There are four major reasons why DDR4 is set to replace DDR3: it's capable of hitting faster speeds, it's capable of hitting higher densities (16GB DIMMs are expected in 2015), it has improved error correction built into the baseline specification, and it consumes less power for equivalent or better performance than DDR3. In short, while DDR3 is butting up against its limitations today, DDR4 still has a tremendous amount of room to scale.

Yes! We have been working hard with all major motherboard vendors to ensure compatibility with our high speed DDR4 memory, and that includes XMP. DDR4 employs a new specification, XMP 2.0, while DDR3 remains on XMP 1.3.

Very similarly to DDR3, but with some caveats. For starters, Haswell-E tops out at a 2666MHz memory strap, which is very low for what DDR4 can do. Since XMP specifies speeds in excess of 2666MHz, your motherboard BIOS has to compensate somehow. Typically, when XMP tells the motherboard to use a higher memory speed than 2666MHz, the motherboard BIOS will bump the BClk strap from 100MHz to 125MHz. That's normal, but that change will also increase the clock speed of the CPU itself; a well-designed BIOS will compensate and bring the CPU clock speed in line.

While we've been working around the clock with motherboard vendors to maximize compatibility and performance, these technologies are all very new. If you have trouble with stability using either XMP profile, we recommend either manually entering the speed and timings the DDR4 is rated for or running your memory at its default speeds until your motherboard vendor provides a BIOS update to improve stability.

We're launching DDR4 at up to 3000MHz speeds and 8GB per stick densities, but that's just this year alone. DDR4 is expected to hit 16GB densities in 2015, allowing your X99 motherboard to support a staggering 128GB of memory (provided it has eight memory slots). In short, it's gonna get bigger, and it's gonna get faster.

How do I make a warranty claim?

Prior to submitting your warranty claim, we recommend checking the Corsair knowledge base at https://support.corsair.com/ first, where you can find answers to commonly-asked questions. You can also receive troubleshooting assistance by clicking Ask a Question or proceed with product replacement by clicking Request an RMA.

Valid warranty claims should be processed through the retailer where the item was purchased during the first thirty (30) days after purchase. This period may vary depending on where you purchased your product; please verify the return policy with the retailer where you purchased your product. Any warranty claims that cannot be processed through your original point our purchased should be submitted to Corsair at https://support.corsair.com/ 

What are Corsairs replacement options?

Corsair offers the following Warranty fulfillment options:

Standard Replacement:

Through Corsairs Standard Replacement process, Corsair will issue an approved RMA number for the return and replacement of your defective product(s). Our Standard Replacement processing time from receipt of your product(s) to the replacement product(s) shipment is 1-3 business days plus transit time.

Express Replacement:

At Corsair, we understand the need to be up and running at all times! To minimize down time, we offer an Express Replacement RMA process. Through this process Corsair will ship your replacement product(s) prior to receiving your defective product(s). This process requires a valid Credit Card where a holding fee will be applied for the cost of the product until the returning product(s) are received by Corsair. To avoid being fully charged for the Express Replacement product(s), the defective product(s) must be received by Corsair within 10 business days from the date your Express Replacement order is shipped.

Accessory Product Request:

Experiencing a problem with a Corsair Component Product? Many of Corsair products have easy to install replacement accessories which will resolve the issue and prevent the need to return the entire product for replacement.

Where do I ship my items?

Corsair operates multiple RMA receiving locations worldwide. Your RMA confirmation will specify the specific return address you must use when sending your RMA package. This will be your standard return location and should not be changed without prior approval from Corsair. Any packages received at an unauthorized location may be refused and returned to the sender at the senders expense.

Lot codes for Corsair products can generally be found in the follow locations. For more specific information, please view the Corsair knowledge base Lot Code article for a particular product series.

Audio:

     Headset: code is located on the earcup?s arm.

     Speakers: code is located on the back of the subwoofer.

Case: the code is located on the case?s back panel.

Cooling: the code is located on the radiator.

Flash: the code is located on the unit?s packaging, near UPC barcode.

Flash SSD: the code is located on the label on top of the SSD.

HID:

     Mice: the code is located on the label taped next to the USB connector.

     Keyboard: the code is located on the packaging near the UPC barcode.

Memory: the code is on the memory module?s label. PSU: The code is on the PSU?s label, next to the serial number.