Shuttle AS40GT/R Motherboard Memory Upgrade

Give your Shuttle AS40GT/R a performance boost by increasing its memory. Besides better performance, you will be able to have more programs running at the same time.

Avoid fatal exception errors, stop messages and random reboots by investing in quality memory for your Shuttle AS40GT/R. The computer memory upgrade choices listed here have been tested for quality and compatibility with your Shuttle AS40GT/R motherboard. In addition, you get a limited lifetime warranty and free technical support with your computer memory upgrade.

Shuttle AS40GT/R Motherboard Specs:

• 184-pin DIMM Banking: 3 (3 banks of 1)
• Chipset: SiS 645 (XP4)
• DDR SDRAM Frequencies: PC1600, PC2100, and PC2700
• Error Detection Support: Non-ECC only
• Graphics Support: AGP 8X
• Max Unbuffered DDR SDRAM: 3072MB
• Module Types Supported: Unbuffered only
• Supported DRAM Types: DDR SDRAM only
• USB Support: 1.x Compliant

These 184-pin DIMM modules are compatible with your AS40GT/R:

1GB DDR PC2100, CL=2.5, UNBUFFERED, NON-ECC, DDR266, 2.5V, 128Meg x 64

1GB DDR PC2700, CL=2.5, UNBUFFERED, NON-ECC, DDR333, 2.5V, 128Meg x 64

1GB DDR PC3200, CL=3, UNBUFFERED, NON-ECC, DDR400, 2.6V, 128Meg x 64

512MB DDR PC3200, CL=3, UNBUFFERED, NON-ECC, DDR400, 2.6V, 64Meg x 64

512MB DDR PC2100, CL=2.5, UNBUFFERED, NON-ECC, DDR266, 2.5V, 64Meg x 64

512MB DDR PC2700, CL=2.5, UNBUFFERED, NON-ECC, DDR333, 2.5V, 64Meg x 64

256MB DDR PC3200, CL=3, UNBUFFERED, NON-ECC, DDR400, 2.6V, 32Meg x 64

256MB DDR PC2100, CL=2.5, UNBUFFERED, NON-ECC, DDR266, 2.5V, 32Meg x 64

256MB DDR PC2700, CL=2.5, UNBUFFERED, NON-ECC, DDR333, 2.5V, 32Meg x 64

128MB DDR PC2100, CL=2.5, UNBUFFERED, NON-ECC, DDR266, 2.5V, 16Meg x 64

128MB DDR PC2700, CL=2.5, UNBUFFERED, NON-ECC, DDR333, 2.5V, 16Meg x 64

128MB DDR PC3200, CL=3, UNBUFFERED, NON-ECC, DDR400, 2.6V, 16Meg x 64

Shuttle AS40GT/R Memory FAQ

What is DDR?

DDR stands for Double Data Rate and is an enhanced type of memory which allows data to be read on both the rising and the falling edge of the clock. It basically delivers more data in less time than the previous memory technologies. The Shuttle AS40GT/R uses DDR memory only.

What does PC1600, PC2100, and PC2700 mean?

The number is the throughput speed of the memory in megabytes per second. The speed you need depends on what the installed CPU supports. You can also run faster rated memory for future upgrading or overclocking.

What does the CL number mean?

Column Address Strobe (CAS) Latency, or CL for short, specifies how many clock cycles the Shuttle AS40GT/R motherboard must wait before the memory module is ready to deliver the requested memory. The lower the CL number, the faster the access time.

However, the performance difference between CL=2 and CL=3 is so small that you will not notice any degradation in speed. Unless you are overclocking your Shuttle AS40GT/R, you do not need to worry about the CL rating. If you are overclocking, then going with a lower CL may help stabilize your Shuttle AS40GT/R motherboard.