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The 1.33 Ghz emac is here
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Yes, I know I could buy a PC, but why?
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Overclocking my iMac DV is similar, but I'd never have the guts to try. I run my Pentium 3 450 MHz at 600 Mhz no problem (by changing the bus speed from 100MHz to 133 MHz), because I don't care about that machine. I'm either too scared or too wise to keep the soldering iron away from my iMac.
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Last edited by bradoesch; Jan 18, 2004 at 12:32 AM.
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1ghz is fine for me...but if i ever want to get kicked in the nuts i'll try it.
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Hmmm. An 800MHz eMac running at 1.33GHz with no mods (except jumpering).
Sounds fishy.
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Moderator Emeritus
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Originally posted by Eriamjh:
Hmmm. An 800MHz eMac running at 1.33GHz with no mods (except jumpering).
Sounds fishy.
A little fishy, but not beyond the realm of possability. Consider the fact that the eMac is based around the 7455 G4 chip, which ranges in clock speed from around 800MHz all the way up into the 1.4GHz range. So, it is entirely possible I would imagine, to overclock a 7455 to speeds that high. Because chances are that the 7455s were actually underclocked by Apple as a means of product protection, to keep the iMac and eMac from competing with the Power Mac line by way of clock speed.
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I think it looks good - I've emailed the user to ask further questions - like 'if you live nearby can I come and see it?'
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Any updates?
I think it would be awesome, I would love to OC my 1 GHz to something like 1.3 or 1.5.
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Overclocking an eMac. Ah, I suppose it'd be fine. I bet that increasing the core voltage slightly would allow that 1.4 GHz jump. I'd put a big, quiet fan immediately below the grille on the back and call it a day.
That display trick is a little iffy.
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Actual conversation between UCLA and Stanford during a login on early Internet - U: I'm going to type an L! Did you get an L? S: I got one-one-four. L! U:Did you get the O? S: One-one-seven. U: <types G> S: The computer just crashed.
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Hello guys, I am the owner of the updated eMac.
Mike from www.xlr8yourmac.com does not believe it either.
I am on a broadband so if you want to telnet or SSH or even get remote desktop on it for testing you are welcome. Just let me know.
1.33->1.4 is not worth messing around with voltages. It is so sweet to do nothing but move a jumper and have 60% speed increase! I believe they use underclocked CPUs because Motorola does not make 800MHz chips anymore.
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Originally posted by cdhostage:
That display trick is a little iffy.
Not at all.. It's a relatively straight forward software hack that I have done on my eMac too. The graphics chips are perfectly capable of running 2 screens. But Apple blocks this function on all ATI eMacs, iMacs and iBooks, so as to at least partly justify the cost of their more expensive machines. Did it to my eMac on the very day I got it. Zero problems to date. The hack simply lifts Apples block.. Thats all.
The over clocking mod looks interesting too. Perhaps one day i'll give that a shot also.. Nice work
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The worst thing about having a failing memory is..... no, it's gone.
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OK, I could not stand it anymore..
I took my 800Mhz eMac which I had bought as a $529 Apple refurb. I already put more RAM, a DVD-106 superdrive, and a 120 GB 7200 RPM drive in it.
I decided to do as little as possible, so I soldered the jumper in between the bottom two to yield 1.066 Ghz.
The system has been up and running for hours now without a hitch. The speed is reported as 1.07 Ghz. My initial xbench score is a little over 110. I have 640 MB of ram.
So far so good. It was not too easy doing that solder job, I think I will leave it alone for a while now.. If I ever decide to do more, I'm taking it to work where we have a lab to work on things like this..
ac
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Originally posted by acX:
OK, I could not stand it anymore..
Hehe, I'm feeling that way too now. And now i am seriously thinking about dusting off my soldering iron.. Looks like it would be relatively straight forward to take my 1ghz eMac up to 1.2ghz, as all I have to do is remove 3 SMD jumpers. Thats it. No need to replace any to new locations at all.
Who would it have thought it eh.. Remove 3 tiny components for a 20% speed boost
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The worst thing about having a failing memory is..... no, it's gone.
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Just removing 2 jumpers will take your 1GHz to 1.266GHz.
