MSI Kt333 and FSB 166

[Pedigreepal]

I have an MSI KT333 Ultra-Aru Mainboard with an Atlon XP 1900+ (133fsb) I would like to upgrade to a 2600+ 166fsb and take advantage of the 1:1 ratio with the PC2700 RAM. The official MSI info says the board only suports XP2600+ 133.
Is there any way i can have a 166fsb CPU working on this system? And by the way, is is all that important to have a 1:1 ratio?

Thanx guys!

 

[Scout]

Sure... I run an overclocked XP1700+ on the 166 MHz. FSB on an MSI KT333 Ultra2 board (similar to yours without the RAID) and it works just fine. I found I had to set the CPU interface BIOS setting to "normal" instead of "ultra" in order to get stability. I'm not totally sure what that setting does, but I believe it has something to do with the L2 cache and I expect I need "normal" since I'm verclocking a slower processor. At any rate, the system specs out properly on benchmarks and I run it 24/7 at 100% load and it runs flawlessly!

Scout
700 Mflops in SETI!

 

[Pedigreepal]

I tried to increase the FSB on my 1900+ to 166, but the system wouldn´t boot. I guess it has something to do with the cpu beeing locked. But if i get a 2600+ at 166 you think the board will support it?
That would be great!

 

[Scout]

Yep... these Athlon chips overclock well up to about 2.1 GHz if you have a "B" stepping. Your only problem with the XP2600+ may be if there is a BIOS issue with recognizing the chip. Your earlier post said MSI says the board is good for the 133 FSB chip, but the 166 chip undoubtably has a different ID so it may cause problems. You might do a search on Google Groups to see if anybody got that particular chip to run OK... I just know the 166 FSB speed works OK on that board.

Scout
700 Mflops in SETI!

 

[Pedigreepal]

Ok, i´l do that. Thanks!

 

[Akimbo]

I just recently bought a 2400+.
I have the same motherboard.
The 2400+ is unlocked (L1's are connected)

The easiest way to OC to 166FSB is as follow;

Take out the processor, and put a small piece of wire in the 2 holes displayed on this site http://www.ocinside.de/go_e.html?/html/workshop/pinmod/amd_pinmod.html
Use the selection tabs across the top to show the correct setup. Its also called the Pin trick or Wire trick or wire mod etc. It was done on the Barton review, but he tied a wire around the pins, to fukn complicated, just do the wire drop in the 2 holes, easy, takes 5 seconds.

I did it, and it works flawlessly, i used telephone wire, very thin but it will work, about 1cm long or bit longer it was. Lye the case flat on the table.

 

[Nights_L]

KT3 Ultra2 is NOT KT3 Ultra
KT3 Ultra2 is like the revision of KT3, which can officilaysupports all the AXP up 166Mhz FSB, not 200Mhz thus

 

[Scout]

The original poster referenced the Ultra-ARU which I thought was the full boat version of the Ultra2... you're saying it's an older version? All the "2" meant was it had USB 2.0

Scout
700 Mflops in SETI!<P ID="edit"><FONT SIZE=-1><EM>Edited by Scout on 07/22/03 00:56 AM.</EM></FONT></P>

 

[pIII_Man]

if the bios gets confused...normally it forces the chip into 100mhz fsb...which can latter be pushed up by the user...many times manufacturers release bios support for cpu's not officially supported by the board...

There is no smell better than fried silicon

 

[ChipDeath]

KT333 chipset was not really designed for 166FSB, only to run RAM at 166(333DDR), asynchronous with CPU FSB. KT333<b>A</b> chipset is supposed to support it however. If you're really lucky you'll be able to overclock to 166, but I suspect something on the board will be unhappy, or possibly your PCI bus will end up out of spec, and some cards may not work.

Really, you should either try to find a 133FSB version of a 2600+, or buy a new mobo...

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$hit Happens. I just wish it would happen to someone else for a change.

 

[TKH]

KT333A chipset is supposed to support it however

There is no KT333A, or should I say the current KT333 is actually KT333A...

If I agree with you... will you shut up?
<A HREF="http://www.anandtech.com/mysystemrig.html?id=22996" target="_new">My System Rig</A>

 

[ChipDeath]

Oh yeah, there isn't in name..

The first KT333 boards did not support a 166FSB, now they do. Why did they not stick an 'A' on anyway?... weird.. bit of a break from tradition for them... KT133, KT266, & KT400 all have 'A' version... odd.
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$hit Happens. I just wish it would happen to someone else for a change.