Kingmax was founded in 1989 and since then has been providing quality storage solutions and products. Kingmax rose to the ranks of the world's top five memory module producers in 2003, according to iSuppli.com. Kingmax has now split into "Kingmax Semiconductors Division" which produces RAM modules for desktop PCs and Notebooks and "Kingmax Digital Division" which produces Flash memory products. If you need further information about Kingmax, you can always read Mr. Lawrence Chang's interview, Kingmax's VP of Sales & Marketing.

In this review we will put the Kingmax DDR-400 modules to the test. We received 2x512MB memory modules, tested to work in Dual Channel mode.

Kingmax uses their own chipset for these memory modules, promising good performance when operating in Dual Channel mode. These RAMs are part of the SuperRAM series, but they are not the fastest SuperRAM modules Kingmax has to offer. The memory clock is set to 400MHz, but there are also modules clocked at 433MHz available on the market. You can see the full SuperRAM product series here.

The modules use 16 chipsets. Each chipset handles 32MB of memory. For those trying to make out the small printing on the label, the model number is MPXC22D-38KT3R.

- Specifications

Kingmax's chipsets offer double-data-rate architecture (two data transfers per clock cycle), bi-directional data strobe (DQS), differential clock inputs (CK and /CK), auto & self refresh capability, programmable read latency (2, 2.5 clock), programmable burst length (2, 4, 8), programmable burst type (Sequential & Interleave), edge aligned data output and center aligned data input.

Below you can see the table with the full specifications for the Kingmax DDR-400 modules.

Product Name	SuperRAM DDR-400
Part Number	MPXC22D-38KT3R
Package	1024MB kit (2x512MB) (dual rank)
CAS Latency	2-2-2-5 / 2.5-3-3-7
Test Voltage	2.5 V
Speed	DDR 400 MHz (PC3200)
Type	184-pin DDR SDRAM
Error Checking	Non-ECC
Registered/Unbuffered	Unbuffered