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Originally posted by chabig:
Just removing 2 jumpers will take your 1GHz to 1.266GHz.
Ah, but which ones?
I'm also intrigued of this idea with the new 800 MHz ibooks, I wonder how hard it would be to overclock them?
I could get a base ibook with cd-rom drive from the education store for $949, and rip it apart, upgrade the drive to a superdrive, over clock it and add a larger hard drive.
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Originally posted by the_glassman:
Ah, but which ones?
The ones that are displayed on that site who's URL was shown in the 1st post here
For someone with decent soldering skills, it should not be too hard to do at all.. When time allows, i'll give it a go for sure.
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The worst thing about having a failing memory is..... no, it's gone.
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my 1ghz is running at 1.4 thanks to that article. it passed the stress test. is the fan temp controlled? i overclocked it without ever turning it on and it makes a ton of noise, but maybe it's the excess heat...
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Originally posted by CobaltGT:
..is the fan temp controlled? i overclocked it without ever turning it on and it makes a ton of noise, but maybe it's the excess heat...
CobaltGT, it seems that the fan does not change the speed at all. Compare its speed right after turning eMac on and after few hours under 100% load - it is the same (=loud).
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Could someone further explain to me the soldering part...
I have never soldered before, and while it does not seem terribly complex, in his diagram (from how I read it) he shows soldering 2 jumpers together that are not next to each other to get from 800mhz to 1.3 ghz.
I would really appreciate any help, as I am seriously considering doing it...I mean I only paid $500 for it...
Thanks guys!!
R.
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Where can I buy an 800Mhz eMac?!? I am dying to try this out and it is only for ~$600!
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One iMac, iBook, one iPod, way too many PCs.
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I overclocked a 1Ghz eMac to 1.33Ghz. no trouble yet. will go higher in the future. my soldering iron broke, so i took off the jumpers with an exacto knive and made a bridge with pencil markings. it works fine.
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Guys, if you have never soldered before it is probably better to try it on something else first. Or better get someone to help you! They don't need to be computer experts. Average soldering skills and steady hands are ok.
The website has updated photos.
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Guys, I think I get it, but I do have a question:
In the image (attached) the gold colored pads are, I assume, the jumpers?
So to get to 1.3 ghz, I just solder the two pairs mentioned...
So my question is, do I need to remove the gold pad 'jumpers' or just put solder on top of them and join them?
Thanks!!!
R.
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Yes, I have a friend with soldering experience, but I think I'll need clearer instructions exactly what we're going to be soldering.
Sorry, but this is my first over-clocking.
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I have a 700Mhz eMac, can I overclock this one as well?
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Moderator Emeritus
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This is truly amazing, especially for those of you who paid $5xx for an eMac refurb. I mean... 1.33GHz+ of G4 power for less than $600!
Whats amazing is that a 1.467GHz processor upgrade for the Power Macs costs that much. Hell, even a good 1.25 upgrade costs a little over $400.
Incredible.
Bastards. Making me want to sell my Power Mac and buy an eMac...
...
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I like chicken
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Meow Mix, Meow Mix
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Okay, this is a crucial piece of information for anyone deciding to do this, especially those with no experience.
Working around exposed CRT's dangerous. If you don't know how to properly work around exposed CRT's, make sure you learn before you try this. You can get electrocuted. CRT's still carry a charge even when they are unplugged.
http://homepage.mac.com/jonzgoda/displaydischarge.pdf
Try the above link if you are worried about shocking yourself accidentally.
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Moderator Emeritus
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Ah. Excellent point.
I remember when I was about 8 years old, I had taken apart an old black and white TV. I was sitting on the floor screwing around with the tube. I then touched the cap at the back of the tube... Then I remember being thrown to the floor...
An interesting experience to say the least. I couldn't stop shaking for almost 10 minutes.
I sometimes imagine the only reason that I survived was the fact that before my 'Curious George' self got a hold of the TV, it had been sitting in a storage shed for well over 10 years because it was dead. I imagine much of the electricity had disipated.
Ah, the joys of childhood...
(
Last edited by Lateralus; Jan 17, 2004 at 05:39 PM.
