Side-by-Side Comparison
Graphics Cards
GDDR6 vs. PCIe
Comparing 2 standards across 9 specifications. 9 key differences identified.
Comparing:
GDDR6
PCIe
GDDR6, standardized by JEDEC in July 2017 and reaching mass production in early 2018, doubled data rates over GDDR5 to as much as 16-18 Gbit/s per pin -- the current mainstream graphics memory standard for most non-flagship cards.
PCIe is the interface standard graphics cards connect through, typically using all 16 lanes of a slot for maximum bandwidth. Each generation has roughly doubled per-lane throughput since 2003, from PCIe 1.0's 250 MB/s per lane to PCIe 6.0's 7.56 GB/s per lane using a new PAM4 signaling scheme.
Specification Comparison Table
9 Parameters| Parameter / Spec | ||
|---|---|---|
|
JEDEC Standard
|
July 2017 | — |
|
Mass Production
|
January 2018 | — |
|
Max Bandwidth / Data Rate
|
Up to 16 Gbit/s per pin (18 Gbit/s in mass-production variants) | — |
|
PCIe 1.0 (2003)
|
— | 0.25 GB/s/lane | 4 GB/s x16 |
|
PCIe 2.0 (2007)
|
— | 0.5 GB/s/lane | 8 GB/s x16 |
|
PCIe 3.0 (2010)
|
— | 0.985 GB/s/lane | 15.75 GB/s x16 |
|
PCIe 4.0 (2017)
|
— | 1.969 GB/s/lane | 31.51 GB/s x16 |
|
PCIe 5.0 (2019)
|
— | 3.938 GB/s/lane | 63.02 GB/s x16 |
|
PCIe 6.0 (2022 spec)
|
— | 7.563 GB/s/lane | 121 GB/s x16 |