what would be the most common problem if the memory is pc133,mb is supports pc133,700EcB0 cpu, but it can't run 133fsb?

[RayEarth]

running win98se with a temp of 21C-26C idle & 34C underload, using a soyo7vca with the latest bios & 2x128mb kingmax pc133 ver1.2, only thing oc is the cpu fsb. Running at 129mhz at 903mhz, the cpu is fine, never have a fatal error or problems of any kind, an increase from 129 to 133 would cause no problems for a few days to weeks, but without warning, the whole system would freeze in the middle of a game, & if i push reset, i get a blank screen & even if i turn it off for half an hour & turn it on, i would still get a blank screen until i move a jumper & clear the bios to make it got back to 700mhz & i can change it back to 903mhz right away & use it without any kind of errors. My conclusion is even though it's a 700E cB0, 903mhz is the max this cpu can go, i doubt it's the ram because it is official pc133 & so is the mb. anyone think my conclusion on of the cpu being the factor that i can't get 133fsb is wrong?

 

[Hawkeye_(BEL)]

You're right. Not every PIII700 cB0 can reach 933. It's just the luck of the draw I guess. You havn't mentioned your voltage. If you have some headroom, you can push it some more perhaps. But don't go overboard, too high a voltage can really kill that little chip.

BTW, don't you have problems with your HD and other PCI periphals ? I mean, at a FSB of 115, my HD is puking random data errors at me. I'm sure my CPU can go higher, but my HD won't I see you're running at a FSB of 129. 129*1/3=43Mhz PCI bus. That's a hefty 30% out of spec. SB Live and HD's are known to do wonky stuff at those speeds.

 

[RayEarth]

I'm running 903mhz at 1.65v, I never up the voltage on any system I overclock, i like to say at default while getting the most out of the fsb at default volt. My PCI are actually running at 32mhz, my soyo7vca has a lof of nice mhz settings for 126fsb i can run the pci at 31mhz & for 129 I get 32mhz & 133/33. therefore, I have no fatal errors, or illegal operations or shutdown hangs, funny thing is, yesterday I did a windows update & it recommended the ide shutdown patch, i decided to install it anyways even though i have no problems, just to keep windows up to date, & after that update, my computer hanged on your computer is now shutting down screen, but lucky it has happen again, & it didn't do a scandisk.

 

[Lycan]

Dude,

Check out this page on the 933EB processor:

http://www.anandtech.com/showdoc.html?i=1247&p=2

See the core voltage figure?

So technically, bumping up the voltage by 0.05 of a volt
isn't technically going out of spec

I'm mean, if its good enough for intel...

HEHEHE

Lycan

 

[osage]

Sounds like you have a good chip, just give it a bit more voltage or live with what you have now.

 

[Stro]

Hey Hawkeye_(BEL), I have 2 hard drives that can do 42MHz; Western Digital 205BA 20.5GB Caviar and IBM 75GXP 30.7GB Deskstar. Now, I know how some people use super cooling and do 167-168 FSB with a 1/4 PCI divider! My SBLive! X-Gamer and my 3Com 56K v.90 modem are also running at 42MHz. I only have a Celeron 300a(Piece of junk) running at a 83MHz bus on my Abit BF6, with the PCI divider at 1/2 and AGP divider at 1/1 so my GeForce DDR is on an 83MHz AGP bus. Maybe it's just my luck. Just telling you guys that it could work. And RayEarth, just follow what they said about increasing the voltage. It's probably that because your components are top notch.

UPDATE!! My system is currently running at 100MHz FSB which makes my Celeron 450 with a 1/1 AGP Divider and a 1/2 PCI Divider so my PCI components and hard drives are running at an amazing 50Mhz (51% out of spec)

 

[chickenugget]

While u guys are at it,
I have a P!!!550E on GORB, MSI BXmaster, MSI Geforce MX, 64 + 32 PC100RAM, WD102AA 10.2Gb HD 5400 rpm on the Promise controller, Sony CD writer and Acer CDROM, Soundblaster 32AWE ISA..yes ISA,

Using the 64 RAM stick alone i can go up to 128 FSB using the MSI Fuzzy Logic, with the 64 + 32 RAM i can only go up to 115. Tried to up the voltage to 1.75 but still cannot get the 133/33.