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I like chicken
I like liver
Meow Mix, Meow Mix
Please de-liv-er
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I have an original G4 flat panel imac 800mhz. can I do the same thing to it? I'd like a HD bigger than 80 as well.
and it sure would be nice if apple's superdrive could burn 4x dvds faster than 1x.
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Grizzled Veteran
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Originally posted by gthyb:
I have an original G4 flat panel imac 800mhz. can I do the same thing to it? I'd like a HD bigger than 80 as well.
and it sure would be nice if apple's superdrive could burn 4x dvds faster than 1x.
Im getting a ibook and i believe its at 800 mhz would I be able to over clock that as well. Is the mother board similar to the emac sort of. Does any one have a link if not other wise?
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Grizzled Veteran
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I agree with ibodnar.. For those that have no soldering experience, I would not attempt this mod yet. Regular soldering can be tricky enough at times. But modern electronic stuff like the eMac uses surface mount technology which is another ball game entirely. And is rather more tricky to solder yourself. In fact ideally, it really needs specialist surface mount soldering equipment too. But at a push, just the SMD jumpers can be done with regular soldering equipment.
Oh, and dont forget your anti static precautions too!
Still not done this to my eMac yet.. but perhaps this weekend..
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The worst thing about having a failing memory is..... no, it's gone.
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Originally posted by Grrr:
.. But at a push, just the SMD jumpers can be done with regular soldering equipment.
Grrr, I just read the message somewhere this morning that some guy was so impatient that he removed existing jumpers with a pen knife and used graphite pencil to create shorts. That is the man!
I can't find the reference! Those messages are now everyhwere
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Grizzled Veteran
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Originally posted by DeKU:
I overclocked a 1Ghz eMac to 1.33Ghz. no trouble yet. will go higher in the future. my soldering iron broke, so i took off the jumpers with an exacto knive and made a bridge with pencil markings. it works fine.
This post you mean ibodnar?
Don't try this at home kids..
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The worst thing about having a failing memory is..... no, it's gone.
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Grrr, I am rolling on the floor!
I looked at about 10 message boards but not that one. Blind!
DeKU, how is your eMac doing?
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jefferymac asked:
"I have a 700Mhz eMac, can I overclock this one as well?"
Can someone let us know if it is possible to overclock the 700MHz eMac. I too have a 700MHz....would be nice to get it to 1GHz if possible, save me $1000 from buying a new one. If I recall the 700MHz eMac was using the 7450 chip and not the 7455, is this correct?
Thanks,
Ed
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I have 13 Macs: 15Gig iPod, eMac/700, iBook/800, iMac/350, iBook/300, 7100/66, 6100/60, Performa 476, LC, SE/30, 3-Pluses, & a 512K w/030 accelerator board.
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eMac is fine, it's actually my little brothers x-mas gift from yours truly. i removed 3 jumpers (R1506, R1512, R1518) by slowly scraping the solder off one side and the twisting the blade once in to fully remove it. they just pop off. i needed to bridge R1515 so i used a 0.3 lead pencil to bridge it.
Little brother has been playing plenty of halo and aliens vs. predator on hours end and the machine has not crashed. i'll try to bump it to 1.4 GHz as soon as i can.
for those who dont want to do a pencil bridge, another goofy way to do the bridge is by taping a tiny square of aluminum foil on the conductors. works fine as well. (dont know what prolonged effects if any, heat will have on the tape.)
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If you go that road the best bet is electrically conductive silver paint. It is about $5..10 a pot in hobby/electronics shops. They sell it for PCB repairs. Or shorting the pads
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Originally posted by Mac10:
jefferymac asked:
"I have a 700Mhz eMac, can I overclock this one as well?"
Can someone let us know if it is possible to overclock the 700MHz eMac. I too have a 700MHz....would be nice to get it to 1GHz if possible, save me $1000 from buying a new one. If I recall the 700MHz eMac was using the 7450 chip and not the 7455, is this correct?
Thanks,
Ed
No, unfortunately your eMac would not be overclockable, atleast not significantly enough to justify the risk of damage to the hardware that comes with soldering. The 7450 topped out at around 800MHz.
