Can I upgrade the processor to C2D Extreme X7900 @ 2.8GHz ?

It's all ok! :-)

I work with iMac 8 hours per day and don't have any problem!

It's totally recomended to change the CPU ! I install Lion and works perfectly.

⟐ Commented July 18, 2023 at 19:39 MST

⟐ Answer deleted June 29, 2022 at 10:33 MST

Does anyone see any problem with this being able to work after the upgrades are in place?

So with the macOS 10.12.4 beta 1 and beta 2 the iSight camera doesn't work on our 2007 iMacs. It shows up in hardware but won't turn on. I am working on how to fix this.

Also, If you want Night Shift to work on our iMacs you can use clover boot loader with a smbios to trick the iMac into thinking it is a late 2013. You will have to apply a fix for USB because changing it to a late 2013 iMac smbios breaks all but one USB and also bluetooth (which is considered to be on an internal USB port) the patch that I have fixes all this. If anyone is interested let me know and ill make a right up.

I’m thinking of making some videos to post on youtube at my channel Nandor690. I do AppleTV stuff right now but I think I'm going to also get into making videos on hackintoshes and unsupported real Macs as well

I have figured out how to get Night Shift to work natively (Without using clover or doing any crazy hacks). Ill be posting a write up on this thread.

I'm still working on getting iSight working on 10.12.4 beta 1 and 2. Will keep everyone updated.

What I am working on now.

As you know, macOS 10.12.4 comes with the new feature Night Shift. But it doesn't work on our iMacs because they don't support Metal. late 2012 iMac is the first year for that.

I used Clover boot loader to make a smbios for a 2012 iMac and now my iMac thinks its a 2012 and night shift works!

A few draw backs are

• 2 of the 3 USB ports don’t work
• Bluetooth doesn’t work
• iSight camera doesn’t work.

I am working on fixes for these now. (Remember, those things don't work because I made my iMac think it is a 2012 instead of a 2007. NOT because I updated to 10.12.4. It is safe to update.

I’ll report back when I have fixes ready. I plan on setting up a couple threads in different forums and will link them here for you guys

⟐ Commented October 16, 2021 at 1:52 MST

My first thought is blown power supply. Second, damaged motherboard. Need info. on diagnosis procedures, repair, ect.

Thanks! JMP

⟐ Commented July 02, 2021 at 14:22 MST

⟐ Answered March 30, 2020 at 1:49 MST

⟐ Answer accepted February 09, 2015 at 22:45 MST

I've searched A LOT on Google and it seem's ok, it'll fit on the socket and all but I don't know if it'll have any heating issues - for that I'm thinking about buying the 24" CPU heatsink as well, will it fit?

No, unfortunately I don't have the money to just buy another iMac so my only option will be to upgrade mine - if that's possible, of course. :)

Any help here?

Well, I already bought the processor (fingers crossed hehehe) and now I ask you guys: does anyone knows if the heatsink of the 24" iMac will fit a 20" iMac?

I'm asking 'cause my only "source" are pictures on the internet and by what I've seen on those I'm really in doubt.

Here's the 24"heatsink:

http://tinyurl.com/4m8k7a5

Here's the 20"heatsink:

http://tinyurl.com/468os42

And here is the 20" iMac with it's own heatsink where you might get an idea of the space available:

http://tinyurl.com/4tt5dj9

By those pics I think there is a chance it will fit, but also there's a big chance it won't, does anyone know for sure?

Thanks!

== Final Update 09/18/2011==

Well, it took about 9 hours, but it's finally done! :D

To be fair, it should be ~6 hours, but the video card wouldn't work (no surprises as it was really a gamble - it was a ATI Radeon HD2600 but from a HP 8510W) so I had to start over from the beginning.

To those thinking about doing the same, know that this is real hard work - and I don't mean only the hours!

Granted it isn't as challenging - and scary - as changing the wi-fi antenna in my iBook G4 12" but it was so hard that I was sweating most of the time and got some blisters of blood in my fingers.

I don't remember hating something so much as I hate those "bleeping" Torx screws! Darn!!

Anyway, here are the tools I used with the parts I bought on eBay:

http://img823.imageshack.us/img823/6158/...

Now the before and after screenshots:

Before - http://img845.imageshack.us/img845/783/b...

After - http://img714.imageshack.us/img714/7852/...

One other thing I knew before hand was that I would need to adapt the 2,5" HDD where it was the 3,5" HDD so I improvised some sort of bracket. But it turns out that the holes in this iMac's HDD are different from the ones in the HDD I used as a model, so I had to improvise in the improvisation :P

http://img692.imageshack.us/img692/9209/...

Oh and credit where it's due: I would've never done that if it weren't for the guides I found here. Honest!

So thank you guys at iFit, you didn't make the job easier, but certainlly made it possible - and less risky! :)

And last, but not least: yeah, now it's WAAAY faster!! :D

⟐ Edited December 13, 2013 at 8:09 MST

⟐ Commented December 11, 2022 at 20:43 MST

It appears that it sounds like the hard drive is still going, but not everytime.

I have reset the RAM, CTRL, ALT p-r does nothing. Unplugged power for a day, still white screen.

Is there anything I can do myself? I am a technician and this Mac has been brought into the shop. If I can do something, good, if not where to send it for a quote?

