0crwdne2934195:0 iMac Intel 27" EMC 2639 crwdns2933313:01crwdne2933313:0

amak79 23

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Mha 6, 2024

answer accepted Mha 6, 2024 crwdns2933505:0crwdne2933505:0 amak79

Question 10

1 crwdns2930801:0crwdne2930801:0

How do I restore 1TB Fusion drive data after replacing HDD with SSD?

iMac Intel 27" EMC 2639 crwdns2933313:01crwdne2933313:0

Michel Coste

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Mha 6, 2024

commented Mha 6, 2024 crwdns2933505:0crwdne2933505:0 Michel Coste

Question 11

2 crwdns2873741:0crwdne2873741:0

No chime, no boot, display on, but black - all leds on

iMac Intel 27" EMC 2639 crwdns2933315:02crwdne2933315:0

medoc

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Mha 4, 2024

commented Mha 4, 2024 crwdns2933505:0crwdne2933505:0 medoc

Question 12

1 crwdns2930801:0crwdne2930801:0

How to best diagnose a dead screen vs. the graphic card

iMac Intel 27" EMC 2639 crwdns2933313:01crwdne2933313:0

Zach 5.9crwdns2936485:0crwdne2936485:0

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Maw 22, 2024

answered Maw 22, 2024 crwdns2933505:0crwdne2933505:0 Zach

Question 13

3 crwdns2873741:0crwdne2873741:0

Upgrade to i7 4770S?

crwdns2934195:0crwdne2934195:0 iMac Intel 27" EMC 2639 crwdns2933315:03crwdne2933315:0

Krys

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Kho 30, 2024

answered Kho 30, 2024 crwdns2933505:0crwdne2933505:0 Krys

Question 14

1 crwdns2930801:0crwdne2930801:0

Why iMac gets stuck on every attempt to start it?

iMac Intel 27" EMC 2639 crwdns2933313:01crwdne2933313:0

Dan 490.1crwdns2936485:0crwdne2936485:0

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Mud 31, 2024

commented Mud 31, 2024 crwdns2933505:0crwdne2933505:0 Dan

Question 15

2 crwdns2873741:0crwdne2873741:0

How to disable Mac OS High Sierra Thermal Throttling?

iMac Intel 27" EMC 2639 crwdns2933315:02crwdne2933315:0

Falcon 16 237

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Mud 25, 2024

commented Mud 25, 2024 crwdns2933505:0crwdne2933505:0 Falcon 16

Question 16

4 crwdns2873741:0crwdne2873741:0

Replaced HD with SSD, now get startup chime but only black screen

crwdns2934195:0crwdne2934195:0 iMac Intel 27" EMC 2639 crwdns2933315:04crwdne2933315:0

geoff

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Mud 16, 2024

answered Mud 16, 2024 crwdns2933505:0crwdne2933505:0 geoff

Question 17

1 crwdns2930801:0crwdne2930801:0

How to load Mac OS on new SSD drive

iMac Intel 27" EMC 2639 crwdns2933313:01crwdne2933313:0

Dan 490.1crwdns2936485:0crwdne2936485:0

crwdns2931217:0crwdne2931217:0

Mud 12, 2024

answered Mud 12, 2024 crwdns2933505:0crwdne2933505:0 Dan

Question 18

1 crwdns2930801:0crwdne2930801:0

Determine if there is a SATA SSD or Blade SSD installed

crwdns2934195:0crwdne2934195:0 iMac Intel 27" EMC 2639 crwdns2933313:01crwdne2933313:0

KodaChrome 957

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Dzi 10, 2024

commented Dzi 10, 2024 crwdns2933505:0crwdne2933505:0 KodaChrome

Question 19

1 crwdns2930801:0crwdne2930801:0

iMac 27 inch late-2013 not starting up after upgrades

crwdns2934195:0crwdne2934195:0 iMac Intel 27" EMC 2639 crwdns2933313:01crwdne2933313:0

stephennabet 11

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Dzi 1, 2024

answer accepted Dzi 1, 2024 crwdns2933505:0crwdne2933505:0 stephennabet

Question 20

3 crwdns2873741:0crwdne2873741:0

Boot iMac with no display? Can it be done?

crwdns2934195:0crwdne2934195:0 iMac Intel 27" EMC 2639 crwdns2933315:03crwdne2933315:0

Jacob Mehnert 39.2crwdns2936485:0crwdne2936485:0

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Kul 25, 2024

answer accepted Kul 25, 2024 crwdns2933505:0crwdne2933505:0 Jacob Mehnert

crwdns2944620:0iMac Intel 27" EMC 2639crwdne2944620:0

iMac Intel 27" EMC 2639 crwdns2934277:0crwdne2934277:0