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PC150 SDRAM Roundup

By: TweakTown Staff | DDR Memory in RAM | Posted: Jul 9, 2001 4:00 am
TweakTown Rating: 10.%Manufacturer: Various

Kingmax PC150 Tiny-BGA SDRAM



Kingmax Technology was founded in 1989 and is listed among Taiwan's Top 200 manufacturers (Commonwealth Magazine, May 2000), and is a leading manufacturer of memory modules. Aside from the Taiwan-based manufacturing facilities, Kingmax maintains nine sales offices spread over four continents. The company's American, Chinese, Australian and Dutch workforce consists of over 390 employees, including our good mate Ken from Kingmax Australia.


Through stringent quality control and total commitment to R&D, Kingmax has gained ISO-9001 certification and developed business partnerships with top enterprises and organizations in the IT industry. The company's innovative designs and commitment to excellence enable it to produce cutting-edge, high-performance products within standard-based technologies. Kingmax continues to provide the most outstanding memory modules for mobile computing, combining high quality with affordable prices. A global leader in DRAM memory products, Kingmax announced the world's first memory module with TinyBGA packaging technology in 1997. The award winning TinyBGA package allowed the company's PC-133 DRAM module to triple memory capacity up to 512 MB while maintaining a small form factor. Kingmax has also created 1 GB StackBGA modules for use in high-end servers and workstations, FBGA modules for DDR, and flip-chip BGA/DCA RAMbus RIMM for high speeds of up to 1.6 GB per second. No matter what your IC applications - logic, analogue, mixed signal or memory - you can benefit by choosing Kingmax's BGA, Stacked CSP, and Flip Chip packaging solutions to fit demanding space-restrictions. The Kingmax PC150 is a derivative of its earlier PC133 modules. The new 150Mhz model uses the same style TinyBGA packaging. TinyBGA is a new process of packaging the transistors into the actual memory chip so that the chip itself comes out a lot smaller than normal, this new packaging helps to reduce energy consumption within the PC as the TinyBGA (Tiny Ball Grid Array) requires a lot less power and saving on cost to produce as it uses far less PCB material than any other RAM module to date.



From the picture above we can see the entire DIMM, measuring only 1 inch high this baby can fit into just about any tight spot, good for those motherboards that have the DIMM slots way to close to the HDD bay. Just above, we can see a picture of the TinyBGA chips used on the Kingmax module, these chips are made in a fabrication plant in Taiwan called Kingpack, which do all the actual work on the chips themselves. These fully ready chips are then tested for speed and then sent to Kingmax construction plant where each chip is placed on a PCB and sold off as the memory that you have in your systems today. The one major feature that sets this RAM above the rest is that this memory is true PC150 memory. These chips have been designed to run constantly at 150Mhz and aren't overclocked 133Mhz chips like other companies use.


Kingmax Memory Features


PC150-332 Specification:


- Maximum Rated Operating Frequency = 150MHz


- CAS Latency = 3


- RAS to CAS Delay = 3


- Precharge Delay = 2


- Device Cycle Time = 6.6ns


- On-Board Serial Presence Detect (SPD)


- Low Profile - 1 inch high (2.54cm)


- JEDEC PC-133 SDRAM DIMM Compatible


As many people know, CAS 2 is a faster memory timing and would have been nicer to see the Kingmax memory be CAS2 at PC150Mhz. While it is specified at CAS3 we were able to run it as CAS2 at 133 and 150Mhz on both Intel based and AMD Based systems. This is a major bonus for you overclockers out there, she does indeed do CAS2.


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