• 2-Pack A-Data PC2-6400 1GB DIMM Memory Module
• DDR2 800MHz 240pin
• Unbuffered-DIMM Non-ECC
• 2 x 1GB (Total of 2GB)
• Lifetime Manufacturer's Warranty

A-DATA's Number-1 DDR2-800 module is the first one to achieve the 800MHz of DDR2 speed in the world and pass the ATI Radeon Xpress200 QVL, and this amazing module is available now. This module configuration is by 64M x 8 (512Mbit) die, 8 pcs dies in 1 rank. DDR2-800 is officially supported by AMD AM2 and Intel x965 Platforms.

This Vitesta DDR2 module is designed to meet the 800MHz data-rate specification of the JEDEC (Joint Electron Device Engineering Council) standard, but it seems to own the huge potentiality to draw out higher performance in A-DATA laboratories.

By 1.8V low-voltage application, DDR2 modules can reduce about 50% power consumption, which is compared with 2.5V (DDR) power supply on the same operation speed. So it is an environment-friendly product. In order to achieve so amazing high operation speed, A-DATA applies the lower parasitic-loading FBGA (Fine-pitch BGA) package to run in full-speed without

Compared with DDR, DDR2 owns four key technologies pave the way to high-speed operation and low power consumption.

4-bit prefectch
DDR2 archieves the high-speed by four times the transmission amount of data . It also doubles the data rate of DDR. In the 4-bit prefetch architecture, READ or WRITE can achieve the four times the amount of data in a really internal bus clock. This is why the DDR2 can operate in four times faster than the internal operation frequency.

ODT (On Die Termination)
In DDR2, it is composed the termination resistor inside which is applied to match the transmission impedance on the mainboard. It will greatly attenuate the reflected noise resulted from last signals which improves a clear logic-level to avoid the reception of error data.

OCD (Off Chip Driver) Calibration
OCD is the Input/Output driver resistance which applied to adjust the cross-voltage to equalize the pull-up and pull-down signal. It will greatly help to the noise-rejected quality from DDR2 module to chipset in mainboard.

Posted CAS & Additive Latency (AL)
In a posted CAS (Column Address Strobe) operation, a CAS signal (READ/WRITE command) can be input to the next clock after RAS (Row Address Strobe) signal (active command) input. The CAS command is held by the module side and executed after the additive latency (0, 1, 2, 3 and 4). It is easier controller design by avoiding collision on the command bus, and improves the command and data bus efficiency due to simple command order. It also improves the practical memory bandwidth by removing the bubble.

FEATURES

• 240-pin unbuffered DIMM
• Maximum 6.4GB/s bandwidth
• JEDEC standard 1.8 +/- 0.1V power supply
• 64M x 8 component configuration
• CAS Latency: 5
• 4 Bank
• Off-chip driver (OCD) impedance adjustment, and on die termination (ODT)

• Warranty Length: This product comes with a lifetime manufacturer's warranty. (Damaged or defective items, received from shipper, must be emailed to Customer Service within thirty days.)
• Coverage: The warranty covers repair/replacement of defective product only.
• Provider: This warranty is provided by A-Data.
• Contact: If you have a problem that requires warranty service, please contact A-Data's Customer Service at 510-226-7899.
• Technical Support: Should you require technical support on this product, please contact the A-Data Technical Support Team at 510-226-7899.

Payment Methods
We accept American Express, Discover, MasterCard, Optima, Visa, PayPal or a pre-approved purchase order.

Sales Tax
Sales tax is charged on items shipped to California.

Typographical and Listing Errors
At Unity Electronics, we strive to maintain as accurate and specific website as possible through our product listings and descriptions. However, we cannot guarantee that all content, pricing or specifications are always current and complete. In the event that a product is listed at an incorrect price due to typographical information, technical or other error, Unity Electronics reserves the right to refuse or cancel any order for that product.

Defective Products and Missing Parts
Contact the warranty service provider listed above for defective products and missing parts. If, after contacting the warranty service provider, the product has not been repaired to your satisfaction, Unity Electronics will work with you to obtain an appropriate resolution. In this event, please email our Customer Service Team or call 510-475-0400.

Return Policy
You have up to 15 days after the shipping date to initiate your return. Your items must reach us within 30 days from the shipping date. Items received after 30 days will not be accepted for return. We will ship all late items back to you. All returns must be accompanied with an RMA number issued by a Unity Electronics employee. You can obtain an RMA number by calling 510-475-0400 x203 or email our Customer Service Team.

To qualify for a refund, ALL items must be returned in their original condition, including the original packaging, manufacturer's containers, documentation, warranty cards, manuals and all accessories. Do not mark or deface the original manufacturer containers in any manner. We will not accept returns if the packaging is not in its original condition.

Inbound Freight for RMA Returns
All returns must be shipped freight prepaid. All related fees (shipping & return shipping fees) are non-refundable for all products, in all cases.

Restocking Fee
Unity Electronics reserves the right to charge a 10% restocking fee on all items that are returned. This policy is usually enforced on non-defective returned items. However, all accepted returns are subject to this charge.

Refused Shipments
Customers who refuse delivery in place of contacting Unity Electronics to obtain proper return instructions may be assessed a fee to cover return shipping, package refusal fee, and labor charges. This cost will be passed along to the customer in the form of a deduction from the total credit due to the customer. In addition, refused shipments may be considered an unauthorized return and subject to the policies thereof.

When will my order ship?
Our processing hours are Monday through Friday, 8 a.m. to 5 p.m. PST. Orders placed Monday through Friday before 3 p.m. PST will be shipped the same day*. All other orders will be shipped the next business day. Orders are not guaranteed for Saturday or Sunday delivery regardless of shipping method. We do not process or ship any orders on Saturday or Sunday.

*Orders may be delayed due to incorrect address information, different shipping and billing address information, or availability of the product.

Shipping Charge
Unity Electronics refuses to increase your shipping & handling charges. We only charge ACTUAL SHIPPING COSTS as quoted by UPS.

APO/FPO Orders
Orders shipping to APO or FPO addresses are shipped via USPS Priority. Additional shipping fees may apply (a minimum of $10 depending on order size).

P.O. Boxes
We ship to P.O. Boxes via USPS.

International Shipping NEW!
Unity Electronics has gone International! We have partnered with Bongo International Parcel and Mail Forwarding to service international customers. Click on the "Sign Up Now" icon below to get started. For Unity Electronics' "Limitations and International Return Policy", click here.