NVIDIA RTX 4090 to Feature 72MB of L2 Cache, RTX 4090 Ti Based on the Fully Enabled AD102 Die May Leverage 96MB [Report]

NVIDIA’s next-gen Lovelace flagship, the RTX 4090 will reportedly feature 72MB of L2 cache. This is a steep cut from the 96MB available on the fully enabled AD102 die. According to Kopite7kimi, the memory subsystem of the upcoming Ada family is still family but “if everything goes well”, then the RTX 4090 will pack 72MB of last-level cache.

GPUGA102AD102RTX 4090AD103RTX 4080RTX 4070 Ti (AD104)RTX 4070
ArchAmpereAda LovelaceAda LovelaceAda Lovelace
ProcessSam 8nm LPPTSMC 5nmTSMC 5nmTSMC 5nm
TP37.6~100 TFLOPs?83 TFLOPs~50 TFLOPs47 TFLOPs?~35 TFLOPs35 TFLOPs?
L2 Cache6MB96MB72MB64MB48MB
Bus Width384-bit384-bit256-bit192-bit
LaunchSep 2020Sept 22?Sept 22?Q1 2023?

From previous rumors, we know that the RTX 4090 will be based on the AD102 die with 16,384 FP32 cores enabled and a bus width of 384-bit. The memory buffer will be once again limited to 24GB with faster GDDR6X 21Gbps memory chips, instead of 19.5Gbps. The RTX 4090 is likely to boast a single-performance rating of 90 TFLOPs. It will have a TGP of 450W, and launch sometime next month.

The RTX 4090 Ti (if it ever releases) should leverage the full-fat AD102 graphics core. we’re looking at roughly 18,000 cores paired with 48GB of GDDR6X memory running at 24Gbps. The L2 cache should also be 96MB wide with a TGP of 600-800W. The RTX 4090 Ti will likely launch sometime in mid-to-late 2023, following the RTX 4080 Ti and the 4070 Ti.

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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