Till now, most reports have claimed that the top-end AD102 die powering the RTX 4090 will feature up to 18,432 cores across 84 SMs and 7 GPCs paired with 24GB of GDDR6X memory and 96MB of L2 cache. This monster GPU was expected to have a TGP of 600W+, nearly 2x more than the RTX 3090’s 350W. The latest rumor from Twitter claims that NVIDIA is testing an even more powerful SKU based on the AD102. Although the shader count is unchanged at 18,432, the memory has been doubled to 48GB and the boost clock has been raised by a few hundred MHz. To top it off, the maximum boost power consumption is set to a whopping 900W.
In fact, there is another full-fat AD102 SKU with 900W TGP, 48G 24Gbps GDDR6X, 2*16pin and higher frequency. But no one knows whether it will become an actual product. Because the test board of AD102 has more than two 16pin connectors, so everything is possible.
Now, it’s important to note that this GPU only exists as a test product (or on paper) at the moment, and it’s unclear whether it’ll ever come to the consumer market. If I had to bet, I’d say that NVIDIA is keeping a backup option in place in case the Radeon RX 7900 XT ends up being faster than the RTX 4090 by a large margin. This could become either the RTX 4090 Ti or the next Titan.
GPU
GA102
AD102
RTX 4090
AD103
RTX 4080
RTX 4070 Ti (AD104)
RTX 4070
Arch
Ampere
Ada Lovelace
Ada Lovelace
Ada Lovelace
Process
Sam 8nm LPP
TSMC 5nm
TSMC 5nm
TSMC 5nm
GPC
7
12
11
7
7
5
5
TPC
42
72
64
42
40
30
30
SMs
84
144
128
84
80
60
60
Shaders
10,752
18,432
16,384
10,752
9,728
7,680
7,680
TP
37.6
~100 TFLOPs?
83 TFLOPs
~50 TFLOPs
47 TFLOPs?
~35 TFLOPs
35 TFLOPs?
Memory
24GB GDDR6X
48GB GDDR6X
24GB GDDR6X
16GB GDDR6X
12GB GDDR6X
L2 Cache
6MB
96MB
72MB
64MB
48MB
Bus Width
384-bit
384-bit
256-bit
192-bit
TGP
350W
600W
450W
450W
285-340W
300W
285W
Launch
Sep 2020
Sept 22?
Sept 22?
Q1 2023?
Last but not the least, a 900W TGP seems highly unlikely. If NVIDIA does decide to bring this SKU to the gaming market, the power consumption will have to be optimized. You can expect a peak boost consumption of 700-750W, but not more. The RTX 4090, on the other hand, should have a TGP of 600W, 100W less than the H100, and 250W more than the RTX 3090.
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: areejs12@hardwaretimes.com.
