EDN

Implementing custom DDR and DDR2 SDRAM external memory interfaces in FPGAs (part 2)

Note: This is the second part of a two-part article covers the remaining steps to implement DDR or DDR2 external memory interfaces (EMIFs) using FPGAs via ALTDLL and ALTDQ_DQS megafunctions. Steps 4 ” ...
Houston Chronicle

What Is the Difference Between DDR1 & DDR2 RAM?

Double Data Rate is a memory standard that enables RAM chips to transmit output twice in every cycle of the system clock. The DDR standard was superseded in 2003 by DDR2, a memory standard offering ...
Hexus

DDR and DDR2 Explained

In this article we will be exploring the differences between DDR memory and DDR2 memory and also explaining a bit about the technology behind the two. Firstly, DDR stands for Dual Data Rate and is the ...
PC Magazine

DDR vs. DDR2 vs. DDR3: Types Of RAM Explained

Shopping for most kinds of computer hardware is easy. If you pay even basic attention to the industry you're not going to have too much trouble following individual trends and understanding the basic ...
Hexus

DDR / DDR2 memory

When looking to upgrade your PC, RAM is one of the first places to look. More RAM reduces the amount the page file is used, speeding up programs and allowing you to run more applications ...
Design-Reuse

Selection Criteria for Using DDR, GDDR or MobileDDR Memories in System Designs

The variety of memory devices available today provides the system architect with multiple options when selecting a memory. The selection is usually driven by key considerations- power, speed, device ...
ABC News

DDR2 Moves Into the Mainstream

— -- Samsung Electronics, the world's largest memory chip maker, said this week that the global shift to a speedier computer memory chip, DDR2 (double data rate, second generation), is ...
HotHardware

DDR vs. DDR2, Crucial Ballistix, Soltek K8AN2E and More

Good evening friends, NJ stopping in with another dose of HH's special brand of juice. On tap tonight we have a variety of flavours that should suit just about ...
HotHardware

Muskin PC2-4200 DDR2, Muskin PC4400 DDR, & Creative Inspire M80 Monitor

Good morning and happy Friday to you. The hardware news front is a little quiet today, but we pulled together a few items worth the read. Check out two flavors of Mushkin RAM, then wrap it up with a ...
heise online

PC-Hauptspeicher: DDR- und DDR2-Stückzahlen erreichen ungefähr Gleichstand

Speicherchips nach DDR2-Standard erreichen mittlerweile dieselbe Marktbedeutung wie ihre Vorgänger, obwohl im PC-Bereich bisher ausschließlich Chipsätze für Intel-Prozessoren Module mit den neueren ...
EDN

Implementing custom DDR and DDR2 SDRAM external memory interfaces in FPGAs (part 1)

These design guidelines provide the best practices for DDR and DDR2 SDRAM custom memory interface implementation in Stratix III and Stratix IV FPGAs. Figure 1 shows the design flow that is required ...
Design-Reuse

Implementing custom DDR and DDR2 SDRAM external memory interfaces in FPGAs (part 1)

This is a two-part article that focuses on the design guidelines and describes how to implement DDR or DDR2 external memory interfaces (EMIFs) using FPGAs via ALTDLL and ALTDQ_DQS megafunctions. This ...