GDDR

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GDDR

(Graphics Double Data Rate) GDDR is double data rate (DDR) memory specialized for fast rendering on graphics cards (GPUs). Introduced in 2000, GDDR is the primary graphics RAM in use today. GDDR is technically "GDDR SDRAM" and supersedes VRAM and WRAM.

Each GDDR generation is faster and includes enhancements; however, although based on DDR memory, GDDR versions do not correspond numerically to DDR. For example, GDDR3 was based on DDR2 chips; GDDR5 on DDR3 and so on.

GDDR6
As of 2020, GDDR6 is the current version providing a 16 Gbps data rate instead of 13 Gbps for GDDR5X and twice that of GDDR5. GDDR6 also supports the same 32-byte read/write access as GDDR5. See GPU, DDR and SGRAM.
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References in periodicals archive ?
Under this agreement Rambus has granted NVIDIA a patent licence for certain memory controllers at a 1% royalty rate for SDR memory controllers and a 2% royalty rate for other memory controllers, including DDR, DDR2, DDR3, LPDDR, LPDDR2, GDDR2, GDDR3, GDDR4 and portions of GDDR5 memory controllers.
-HP ProBook 4710s – Features a 17.3-inch diagonal HD widescreen display, includes the ATI Mobility Radeon HD 4330, with up to 512 megabytes of GDDR2 for video memory.
The 32 stream processors are paired with 512MB of high-speed GDDR2 or GDDR3 graphics memory, connected via 128-bit wide bus to keep up with the demands of 3D gaming.
The 6830s also features extensive connectivity and additional graphic applications, including ATI Mobility Radeon HD 3410 with 256 MB of GDDR2 for video memory and 3D gaming, as well as ATI HyperMemory, expanding graphics memory with system memory to optimise performance.