Thank you all.

⟐ Answered April 23, 2021 at 7:04 MST

⟐ Answer deleted November 28, 2017 at 8:47 MST

I'm wondering if it could be the power supply or possibly power switch?

⟐ Commented September 09, 2020 at 15:04 MST

I have been upgrading all possible components of my early 2006 iMac (HDD and optical drive) with help from iFixit. My next venture is to upgrade the CD CPU to C2D CPU. I know this is possible as it's socketed. I have found a "tutorial" on MacLife to do this but am wondering if anyone here has done it and might have some advice/tips on the best (easiest) way to undertake such a daunting task.

⟐ Commented November 28, 2018 at 17:46 MST

I am trying to diagnose the issue with my iMac. The only sign of life is the number 1 LED on the logic board.

This light does not come on if either the invertor or AC Line Filter are disconnected from the power supply. My iPhone does not charge if connected.

I got another power supply from ebay and am getting the same symptoms with this one.

Is there anything else I can try to diagnose the issue?

Many thanks

Dan

⟐ Commented December 18, 2019 at 12:45 MST

Problem: iMac freezes but I'm still able to move mouse cursor but can't use mouse to select/quit programs, no response from iMac to mouse or keyboard commands. Otherwise iMac running fine. Any suggestions?

FYI: Activity monitor shows minimal load on Memory & CPU.

Thanks in advance.

Mike

07/24/14

UPDATE:

1. Put back old ram is not on option. I no longer have it.

2. Drive is compatible.

3. Firmware is up to date.

4. No solution yet.

UPDATE:

HD = Fujitsu MHY2080BH 2.5-Inch 80GB 5400 RPM SATA I (1.5 Gb/s)

⟐ Commented October 11, 2019 at 3:37 MST

⟐ Answer edited November 07, 2019 at 16:30 MST

So I will be replacing one of the existing 1 GB chips with the new 2GB chip.

Does it make a difference a) which 1GB chip I replace or b) which of the two slots I install the new 2GB chip?

Thanks.

David B

⟐ Commented March 29, 2011 at 14:39 MST

I tried resetting the SMC, PRAM etc ... then realized that the keyboard was not communicating with the computer. I double checked the keyboard on my home iMac and it worked just fine, but nothing with my office computer.

Brought my office system home to trouble shoot. Checked LED lights and all but number 4 are lit. I checked all cables and connections and everything appears to be fine. The machine powers up and the DVD drive engages but then nothing happens. No boot chime of any kind. I can hear the HDD running and I removed and checked the RAM, no change.

I tried using an external monitor and hooking my computer up through target mode, my iMac and the external monitor did not find the computer because the ports are not communication? Without a working keyboard how do I speak to the computer.

I finally replaced the video/graphics card with a used but warrantied replacement unit that I purchased online. I followed every step precisely. Crossed my fingers and turned it on and nothing.

I have had it turned off for two weeks now trying to come up with my next move. Today I turned it on and still nothing. It powers on but the computer does not turn on.

Any suggestions or direction would be very much appreciated.

I just wanted to update everyone on the status of my machine. I have finally got it back up and running!!!! I am so excited. The logic board was truly the missing piece to the puzzle. I received the part in the mail saturday and had time this evening to work on it. I put the last screw in place, plugged it in and held my breath. The sound of that chime was music to my ears :0) It is working like a champ. A bit slower then I remember haha....but I think I can finally put that larger hard drive in now. That will be the icing on the cake. Knock on wood that nothing goes wrong with that. But after all that I have been through so far, it should be a walk in the park. Thank you Meyer for all your guidance and support. And I can't thank the people at applepartsexchange enough for providing me with the logic board. A good ending to a long and interesting journey.

⟐ Commented October 06, 2017 at 18:05 MST

Can it be replaced?

If it is the case, will it be so expensive that I should instead buy a brand new computer?

Any help would be greatly appreciated!

⟐ Answer accepted June 17, 2014 at 21:16 MST

No problem for the RAM, but the CPU upgrade is more difficult. I've already read the Chris and Carlos's posts and Chris helped me a lot. My current exact CPU is an Intel E8335, and I want to buy this one Ebay which is a 8435, the one in the iMac 24'. I'm pretty sure it's the right one but i'd like a last agreement :).

My concern is about heating. As Chris misses the screw of the heatsink, he couldn't tell me I he has overheating problem from the upgrade.

So, do you thinks I will have heating problem after the upgrade ?

Thanks

⟐ Edited December 13, 2013 at 9:36 MST

I´m the owner of a 20¨ iMac, early 2008. I do not plan to replace this machine yet, so I looking for (cost effective) ways to speed it up.

Current specs are:

2,4 GHz CPU

6GB RAM

120GB SSD ( OS and Applications only )

I know the CPU can be upgraded to a 2,66 GHz model. A small speedbump, but also very cheap: $10 on eBay.

My question:

Is it possible to use the 2,8 Ghz CPU from the 24¨ model.

According to Wikipedia, the TDP is the same:

44W - Core 2 Duo E8235 - SLAQB (C0) - 2.8 GHz

https://en.wikipedia.org/wiki/List_of_In...

Benjamin

⟐ Commented March 24, 2022 at 13:18 MST