llamaperf

AMD RX 6650 XT vs AMD RX 7600 8GB for local LLMs

0 reports on the AMD RX 6650 XT and 1 on the AMD RX 7600 8GB

Which is faster for local LLMs?

Nobody has reported the same model at the same quant on both cards yet, so there's no measured head-to-head. Memory bandwidth, which caps how fast a card can write, is about the same on both (280 GB/s on the AMD RX 6650 XT, 288 on the AMD RX 7600 8GB). The estimates below compare them on the models people run most.

AMD RX 6650 XT
Memory
8GB
Memory bandwidth
280 GB/s
FP16 compute
21.6 TFLOPS
Reports
0
AMD RX 7600 8GB
Memory
8GB
Memory bandwidth
288 GB/s
FP16 compute
43 TFLOPS
Reports
1

Estimated by the calculator

The quant the calculator recommends for each card and its estimated speed at a 32,768-token context with 32 GB of system RAM, from memory bandwidth and the model's shape.

ModelAMD RX 6650 XTAMD RX 7600 8GB
Qwen3.8 27B1.6 t/sQ6_K, layers on CPU1.6 t/sQ6_K, layers on CPU
Qwen3.8 125B · 6B activedoesn't fit at these settingsdoesn't fit at these settings
Qwen3.6 35B · 3B active14.6 t/sQ5_K_M, experts in RAM14.7 t/sQ5_K_M, experts in RAM
DeepSeek V4 Flash 284B · 13B activedoesn't fit at these settingsdoesn't fit at these settings
Qwen3.6 27B1.6 t/sQ6_K, layers on CPU1.6 t/sQ6_K, layers on CPU
Gemma 4 26B · 4B active9.3 t/sQ6_K, experts in RAM9.4 t/sQ6_K, experts in RAM

Change the context, RAM or model in the calculator: AMD RX 6650 XT · AMD RX 7600 8GB

Every report on each card, with its source: AMD RX 6650 XT · AMD RX 7600 8GB

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