Front side Bus speed and memory

[quietinthecorner]

Ihave PC66 SDRAM memory does this mean my front side speed is 66mhz

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Whaaa?

[diurnal]

Your Ram or Memory is running at a maxium rate of 66 Megahertz. This is not your Front Side Bus. To find that out you must find the model of your processer e.g.. AMD or Pentium. Usually your front side bus will be around 200MHZ which means you can run PC66,100,133 memory modules. Hope that seems clear.

[quietinthecorner]

Thanks diurnal, now tell me this, I have a AMD K6-2 333mhz it runs on 95 mhz. I want to upgrade UPC to a Amd K6-2 380 (I was told that was the largest I can go w/my socket & mobo)it runs at 95 mhz also will I have problems? I know I have a lot, but problems with the upgrade. http://www.PCGuide.com/ubb/smile.gif

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Whaaa?

[blazer2boy]

Your RAM will work with the new processor. http://www.PCGuide.com/ubb/tongue.gif

For adding the new processor you will most likely need to change the Jumpers on the motherboard. If you need help doing this post back more information on your machine. Mobo model, Sound card , video card.

Cheers http://www.PCGuide.com/ubb/biggrin.gif

Blazer

[quietinthecorner]

Blazer, will any K6-2 CPU@95mhz work? http://www.PCGuide.com/ubb/rolleyes.gif God, I feel the newbie juice running through me!
quiet

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Whaaa?

[blazer2boy]

The question will any k6-2 processor work depends on the motherboard and if it supports the higher processors. If you post back which motherboard you have we could see what info is available. Plus someone who is using the MOBO might be able to answer.

Cheers http://www.PCGuide.com/ubb/biggrin.gif

Blazer


I'm glad to be without ME

[Randy_tx]

If your motherboard is jumperless, you will need to change to the settings for a 380 mhz in the bios under "cpu config" or something like that. If you motherboard is jumper type, you will need to change the "multiplier" setting to "4" @ 95 mhz and check on the cpu chip to see if the cpu voltage is different than the chip you currently run...if different, you will need to change the voltage also by jumper.

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"As hard as a rock & dumb as a brick"...Windows CEMeNT

[Randy_tx]

Does your motherboard support 100 mhz? If it does, you can go all the way to a K6-2 550......assuming you have a 5.5 multiplier setting on the mobo. Again, you will need to check the voltage to make sure you have the right voltage setting for any of these new chips. The AMD K6-2 550 is the fastest Socket 7 chip availale on the market....end of an era http://www.PCGuide.com/ubb/biggrin.gif

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"As hard as a rock & dumb as a brick"...Windows CEMeNT

[quietinthecorner]

The mobo is a Packard hell 950 socket7. Core voltage jumpers 2.2v,2.8v, 2.9v, 3.2v. Intel CPU/Bus x1.5/x3.5, x2.0, x2.5, x3.0, x4.0, x4.5, x5.0, x5.5 jumpers. CPU clock jumpers from 60-100MHz
Onboard L2 cache=512
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Whaaa?

[This message has been edited by quietinthecorner (edited 03-15-2001).]

[Randy_tx]

THIS IS YOUR LUCKEY DAY http://www.PCGuide.com/ubb/biggrin.gif........You can run a AMD K6-2 500 in that puppy if you want to (5.5 multiplier @ 100 mhz & core voltage @ 2.2 volts) you could go all the way to 550 if your mobo could be set @ 2.3 volts. All other AMD K6-2's will run in it as well...ie 300-450.

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"As hard as a rock & dumb as a brick"...Windows CEMeNT

[blazer2boy]

Good morning Quietinthecorner.

Randy is correct you can go up to the K6-2 550mhz it has a FSB of 100.

So you would need to set the FSB to 100. the Multiplier to 5.5

The core voltage should be set at 2.3v according to the AMD website
at www.amd.com (http://www.amd.com)
However you do not have that setting. Randy do you know which core voltage she should use that will work. 2.2 or 2.8. I,m thinking she may need to do 2.8, but will gladly defer to you. http://www.PCGuide.com/ubb/biggrin.gif

This is what I got off the site

Processor K6-2 550 processor
Core Voltage 2.3v
Input/Output voltage 3.3v
Bus Speed 100mhz
Clock Multiplier 5.5

Cheers http://www.PCGuide.com/ubb/biggrin.gif

Blazer

[This message has been edited by blazer2boy (edited 03-15-2001).]

[Randy_tx]

I've never tried going that high (2.8 when 2.3 is called for) over spec before.......since the chip is hot already I would try it at 2.2 to see if it will post up.........but the best thing to do is just drop down to a 500 mhz chip and try it at a 5.5 clock setting using the 2.2 volts...wont hurt anything and it might work! If not.......500 mhz is quick....I really like that chip http://www.PCGuide.com/ubb/biggrin.gif

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"As hard as a rock & dumb as a brick"...Windows CEMeNT

[quietinthecorner]

Kewl, now, can I still run my PC66 memory?(if I go for the 500)
quiet


0

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Whaaa?

