1200 running at 600? Why?

[dgk]

I just noticed that my old A7V motherboard with a 1.2 TB is running at 600. I haven't OCed it for quite a while since it isn't my main machine anymore and it just handles music uploads and downloads and burns CDs.

Anyway, I went through the bios and my choices are 600 or manual. Is this a case of the bridging of the L1 connectors (if I remember correctly) going bad?

 

[Mambo]

It's probably running on a 66 bus instead of a 133 bus

Try turning it back up

 

[dgk]

I don't think so. The bus was 133 I think and the memory 100. Unless I have that backwards. I think I have to get the old heatsink off and take a look at the bridges. Or manually set it. Now if I can just find the manual and get a few minutes to open her up...

 

[papounet]

HMM, have you checked :
- wether you are in jumperless mode
- what the DIP-switch are set to for both FSB and multi

 

[dgk]

Uh oh. I'm a moron. I forgot something important. I think I fried the CPU a few weeks back. Here's the story.

I needed to change the drives around because a burner was working badly and I couldn't get DMA on (Win98). So I opened it up and isolated the burner on its own IDE connector. That worked fine, DMA on, everything purring.

I closed it up and started burning a CD. Then switched the monitor to my main machine (Belkin switcher) and started playing a game demo that came with my new MSI video card (4200). I noticed a beeping that I figured was coming from the game, then realized that it was coming from the 1200 (happily burning a cd). Well, that wasn't the only thing it was burning. The beeping was from Motherboard monitor which was freaking out over the heat.

I pulled the plug.

Seems that the 4 wire power cable that floppy drives use had lodged itself into the fan blades of the Swiftech A462 monster HSF so the fan wasn't turning. After it cooled down I booted and everything seemed ok, so I breathed a sigh of relief and forgot about it.

So that's why it's running at 600. Now the only question is whether I damaged the CPU or just melted the L1 connectors (rear-window defroster gunk). I lean toward damaged connectors because I don't think the CPU would work at all if it was fried.

Ok, time for an operation. Best check my supply of Artic Silver...

 

[JimmyG]

I would guess that the CPU was OK or it wouldn't work at all. I would check the bridges.

 

[dgk]

Ok, mystery sort of solved. I took it apart, cleaned off whatever I could from the CPU, and booted. Still 600. Switched to jumper mode, set it for 1200. Boots and runs at 1200. I left it there and all is happy. I'll have to change my signature. I still don't know why jumper-free mode thinks it's 600. Either the chip is damaged or something on the L1 bridges is still causing a problem.

 

[OC Detective]

You could have left it in jumper free and adjusted it manually.