3 ms·

Would be interesting to try newer AMD Phoenix APU, specifically 7840H, 7840HS, 7940H or 7940HS: https://en.wikipedia.org/wiki/Template:AMD_Ryzen_Mobile_7040_ser

Would be interesting to try newer AMD Phoenix APU, specifically 7840H, 7840HS, 7940H or 7940HS: https://en.wikipedia.org/wiki/Template:AMD_Ryzen_Mobile_7040_series https://en.wikipedia.org/wiki/Template:AMD_Ryzen_Mobile_7040... These chips don’t have a socket and were designed for laptops. However, they have up to 54W TDP which is not quite a laptop’s territory. Luckily, there’re mini-PCs on the market with them. The form factor is similar to Intel NUC or Mac Mini. An example is Minisforum UM790 Pro (disclaimer: I have never used one, so far only read a review). The integrated Radeon 780M GPU includes 12 compute units of RDNA3, peak FP32 performance is about 9 TFlops, peak FP16 about 18 TFlops. The CPU supports two channels of DDR5-5600, a properly built computer has 138 GB/second memory bandwidth.

gautamcgoel 3y ago
Using two channels of DDR5-5600, you could achieve at most 90 GB/s of memory bandwidth. It seems to me that you would need DDR5-8400 to hit 138GB/s.
- Const-me 3y ago
  You might be correct, but do you have a source for that? I found that DDR5-5600 = 69.21 GB/second on that web page: https://www.crucial.com/articles/about-memory/everything-about-ddr5-ram https://www.crucial.com/articles/about-memory/everything-abo... I have tried to find an authoritative source but failed, because DDR5 spec on jedec.org is sold for $370 :-(
  - lhl 3y ago
    You can use a calculator: https://www.unitsconverters.com/en/Mt/S-To-Gb/S/Utu-6007-3760 https://www.unitsconverters.com/en/Mt/S-To-Gb/S/Utu-6007-376... - enter in 5600 MT/s and get 44.8 GB/s x 2 channels = 89.6 GB/s I have a 7940HS on my desk now and the Memtest reports the same number.