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358

macrumors member
Nov 30, 2020
82
11
Jerusalem, Israel
hi guys,

my firmware is 87:0:0:0:0 after OCLP Monterey instal (i never checked what it was before), is the official update even applicable?
 

Marche90

macrumors member
Apr 5, 2022
78
44
Kind of a necro-bump, but still decided to share my success story. Bought a Xeon E3-1270 for my 2011 21.5" iMac. Decided for that one since the Wattage requirement isn't as high as a 2600 and was way cheaper than a 2600s. Bought it three weeks ago, came today and installed it in less than an hour (All those times disassembling this computer has definitely paid off...) So far it runs extremely well and haven't noticed any weirdness at all.
 

Painkiller

macrumors member
Aug 2, 2009
51
23
Kind of a necro-bump, but still decided to share my success story. Bought a Xeon E3-1270 for my 2011 21.5" iMac. Decided for that one since the Wattage requirement isn't as high as a 2600 and was way cheaper than a 2600s. Bought it three weeks ago, came today and installed it in less than an hour (All those times disassembling this computer has definitely paid off...) So far it runs extremely well and haven't noticed any weirdness at all.
Does sleep work!
 
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m0bil

macrumors 6502
Sep 29, 2020
453
526
I've been testing the last couple of weeks an i7-2600 (non-S part) 95W TDP on my 2011 21.5" iMac 12,1 with
SSD drive, 16GB memory and WX4130 gpu.

So far all is good, I've stressed cpu a lot: vmware virtual machines, multi thread compiling, bechmarking... all works without issues.

Power consumption as measured on wall plug is around 155W, I think power supply is rated at 205W. Temperature does not seem a problem either.
 

Nguyen Duc Hieu

macrumors 68040
Jul 5, 2020
3,021
1,006
Ho Chi Minh City, Vietnam
Kind of a necro-bump, but still decided to share my success story. Bought a Xeon E3-1270 for my 2011 21.5" iMac. Decided for that one since the Wattage requirement isn't as high as a 2600 and was way cheaper than a 2600s. Bought it three weeks ago, came today and installed it in less than an hour (All those times disassembling this computer has definitely paid off...) So far it runs extremely well and haven't noticed any weirdness at all.

How is the performance?
According to this Youtube video, Cinebench performance dropped significantly moving from core i5-2400s to Xeon E3-1270.
(benchmark from 6:45)

 

jay508

macrumors regular
Jul 11, 2020
243
153
I've been testing the last couple of weeks an i7-2600 (non-S part) 95W TDP on my 2011 21.5" iMac 12,1 with
SSD drive, 16GB memory and WX4130 gpu.

So far all is good, I've stressed cpu a lot: vmware virtual machines, multi thread compiling, bechmarking... all works without issues.

Power consumption as measured on wall plug is around 155W, I think power supply is rated at 205W. Temperature does not seem a problem either.
I also tested i7-2600 3.4ghz 95w on 2011 21.5" iMac 12,1 for a while and added efi boot screen firmware.

Graphics card is m5100 windows macOS everything works fine
 

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Marche90

macrumors member
Apr 5, 2022
78
44
How is the performance?
According to this Youtube video, Cinebench performance dropped significantly moving from core i5-2400s to Xeon E3-1270.
(benchmark from 6:45)

So far performance has been rock solid, and my Cinebench scores reflect that, they are slightly above 3000. How odd, maybe there was an issue with the installation.
 

inck243

macrumors member
Jun 15, 2010
70
7
Philadelphia, PA
Are there any processors that might work if I use windows only? I don’t plan on using OSX.

I was thinking of trying out the i7-3770. Or, is there a higher processor that will work in the socket and might work on widows? I’d put it in my 27” mid 2011.
 

kirya

macrumors newbie
Jul 5, 2022
10
1
Are there any processors that might work if I use windows only? I don’t plan on using OSX.

I was thinking of trying out the i7-3770. Or, is there a higher processor that will work in the socket and might work on widows? I’d put it in my 27” mid 2011.
all you need to instal bios in logic board chip
 

m0bil

macrumors 6502
Sep 29, 2020
453
526
Are there any processors that might work if I use windows only? I don’t plan on using OSX.

I was thinking of trying out the i7-3770. Or, is there a higher processor that will work in the socket and might work on widows? I’d put it in my 27” mid 2011.

Currently no Ivy Bridge cpu will work on 2011 iMacs, no matter the OS (it's a firmware problem).
 

