In a message dated 3/28/02 10:57:10 AM, PeterH5322 writes:
<< Chips ... mT, marked with "4LC16M4G3-5", in second order (speed probably 50 ns) >> >From Micron Technology's web site ... Micron does not recommend using 64Mb EDO/FPM DRAMs in new designs. Micron recommends using synchronous devices for designs needing production support beyond 2002. Organizations/Packages Micron's 64Mb DRAM support includes the 4 Meg x 16, 8 Meg x 8, and 16 Meg x 4 organizations. All packaging conforms to current JEDEC standards. The x16 device is packaged in a 400 mil, 50-pin TSOP II, and the x4 and x8 versions are packaged in a 400 mil, 32-pin SOJ and 400 mil, 32-pin TSOP. Micron's 64Mb DRAM device is currently shipping in volume. Modes/Speed Grades Micron supports Fast Page Mode (FPM) and Extended Data-Out (EDO) on the 64Mb DRAM. Micron provides only 50ns speed grades. ... bottom line: All 168-pin 5-volt FPM/EDO sticks from Velocity Upgrades which utilize Micron Technology chips are *50* nanoseconds, irrespective of what the label on the product, or what the web site says, and this design (64 Mbytes, 16 Mbits depth by 4 bits wide) may be discontinued after this year. Practically speaking, *60* nsec is the fastest that any stock or G3-upgraded "legacy" Mac is likely to be able to take advantage of. Peter. -- 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! | PowerON Computer Services <http://www.poweron.com> REPLACEMENT PARTS in STOCK Drives, CD-ROMs, RAM, Mac OS SW, Power Supply <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
