Crucial Ballistix Sport XT Series 4GB 240-Pin UDIMM DDR3 (PC3-12800) Server Memory Module, CL=9, Unbuffered, 1600 MT/S Speed, Non-ECC, 1.5V, 512Meg x 64

Approximately 5.25 in. by 1.18 in. (133.35 mm by 30 mm).

Performance memory for the rest of them
• Designed for entry-level and mainstream users
• Integrated heat spreaders
• Limited lifetime warranty
• Proven stability and reliability
• Crucial: a trusted name in memory

Performance memory for everyone
Serious gamers are serious about Crucial Technology award-winning Ballistix and Ballistix Tracer products. At Crucial, they engineer these products to deliver the fastest, most reliable memory for gaming and performance enthusiasts.

But why should the most hardcore gamers have all of the fun?

If youre new to performance memory and like what Ballistix has to offer, the Crucial Ballistix Sport Series is a great place to start. This line was created for mainstream users and general enthusiasts. They feature heat spreaders for thermal performance -- along with standard timings and voltages, making this reliable, quality module ideal for maximum stability and compatibility.

Easy installation
Unlike traditional Ballistix products, those industry -standard specifications require no special or tricky BIOS configuration. That means this product installs easily, so you can get up and running quickly. And, it's priced affordably-so you can have your fun and stay on budget.

The Ballistix Sport Series memory is available in both DDR2 and DDR3 in the most common and popular speeds and densities, you'll be sure to find a product that suits your needs And because it supports today's latest AMD and Intel platforms (including SandyBridge), Ballistix Sports Series memory works upon installation.

Guaranteed Compatible
Crucial Ballistix Sports Series memory is backed by Crucial Technology outstanding service and support, enjoys a limited lifetime warranty and is guaranteed compatible.

Memory spec terms
If you're not sure if a module is right for your system, use the Crucial Memory Advisor tool for a list of guaranteed compatible modules.

NON-ECC/Non-parity
Most desktop and laptop computers take NON-ECC or Non-parity memory.

ECC/Parity
ECC or parity modules look for errors in data and are most often found in servers and other mission-critical applications used by large networks and businesses.

Unbuffered
Most PCs and workstations use unbuffered memory which is faster than registered memory.

Registered/Buffered
Registered or buffered modules delay all information transferred to the module by one clock cycle. This type of memory is primarily used in servers.

Fully buffered
Designed for next-generation servers, features an advanced memory buffer.

CL
CAS (column address strobe) latency, which is the number of clock cycles it takes before data starts to flow after a command is received. Lower CL is faster. Modules with different CL can be mixed on a system, but the system will only run at the highest (slowest) CL.

Component configuration
(For example: 64Meg x 64) Indicates the size of the memory chip components on the module.

Voltage
For example 2.6V. Indicates the power used by the module. The lower the better.