Advise

[Chris]

Not sure wether this is the right forum but here goes. The problem is i cant run my CPU @ 133MHz system bus the reason being everytime i get this message "BIOS rom cheksum error PLease insert system disk and press enter" How ever if i run it a little under say 130MHz it runs fine. But this means my memory is now running at 130MHz aswell. My question is this, is the extra FSB worth a drop in memory?? also does running 130MHz bus mean that my AGP and so on is working slower??

 

[AntiHeiss]

Yes, it does mean that everything in your system is working slower, but not THAT much slower. 3FSB points isn't a whole lot. My big question is...is your processor supposed to be 133FSB by default? Is it a 266MHz FSB processor or a 200MHz FSB processor? That will explain a lot and I'll run back through this thread after you post and we'll get this problem figured out.
Thanks

 

[RnPgrosz]

Did you lower the mulitplier from 9? I don't think that 900 Mhz Athlons are 266fsb.

 

[Chris]

The processor default is 200FSB and yes i did lower the muliplier it seemed that whatever multiplier i used if there was a 266FSB present i would get the bios error.

 

[Chris]

oh yeah sig need updating im currently running 100*9.5 with about 38 idle

 

[Sonny]

What chipset does your MoBo have?

 

[AntiHeiss]

Well, I think your best bet is to just drop your FSB a couple points and not worry about it. That may be the ceiling for your CPU and system as a whole.

 

[Chris]

My motherboard uses the kt133a chipset, do you think by dropping a few fsb to 130 system bus i will loose much bandwidth on the AGP slot, there must b more bandwidth than usin say the default system bus of 100 ??

 

[David]

My motherboard uses the kt133a chipset, do you think by dropping a few fsb to 130 system bus i will loose much bandwidth on the AGP slot, there must b more bandwidth than usin say the default system bus of 100 ??

At 133Mhz, AGP = 1/2 or FSB and PCI = 1/4 of FSB.

So at 130MHz:
AGP = 65MHz (lost 1 MHz)
PCI = 32.5MHz (lost 0.5MHz)

Shouldnt hurt performance that much.

 

[The Coolest]

What is the memory timings that u r using I had problems running my memory at 133 or above (in my duron system) w/o it failing, after I set it from CAS2 (2-2-2) to 2-2-3 the problem went away.

*EDIT* or maybe ur chip just needs a lil bit more Vcore

 

[Chris]

well i set the memory to use 133MHz in bios cas 3, but when using 130 bus it only runs at 130 according to cpuid

 

[Sonny]

KT133A supports 133MHz/266FSB now the only thing we need to find out if your CPU can. What happens when you set it at 6.5 X 133? If it's stable could you run Sandra benchmarks to compare it to 9 X 100 so we can all see the difference

 

[Chris]

ill try that soon and post sisoft benchmarks

 

[Bruno]

Check to see if there is a jumper on the motherboard itself, for 133mhz.

 

[Chris]

Heres the benchmarks, it will run at 133*6.5 but anything after that things start to happen i.e bios problems.

 

[Chris]

Multimedia benchmark

 

[Chris]

Sorry if they seem a bit small

 

[Sonny]

Well the higher clockspeed wins obviously;

9 X 100 = 900MHz
6.5 X 133 = 864MHz

So that wasnt news. Did the 1/4 divider kick in or did you have to set it in the BIOS or did you have to physically flick a switch on the board? Try the slower ram timings if you have them.

How about;

6.5 X 139 = 903.5MHz
7 X 133 = 931MHz

A few questions;
1. How familiar are you with the BIOS and/or switches on your MoBo?
2. How is your understanding of tRAS, tRP & tRCD?
3. Have you done a BIOS Flash before? Reason being that some of the preset values for the above parameters might have changed
4. What are the temps & voltages like?
a. CPU
b. NorthBridge
c. Ambient

 

[Sonny]

Sorry if they seem a bit small

Try doing a Alt+Print Screen while the window is not maxed. You should be able to get a better cap that way & you only get the top window

 

[Chris]

Well the higher clockspeed wins obviously;

9 X 100 = 900MHz
6.5 X 133 = 864MHz

So that wasnt news. Did the 1/4 divider kick in or did you have to set it in the BIOS or did you have to physically flick a switch on the board? Try the slower ram timings if you have them.

How about;

6.5 X 139 = 903.5MHz
7 X 133 = 931MHz

A few questions;
1. How familiar are you with the BIOS and/or switches on your MoBo?
2. How is your understanding of tRAS, tRP & tRCD?
3. Have you done a BIOS Flash before? Reason being that some of the preset values for the above parameters might have changed
4. What are the temps & voltages like?
a. CPU
b. NorthBridge
c. Ambient

Where to start, lol
1. Im quite familiar with my bios and switches on my board
2. tRAS, tRP & tRCD what, i have no idea here???
3. I flashed the bios not so long ago to the latest version available at the soltek website
4. well im currently running 38 idle 42 load with 130*8, the northbridge has the stock heatsink on it there is no fan or anything present there. Case temp is 22 as i type