Kt3-amd1800xp-98se-ram trouble-

i have a ram problem, i have the kt3 ultra2,ms-6380e, win98se,with pc2100 512mb, amd 1800xp,ati radeon 9000 128ddr, (2) western 60gb hdd. the problem is i can't add more ram chips. board can goto 3 gb but i heard win 98se will not. is there a patch or fix. sorry to sound dumb on this but i am at a wall. i love games and want to boost them. oh, also what is best way to adjust multiplyer and voltage? and help or site to get fixes will be loved. thanks

Hi!
You are right about W98 - it will normally not be able to use more than 512 mB. I know there is a fix for that and it can be downloaded from the Microsoft site.
I am not sure, however that adding more RAM will boost the performance of your system, actually I guess that it will not show ...
If you want to spend money anyway, I would suggest to look into an upgrade to W2K or XP because these Operating Systems are both considerably faster than W98: If the games you want to play are not too old and if you do not have very old hardware (scanner, printer, etc.) such an upgrade would not be a big problem (and it will solve the current RAM problem as well).
Hans

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hi nailz,
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Hello,
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Code name ClawHammer
Brand ID 4
Socket 754
Technology 0.13
Family F Model 4 Stepping 8
Ext. family F Ext.Model 4 Revision SH7-C0
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Chipset VIA K8T800 (VT8383) Rev 01
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frequency 166.7
FSB: DRAM CPU/12
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RAS# Precharge 4 clocks
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Manufacturer OCZ Buffered No
Part Number OCZ400512V25 EPP no
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Okay, this is my first time taking it to a forum for help, so dont let me down guys.
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Quote
Originally posted by modelt
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Support for mismatched DIMM sizes per channel .
For Revision E and later revisions the Mod64BitMux bit (Function 2: Offset 90h bit 6), can be used to
configure the 128-bit interface as two 64-bit interfaces for 939 packages. This mode allows
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Ref:
BIOS and Kernel Developer's Guide for AMD Athlon 64 and AMD Opteron Processors

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To maclover and DaddyPaycheck and all concerned readers
I successfully solved my problem of "disappeared" RAM memory (DDR400) on my PowerMac G5 2x2 GHz ( (July 2004 model with 8 DIMM slots). Mostly with help from two readers - namely MACLOVER and DADDYPAYCHECK who reacted quickly to my call for help, both with a very good advice. And I thank them for that. Because it's really helpful when you're faced with a serious problem never encountered before.
So, being now out of trouble I wrote this "debriefing" note to testify about the process of how to identify and solve the bug.
This could possibly help other "normal" Mac users... I mean non-expert like me.
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I discovered the "missing" RAM just by chance after looking at "About this Mac" and "System Infos" after updating my OSX Tiger system from 10.4.5 to 10.4.7 and 4.8. "About this Mac" mentioned only 1 Go of RAM (instead of 2 Go physically installed 2 years ago). The "System Infos - memory" panel" confirmed that only my four 256 Mo DIMMs were "recognized" and "active" (mentioning type, speed and "state" OK). My two 512 Mo RAM units have "disappeared" and the DIMM slots were identified as "empty"! This diagnosis has been confirmed by "Onyx" and Mac Pilot" utilities. So, it's trustable.
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2 - No software nor system debugging
First, I suspected the OSX update to have changed something about the RAM's recognition by the System. So, I tried usual maintenance and correcting actions - repairing authorizations, restarting the Mac (even as single user), zapping the PRAM, etc. Then I reinstalled Tiger including a "clean install" from the Tiger DVD. Without any success... Because it has been later demonstrated that intrinsically this kind of "hardware bug" cannot be solved by software "manipulations"!
3 - Solution : Reinstalling the RAM
Thus I decided to turn to the RAM's direct check, as suggested by the two readers.
Initially, I was quite reluctant to put my hands on the memory hard because I never did it. But I found it rather easy to do. After reading the Apple knowledge base's memory replacement guideline ... and taking special care of static electricity (wearing a wire bracelet connected to the G5's case). This point is important as static electricity could definitely damage RAM memory cards.
So I removed the two 512 Mo DIMMs from their original slots and re-installed them into the adjacent pair of slots (in place of two 256 Mo DIMMs).
At the first restart under Tiger 10.4.8.. Bingo : "About this Mac" and "System Infos" panels displayed the expected "2 Go" of RAM. Both the RAM memory cards and the DIMMs slots are OK.
4 - The "Lessons" learned from this troubleshooting.
In conclusion, I would say that above-mentioned readers were right : in such case - "no show" RAM - the best option is to remove and inspect the DIMM and then - if cards and connectors looks good - to reinstall it correctly ... and carefully!
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I would also strongly recommend to run the "Apple Hardware Test" (AHT) software to get a more detailed diagnosis. For example, AHT gave me the error message :"post/O/2048/DIMM5/J42".
While being unable to find a list of POST error codes, I can now try to "reasonably explain" this kind of error message I got. The "Power-on Self Test" (POST) item "0/2048" obviously refer to the RAM size : total "installed" RAM was 2048 Mo (2 Go). But the "0" prefix means that zero Mo were "recognized" (or "active") from some DIMM card(s). Then the "DIMM5/J42" item pointed out to the fifth DIMM (J42) that, in my case, was the "single failure point". But, of course, as RAM is working by pairs on the PowerMac G5 bipro. if just one DIMM "failed" the associated DIMM is also "neutralized" - even if it does not "failed".
Finally, this RAM trouble makes me more comfortable to do still "simple' - but sensitive - maintenance and repair inside my Mac... while being 65 with no special skill in computer's knowledge. So I would say everybody else can succeed too.
Again, many thanks to MacLover and DaddyPaycheck for quick help ...
and Christmas Greetings to all Apple Discussion readers.
Power Mac G5 biprocessors 2 x 2 GHz (July 2004) Mac OS X (10.4.8)

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Kt3-amd1800xp-98se-ram trouble-

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