[eclou]

I recently bought an older OWC 1.467 upgrade card on eBay. It is based on the 1.25 mhz chip, 2gig SDRAM. The card works great at 1.467 without freezes, TechTool checks out fine, XBench processor scores consistently in the upper 170's for processor categpry. Problem is it screeches like hell when it is loaded. It is not a bad fan or a loose vibrating heatsink as far as I can tell (I disconnected the fan, held onto the heatsink, etc with no audible change).

My Sonnet 1.4 is dead quiet by comparison. I was wondering if this is normal?

[outsourced]

You might want to contact OWC support.
One thing to try to do is reduce the clock speed to 1.2GHz and see if it stops screeching. OWC should be able to help with those settings, if it is possible.

[suvsr4terrorists]

screeching= mechanical noise. It's probably the fan. Buy a new one. Chips don't emit noise.

[outsourced]

Originally Posted by suvsr4terrorists

screeching= mechanical noise. It's probably the fan. Buy a new one. Chips don't emit noise.

I thought it might be his fan, too -- until I noticed he said he unplugged it.

As for chips not emitting noise: Haven't you ever heard a video card do that? I've even heard noise from CPU's in devices. Had a programmable calculator once where I could actually hear it cycling through a program. Weird. Of course, it's probably not the CPU per se. Could be from other support circuitry (Power?)

Any electronics gurus care to elucidate?