AMD Ryzen Threadripper PRO 3945WX vs Apple M3 Ultra (28C60G) Full Specs
12 Cores 24 Threads 4GHz | 28 Cores(20P+8E) 28 Threads(20P+8E) 4.05GHz |
TDP 280W | TDP 300W |
Bandwidth 204.8GB/s DDR4 | Bandwidth 819.2GB/s LPDDR5 |
iGPU 0 | iGPU |
·· - | ·· 21.2 TFLOPSFP16 |
Socket | Socket - |
12 Cores 12P - | 28 Cores 20P 8E |
24 Threads 24P - | 28 Threads 20P 8E |
Base Clock 4GHz | Base Clock 4.05GHz |
Boost Clock 4.3GHz | Boost Clock - |
Overclocking Locked | Overclocking Locked |
L1i 32KB P - | L1i 192KB P 128KB E |
L1d 32KB P - | L1d 128KB P 64KB E |
L2 512KB P - - | L2 64MB P shared 4MB E shared |
L3 64MB | L3 - |
SLC Cache - | SLC Cache 96MB |
Type DDR4 | Type LPDDR5 |
Max Memory 2.05TB | Max Memory 128GB |
ECC Yes | ECC No |
Channels 8 | Channels 8 |
Bus Width 512-bit | Bus Width 1024-bit |
Speed 3200MT/s | Speed 6400MT/s |
Bandwidth 204.8GB/s | Bandwidth 819.2GB/s |
Bandwidth Calculator Channels Transfer Rate Calculated Bandwidth 204.8GB/s | Bandwidth Calculator Channels Transfer Rate Calculated Bandwidth 819.2GB/s |
TDP 280W | TDP 300W |
Peak Power 280W | Peak Power - |
Max Operating Temp 90°C Max | Max Operating Temp 100°C Max |
Bus Type PCIe | Bus Type - |
Bus Config 8 lanes | Bus Config - |
Bus Speed 16GT/s | Bus Speed - |
Bus Bandwidth 16GB/s | Bus Bandwidth - |
PCIe PCIe 4.0 x128252GB/sBandwidth | PCIe PCIe 4.0 x3263GB/sBandwidth |
iGPU 0 | iGPU |
Shaders - | Shaders 7680 |
Boost Clock - | Boost Clock 1.38GHz |
·· - | ·· 21.2 TFLOPSFP16 |
NPU Model - | NPU Model H15 Erebus |
NPU Cores - | NPU Cores 32 |
NPU Clock - | NPU Clock 2.36GHz |
Performance - | Performance 36 TOPSFP16 |
Manufacturer | Manufacturer |
ISA x86-64 | ISA AArch64 |
Architecture | Architecture Apple Silicon 13ARMv8.6-A |
Family | Family |
Branding ![]() | Branding ![]() |
Codename Castle Peak Aspen HighlandsDie Castle Peak 2CCDVariant - - | Codename Palma-D - M3 UltraVariant EverestP-Core Sawtooth E-Core |
Market Segment Workstation | Market Segment Workstation |
Release Date Jul 14, 2020 | Release Date Mar 5, 2025 |
Foundry TSMC | Foundry TSMC |
Other Foundries GlobalFoundriesIO | Other Foundries - |
Fabrication Node N7 12LPIO | Fabrication Node N3B - |
Die Size 148mm² 416mm²IO | Die Size 954mm² - |
Transistor Count 7.6 Billion 8.3 BillionIO | Transistor Count 184 Billion - |
Transistor Density 51 MTr/mm² 20 MTr/mm²IO | Transistor Density 193 MTr/mm² - |
No images available
No images available
Desktops - | Desktops |



