The 6400 Zone image

Your source for info on the 5400, 5500, 6360, 6400, 6500 series Macs!
navigation map #1link Homenavigation map #2link mac os infolink forumslink magazineslink software linkslink help linksnavigation map #3link readers reviewslink equipment for salelink geo modem infolink 6400 clocking infolink l2 g3 info
   Search The 6400 Zone       powered by FreeFind

6400 image The 6400 Zone

home banner

Just Updated 6/7/2002

New domain name!: I finally bought my own domain name :) Now you can access this site from:

Isn't it about time! Plus I was able to make 3 more useful links: to link to the forums site to link to the Mac Equipment for Sale site to link to the search engine.

I hope you will all enjoy using my new URL's :) Have fun!

iTools web site bandwidth, an answer from Apple: Here is the official response from Apple on the bandwidth limitations they imposed on their user web sites such as mine.

[Tom and others,

Apple has recently implemented bandwidth limitations on iTools HomePages. If an iTools user’s website receives more than 500 hits in a six-hour period, the user is limited to roughly two times their iDisk capacity of data throughput in that six-hour period.

iTools users who have upgraded their iDisk capacity will have additional bandwidth. If an upgraded user’s website receives FEWER than 500 hits in a six-hour period, the user is limited to roughly 14 times their iDisk capacity in that six-hour period. If an upgraded user’s website receives MORE than 500 hits in a six-hour period, the user is limited to 2.5 times their iDisk capacity in that 6 hour period.

When these limitations are exceeded, that iTools user’s websites will be disabled for a period of up to, but not greater than, 12 hours. The limits stated here are subject to change without notice.

We apologize for any inconvenience that this may have caused.

Apple Support Discussions ]

Well that's it. I know why I was shut down. From reading the site statistics that Don has given me, I am surprised they did not shut me down before :) But for the other users that are completely within normal usage guidelines to also be shut down seems very unreasonable! I think their limits are way to strict and Apple should rethink the limitations. I won't be going back but I would hate to see a mass exodus just because of to strict bandwidth limitations :(

USB driver issues confirmed, cause problems with Sonnets Tango cards and 5500's: Kostia sent me a reply from Sonnet that was not to encouraging about this issue? Thanks Kostia.

[I have exactly the same issue with my PM 5500 and I did try new tango patch but without any changes, USB extensions still causing freezing. I sent email to Sonnet and after long time I got this response from them:
We've had a scattered few reports of this odd behavior (less than 10 reports in a year) and we can't duplicate it here in the labs at Sonnet so there is no way to tell if we're causing the problem or it's something unique about the person's computer.

So unfortunately I don't have any solution to your problem. The workaround
seems to be the one you discovered and that's turning off the USB extensions. I'd use Extensions Manager or Conflict Catcher to create a set of extensions for this purpose.
Sonnet Customer Service
If you (or any body else) will get any solution I will be glade to hear it.

Some 6500 owners have also reported having spontaneous freezes for no reason. I haven't heard from other combo card owners yet so it may be limited to just the Tango card? If you own a combo card and have random freezes, try removing the USB drivers and if it helps, write me. Thanks.

Sonnet gave up on L2 G3 cards causing audio stuttering issues!: John wrote to let me know about his problems with Sonnets L2 G3 causing audio issues as many other people have found. He asked Sonnet for help and eventually they gave up and told him to return the card :( Sigh! Thanks for the info John.

[Well Sonnet technical support finally gave up and told me to return the Crescendo card and use the money to buy a new Mac. The extent of the troubleshooting was to turn off virtual memory, or the Norton disk light, or to update all of my drivers for either my video card or my Comm II network card. Nothing worked!

My final solution was to install a separate firewire card and separate USB card in the two PCI slots and that finally fixed the problem. Unfortunately, I had to pull my ATI Xclaim VR card to make room for the two cards. I gave the Tango card to my sister who has a G3 233 desktop with a Sonnet Encore G4 500 upgrade processor and she had no audio problems with the Tango card installed.

The bottom line is that the Tango card just isn't compatible with the 6400 with a Crescendo L2 card installed.


Personally I do not think the issue was with the Tango card in Johns case. I believe the issue was with the ATI video card as others have mentioned. John just happened to remove both the video card and the Tango card at the same time. But it could really be the issue of Apples USB drivers being used with the Tango card causing his problem. It has mostly been 6500 owners experiencing this problem as mentioned above. Could this be the first incident of the Tango card causing issues on the 6400 as well?

