Compare › RTX 5090 vs RTX 5080
RTX 5090 vs RTX 5080 in Australia
Prices checked 21 Oct 2026, 10:07 am AEST · how we check
Today the cheapest RTX 5090 we found is A$10,999 at Scorptec (in stock) and the RTX 5080 is A$2,323 at Mwave (in stock). The RTX 5080 costs A$8,676 less (79%). For local AI, the RTX 5090 gives models 32 GB at 1,792 GB/s and the RTX 5080 16 GB at 960 GB/s, so the RTX 5090 generates text about 1.6× faster on models both can hold. The RTX 5090 runs 10 models we track that the RTX 5080 can't at 4-bit.
Side by side
Scorptec · in stock
Mwave · in stock
of 32 GB VRAM
of 16 GB VRAM
Which new models each one runs
The newest open models we track that at least one of them can hold, at the usual 4-bit quant with an 8k context. Speeds are bandwidth-based estimates. 6 of the 10 newest models are too big for both.
FAQ
Which is cheaper in Australia, the RTX 5090 or the RTX 5080?
The RTX 5080: A$2,323 at Mwave against A$10,999 for the RTX 5090 (Scorptec), checked 21 Oct 2026, 10:07 am AEST. We re-check both every day.
Is the RTX 5090 faster than the RTX 5080 for local AI?
Yes. On models that fit in both, text generation speed mostly follows memory bandwidth: 1,792 GB/s vs 960 GB/s. Our reference test gives 290 vs 182 tok/s (measured / measured).
Which runs bigger AI models?
The RTX 5090, with 32 GB usable vs 16 GB. Models only it can hold at 4-bit include Hy Memory 30B A3B (MoE), LFM2.5 24B-A2B (MoE), MiniCPM V 4.7 35B A3B (MoE).
Related
Weekly email
Monday mornings: which open models came out, how much memory they need, and which AU prices moved. Unsubscribe any time.
Used for this email only. Privacy