When it comes to our computers, we'd love to
always have the biggest and the best. However, reality indicates that isn't
always possible. But that also doesn't mean we have to "settle" when it
comes to memory options. For the PC enthusiasts who are looking for quality and
value, Kingston offers the KHX6400D2LLK2/4G Memory Kit, a product in their
HyperX DDR2 line. The HyperX DDR2 offers faster speeds, lower latencies, higher
data bandwidths and lower power consumption than DDR. Kingston has this
specifically to say about the KHX6400D2LLK2/4G:
"Kingston's KHX6400D2LLK2/4G is a kit
of two low-latency 256M x 64-bit 2GB (2048MB) DDR2-800 CL4 SDRAM
(Synchronous DRAM) memory modules, based on sixteen 128M x 8-bit DDR2
FBGA components per module. Total kit capacity is 4GB (4096MB). Each
module pair has been tested to run at DDR2 800MHz at low latency timing
of 4-4-4-12 at 1.95V. The SPD is programmed to JEDEC standard latency
667Mhz timing of 5-5-5-15 at 1.8V. Each 240-pin DIMM uses gold contact
fingers and requires +1.8V."
About the Company:
Kingston Technology Company, Inc. is the world’s independent memory leader.
Founded in 1987 with a single product offering, Kingston® now offers more than
2,000 memory products that support nearly every device that uses memory, from
computers, servers and printers to MP3 players, digital cameras and cell phones.
In 2005, the company's sales exceeded $3.0 billion.
With global headquarters in Fountain Valley, California, Kingston employs almost
2,900 people worldwide. Regarded as one of the “Best Companies to Work for in
America” by Fortune magazine, Kingston’s tenets of respect, loyalty, flexibility
and integrity create an exemplary corporate culture. Kingston believes that
investing in its people is essential, and each employee is a vital part of
Kingston’s success.
Kingston serves an international network of distributors, resellers, retailers
and OEM customers on six continents. The company also provides contract
manufacturing and supply chain management services for semiconductor
manufacturers and system OEMs.
Features and Specifications:
FEATURES:
-
Power supply : Vdd: 1.8V ± 0.1V, Vddq:
1.8V ± 0.1V
-
Double-data-rate architecture; two data
transfers per clock cycle
-
Bidirectional data strobe(DQS)
-
Differential clock inputs (CK and CK)
-
DLL aligns DQ and DQS transition with CK
transition
-
Programmable Read latency 3, 4, 5 (clock)
-
Burst Length: 4, 8 (Interleave/nibble
sequential)
-
Programmable Burst type (sequential &
interleave)
-
Timing Reference: 667MHz 5-5-5-15 at +1.8V
/ 800MHz 4-4-4-12 at +1.95V
-
Edge aligned data output, center aligned
data input
-
Auto & Self refresh, 7.8us refresh
interval (8K/64ms refresh)
-
Serial presence detect with EEPROM
-
High Performance Heat Spreader
-
PCB : Height 1.180” (30.00mm), double
sided component
PERFORMANCE:
-
Clock Cycle Time (tCK) CL=5 3ns (min.) /
8ns (max.)
-
Row Cycle Time (tRC) 54ns (min.)
-
Refresh to Active/Refresh Command Time (tRFC)
127.5ns
-
Row Active Time (tRAS) 39ns (min.) /
70,000ns (max.)
-
Single Power Supply of +1.8V (+/- .1V)
-
Power 2.592 W (operating per module)
-
UL Rating 94 V - 0
-
Operating Temperature 0° C to 55° C
-
Storage Temperature -55° C to +125° C
A Closer Look:

Retail Package |

Memory Information |

KHX6400D2LLK2/4G |
The 2x2GB modules are packed in a
single blister pack, which has pretty much been the standard for
Kingston over the last
few years. The label across the front has the model number of the kits and some
of the specifications, as well as serving as security tape along the edges.

Front View |

Cool blue with mirror finish |

Ribbed Fins |
The heat spreaders on the HyperX modules are some of the nicest on the market.
The blue on the aluminum stands outs, and the silver detailed area along top is not just for
looks - it serves a purpose. The silver area is slightly raised and ribbed, which
creates more surface area for more efficient cooling as well as aiding in gripping the
modules. The heat spreaders are held in place with spring clips, and are secured to the
RAM modules with double sided heat tape.
Speaking of modules... What makes these modules on this 4gb kit so special? Well,
to put it simply, how about double the memory capacity... and I'm not talking about
2GB versus 4GB. The new
Kingston KHX6400D2LLK2/4G kit uses 8 logical
banks as compared to the typical 4 normally used in DDR2 kits to reach the high memory capacities.
This effectively doubles the throughput of the RAM.

Specs |

Close up View |

Hyper X |

Spring Clip |

View of double sided tape |

RAM installed |