Final info on the 6400's VRAM, hopefully: Daniel sent me an Apple spec PDF document that clearly states the 6400 has 1MB of VRAM soldered on the mother board. I am not sure if Daniel other statement about Apple not using main memory for VRAM on any Mac is true or not as I noticed the 6100 does not show any VRAM soldered on the mother board? But its more food for thought and unless more evidence showing that this is false can be shown, I'll have to say the 6400 does indeed have 1MB of VRAM soldered on the mother board :) Thanks Daniel

[Hi Thomas!

The 6400 has 1MB of VRAM soldered on the motherboard. The 6400 doesn't use
some part of the 8MB RAM on the motherboard to stock video data. I think
that Apple never used this poor technique in the past on any model.

Please check the attachment file of this message. It includes all memory
configuration for the Mac for models up to 06/1999. Under the Performa
section you will see "soldered VRAM = 1MB" for the 6400. It's an Apple
official guide and I don't think that it's restricted. You can post it on
your web site. Others could have a more recent version of this file.

Have a good wee-end!


The entire PDF is to large to post but below is a picture of the 6400 page. Note the area I highlighted about the VRAM.

6400 memory guide image

Here is a link to Apples site where you can download the entire PDF document. Now remember, Apple could have made a typo. But for now, this stands.

Audio recording apps: Lennie sent me some info on using a free version of ProTools on his non-G3 upgraded 6400. Thanks Lennie.

[Hey There - I just wanted to thank you for such a great site, the resources here have been a big help in learning my way around this machine - I got my 6400/200 for 30 bucks at a thrift store and it rocks - literally, which is why I am emailing. For anyone who's interested I am using free Pro Tools for recording 16 bit audio at home and having great success with a non upgraded machine. The Digidesign website says that you need at least g3 to use free PT, but I gave it a try anyway and it's awesome. I thought there might be a few people out there who'd be interested in knowing that it works well on my machine w/o out an upgrade. You do need an outboard mixer of some type to regulate the line levels coming in and I maxed the CPU dedication in the PT program to get it rolling. You also have to pull the levels of both your previously recorded and incoming tracks way down when monitoring tracking to over come the latency issues, but other than that I'm getting great results and having a blast. I'm a bit of a novice at digital recording, so I hope this all makes sense - I just wanted to share this with anyone out there who might be interested in doing home recording without throwing down the cash for the g4 or g4! Thanks again, Lennie
Thanks again Tom - here's the link to the download - - I think that the manuals also are on that site, though it might be a separate download. They're pretty extensive, but you kind of need them to get going unless you know someone to help you get started. Let me know if I can be of any other assistance - take care, Lennie]

Broken SubWoofer knob adhesive: Tom sent me some info on gluing your subwoofer knob back on if it has broken off. Thanks Tom. Click here for more info on fixing the subwoofer volume knob.

[I was cleaning my 6400 and broke off the sub woofer knob while removing the back cover. My experience is that super glue or epoxy glue crack too easily to be used on something that has stress put on it.

I found a new shock resistant adhesive that I fixed my knob with and it has held up with no problems. (I turn my volume down almost every morning so I don't awake the wife when I boot-up my 6400) Its called "Power Poxy Stix-On Contact" and was under $2 a tube at Wal-Mart. Might be the fix for other users with the same problem.

Update on S-Video / Composite out card: Alec had sent me some info on this card awhile back and he finally got one. He says it works great except you must run in 640x480 at 60Hz or you won't get any display on the TV. Click here to read more about this card. 640x480 at 60Hz is the standard used for displaying a computer video signal on a TV. Todays technology in newer Macs allow for higher resolutions but you still must set the refresh to 60Hz or it will not display on the TV.

Click here to view his previous info.

Radeon 7000 in a 6400: Tom posted in the forums that he installed the ATI Radeon 7000 video card in his 6400 and it works fine. Thanks Tom. I asked if he could try running dual monitors on the card since that is one of its selling points. I'll let you know if it works when I know :)

[Just completed installation of a ATI Radeon Mac Edition in my G3 upgraded 6400. The installation went very smoothly and everything looks ok. The video difference is really amazing. Purchased the card from for $107.00. I am running OS 9.1 and to achieve full 3D graphics you need OpenGL 1.2.2 from OS 9.2.1.]

