SI
SI
discoversearch

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor.  We ask that you disable ad blocking while on Silicon Investor in the best interests of our community.  If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.
Technology Stocks : Advanced Micro Devices - Moderated (AMD)
AMD 231.83+1.7%Jan 16 9:30 AM EST
 Public ReplyPrvt ReplyMark as Last ReadFilePrevious 10Next 10PreviousNext  
To: Joe NYC who wrote (11069)10/2/2000 3:55:20 PM
From: pgerassiRead Replies (1) of 275872
 
Dear Joe:

The chipsets for AMD with LDT are in the pipeline just further out (AMD 770?). With the LDT architecture, each northbridge would have its own 4 DIMMS. Thus, an 8 way Athlon SMP would have 4 northbridges each with 4 DIMMs or 16 DIMMs total. Even with a northbridge having no CPUs attached can still allow CPUs from other northbridges to see the memory attached to it. Thus a single CPU in an 8 way SMP motherboard could see all 16 DIMMs. The only true downside is the increased latency to the non local DIMMs.

This then allows any number of DIMMs to be in a motherboard just by increasing the number of 2 way northbridges (This is what I think the AMD 770 is). A northbridge with no CPU pins (or one with the internal CPU pins not connected) could be used to increase the size of memory. These memory server chips could contain on chip caches, interleave the memory or any other performance enhancements.

Thus, it is not necessary to build more than 4 DIMMs into a SMP LDT northbridge. It will fall to the motherboard manufacturers to implement this if, and when, it becomes necessary. The larger size DRAM chips may make this unnecessary (36 1Gb chips is 4GB per DIMM). The Hammer series may be the first to really need this LDT NB method.

Pete
Report TOU ViolationShare This Post
 Public ReplyPrvt ReplyMark as Last ReadFilePrevious 10Next 10PreviousNext  

HomeMailHotSubjectMarksPeopleMarksKeepersSettings
Terms Of UseContact UsCopyright/IP PolicyPrivacy PolicyAbout UsFAQAdvertise on SI
© 2026 Knight Sac Media.  Data provided by Twelve Data, Alpha Vantage, and CityFALCON News