DDR3 Kingston HyperX Memory

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DDR3 FAQs

Q. What is DDR3?
A. DDR3 is the next generation of Double Data Rate (DDR) Synchronous Dynamic Random Access Memory (SDRAM). It is an evolution of DDR and DDR2 memory technology that delivers higher speeds (at launch up to 1066MHz for ValueRAM® memory, beyond 1333MHz for HyperX® memory), lower power consumption and heat dissipation.
Q. When will DDR3 memory launch?
A. DDR3 memory will launch in May 2007. Kingston® ValueRAM modules will be available in 1066 speeds at launch and continue to 1333 and 1600 over time.
Kingston HyperX modules will begin at 1333 and most likely continue to 2GHz in the future.
Q. What platforms is DDR3 memory supported on?
A. Intel chipset-based desktops in the first half of 2007 and then notebook and server platforms to follow in 2008 and 2009.
Kingston engineers are working closely with Intel to ensure best-compatibility ValueRAM desktop, notebook, workstation and server memory.
Q. Is DDR3 backward compatible with DDR2?
A. No. DDR3 memory chips and modules are very different from DDR2. For example, DDR3 runs at a lower voltage (1.5V) than DDR2 (1.8V).
Q. Can DDR3 DIMMs be plugged into DDR2 sockets or vice versa?
A. No. Memory modules (Unbuffered, Registered, Small Outline DIMMs) have a special “key” or notch in their connector. These keys must align with a key in the memory socket to allow the module to be inserted. All DDR3 and DDR2 module types are keyed differently.








Q. How can you tell the difference between a DDR3 socket and a DDR2 socket?
A. It is difficult to distinguish a DDR3 motherboard from a DDR2 motherboard just by looking at it. Inserting a DDR3 DIMM into a DDR2 motherboard could damage the module, the motherboard, or both. To prevent such damage, the simplest process is to align the memory module and the socket, and visually check that the module “key” aligns perfectly with the socket key. You may have to turn over the memory module as the memory module direction may misalign even compatible socket and module keys.
The picture below illustrates the incorrect alignment of a DDR2 memory module key and a DDR3 socket key:








Q. What are DDR3 memory speeds and naming conventions?
Memory Speed Memory Chip Classification Module Classification Module Bandwidth Module Bandwidth
Dual CH 1066MHz DDR3-1066 PC3-8500 8.5GB/sec. 17.0GB/sec 1333MHz DDR3-1333 PC3-10600 10.6GB/sec. 21.2GB/sec. 1600MHz DDR3-1600 PC3-12800 12.8GB/sec. 25.6GB/sec. Q. Are DDR3 chips different from DDR2?

A.DDR3 memory chips were internally redesigned to support higher speeds and lower power consumption, and dissipate less heat than DDR2.
In addition, while DDR2 memory chips come in up to 2Gb chip sizes, DDR3 memory chips are specified by JEDEC to go up to 4Gb in capacity.
Q. What are the different DDR2 and DDR3 module types?
DDR2 DDR3 Unbuffered DIMMs 240-pin 1.8V 240-pin 1.5V Registered DIMMs 240-pin 1.8V 240-pin 1.5V SO-DIMMs 200-pin 1.8V 204-pin 1.5V Notes: While DDR2 and DDR3 unbuffered and registered DIMMs have the same pin count, they have a different module key to prevent their insertion into incompatible sockets.
Q. What latencies will standard DDR3 DIMMs support?
A. JEDEC DDR3 specifications define standard DDR3 CAS Latencies of 7, 9, and 10:
-1066MHz DDR3: CAS 7 (7-7-7)
-1333MHz DDR3: CAS 9 (9-9-9)
-1600MHz DDR3: CAS 10 (10-10-10)
Q. What is Kingston ValueRAM’s DDR3 module naming convention?


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