With the arrival of the Intel Santa Rosa platform, memory manufacturers have released new SO-DIMM memory with 400MHz running speed (DDR2-800). In either one or two gigabyte modules, upgrading the memory does improve performance, especially under the VISTA operating system. Since most currently sold laptops come with one gigabyte of memory and usually at DDR2-533 running speed, upgrading to the newest and fastest DDR2-800 SO-DIMM looks a good way to improve overall system response.

- Crucial PC2-6400 (DDR2-800) SO-DIMM

Crucial offers both one and two gigabyte SO-DIMM memory modules for laptop users. We tested the CT2KIT12864AC80E package that comes with 2x1GB setup:

• DIMM Type: UNBUFFERED
• Speed: 400MHz DDR2 (PC2-6400)
• Voltage: 1.8V
• Memory Timings: 5-5-5-15
• Warranty: Lifetime

The Crucial CT2KIT12864AC80E (2x1GB) retails for around US$179.99 and can be bought directly from the Crucial web site.

Our memory modules were wrapped in plastic anti-static bags:

Looking at the memory modules, on one side is a sticker with the Crucial logo, part number, and memory capacity details.

Under Windows and using Everest Ultimate Edition 2007, we can see more information about the memory modules. The memory modules can work up to 400MHz, according to their specs:

The SPD as reported by Everest Ultimate Edition sets the modules for 266MHz and 400MHz:

With both Intel 945 and 965 enabled laptops, the memory modules will run at 332.5MHz (aka 667MHz):