LightningZ71
Platinum Member
- Mar 10, 2017
- 2,093
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I would imagine that TR may be where AMD dumps their chiplets that only have 4 working cores, or, more specifically, where they can only get 2 cores on a single CCX to work properly, but those don't have any issues with clocking. One of the issues that it APPEARS that we are seeing is the difficulty with extracting the heat from the 7nm chiplets. What if AMD focuses on clock speeds for Threadripper at the cost of maximum core count, and continues the WX line for the devices that instead focus on cores over clocks? Just an example of the idea:
TR 3900x
4 dies, 16 active cores (2 per CCX) Boost to 4.1 Ghz
TR 3920x
6 dies, 24 active cores (2 per CCX) Boost to 4.2 Ghz
TR 3950x
8 dies, 32 active cores (2 per CCX) Boost to 4.3 Ghz
TR 3900WX
4 Dies, 24 active cores (3 per CCX) Boost to 4 Ghz
TR 3920WX
6 Dies, 36 active cores (3 per CCX) Boost to 4 Ghz
TR 3950WX
8 Dies, 48 active cores (3 per CCX) Boost to 4 Ghz
TR 3990WX
8 Dies, 64 active cores (4 per CCX) Boost to 3.6 Ghz
The idea is that the lower active core count chiplets can be better binned for clocking potential, and then pushed harder for clock speed. I believe that my above boost numbers might even be rather conservative, given what we see from the Ryzen 3900. Either way, the resulting TR processors would be a significant performance uplift from the existing models in many regards, and, with the new memory controller proving to be better capable of higher throughputs, I don't see the 4 channel memory as a significant bottleneck for the 48 and 64 core products.
TR 3900x
4 dies, 16 active cores (2 per CCX) Boost to 4.1 Ghz
TR 3920x
6 dies, 24 active cores (2 per CCX) Boost to 4.2 Ghz
TR 3950x
8 dies, 32 active cores (2 per CCX) Boost to 4.3 Ghz
TR 3900WX
4 Dies, 24 active cores (3 per CCX) Boost to 4 Ghz
TR 3920WX
6 Dies, 36 active cores (3 per CCX) Boost to 4 Ghz
TR 3950WX
8 Dies, 48 active cores (3 per CCX) Boost to 4 Ghz
TR 3990WX
8 Dies, 64 active cores (4 per CCX) Boost to 3.6 Ghz
The idea is that the lower active core count chiplets can be better binned for clocking potential, and then pushed harder for clock speed. I believe that my above boost numbers might even be rather conservative, given what we see from the Ryzen 3900. Either way, the resulting TR processors would be a significant performance uplift from the existing models in many regards, and, with the new memory controller proving to be better capable of higher throughputs, I don't see the 4 channel memory as a significant bottleneck for the 48 and 64 core products.