DDR3 Memory Round-Up: Corsair, Kingston, OCZ, Super Talent

Name: DDR3 Memory Round-Up: Corsair, Kingston, OCZ, Super Talent - Page 3
Brand: DDR3

by Marco Chiappetta — Friday, September 14, 2007, 04:30 AM EDT

Kingston KHX11000D3LLK2/2G

Kingston's KHX11000D3LLK2/2G memory kit isn't reated for clock speeds quite as high as Corsair's, OCZ's, or Super Talent's, due to the fact that the DIMMs are built using different memory chips. Whereas Corsair, OCZ, and Super Talent employ Micron chips, the Kingston KHX11000D3LLK2/2G kit and the KHX11000D3ULK2/2G kit we're going to show you on the next page use Elpida chips.

Kingston KHX11000D3LLK2/2G

Specifications and Features

"Kingston's KHX11000D3LLK2/2G is a kit of two 128M x 64-bit 1GB (1024MB) DDR3-1375 CL7 SDRAM (Synchronous DRAM) memory modules, based on sixteen 64M x 8-bit DDR3 FBGA components per module. Each module pair has been tested to run at DDR3-1375MHz at a low latency timing of 7-7-7 at 1.7V. The SPDs are programmed to JEDEC standard latency DDR3-1066Mhz timing of 7-7-7 at 1.5V. Each 240-pin DIMM uses gold contact fingers and requires +1.5V. The JEDEC standard electrical and mechanical specifications are as follows:"

Features:

JEDEC standard 1.5V ± 0.075V Power Supply
VDDQ = 1.5V ± 0.075V
533MHz fCK for 1066Mb/sec/pin
8 independent internal bank
Programmable CAS Latency: 5,6,7,8,9,10
Posted CAS
Programmable Additive Latency: 0, CL - 2, or CL - 1 clock
Programmable CAS Write Latency(CWL) = 7(DDR3-1066)
8-bit pre-fetch
Burst Length: 8 (Interleave without any limit, sequential with starting address “000” only), 4 with tCCD = 4
which does not allow seamless read or write [either on the fly using A12 or MRS]
Bi-directional Differential Data Strobe
Internal(self) calibration : Internal self calibration through ZQ pin (RZQ : 240 ohm ± 1%)
On Die Termination using ODT pin

Features (Cont.)

Average Refresh Period 7.8us at lower then TCASE 85°C, 3.9us at 85°C < TCASE . 95°C
Asynchronous Reset
1066Mbps CL7 doesn’t have backward compatibility with 800Mbps CL5
PCB : Height 1.180” (30.00mm), double sided component

Performance:

CL(IDD) = 7 cycles
Row Cycle Time (tRCmin) = 50.63ns (min.)
Refresh to Active/Refresh Command Time (tRFCmin) = 90ns
Row Active Time (tRASmin) = 37.5ns (min.)
Power TBD W (operating per module)
UL Rating = 94 V - 0
Operating Temperature = 0oC to 85oC
Storage Temperature = -55oC to +100oC

Kingston's KHX11000D3LLK2/2G Memory Kit

Although the company's website shows DDR3 memory with a different heatspreader design, the KHX11000D3LLK2/2G kit we received features the same blue, aluminum heatspreads as the rest of the HyperX product line. We point this out only to avoid confusion when browsing the Kingston website, as the heatspreaders shown here are more than capable of handling the heat produced by these DIMMs. In fact, during testing they didn't get hot enough to cause any concern. As its suggests, this 2GB kit is comprised of a pair of march 1GB DIMMs rated for operation at PC3-11000, or DDR3-1333. Timings of 7-7-7-15 are supported at this clock speed when the DIMMs are supplied with 1.7v.