I have read the pros and cons of interleaving RAM regarding G3/G4 processor upgrades but here is a twist I was unaware of.
When I interleave new RAM in my 7300 (OS 8.6 and 9.1) with a NewerTech 604e/200 and 512 L2 cache the network (Ethernet10baseT) connection slowed to a crawl. Here's the details. Got four new 128 RAM DIMMs a couple a few weeks ago for my 7300 and 7500 Thought it best to test them; so pulled all the old RAM in the 7300 and installed the DIMMs in slots A4,B4,A3,B3. Ran both Tech Tool's RAM test and RAMometer with no problems indicated. During the following week all apps seem to work OK. And the computer was stable -- except the Ethernet slowed to a crawl. When connecting to the iTunes server; at best the music would start/stop repeatedly. Most of the time the music would not even start and iTunes would have to be forcibly quit. The same slow transfer rate applied to copying files over the network. I checked all Ethernet connections and even tried an another hub -- no go. Then I put the old ram back in and iTunes played perfectly. Then I ran an iTunes test with each of the new RAM sticks. They all worked unless they were interleaved. If two sticks were interleaved iTunes would play music for about 15-20 secs and then stop and then start again. With both sticks interleaved iTunes would basically lock up. iTunes would play OK with all 4 sticks installed if they were not interleaved. Old RAM 4-128's Velocity Upgrades #165N166AB6S + 2-64's from another source New RAM 4-128's Velocity Upgrades #165N166AB62 I'm presently running the new RAM (not interleaved) and has been working. Has anyone experienced this? Perhaps I just missing something obvious, or is this just another example of bad RAM -- any ideas? Thanks --glen (digest mode) -- PCI-PowerMacs is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | -- Sonnet & PowerLogix Upgrades - start at $169 | & CDRWs on Sale! | SPECIAL LIST PRICES - Apple PCI Video Cards from $19.99, MacOS 8.5 CD $79.99 Replacement Parts IN STOCK, Apple CDROMs from $19.99 <mailto:[EMAIL PROTECTED]> Support Low End Mac <http://lowendmac.com/lists/support.html> PCI-PowerMacs list info: <http://lowendmac.com/lists/pci-powermacs.shtml> Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive:<http://www.mail-archive.com/pci-powermacs%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
