Can I Run IBM Granite 4.2 on NVIDIA GeForce RTX 5070?
Autor: Jakub Rusinowski · Ostatnia aktualizacja: 11 września 2026
Yes, comfortably — Granite 4.2 8B at Q4_K_M needs 6.8 GB at 8K context (4.8 GB weights + 2 GB KV cache/overhead), leaving ~5.2 GB of the NVIDIA GeForce RTX 5070's 12 GB, at ~85 tok/s (est.), with room for up to 32K context.
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NVIDIA GeForce RTX 5070 Specs
| VRAM | 12 GB |
| Memory Bandwidth | 672 GB/s |
Granite 4.2 8B on the NVIDIA GeForce RTX 5070: VRAM by quantization
| Quant | VRAM needed | Fits 12 GB? | Max context | Whole PC |
|---|---|---|---|---|
| F16 | 17.9 GB | ✗ No | — | — |
| Q8_0 | 10.4 GB | ✓ Yes | 16K | — |
| Q6_K | 8.5 GB | ✓ Yes | 32K | — |
| Q5_K_M | 7.6 GB | ✓ Yes | 32K | — |
| Q4_K_M | 6.8 GB | ✓ Yes | 32K | — |
| Q3_K_M | 5.4 GB | ✓ Yes | 32K | — |
| Q2_K | 4.6 GB | ✓ Yes | 32K | — |
Assumes an 8K-token context with an f16 KV cache, on an estimated architecture — this model publishes no config we can read. A longer window needs more; a quantized KV cache needs less. “Max context” is the largest window that still fits in 12 GB. Figures are estimates from parameter count, quantization and memory bandwidth — the analyzer lets you tune KV-cache quant and context.
Context costs VRAM too. At Q4_K_M on the NVIDIA GeForce RTX 5070: 8K 6.8 GB · 32K 10.2 GB · 128K 23.9 GB ✗. Past 128K it no longer fits 12 GB — a q8_0 KV cache buys roughly half of that back, which the calculator will price for you.
No compatible GPU? Granite 4.2 8B on 16 GB of system RAM, CPU only: runs.
IBM Granite 4.2 Sizes That Fit the NVIDIA GeForce RTX 5070 (at 8K context)
| Granite 4.2 8B | Q4_K_M · 6.8 GB at 8K context · ~85 tok/s (est.) |
| Granite 4.2 3B | Q4_K_M · 3.5 GB at 8K context · ~163 tok/s (est.) |
At 2 hrs/day, buying (~$549) beats renting at $0.34/hr after about 2.2 years.
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Cloud rates verified 2026-07 — estimates, and marketplace prices vary. Buying price is GPU MSRP only, not a full PC.
FAQ
Is the NVIDIA GeForce RTX 5070 enough to run IBM Granite 4.2 locally?
Yes, comfortably — Granite 4.2 8B at Q4_K_M needs 6.8 GB at 8K context (4.8 GB weights + 2 GB KV cache/overhead), leaving ~5.2 GB of the NVIDIA GeForce RTX 5070's 12 GB, at ~85 tok/s (est.), with room for up to 32K context.
What's the best IBM Granite 4.2 size for the NVIDIA GeForce RTX 5070?
Granite 4.2 8B at Q4_K_M quantization needs 6.8 GB at 8K context (4.8 GB weights + 2 GB KV cache/overhead), estimated ~85 tokens/sec, up to 32K context.
Every IBM Granite 4.2 size on the NVIDIA GeForce RTX 5070
| Size | VRAM at 8K | Verdict | Speed |
|---|---|---|---|
| Granite 4.2 30B | 20.7 GB | Does not fit | — |
| Granite 4.2 8B | 6.8 GB | Runs | ~85 tok/s |
| Granite 4.2 3B | 3.5 GB | Runs | ~163 tok/s |
IBM Granite 4.2 on Other GPUs
- IBM Granite 4.2 on NVIDIA GeForce RTX 4070 Ti
- IBM Granite 4.2 on NVIDIA GeForce RTX 4070 Super
- IBM Granite 4.2 on NVIDIA GeForce RTX 4070
- IBM Granite 4.2 on NVIDIA GeForce RTX 3060 (12GB)
- IBM Granite 4.2 on Intel Arc B580
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