Author Topic: pci powermac "jumper block" overclock on B&W G3 + YIKES G4  (Read 5595 times)

supernova777

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pci powermac "jumper block" overclock on B&W G3 + YIKES G4
« on: September 24, 2014, 06:11:16 AM »
all the pci powermacs have a jumper block that controls the multiplier of the cpu
easily accessible just by removing a warning sticker
for those of us who have one of these machines but cant find the powerlogix 1ghz ZIF that user "Dane D" has  :'(



but, is there any danger to trying this? can it damage the cpu?
i guess id be silly not to try it.. if there is no danger involved..
to go from 450mhz up to 500mhz... easily attainable? stable?



http://lowendmac.com/2002/overclocking-the-blue-and-white-g3/
http://www.xlr8yourmac.com/G4ZONE/G4YIKESOC/



seems to be only one jumper to move to go from 450mhz to 500mhz!!!


« Last Edit: September 24, 2014, 06:47:06 AM by chrisNova777 »

supernova777

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Re: pci powermac "jumper block" overclock on B&W G3 + YIKES G4
« Reply #1 on: September 24, 2014, 12:12:54 PM »
zif cpu upgrades
http://www.xlr8yourmac.com/g3CARDS/G3_1.1GHz_vs_G4_1GHz_review/index.html

i guess all of these would work in my b&W? but i cant find any of them for sale  :'(

supernova777

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Re: pci powermac "jumper block" overclock on B&W G3 + YIKES G4
« Reply #2 on: September 24, 2014, 12:18:34 PM »
i just checked my jumper block
it has 11 jumpers
not 4
????

this must be only for the first revision b&W's

ok wait.. i see now


they discuss only changing these 4 jumpers of the 11

supernova777

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Re: pci powermac "jumper block" overclock on B&W G3 + YIKES G4
« Reply #3 on: September 24, 2014, 12:32:10 PM »
SUCCESS!
my g3 450mhz is now reading 500mhz!!!! ;)
i wonder if it will be stable...

Offline MacTron

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Re: pci powermac "jumper block" overclock on B&W G3 + YIKES G4
« Reply #4 on: September 24, 2014, 12:48:33 PM »
Congratulations!



If you are bitten by the overclocking bug, you'll be infected forever... LOL

Please don't PM about things that are not private.

supernova777

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Re: pci powermac "jumper block" overclock on B&W G3 + YIKES G4
« Reply #5 on: September 24, 2014, 02:14:20 PM »
LOL!

it appears to be working just the same... no loss of stability :D
easiest overclock in the history of all mac + pcs!

I really do think that classilla is running significantly faster...
before when i tried to load macintoshgarden it was brutally slow
now its not bad
maybe im imagining.. can 50MHz make a huge difference?
« Last Edit: September 24, 2014, 02:53:52 PM by chrisNova777 »

supernova777

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Re: pci powermac "jumper block" overclock on B&W G3 + YIKES G4
« Reply #6 on: September 24, 2014, 03:00:01 PM »
heres my result  8)
i stopped the test after floating point

almost close to synthos result of his g3-500
http://macos9lives.com/smforum/index.php?topic=623.msg7970#msg7970

Offline filipetolhuizen

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Re: pci powermac "jumper block" overclock on B&W G3 + YIKES G4
« Reply #7 on: September 24, 2014, 08:38:20 PM »
I could reach 500mhz with a 450mhz G3. I had to use additional cooling for gaming (Shadow Warrior would lock-up in E1L4), but it was rock stable proper cooled.

supernova777

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Re: pci powermac "jumper block" overclock on B&W G3 + YIKES G4
« Reply #8 on: September 24, 2014, 09:23:40 PM »
I could reach 500mhz with a 450mhz G3. I had to use additional cooling for gaming (Shadow Warrior would lock-up in E1L4), but it was rock stable proper cooled.