Trucach

macrumors newbie
Dec 4, 2022
5
0
Just upgraded imac 11.2 to i7 860s
Can it be delided? Is it soldered? Don’t like the temperatures. Above 90C.
 

rjpoisonoak

macrumors newbie
Jan 14, 2023
18
4
Wanted to share a success story with everyone here just for future reference. I have a 27 inch 2011 iMac that I just installed a xeon 1290 3.6 ghz processor into. I only use windows 10 on the machine so can't speak for Mac os but it was plug and play with windows 10. Just needed a pram reset on the first boot and it was a ok. My whole set up just in case anyone was curious is the xeon 1290, GTX 1070 GPU, 32 gb of ram, 1tb SSD, and removed optical drive. This thing is a beast now playing games and just overall daily use and such. Very snappy with high performance to boot!
 

inck243

macrumors member
Jun 15, 2010
70
7
Philadelphia, PA
Wanted to share a success story with everyone here just for future reference. I have a 27 inch 2011 iMac that I just installed a xeon 1290 3.6 ghz processor into. I only use windows 10 on the machine so can't speak for Mac os but it was plug and play with windows 10. Just needed a pram reset on the first boot and it was a ok. My whole set up just in case anyone was curious is the xeon 1290, GTX 1070 GPU, 32 gb of ram, 1tb SSD, and removed optical drive. This thing is a beast now playing games and just overall daily use and such. Very snappy with high performance to boot!
Thanks for the info!! Do you think this xeon is better than the i7-2600K?

I'm only going to use windows 10 as well in my 27 inch. Might go with the xeon if it's better! I'm looking into some comparison sites now. Also do you know if it's V1/V2/V3 or whatever? I'm not familiar with the Versions labeling on the xeon processors. Or how to determine what version I'm buying on ebay. **edit** i may not be willing to pay the prices on those xenon processors lol I'm trying to get the i7-2600k for 20 or less :p
 
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rjpoisonoak

macrumors newbie
Jan 14, 2023
18
4
Thanks for the info!! Do you think this xeon is better than the i7-2600K?

I'm only going to use windows 10 as well in my 27 inch. Might go with the xeon if it's better! I'm looking into some comparison sites now.
My computer came stock with a i7 2600 non k variant. The Mac bios doesn't allow overclocking so opting for a k labeled CPU is kind of worthless. As far as benchmarks go I ran Geekbench 5 with the stock i7 2600 and the xeon 1290 and the results have a substantial difference favoring the xeon. Especially in multicore because that's what xeons were designed for. In single core having the extra .2 ghz is noticable in terms of booting, running applications and such like. The 1290 also has the same tdp as the stock i7 2600 so overall better performance with zero power draw or heat issues. The xeon also runs about 5-10 degrees c cooler than the stock i7 did depending on the task. Obviously sleep and wake is broken because the xeons don't have an igpu but I never use sleep I just shut the machine down or leave it running so no issue for me there.
 
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Nguyen Duc Hieu

macrumors 68040
Jul 5, 2020
3,021
1,006
Ho Chi Minh City, Vietnam
Thanks for the info!! Do you think this xeon is better than the i7-2600K?

I'm only going to use windows 10 as well in my 27 inch. Might go with the xeon if it's better! I'm looking into some comparison sites now. Also do you know if it's V1/V2/V3 or whatever? I'm not familiar with the Versions labeling on the xeon processors. Or how to determine what version I'm buying on ebay. **edit** i may not be willing to pay the prices on those xenon processors lol I'm trying to get the i7-2600k for 20 or less :p

With no mark, the Xeon E3-12xx is a V1 (LGA 1155 socket)
A Xeon E3-12xx V2 (LGA1155 socket) can be installed in iMac 2011 physically, but the iMac will not boot.
Similarly, Xeon E3-12xx V3 (LGA 1150 socket) is compatible with iMac 2013.
 

Rendell001

macrumors newbie
Aug 27, 2019
25
11
Scotland
With no mark, the Xeon E3-12xx is a V1 (LGA 1155 socket)
A Xeon E3-12xx V2 (LGA1155 socket) can be installed in iMac 2011 physically, but the iMac will not boot.
Similarly, Xeon E3-12xx V3 (LGA 1150 socket) is compatible with iMac 2013.
It was a damn shame we couldn't find a solution to that issue - when you have to dabble in microcode, you're in unknown territory!
 

kirya

macrumors newbie
Jul 5, 2022
10
1
we can use intel xeon e3 1270 v2 but we must to configure intel efi manualy with efiTool )))
im now interesting how to do this because my stock amd gpu and i5 2400s in imac 12.1 do not work at all from the apple web boot of high sierra 10.13.6 )))))))))))))) iam from Russia and i also read sources https://habr.com/ru/post/211574/
i have try OC Opencore with BigSur but i donot like this hard way want to fix efi boot like it must be
 
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inck243

macrumors member
Jun 15, 2010
70
7
Philadelphia, PA
This is another model with i7 2700k wx4170 installed

Installed two SSDs, the first sata 2.5 inch SSD installed 10.13.6 and windows 10 system, the second SSD M.2 NGFF Samsung PM871A 1TB installed 11.6.5 12.3.1 system using all normal including sleep

https://forums.macrumors.com/media/img_3182-jpg.832558/

Does anyone know why in a i7-2600K it says 3.5ghz in the system instead of 3.4 when it’s a i7-2600?

Is the K just a little bit faster even though you can’t overclock it?
 

Amethyst1

macrumors G3
Oct 28, 2015
9,832
12,246
Base clocks for the various i7s are:

2600: 3.4 GHz
2600K: 3.4 GHz
2700K: 3.5 GHz
 
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