A7V + Jumper settings

[SebNukem]

Hello all,

So, I finally got my A7V 1.03 1004D, and plugged my new Tbird 1.1GHz. The board is set up in Jumper Free mode, meaning that all the jumpers on the board are useless. So far, everything works fine. My CPU runs at the expected 1100Mhz (100 bus speed X 11 multip.).

Nevertheless, I have 2 unanswered questions:

1. Looking at the BIOS setup, it appears that my memory only runs at 100MHz. When I try to set the mem. speed at 133, the machine refuses to boot and put the mem speed back to 100. Of course I'm pretty sure that I have PC133 chips (unless somebody screwed me). Any clues?

2. In preparation of future o/c-ing, I cancelled the Jumper-Free mode and restarted the machine without changing any jumpers (i.e. it is setup to 100 X 11.0). After reboot, it appears that my CPU is now running at 1220MHz! Of course, lacking a proper cooling, the whole thing locked up after 5 min. Is it possible that the mobo jumpers are not what they are supposed to mean?

Has anyone ever seen these before?

Thank you.

Sebastien

<P ID="edit"><FONT SIZE=-1><EM>Edited by sebnukem on 01/18/01 12:14 PM.</EM></FONT></P>

 

[JOJO]

for the mem problem

1. what brand of memory

2. there should be a bunch of numbers on the ram chips themselves, once you know that, check them on the manufactures site (if it's brand name)

if not, look at the numbers and if you see 100 in there anywhere, you probably have pc100.

again, it's best if you check the manufacturer's site, they usually have details on the serial numbers

for the cpu problem,

did you connect the proccessor's bridges? (to unlock the multiplier)

1st, i'd try to flash the bios with a more recent version,

to get 1220 Mhz, you'd have to have a wierd multiplier and fsb setting, so re-check all your dipswitch settings as well as jumpers. Check for the exact settings on the asus site.

hope some of this helps.

 

[Lowlypawn]

Go to asus.com and print out the jumper settings.
Some of the manuals are wrong!!!
This caused me days of frustration.

 

[Bubba]

Get the jumper setting at the asus web site.
And if your ram will only let your computer boot at PC100 then your ram is only PC100 or it is generic, crappy ram.

 

[Guest]

1.Memory
How many pc133 Dimms are you using? Indevidualy rated DIMMs often fail to run at that rating when combined. Usualy increasing timing states (ie go from cas2 to cas3(see below)) fixes the problem. If your DIMMS are already rated at CAS3/8ns (very common) You may have to drop down to pc100 speeds when you use more than one of them.

The bios settings for memory on the A7V allow you to select memory timing as well as speed.
The timing settings are:
SPD -(the bios uses what your memory tells it to, not always correct but usualy conservative).
8ns- Sets timing at 3/3/3
7ns- Sets timing at 2/2/2
Manual- Allows you to assign 2 or 3 wait states to each of the three settings.

Set your memory speed to 133 and choose 8ns. Save your options (f10). If your system does not POST, press reset and all your settings in bios should to return to default settings (sometimes it takes 2 or 3 tries or a cold boot).
Once the system resets it should automaticly take you back into Bios Setup. Look for ClkGen Spread Sectrum in the advanced chipset setup section. Disable it. Go to memory settings and change them back to 133 8ns. F10.<Y>

If this doesn't work try running at pc100 2/2/2, 2/3/2, and 3/2/2.

2.Jumper Settings
The Jumper Settings in your manual for the Athlon are correct (only the duron instructions were wrong and not in later editions of the manual). Note that the dip switch blocks are "upside down" when your mobo is mounted in a tower case and that in the manual WHITE = dip-switch position, BLACK= Jumper position.

 

[Bubba]

sorry geogjr, I'm pretty sure that the jumper settings for the A7V don't come in the Duron or Athlon chip manuals.
You can find the Asus A7V jumper settings here:
<A HREF="http://www.asus.com/products/Motherboard/socketa/a7v/jumper.html" target="_new">http://www.asus.com/products/Motherboard/socketa/a7v/jumper.html</A>

And why would it matter if it was a Duron or an Athlon? A multiplier is a multiplier. Its either at 11 to make 1.1Ghz or it isn't. I don't think the cache of the chip would make a difference as far as the multiplier is concerned.
Please explain.

 

[SebNukem]

I solved my jumper settings problem: the drawings of the jumpers in my A7V book are all printed backward (!).

For the memory problem: I must really have some crappy memory. I tried everything. My PC does not POST when it's set at 133, whatever the speed configurations.

Thanks all

Sebastien