AMD Navi 2x, Navi 21 & Navi 31 Leak: Apple reveals many specs in the latest macOS 11 beta version

AMD Navi 2x, Navi 21 & Navi 31 Leak: Apple reveals many specs in the latest macOS 11 beta version

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The macOS 11 Big Sur beta latest code contains interesting information on the specs of the AMD Navi 2x graphics chip, which may be introduced as part of the Radeon RX 6000 product family. There is also mention of the Navi 31 GPU, which is already based on the RDNA3 architecture.

Reddit user stblr recently shared a datasheet with some details about AMD Navi 2x and Navi 31. Interestingly, the information comes directly from Apple, or rather from the code for the latest macOS 11 Big Sur beta. There is some interesting information about the number of computing units (CU), as well as clock speeds and power consumption. However, the specs are subject to change prior to launch, and it is also possible that the data refers to “Pro” versions of GPUs that are commonly used in Macs, so regular versions may have higher clock speeds.

GPUs:

PropertyNavi 10Navi 14Navi 12Navi 21 LiteNavi 21Navi 22Navi 23Navi 31
num_se21224224
num_cu_per_sh101210141010810
num_sh_per_se22222222
num_rb_per_se88844444
num_tccs16816201612816
num_gprs10241024102410241024102410241024
num_max_gs_thds3232323232323232
gs_table_depth3232323232323232
gsprim_buff_depth17921792179217921792179217921792
parameter_cache_depth10241024102410241024102410241024
double_offchip_lds_buffer11111111
wave_size3232323232323232
max_waves_per_simd2020202016161616
max_scratch_slots_per_cu3232323232323232
lds_size6464646464646464
num_sc_per_sh11111111
num_packer_per_sc22224444
num_gl2aN/AN/AN/A44224
unknown0N/AN/AN/AN/A1010810
unknown1N/AN/AN/AN/A1612816
unknown2N/AN/AN/AN/A80403280
num_cus (computed)4024405680403280

APUs:

PropertyRenoirCezanneVan GoghRembrandt
num_se1111
num_cu_per_sh8886
num_sh_per_se1112
num_rb_per_se2224
num_tccs4444
num_gprs25625610241024
num_max_gs_thds32323232
gs_table_depth32323232
gsprim_buff_depth1792179217921792
parameter_cache_depth10241024512256
double_offchip_lds_buffer1111
wave_size64643232
max_waves_per_simd10101616
max_scratch_slots_per_cu32323232
lds_size64646464
num_sc_per_shN/A111
num_packer_per_scN/A224
num_gl2aN/AN/A44
unknown0N/AN/A86
unknown1N/AN/A44
unknown2N/AN/A812
num_cus (computed)88812

The flagship Navi 21 GPU, codenamed Sienna Cichlid, comes with 80 CUs. Interestingly, macOS 11 lists two graphics card options, which could be an additional sign that AMD is planning a variant with HBM2 and one with GDDR6 graphics memory. Navi 21A delivers an overclocked 2050MHz at 200W TGP, while Navi 21B reaches 2200MHz at 238W.

Equipped with 40 computing units

In the middle class, the Navi 22 can be found under the code name Navy Flounder. The graphics chip is equipped with 40 computing units, the clock speed is indicated as a maximum of 2500 MHz, the TGP is 170 watts. The specs for the entry-level Navi 23 GPU, codenamed Dimgrey Cavefish, are not yet very detailed, apart from the fact that the GPU is equipped with 32 CUs. Rumor has it that this could be a graphics chip for the upcoming MacBook Pro.

The information about the high-performance GPU Navi 31 RDNA3 is the same as that of the Navi 21. However, this could be placeholder information because even Apple may not have more detailed information about the graphics chip yet, which is only available in more due to the market via year.

Source= RedditTwitter

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