Can the AMD Radeon RX 7800 XT run Llama 3.1 70B?

Radeon RX 7800 XT × Llama 3.1 70B8K context
NoDoes not fit in memory
Memory at Q4_K_M46.1 GB of 16 GB
Weights 42.8 GBKV cache 2.7 GBRuntime 0.6 GB
  1. FP16
  2. Q8_0
  3. Q6_K
  4. Q5_K_M
  5. Q4_K_M
  6. Q3_K_M
  7. Q2_K

No. Even at Q4_K_M, Llama 3.1 70B needs about 46.1 GB, but the AMD Radeon RX 7800 XT has 16 GB usable. You could offload some layers to system RAM, but it will be very slow.

Run it on a rented GPU

On a cloud GPU with enough memory, the same command you'd use locally works:

ollama run llama3.1:70b

At Q4_K_M it needs about 46.1 GB, so pick a GPU with at least 48 GB.

Run it in the cloud

Too big for the AMD Radeon RX 7800 XT? Run Llama 3.1 70B on a rented GPU instead.

Rent a cloud GPU by the hour. No upfront cost, stop any time.

Memory needed by quantization

At 8,192 tokens of context. The black line marks the 16 GB the AMD Radeon RX 7800 XT can use.

QuantQualityMemoryFits?Speed
FP16Full quality144.5 GBToo big—
Q8_0Near-lossless78.3 GBToo big—
Q6_KExcellent61.2 GBToo big—
Q5_K_MVery good53.5 GBToo big—
Q4_K_MGood, most popular46.1 GBToo big—
Q3_K_MNoticeably degraded37.8 GBToo big—
Q2_KHeavily degraded29.8 GBToo big—

Frequently asked questions

Can AMD Radeon RX 7800 XT run Llama 3.1 70B?

No. Even at Q4_K_M, Llama 3.1 70B needs about 46.1 GB, but the AMD Radeon RX 7800 XT has 16 GB usable. You could offload some layers to system RAM, but it will be very slow.

How much VRAM does Llama 3.1 70B need?

About 46.1 GB at Q4_K_M with 8,192 tokens of context, and about 144.5 GB at full FP16 precision.

How fast is Llama 3.1 70B on the AMD Radeon RX 7800 XT?

It does not fit in the AMD Radeon RX 7800 XT's memory, so most layers would run from system RAM and generation would be very slow.