GDDR7 Memory For Next-Gen GPUs Enters Verification Stage As Cadence Intros First Solutions

wccftech.com:

Cadence has announced the introduction of verification solutions for GDDR7 memory which will go on to power next-gen GPUs.

It is important to verify new memory solutions with proper tools prior to their launch into actual retail segments. That's where these verification solutions come in which are shipped to potential customers and clients that are going to utilize next-gen designs in their future products. Cadence has now started providing verification solutions for GDDR7 memory.

The GDDR7 memory solution is going to succeed in GDDR6 and GDDR6X solutions which are yet to hit their peak potential. The new standard will be bringing support for PAM3 Signaling along with a lot faster pin speeds of up to 36 Gbps. Currently, the fastest memory solution is used by NVIDIA's GeForce RTX 40 series graphics cards in the form of the GDDR6X memory solution which provides up to 22 Gbps pin speeds while AMD's Radeon RX 7000 series cards utilize the standard 20 Gbps GDDR6 solution. Just for comparison, a 36 Gbps pin speed solution would deliver the following bandwidth figures:

There's a lot to be squeezed out of the GDDR6 generation yet since Samsung is already working on its GDDR6W design and GDDR7 solutions simultaneously which should double the capacity and performance while Micron is expected to push GDDR6X to even higher speeds in the coming future. The company has been mass-producing 24 Gbps dies but they are yet to be utilized by any consumer-grade GPU.

DRAM uses a single WCK clock for command-address and data latching, while it generates an internal divide-by-4 clock named CK4 that is used as a reference for latencies.

Read clock in GDDR7 can be configured in four different modes from the mode register:

With the help of the last two