GPUsNews

NVIDIA RTX 4080 to Feature 16GB of 23Gbps GDDR6X VRAM Alongside a TBP of 340W, 20W Higher than RTX 3080 [Rumor]

Additional details regarding NVIDIA’s next-gen RTX 4080 graphics card have surfaced. From what I can tell, the core specifications are now more or less set in stone. Based on the AD103-300-A1 GPU core, we’re looking at 9,728 FP32 cores (ALUs) spread across 76 SMs, paired with the PG136/139-SKU360 board. This is a step up from the 8,704 shaders on the RTX 3080 and core clocks going from 1.7GHz to nearly 3GHz.

The memory bus has been trimmed, going from 320-bit on Ampere to 256-bit on the Lovelace RTX x080. The GDDR6X memory is substantially faster, running at a remarkable 23Gbps for an overall bandwidth of 736GB/s, a smidge less than the RTX 3080’s 760GB/s.

GPUGA102AD102RTX 4090AD103RTX 4080AD104RTX 4070
ArchAmpereAda LovelaceAda LovelaceAda Lovelace
ProcessSam 8nm LPPTSMC 5nmTSMC 5nmTSMC 5nm
GPC712117755
TPC42726442403030
SMs8414412884806060
Shaders10,75218,43216,38410,7529,7287,6807,680
TP37.6~100 TFLOPs?83 TFLOPs~50 TFLOPs47 TFLOPs?~35 TFLOPs35 TFLOPs?
Memory24GB GDDR6X48GB GDDR6X24GB GDDR6X16GB GDDR6X
12GB GDDR6X
L2 Cache6MB96MB72MB64MB48MB
Bus Width384-bit384-bit256-bit160/192-bit
TGP350W600W450W450W285-340W300W285W
LaunchSep 2020Sept 22?Sept 22?Q1 2023?

Then there’s the L2 cache. We’re most likely still looking at 48MB of LLC, a massive upgrade from the 5MB found on the RTX 3080. Finally, there’s the matter of the Total Board Bower (TBP). NVIDIA has further optimized the power consumption of the RTX 4080, bringing it down to just 340W. That’s just 20W more than the RTX 3080, a massive improvement over the initially rumored 400-450W target.

It’s unclear whether NVIDIA will launch the RTX 4080 later this year or postpone it to early 2023. Rumors claim that the RTX 4090 will land sometime next month but the remaining Lovelace SKUs might get pushed to next year.

Areej

Computer hardware enthusiast, PC gamer, and almost an engineer. Former co-founder of Techquila (2017-2019), a fairly successful tech outlet. Been working on Hardware Times since 2019, an outlet dedicated to computer hardware and its applications.
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