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I like chicken
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Those of you who have actually spent some time around the Mac may remember an article by MacAddict where they modified jumpers to overclock a Mac.
For those interested, a little research can find it, I'm sure.
Same thing for the dual monitor/spanning hack. This has been available for some of the newer iBooks for awhile.
I'd just like to know how people like lbodnar find this stuff out!
If one doesn't want to take the chance, that's understandable. But try to have a *little* objectivity.
And if you *do* try this, I'd recommend avoiding "pencil bridges" or tin foil pathways. If you can't do any soldering, maybe you should pass.
But very cool of lbodnar to share all this information, detail, and great pictures.
This is too too cool!
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Mac Elite
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Originally posted by klinux:
Where can I buy an 800Mhz eMac?!? I am dying to try this out and it is only for ~$600!
Yeah does anyone know exactly where one can buy one besides ebay?
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the apple store has some cheap ones in the deals section. they also have some that are even less refurbished.
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Originally posted by gthyb:
I have an original G4 flat panel imac 800mhz. can I do the same thing to it? I'd like a HD bigger than 80 as well.
and it sure would be nice if apple's superdrive could burn 4x dvds faster than 1x.
I have the same original iMac 800Mhz with 2x SuperDrive. Your problem that disks are being burned at 1x is teh media. I had a couple of Memorex dvd's and they all burned at 1x, then I got the Apple dvd's and they burned at 2x. So it's probably teh media.
But the original iMac with SuperDrive will not burn faster then 2x though
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Junior Member
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Wow! I'm thinking of getting a 1ghz eMac, would I be able to overclock that to 1.33ghz, or would I have to get a 800mhz?
Cheeers,
Nick
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Originally posted by nickday:
Wow! I'm thinking of getting a 1ghz eMac, would I be able to overclock that to 1.33ghz, or would I have to get a 800mhz?
800 and 1GHz are exactly the same apart from a CPU. I don't know where the 1GHz's limit is but people run it at 1.4GHz:
http://bbs.xlr8yourmac.com/ubb/Forum11/HTML/001019.html
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Fresh-Faced Recruit
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OK, just an update.
I can reliably run my 800Mhz eMac at 1.4GHz but with a little bit of extra work.
I have replaced the thermo-conductive pad between the processor and a heatsink for a grease. Also I have opened the bottom hatch and placed an extra fan to blow the air inside. I am not impressed with an airflow inside eMac - probably making something like a funnel or airflow quides to route the air properly will do the job. By Apple design this tiny heatsink just sits in a rather big cave and air is being sucked out of it. There should be a dedicated airflow through it!
I have also tried 1.46GHz - there is a startup chime but no video. That's it. The limit.
But 800MHz -> 1.4GHz has been achieved!
That is 75% increase - is is sorta new World Record?
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Crikey!
Well done!
*Off to buy thermo conductive paste*
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The worst thing about having a failing memory is..... no, it's gone.
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oh, yeah i know its the media. its just that 2x media is getting harder and harder to find, and i believe the problem was fixed through a firmware update for windows users, i just wish apple/pioneer would do the same.
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I'm more interested in the second part of the article. 800 MHz seems plenty fast enough (I'm currently on G3/266), but what's holding me back from the eMac is that godawful shadow-mask screen. I'm almost at the point of trying to mount an eMac motherboard in a PC minitower so I don't even have to have that cheesy monitor in the same room as me.
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Grizzled Veteran
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I rather like the screen actually.. Only the cheapo front panel makes it look crap, in my opinion.
Anyway, another 1.33GHz eMac is born!
Working very nicely so far. eMacs are a sh!t to take apart though! I had to do it twice too, as I stupidly forgot to reconnect the HD power cable 1st time around. And those micro jumpers are even smaller than I was expecting! Still, got the job done eventually.
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The worst thing about having a failing memory is..... no, it's gone.
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Junior Member
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Leo, what's the pll config for 1.466?
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Fresh-Faced Recruit
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1.4GHz:
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close
close
close
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1.466GHz
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close
close
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1.532GHz
close
close
close
close
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1.6GHz
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close
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Good luck! Guys, when you are at some stable level (with either success or not) please submit to xlr8yourmac CPU db - it's nice to have one place for statistics.
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