Another CD Audio cable hack: Tom sent me some nice instructions and pictures showing his hack to make a CDROM that does not fit the 6400's special audio adaptor, work. Thanks Tom and sorry it took so long for me to post this :(

L2 G3 Info

Spec Comparison Page
L2 G3 reported temps

user letters
install review
Vimage drivers, latest

Sonnet Tech
user letters
install review
hack for stability
Sonnet clocking
Mac OSX support
Crescendo 1.4.2-1.4.5

Newer Tech
user letters
Newer MaxpowerG3 drivers

Power Logix

Misc Info

6400 Clocking Info
6400 TA manual
Alternate OS's
Archives: 6400 Zone
ATI Rage128
Audio help
Audio/Video Stuttering
Avid Cinema
Backup Battery (UPS)
Cable/DSL Modems
CD/DVD Drives
Cooling The 6400
Digital video help
Firewire and USB cards
Geo Modem
Gaming News
Help Links
IDE Adaptor cards
iMovie info
iTunes / iPod
MacOS 7.5.x - 9.2.x info
Mac Equipment for Sale
Magazines / Online Sales
Magma PCI Chassis
Misc Mac Info
Readers Reviews
Software Links
TV/Video System
USB and Firewire cards
Voodoo 2
Voodoo 3
Voodoo 4/5


6400 Icons
ColorStyleWriter4000 OS 9
Disk Tools 8.5 with CD extension
Geomodem Shutdown
MicroConversion video card
Newer MaxpowerG3 drivers
OS 9.2.1 install hack
OS 9.2.2 install hack
OT 2.6 and OT 2.6.1
SetVolume to 1 script
Sonnet Clocker
Sonnet Clocker II
SonnetCrescendo 1.4.2-1.4.5
UK Telecom software
Vimage drivers, latest
Voodoo2 beta drivers

Voodoo3 beta 12 drivers


The 6400 Zone-
6400 Zone Forums

Discussion Forums
Legacy Hardware

Accelerate Your Mac-
Mac Forums

MacSpeed Zone-
6400 Forums
Help Forums

Tech Support for Macs-


Click to view The 6400 Zone Archives

CD containing The 6400 Zone plus past history for sale 9/3/1999

I was wondering if anyone would be interested in purchasing a CD with my entire up-to-date site as well as my 6400 Take Apart Manual? Plus, many of the past Just Updates included! I think this would be a great idea for anyone who hasn't been able to keep up or never saw my site until recently. Also for those of you with Sherlock, the CD is even better cause you can tell Sherlock to index the CD and then you can do a search on any topic, and if I ever talked about it, you'll find it! I have info as far back as mid 1997. I'm asking $10 US which includes shipping, and I will even include a few surprises! To make this offer even juicier I can add some download that you've been trying to get but just couldn't for some reason. Lets put my cable modem to work :) I will accept personal checks but I won't mail out the CD till it clears.

Please include your shipping address and email so I can let you know the CD is on its way., books and more 7/2/98

I found a great way to earn some money while getting great deals to you on Macintosh books and software plus they have all kinds of other books, music, and more. Please click on the link on the top of this page whenever you feel like purchasing something to help sponsor this site. If you're unsure of what you want and wish to get a list of Mac related items, just type Macintosh in the search field on their home page and you will be presented with many choices to select.

The 6400 Zone is created to help you gain access to useful software updates and great shareware programs that add functionality to your system. It is also a one stop road map to other informative sites for answering your questions. Most of the info here is geared towards the 6400, but it is useful for all PCI Performa models and even the 6500 and all-in-one Macs based on the same. It's even useful to other MAC systems. I will be referring to my 6400/200 clocked to 220Mhz as just 6400/220, OK.

I will keep it updated as often as I can but I don't have much free time to work on it, so I suggest you check back at least once every a week. That should be sufficient. If you don't see something you would like to see here or have your own software / web site that would benefit the Mac community, please write to me at and I will check it out.

I use a Performa 6400/Vimage G3/320 OS 9.1, Beige G3/266 OS 9.0.4 with ASIP 6.3.2, B&W G3/350 OS 9.2.2 / OSX 10.1.3, iBook Dual USB OS 9.2.2 / OSX 10.1.3, PM 6100 G3/240 OS 9.1, and a PowerBook DUO 270c OS 7.5.5. If I encounter any problems, I will post them for all to read and respond to. Likewise, if you are having any problems and would like help just email me and if I can answer it I will, or I will post it here for others to read and respond to.

If any of the links do not work properly, please send an email to me the Site Master
This page last updated 6/7/2002

This page and all the others in The 6400 Zone web site are the sole property of Thomas Koons and The 6400 Zone
Any duplication must have prior consent from Thomas Koons

Made With A Mac Internet site of the month by My Mac Magazine Mac crushes PC