i think its fine with the case closed and the 120 fan blowin. but i was thinking i might add a fan directly to the cpu
it is totally running hotter then before. but i think its ok.. its not freezing from the cpu.. it seems pretty stable .. it hasnt given me any problems when im not trying to install 8.6 / 8.5.1 :D

supernova777

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Re: pci powermac "jumper block" overclock on B&W G3 + YIKES G4
« Reply #9 on: September 26, 2014, 01:33:38 PM »
http://www.powerlogix.com/products/g3_zif/


Quote
Feature List:

    PowerPC 750GX @ 1.0 or 1.1 GHz
    L2 Cache, 750GX: 1MB of on-chip L2 cache running at 1.0 or 1.1 GHz
    User adjustable speed using CPU Director

Compatible with the following:

All Power Mac G3 minitowers and desktops, G3 "All-in-One", Blue and White G3's and the PowerMac G4 "PCI Graphics" (aka "Yikes" motherboard G4.)

i bet this cpu smokes;)

more data (March 27, 2006)
https://www-01.ibm.com/chips/techlib/techlib.nsf/products/PowerPC_750GX_Microprocessor
https://www-01.ibm.com/chips/techlib/techlib.nsf/techdocs/2EF555D341769CE787256E470077DD3D

heres a geekbench2 result of 1.1ghz powerpc g3
http://browser.primatelabs.com/geekbench2/627052
showing it to be almost identical in performance to the Quicksilver Single cpu 933mhz

that means u could run leopard with this lil chip on a b&W i bet! not that id want to :)
but definately alot more lifting power for vst plugins + ableton live under mac os 9!!!

supernova777

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Re: pci powermac "jumper block" overclock on B&W G3 + YIKES G4
« Reply #10 on: September 28, 2014, 07:00:18 AM »
here are some pics to help you identify if your g4 is a yikes model

Offline filipetolhuizen

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Re: pci powermac "jumper block" overclock on B&W G3 + YIKES G4
« Reply #11 on: October 05, 2014, 09:51:51 PM »
If only I could reach stable 500mhz with the original G4 ZIF... :(

supernova777

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Re: pci powermac "jumper block" overclock on B&W G3 + YIKES G4
« Reply #12 on: October 06, 2014, 12:31:37 AM »
get a g3 450mhz cpu and clock that to 500mhz
it works

Offline filipetolhuizen

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Re: pci powermac "jumper block" overclock on B&W G3 + YIKES G4
« Reply #13 on: October 06, 2014, 05:46:38 AM »
I have already done that. I wish I could do that with the G4 because of its benefits over the G3 (Altivec and faster FPU).

Offline MacTron

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Re: pci powermac "jumper block" overclock on B&W G3 + YIKES G4
« Reply #14 on: October 06, 2014, 07:24:31 AM »
I have already done that. I wish I could do that with the G4 because of its benefits over the G3 (Altivec and faster FPU).

Yes it can be done in a G4 also. But a few tiny resistors must be changed instead a few motherboard jumpers...
Please don't PM about things that are not private.

Offline filipetolhuizen

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Re: pci powermac "jumper block" overclock on B&W G3 + YIKES G4
« Reply #15 on: October 06, 2014, 12:03:12 PM »
I have already done that. I wish I could do that with the G4 because of its benefits over the G3 (Altivec and faster FPU).

Yes it can be done in a G4 also. But a few tiny resistors must be changed instead a few motherboard jumpers...
I also did that, but it wasn't stable. I tried with 2.7V, 2.6V, 2.5V and 2.4V but none were stable.
Edit: Are you talking about the Sawtooth and newer or the Yikes?

Offline MacTron

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Re: pci powermac "jumper block" overclock on B&W G3 + YIKES G4
« Reply #16 on: October 06, 2014, 12:20:16 PM »
Edit: Are you talking about the Sawtooth and newer or the Yikes?

I'm talking about Sawtooth and newer.
I'm sorry, I always forget about Yikes ...
Please don't PM about things that are not private.

supernova777

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Re: pci powermac "jumper block" overclock on B&W G3 + YIKES G4
« Reply #17 on: October 06, 2014, 02:08:17 PM »
lol it says YIKES G4 in capitols on every post subject...
:D