[#小町戯言シリーズ] 6/15~6/23 Tweet Summary.

1.CometLake/IceLake/LakeField Info.


There are three versions of CML-U.
V0 / S0 / K0 exists, but V0 is the same as the current WHL-U.
Also, the difference between S0 and K0 is whether it is a 4 + 2 die or a 6 + 2 die.

*Con
WHL-U = V0 & W0 Stepping (V0 Stepping adds hardware level vulnerability measures to V2/V3/V4/L1TF/MFBDS/MSBDS/MLPDS/MDSUM)
CML-U = K0 (6+2) & V0/S0 (4+2)
CML-H/S = P0 (10+2 or 6+2) & G0 (10+2 or 6+2).
LKF GT1 = 8×8 (64EU / 512SP).

2.AMD Navi 10 RDNA vs AMD Vega 10 GCN.

AMD seems to use "40 CU enabled Navi 10" and "40 CU enabled Vega 10" for power efficiency comparison of RDNA μArch and GCN μArch.

It is used for power efficiency comparison only, and for performance comparison, "Navi 10 (40 CU)" and "Vega 10 (64 CU)" are used.

* (The clock is unknown. Not stated in the end note. Not stated in the E3/Computex documents.)

Note.
Navi 10 = 40CU : 256bit memory Bus : GDDR6 8GB : 251mm2 : TSMC 7nm.
Vega 10 = 64CU : 2048bit memory Bus : HBM2 8GB : 486mm2 (495mm2*) : GF 14nm.
*AMD doesn't specify the Vega 10 die size. They are using 486mm2 and 495mm2.

3.AMD Navi 10 Story.

The MES (Micro Engine Scheduler) is probably an evolution of the "Hardware Scheduler," which is installed on current GCN cards.

The current GCN GPU has two HWSs, but the RDNA-based Navi 10 has one.

(The HWS is installed from the Fiji XT / Fury Series (GFX 803). Officially, it is from the Polaris (GFX 803/804), but as far as I know., First statement is the Hotchips announcement about Fiji.)

Reference
*AMD Vega 10 Block Diagram & AMD Navi 10 Block Diagram.
















Here We can see that Navi 10 and Navi 14 have the same hardware-induced bugs.

As I said before in twitter, the order of appearance of Navi should be Navi 10 → Navi 14 → Navi 12 → Navi 21. It will be a form that can be reconfirmed from here.












The table created based on this tweet is here.

Although I didn't tweet too much, PCI-ID arrangement of Navi 10 LITE is in the part of APU/iGPU. It should not be dGPU.

4.AMD EPYC 7002 Series & AMD Ryzen 3000G Series.
7320P should be 7302P.
I also heard that there is no 12C SKU.

5.AMD Athlon 300GE.

It is basically the same as the current Athlon 200 Series, but the CPU part has been updated to Zen +, and the GPU part has been updated to GFX909.

It is important to note here that it is based on a die called RAVEN2, so unlike 200 series based on RAVEN1, unlocking of PCI-E lanes etc. is not possible.

Also, unlike PICASSO, it is manufactured at 14 nm rather than 12 nm.

6.AMD A320 M/B.

AMD has officially stated that the A320 chipset does not support "Matisse / MTS (Ryzen 3000 Series CPU)", but ASUS and BIOSTAR have issued BIOS that supports MTS.

There should be no technical problems, so I think that depending on the manufacturer, it means to respond.

It is unclear whether other companies will follow.

Reference

GeekBench 4 : Ryzen 5 3600 + ASUS A320M-K/AGESA 0.0.7.2A or Higher.
URL : https://browser.geekbench.com/v4/cpu/13609546























GeekBench 4 : Ryzen 5 3600 + ASUS A320M GAMING/AGESA 0.0.7.2A.
URL : https://browser.geekbench.com/v4/cpu/13609975






















7. AMD Navi 10 PCI-ID.




Con.
7310~731F = Navi 10 ID.
7310 = WorkStation Card (WX Series or Radeon Instinct).
731F = CS Card (RX 5700 Series).
731F:C1 = XT (XTX).
731F:C4 = Pro.

Thank you ;)

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