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Quick Answer
The RX 7800 XT and RTX 4070 are neck-and-neck in rasterization at 1440p, with the 7800 XT winning by 2-5% in most titles. The RTX 4070 wins in ray tracing and has DLSS 3 Frame Generation. The 7800 XT costs $130 less and has 16GB VRAM vs 12GB.
The 7800 XT wins rasterization by 3-5% on average.
NVIDIA wins RT performance by 25-30%. With DLSS, the gap widens further.
DLSS 3 Frame Generation is available in 100+ games and produces noticeably better quality than FSR 3. In supported titles, the RTX 4070 effectively outperforms the 7800 XT by 30-50%. However, in non-DLSS titles, the 7800 XT leads.
The 7800 XT's 16GB VRAM is a significant advantage for future-proofing. Several 2026 titles already use 10-12GB at 1440p Ultra. The RTX 4070's 12GB is adequate today but may limit texture quality in 2-3 years.
Our Verdict
The RX 7800 XT wins on value: more VRAM, faster rasterization, and $130 cheaper. The RTX 4070 wins if you prioritize DLSS 3 and ray tracing. Both are excellent 1440p GPUs - pick based on your gaming priorities.
The best 1440p GPU under $800 AUD is the RX 7800 XT at around $620 AUD. It delivers outstanding 1440p performance with 16GB VRAM for future-proofing. The RTX 4070 at $750 AUD is the alternative if you value DLSS 3 and ray tracing.
The best GPU for the Ryzen 5 7600 is the RTX 4070 for 1440p gaming or the RX 7800 XT for best value. This CPU handles any GPU up to the RTX 4080 without bottlenecking at 1440p, so choose based on your budget and resolution.
The RTX 4060 is 10-15% faster than the RX 7600 in rasterization and significantly better in ray tracing. It also has DLSS 3 Frame Generation. However, the RX 7600 costs $50 AUD less. The RTX 4060 is the better GPU; the RX 7600 is the better deal.