[Paleo Pete]

Randy: HTML won't work on here, only UBB.

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Eagles may soar, but weasels don't get sucked into jet engines!
Note: Please post your questions on the forums, not in my email.

Computer Information Links (http://www.geocities.com/paleopete/)

[Randy_tx]

If your PC-66 worked @ 95 mhz it will probably still work @ 100 mhz, but no guarantees.....you will know in a hurry if it doesnt (Lock-ups galore http://www.PCGuide.com/ubb/biggrin.gif)

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"As hard as a rock & dumb as a brick"...Windows CEMeNT

[Vic 970]

I have another post running in the 'How do I forum' which has been going for months. It's now at the stage of suspecting the processor of overheating. Either SiSoft Sandra or Pitstop reports that the system bus speed is too high. Having read this forum, could it be that this is causing my problems? in any case, can you tell me how to check it & correct it.

Cyrix 6 x 86 : PR233 : 188Mhz



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Regards..,
Vic.

[Paleo Pete]

Think I'll butt in here. http://www.PCGuide.com/ubb/biggrin.gif

I remember the topic you're referring to, seems it turned into a book...I think your main problem is the Cyrix chip. I like them, but they don't get along with win98 too well. They also run hot, and if the system bus is too fast, I'd bet you have heat problems as well as problems from being overclocked. Yes, I know 188MHz is the proper speed for the Cyrix 233, but if you get it by running the system bus too fast, it's still overclocked.

I think the best thing to do is drag out the manual and go over the jumper settings, get it set correctly for that CPU. I don't have the specs handy, so I can't give you any suggestions, but my board will handle that CPU and says it should be set on 66MHz system bus, 3x multiplier.



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Eagles may soar, but weasels don't get sucked into jet engines!
Note: Please post your questions on the forums, not in my email.

Computer Information Links (http://www.geocities.com/paleopete/)

[Randy_tx]

My manual(Amptron) shows the PR-233 should be set @ 75 mhz as a P-55C with a 2.5 multiplier(which achieves 187.5 mhz)....@ 2.9 volts. There always was a debate about what mhz & multiplier should be used for Cyrix chips & many times it was trial & error that produced the best results. My experience has always been best with Cyrix when I used the lowest Bus speed (in this case 66) and a higher multiplier (in this case 3).

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"As hard as a rock & dumb as a brick"...Windows CEMeNT

[Vic 970]

SiSoft Sandra report = 75 Mhz but I can't find a 2.5 or 3 multiplier. Have looked in Setup in startup screen but can't find anything there either.
Can you tell me where I can find and change the settings.

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Regards..,
Vic.

[blazer2boy]

Vic what motherboard do you have? Does it have Jumpers on it?
If so you will need to get the manual to set the jumpers correctly.


let us know.

Cheers http://www.PCGuide.com/ubb/biggrin.gif

Blazer

[This message has been edited by blazer2boy (edited 03-20-2001).]

[Vic 970]

Motherboard is a Jetway, (7 socket? I am told) I was also informed that it does have jumpers on it. I do not have a manual. http://www.PCGuide.com/ubb/frown.gif

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Regards..,
Vic.

[Randy_tx]

With the power UNPLUGGED of course http://www.PCGuide.com/ubb/biggrin.gif ... look ON the motherboard for INFORMATION about jumper settings stamped onto the motherboard (hopefully your mobo has them) ...you have to look closely, but you can do it even without a manual...;however, you might be able to GET a manual ON LINE by going to the Jetway web site.

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"As hard as a rock & dumb as a brick"...Windows CEMeNT

[Randy_tx]

Here is there web site: http://www.j-mark.com/PRODUCT/others.html

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"As hard as a rock & dumb as a brick"...Windows CEMeNT

[This message has been edited by Randy_tx (edited 03-20-2001).]

[Vic 970]

Thanks. Have found the site, but my mobo (J571B) is not listed. I have e-mailed them & have found a similar board that uses the Cyrix 233.

Also I think I have found the Jumper: A block with 6 switches on it. the settings at the side of it are: 1 - 3 (combinations relative to 2,2.5,3,4.5 etc) 4 - 6 (combinations 50Mhz, 66 Mhz, 75 Mhz etc) It appears to be set at the moment at 2.5 x 75 Mhz.

If thats correct, It looks time to get ready for experimenting, & I suppose the first thing is to try 3 x 66 Mhz. But for curiosity at this stage, if the processor IS getting past its best would UNDERCLOCKING help or is this risky to try?



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Regards..,
Vic.

[Randy_tx]

I have underclocked a few Cyrix chips (usually by no more than 33 mhz) when the chip was unstable at the correct clock(primarily the Cyrix 200 which I had Tons of trouble with); however, in your case I dont advise it. Try the 66 mhz setting even though it calls for a 75 mhz setting .

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"As hard as a rock & dumb as a brick"...Windows CEMeNT

[Vic 970]

Have set it to 66 & all seems well. it now shows the cpu as 200 instead of 230 & its a little slower in some seldom used progs. but otherwise not a problem.

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Regards..,
Vic.