AMD MI50 vs RTX 4070 Power Connectors | Generated by AI
Question: AMD MI50 power connector vs RTX 4070 power connector — are they different?
Answer:
Yes, they are different. You are talking about the power connector on the GPU, not a “battery port”.
RTX 4070 (MSI Gaming)
Many RTX 4070 cards use the newer:
- 12VHPWR / 12V-2x6 connector
- Looks like a 12-pin main connector + 4 small sense pins (often called “12 pin”)
- Can provide up to ~600W depending on implementation
-
Requires either:
- native PSU 12VHPWR cable, or
- adapter from 2×/3× 8-pin PCIe power cables
Example:
RTX 4070
GPU socket:
[■■■■■■■■■■■■]
[■■■■]
12VHPWR
AMD MI50
The MI50 is a datacenter GPU from the Vega architecture.
It uses:
- 2 × 8-pin PCIe power connectors
MI50
[8-pin] [8-pin]
PCIe power
Each 8-pin PCIe connector provides up to ~150W, so:
2 × 150W = 300W
+
PCIe slot 75W
≈ 375W available
MI50 TDP is around 300W, so two 8-pin connectors are normal.
Important for your build
Your RTX 4070 PSU cable cannot directly plug into MI50.
You need:
PSU
|
+---- 8-pin PCIe ---- MI50
|
+---- 8-pin PCIe ---- MI50
A normal gaming PSU usually has these cables:
- CPU EPS 8-pin ❌ (not same)
- GPU PCIe 8-pin ✅
- 12VHPWR ✅ (for RTX 40 series)
Make sure you use PCIe VGA cables, not CPU/EPS cables.
Also, MI50 is not like RTX 4070:
| MI50 | RTX 4070 | |
|---|---|---|
| Architecture | Vega 20 | Ada Lovelace |
| VRAM | 16GB HBM2 ECC | 12GB GDDR6X |
| Power | ~300W | ~200W |
| Connector | 2×8-pin PCIe | 12VHPWR / 8-pin variants |
| Gaming driver | poor | excellent |
| AI/Linux | good ROCm card | better CUDA ecosystem |
For your AI workstation idea: the MI50’s 16GB HBM2 + ECC is interesting, but the motherboard/PSU needs to be prepared for the two 8-pin connectors and ~300W power draw. It is much closer to a datacenter accelerator than a gaming GPU.