详情
DDR RAM.MEMORY
MODULE, COMPUTER MEMORY
Features:
Capacity: 4GB DDR2 RAM
DDR Memory Type : DDR2
No. of Pins: **0 Pin
Module Type: LONG DIMM
Function: Non ECC Memory
Warranty: 3years
1) DDRII
**3/**7/**0 MHz
2) **8/**4/***-pin socket type dual in line memory module
(DIMM)
3) 1.8V power supply
4) Data rate: **3/**7/**0Mbps (max.)
5) 2.5 V (SSTL*2 compatible) I/O for DDR I products,1.8Vpower
supply for DDR II products
6) Double-data-rate architecture, two data transfers per clock
cycle
7) Bi-directional, differential data strobe (DQS) is
transmitted/received with data, to be used in capturing data at
the receiver
8) Data s and outputs are synchronized with DQS
9) DQS is edge aligned with data for read, center aligned with
data for write
*0) Differential clock s (CK and CK)
*1) DLL aligns DQ and DQS transitions with CK transitions
*2) Commands entered on each positive CK edge: data and data mask
referenced to both edges of DQS
*3) Four internal banks for concurrent operation (component)
*4) Data mask(DM) for write data
*5) Auto precharge option for each burst access
*6) Programmable burst length: 2, 4, 8
*7) Programmable/CAS latency (CL): 3
*8) Programmable output driver strength: normal/weak
*9) Refresh cycles: (***2 refresh cycles/*4ms)
*0) 7.8US maximum average periodic refresh interval
*1) Posted CAS by programmable additive latency for better
command and data bus efficiency
*2) Off-chip-driver impedance adjustment and on-die-termination
for better signal quality
*3) DQS can be disabled for single-ended data strobe
operation
*4) 2 variations of refresh
*5) Auto refresh
*6) Self refresh
Quality
control
1. IC
chipset test
IC chipsets we utilize are only top grade from original brands,
like HY, Samsung, Elpida, etc. When new IC chipsets are received,
we randomly chose samples for test, approximately *0% to *0%
ratio, on professional test software**-RST. Only if the samples
are all without problem, this batch of ICs can be sent to the
next test;
2. SPD information test of the Module
To check whether the SPD information is correct, we use two
professional soft wares, CPU-Z and Sisoft Sandra ***7, to
separately test the module. During this procedure, we subject to
international standard AQL to pick samples.
3. Compatibility test of the Module
Samples which are picked according to AQL standard will be
installed on more than **0 mainstream brands of motherboards,
like Asus, Intel, etc.
4. Stability test
Pick samples according to AQL standard. Only after continuous
work WITHOUTCRASH for *8hours individually at *0 degrees
centigrade and **0degrees centigrade under big software like
3DMARKS, big games, etc, the Module can be sent out of the
factory.
| 国家: |
China |
| 型号: |
DBY4GBDDR2
|
| 离岸价格: |
12 ~ 14 / Piece （面議）
获取最新报价
|
| 位置: |
Shenzhen |
| 最小订单价格: |
12 per Piece |
| 最小订单: |
20 Piece |
| 包装细节: |
retail or bulk packing |
| 交货时间: |
within 3 days |
| 供应能力: |
30000 Piece per Month |
| 付款方式: |
T/T |
| 產品組 : |
Computer Memory Modules
|
