NVIDIA RTX 4080 to Feature 16GB of GDDR6X Memory, RTX 4070 with 16GB GDDR6 [Report]

A little birdie has told us that NVIDIA’s next-gen GeForce RTX 4080 and 4070 graphics cards will both feature 16GB VRAM buffers. The key difference is that the former will leverage Micron’s PAM4 equipped GDDR6X memory chips, the latter will retain GDDR6, albeit faster 16Gbps modules [guesswork]. The RTX 4080 will be based on the AD102 die, although there is a chance NVIDIA might want to downgrade it to the AD103 core. This would push the RTX 4080 Ti and 4090 a tier above the 4080, rather than just being halo products with horrible performance per dollar.

GPU TU102 GA102 AD102 AD103 AD104
Arch Turing Ampere Ada Lovelace Ada Lovelace Ada Lovelace
Process TSMC 12nm Sam 8nm LPP TSMC 5nm TSMC 5nm TSMC 5nm
GPC 6 7 12 7 5
TPC 36 42 72 42 30
SMs 72 84 144 84 60
Shaders 4,608 10,752 18,432 10,752 7,680
TP 16.1 37.6 ~90 TFLOPs? ~50 TFLOPs ~35 TFLOPs
L2 Cache 6MB 6MB 96MB 64MB 48MB
Bus Width 384-bit 384-bit 384-bit 256-bit 192-bit
TGP 250W 350W 600W? 350W? 250W?
Launch Sep 2018 Sep 2020 Aug-Sep 2022 Q4 2022 Q4 2022

It’s worth noting that prior to Ampere, the RTX/GTX x80 and x70 GPUs were based on the Gx104 die. The x80 Ti and x90/Titan were the sole SKUs to leverage the top-end Gx102 die. With Ampere, NVIDIA used the GA102 die for the RTX 3080, 3080 Ti, 3090, as well as the 3090 Ti, leaving marginal performance deltas between GPUs ranging from $699 to $1,499. The GA104, on the other, was used to feed the RTX 3060 Ti, RTX 3070, and the RTX 3070 Ti.

Regardless, NVIDIA will be equipping its higher-end RTX 4070, and 4080 graphics cards with 16GB of memory via a 384-bit, and 256-bit bus, respectively. This will be backed by 96MB, and 64MB of L2 cache, respectively. The RTX 4090 will likely pack 24GB, and the 4080 Ti will be paired with 20GB of GDDR6X memory. In the mid-range segment, the RTX 4060 should pair the AD104 die with 12GB GDDR6 memory via a 192-bit bus, and the RTX 3050 will likely stick to 8GB. (Viagra Connect)

Areej Syed

Processors, PC gaming, and the past. I have written about computer hardware for over seven years with over 5000 published articles. I started during engineering college and haven't stopped since. On the side, I play RPGs like Baldur's Gate, Dragon Age, Mass Effect, Divinity, and Fallout. Contact:
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