Power Mac Gi5 'Hackintosh'

Thanks for the comments guys :-) I fixed the fans and changed the direction of flow within the waterblock.

I'm currently getting high temps at 4.6ghz though... Much higher than anticipated!

Can anyone offer any assistance?
 
So far with my clock at 4.6GHz (Voltage 1.30v) with RAM at 2666MHz (1.65V)

CPU Ambient: 73'C
CPU Die 1: 81'C
CPU Die 2: 90'C
CPU Die 3: 90'C
CPU Die 4: 81'C
CPU Heatsink (Assuming that is a reading from the pump?):35'C
Mainboard Proximity: 34'C
GPU Die: 26'C

These temps are using Prime95 and not normal operating temps

I have toyed with the voltage and it doesn't make a difference at all, it just crashes the computer. I've tried stock frequencies under load and they are hitting close to 80 still.

I've had the waterblock off twice, I use a very fine layer of Arctic MX-4.

What can I do? Is this a CPU issue?
 
Thats pretty toasty for the CPU, I would bet your waterblock is not getting a good contact with the CPU. Use the thermal grease spairingly, did you clean off the old gunk with acetone (local pharamcy can usually supply) or similar?

Unclocked typically I would expect the cpu to idle at about 30-40'C

Nothing wrong with your processor.
 
I'd have chosen a higher quality PSU (one that doesn't mind running fanless, like the AX or HX+ series) In that configuration, you no longer have a 750w PSU.... but as long as you don't crossfire/SLI it should be fine.
 
well ive now resat the waterblock for a 3rd time without any drop in temperatures.

I use a pea sized amount of MX-4 spread using a stanley blade for fine even distribution. i couldn't apply more than usual this time as i ran out having applied it 3 times :-(

The computer now hangs and still under stock speeds runs at 77'c, so now i have requested a new CPU which will be here tomorrow.

I have also ordered some Coollaboratory Liquid Metal Ultra after reading fantastic reviews about it.

As for the PSU, its original PSU was a 750W and the same fans kept it cool. I ran it for 2 days straight without those fans and it was barely warm to the touch which i am most impressed with. With these fans it runs very very cool and again they are only on for a few seconds then they go off again.

Using my Kill-A-Watt meter, when running Prime95 and FurMark, it at max 280W.

I dont think i will ever crossfire/sli, i would have to add more cables and the case just isnt big enough. Plus i dont know how well they work under OSX so i never built in the capacity to use it.

But yes, those fans work very very well. They were cooling an old crappy PSU and now they are cooling a better component version of the same wattage PSU.
 
Arkious said:
well ive now resat the waterblock for a 3rd time without any drop in temperatures.

I use a pea sized amount of MX-4 spread using a stanley blade for fine even distribution. i couldn't apply more than usual this time as i ran out having applied it 3 times :-(
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Don't spread it, you can trap air bubbles that way. Let the block do the spreading.

How did you cut the side panel btw? Jigsaw or dremmel? I want a window in my G5 but haven't found anywhere local that can laser cut 3mm aluminium. :(
 
stevey3d said:
Brilliant job!I run a multiboot hackintosh in a skeleton, but this just looks the nuts! Well done mate, you should be proud ;)
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Thankyou very much :-D

Shawy said:
Don't spread it, you can trap air bubbles that way. Let the block do the spreading.

ohh i didnt know about that, i always thought you had to spread it :O

How did you cut the side panel btw? Jigsaw or dremmel? I want a window in my G5 but haven't found anywhere local that can laser cut 3mm aluminium. :(
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Jigsaw mate, it wasnt the easiest thing to do! Me and my partner had the numbest of hands after xD but then there was a lot of filing and a little sanding to smooth it off :-)

Bromhead said:
Looks great job well done. Don't think I'd be able to do this myself ^_^
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I was a bit scared i must be honest, the thought of wrecking it but then thats part of the enjoyment ^.^ best of luck if you do it! its not hard to convert, its just hard to make it look tidy
 
just a quick update, this morning i de-lidded my 3570k after itching to do it... the results are staggering!

here were my initial temps at 4.6GHz

IMG_3645_zps36aea176.jpg


and here is my de-lidding process...

IMG_3864_zps60f73b84.jpg


IMG_3865_zps043e0b42.jpg


IMG_3866_zpsbf9619af.jpg


IMG_3867_zpsefac3d8a.jpg


IMG_3868_zps0dfac878.jpg


IMG_3869_zpsa3dc4549.jpg


Same test, same voltage, same cooling... massive drop in load temps!

i used Coollaboratory Liquid Ultra TIM
 
That is a big drop!

Looks like you have the rad fans drawing the heat off the rad into the case?

have you thought about adding another fan... for exhaust?
 
PeteA said:
That is a big drop!

Looks like you have the rad fans drawing the heat off the rad into the case?

have you thought about adding another fan... for exhaust?
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I have 2 80mm fan exhausts in the case, unfortunately that is all i can fit.

Spooner God said:
Ace build log, Where has this been hiding? :P

Those temps are looking a lot better now you have de-lidded the chip.
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thanks! ^.^ i love it and appreciate it more for the work ive put into it lol

JCX50 said:
I really didn't think that your temps would drop that much! I would be too scared to de-lid my CPU.
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yeah much much better, i pushed it to 5ghz this morning but it takes a jump from 1.32v to 1.53v to run it and the performance is hardly worth the extra power usage lol

Blame said:
Very pretty build mate! and nice temps!
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thanks! :-)
 
Btw, does anyone get issues with XMP?

I have the Avexir Core Blue 2666 and I can't get the thing to boot using anything above 2200 with higher volts. Then there's the XMP that sets everything for you and that won't boot either. Is there anything I can look at? It can be a fresh bios reset and it still won't boot.

Is it a RAM issue or?
 
coolamasta said:
Looking awesome bud, really really keep thinking about de-lidding my 3770k :-/
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Its quite easy, you just have to make sure you take your time and apply gentle even pressure. Also i recommend getting one of those stanley blades that you can snap off as you go as they seem to be the thinnest at 0.41mm so it doesnt bow the cpu as much when peeling the corners. Also you must try not scrach the cpu surface or go too deep that you hit the die. But as i say i was an amature at it and it wasnt hard at all really.

Dam worth it! :p
 
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