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) -- Ignore unavailable to you. Want to Upgrade?

To: Joe NYC who wrote (23755)1/2/2001 7:20:04 PM
From: fyodor_Respond to of 275872
 
Joe: I wonder what this [Low Latency DDR] is about

95% chance this is either a VCDRAM or a ESDRAM variant of DDR SDRAM. My odds would be on ESDRAM.

Just to refresh your memory (or anybody else's ;)): ESDRAM (by Enhanced Memory Systems) uses small SRAM caches arranged as direct-mapped cache, with the cache line size being equal to the DRAM array row size. VCSDRAM (by NEC) has shorter cache line sizes, with an associatively of (I believe) 4.

VCSDRAM is better for multiple data streams or data spread across multiple data banks. ESDRAM is better for single streams of data.

-fyo



To: Joe NYC who wrote (23755)1/2/2001 7:25:40 PM
From: Daniel SchuhRespond to of 275872
 
Joe, I'd guess that the "low latency DDR" thing is the Ramtron / EDDR business, which is based on replacing the row buffers with SRAM cache lines. Or something like that. See the articles I linked in Message 14894702 . A little bit esoteric, it'd be nice if they'd just get DDR somewhere into the general vicinity of SDRAM prices first.

Cheers, Dan.


HomeMailHotSubjectMarksPeopleMarksKeepersSettings
Terms Of UseContact UsCopyright/IP PolicyPrivacy PolicyAbout UsFAQAdvertise on SI
© 2025 Knight Sac Media.  Data provided by Twelve Data, Alpha Vantage, and CityFALCON News