TSMC 4N 5nm mighty: 4080 12GB transistors are far more than 3090Ti but half smaller
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TSMC 4N 5nm mighty: 4080 12GB transistors are far more than 3090Ti but half smaller.
The NVIDIA Ada Lovelace RTX 40 series uses a special TSMC 4N process, a customized version of NVIDIA, which actually belongs to the TSMC 5nm process family.
In fact, TSMC 5nm family version is very rich, including standard version N5, performance enhanced version N5P, N4, N4P, N4X, NVIDIA 4N.
Although the naming is very confusing, the TSMC 4N process is still good in terms of specifications, far better than the Samsung N8 8nm of the RTX 30 series.
AnandTech learned the exact area and number of transistors of the first three cores of the RTX 40 series, as follows:
– RTX 4090 AD102 : 608 mm2, 76.3 billion transistors, 125.5 million/mm2
– RTX 4080 16GB AD103 : 378.6 mm2, 45.9 billion transistors, 121.1 million/mm2
– RTX 4080 12GB AD104 : 294.5 mm2, 35.8 billion transistors, 121.1 million/mm2
The three cores integrate more than 120 million transistors per square millimeter, and AD103 and AD104 are exactly the same, far exceeding the 45.1 million TSMC 8nm process RTX 3090/Ti GA102 cores.
Even more amazing is that AD104 as a small core has 7.5 billion more transistors than the GA102 large core, but the area is less than half of the latter, shrinking by as much as 53%!
In addition, the Ada architecture has increased the number of ROP raster units, with three cores of 92, 112, and 80 respectively , which can greatly improve the performance of traditional raster games.
The second- level cache has also been increased to 96MB, 64MB, and 48MB respectively , which is expected to significantly increase the bandwidth.
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