Product Details  DDR2 Ram/DDR2 Memory Moudle /DDR2 PC800MHZ 1GB&2GB  DDR2 RAM  Specifications:  1) DDR2 533, 667, 800MHz  2) 184-pin socket type dual in line memory module (DIMM)  3) 2.6V power supply  4) Data rate: 400Mbps (max. )  5) 2.5 V (SSTL-2 compatible) I/O  6) Double data rate architecture, two data transfers per clock  7) Bi-directional, data strobe (DQS) is transmitted/received with data, to be  Used in capturing data at the receiver  8) Data inputs and outputs are synchronized with DQS  9) DQS is edge aligned with data for READs, center aligned with data for WRITEs  10) Differential clock inputs (CK and CK)  11) DLL aligns DQ and DQS transitions with CK transitions  12) Commands entered on each positive CK edge, data referenced to both  Edges of DQS  13) Auto precharge option for each burst access  14) Programmable burst length: 2, 4, 8  15) Programmable/CAS latency (CL): 3  16) Programmable output driver strength: Normal/weak  DDR 533MHz-PC3200 180PIN 256MB 32*8/16*16 /TSOP PC /RETAIL PACKING  DDR 533MHz-PC3200 180PIN 512MB 64*8/32*8/32*16/TSOP /PC RETAIL PACKING  DDR 533MHz-PC3200 180PIN 128MB 16*8 /TSOP  PC RETAIL PACKING  DDR2 667MHz, 16X64/BGA /PC/RETAIL PACKING  Quality control  1. IC chipset test  IC chipsets we utilizes 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 10% to 20% ratio, on profestional test software---RST. Only if the samples are all withouth problem, this batch of ICs can be sent to the next test;  2. SPD infomration test of the Module  To check whether the SPD information is correct, we use two professional softwares, CPU-Z and Sisoft Sandra 2007, to separately test the module. During this procedure, we subject to internationl stardard AQL to pick samples.  3. Compatibility test of the Module  Samples which are picked according to AQL standard will be installed on more than 200 mainstream brands of motherboards, like Asus, Intel, etc.  4. Stability test  Pick samples according to AQL standard. Only after continous work WITHOUT CRASH for 48hours individually at 70 degrees centigrade and -10 degrees centigrade under big software like 3DMARKS, big games, etc, the Module can be sent out of the factory.