24GB VRAM Is Now Insufficient | Generated by AI
Answer:
Your friend is right. The GPU VRAM landscape shifted — 24GB is becoming the new 12GB.
The argument for 32/48GB:
| Card | VRAM | ~Price USD | Notes |
|---|---|---|---|
| RTX 4090 | 24GB | ~$1,800 | Consumer king, but 24GB ceiling |
| RTX Pro 5000 Blackwell | 32GB | ~$2,500? | Your friend’s rec |
| RTX 6000 Ada | 48GB | ~$3,500 used | Previous gen pro card |
| RTX Pro 6000 Blackwell | 96GB | ~$8,000+ | Friend’s card |
Why 24GB is already feeling tight:
- Llama 3.3 70B Q4 = ~38GB → doesn’t fit
- Fine-tuning 13B full precision = ~26GB → doesn’t fit
- Qwen 2.5 32B Q4 = ~20GB → fits but no headroom
- Next gen 7B models are getting bigger, not smaller
RTX Pro 5000 Blackwell — worth researching. It’s the new Blackwell workstation line, 32GB, way more future-proof than 4090.
Honest take for you:
Your friend has 96GB and is saying 32/48 minimum — that’s signal. They’re doing real workloads and seeing where 24GB falls short.
But check your actual use case:
- 7B LoRA fine-tuning only → 24GB still fine
- Running 32B+ models locally → need 48GB+
- Multi-model serving / agents → 48GB+
What’s your budget ceiling in CNY? That’s the real constraint.