The problem is i don't have a PC133 stick to test, since i am suspecting the problemis the RAM stick. Any other thing that i sould consider. Have u guys heard of any 550E that would not do 733?

 

[techwanabe]

Chickennugget,

It sounds like it could be your memory. I've been out of the loop for a while, but when I first researched the CPU/mobo combo I was going to build back in April and May, there seemed to be a universal consensus about the P!!! 500E 550E & 600E at the time. All very overclockable and all of them could be successful at FSB 133 mhz. In fact I saw many testimonies of the 550E which I have at 733 mhz using the stock retail fan and without any voltage tweaks. All those situations used decent PC133 RAM tho IIRC.

In my case, my system seems to run stable at 733 mhz, with no more than the usual WIN98 bugs. I use Van Kaams motherboard monitor and OC speed seems to give CPU temps in the mid-40s C although lately I've seen some around 54 degrees, so I think maybe I will look into a better fan/heatsink combo for the CPU just to be sure.

 

[jugornot]

Looks like you did a good job of narrowing it down. Try to borrow some good memory to see if it helps. Or you could go to a local retailer and buy some pc133 and if it doesn't help return it. And remember not all chips are the same quality. Not all cb0 can do 133.

 

[BadThad]

I don't believe it's the ram. Increase your voltage to 1.70v and, most likely, your problems will vanish.

 

[Jhhnn]

I too doubt that it is a memory problem, your kingmax has a strong rep for speed.

It might be the memory settings, however. If you are using cas2, back off to cas3, try again. If you are already using cas3, back off to cas3, fsb-33 for the memory. Your Via chipset has the capability. If none of this works, and 933 remains out of reach, it is likely the processor.

Even if some of this does work, your system performance will likely be better at cas2, 129fsb, 903mhz.

Don't fight it, be happy.

 

[RayEarth]

i changed the voltage to 1.70 & ran 933 without a problem the whole night yesterday, but when i turned it on today morning & was downloading a file it locked up without a error & could only be restarted by pushing reset. I know that my kingmax pc133 ver1.2 has a cas3, but i have always set it to cas2 with all other settings on turbo, & I'm pretty satisfied with 903 at cas2 turbo which is overall faster than 933 at cas3 normal, plus the new crucial 128 cas2 will give me a total of 384mb which should be good enough for a few years. I can fore see my next upgrade should be in the year 2020, by then this computer should have lived a prosperous life.

 

[MaJik]

my friend has 700256ESL45Y from Phili, he can't even reach 900@1.85V its not heat problem either, he's got tons of cooling, it won't even post higher

 

[meister]

Good information here,

What do you think of this (excuse the bh6)

bh6 latest bios
p3 700e
2 sticks of 128 pc133
s/b live platinum
ibm 75gxp 30 gig
toshiba 32X
hp cdrw 8100
adaptec pci scsi card--for scanner and zip
radeon all in wonder 32meg

How high will this go if your a betting man/woman?

Thanks,

Mark

 

[meister]

^bump

Mark

 

[frustrated2]

What powersupply are you using? Well almost any powersupply can run a p3 at stock speed when you try to overclock you need a good powersupply like an antec 303. Also I would try crucial memory as it seems to be the best for this purpose.

 

[Drifter]

Rayearth..just for laughs try moving your Ram in slot2 to 3. I came cross the same problem but on my BH-6. After I changed slots everything cleared up.

 

[RayEarth]

I added another 128mb, so all my slots are full & I don't get much of a performance boost from 903 to 933, so I rather just stick with default voltage at 903 with no problems. I cpu has served me well, therefore I will reward it with not oc it anymore than it can take.

 

[subhuman]

raising the voltage isn't that big of a deal. my brother is still running his 300a at 450 at 2.1 volts, 2 years later, and its fine. i ran my 366 @ 550 @ 2.1 for 9 months, no problems, running this 700 @ 1008, 1.8v, no problems. 903 isnt bad...

btw, i've had Kingmax tinyBGA PC150 running at 143 @ cas2,2,2.

 

[Mikewarrior2]

Keep in mind that the 7Vca(and the majority of VIA based p3 boards) do not read cpu core temp. They use an on-mb thermistor to read cpu temp.

Expect your actual cpu core temp to be 10-12C higher than what your 7VCA is saying your cpu is running at.


Mike