GeForce RTX 3080 vs GeForce RTX 5080
On raw speed the GeForce RTX 5080 comes out ahead: far and away the quicker card, about 91% ahead of the GeForce RTX 3080. Best performance and best value in one card here — the clear recommendation if you can afford it.
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GeForce RTX 5080 vs GeForce RTX 3080: In-Depth Breakdown
Performance: GeForce RTX 5080 vs GeForce RTX 3080
The GeForce RTX 5080 is dramatically faster, around 91% ahead of the GeForce RTX 3080. That gap is enough to move it up a tier: the GeForce RTX 5080 is comfortable at 4K and high-refresh 1440p, while the GeForce RTX 3080 is better matched to 1440p. The GeForce RTX 5080 packs 10,752 CUDA cores versus 8,704 on the GeForce RTX 3080.
Price & Value
The GeForce RTX 3080 currently lists from $1,251 AUD, $798 AUD less than the GeForce RTX 5080 at $2,049 AUD. Because it's both faster and competitively priced, the GeForce RTX 5080 wins on performance-per-dollar by about 17%. The GeForce RTX 3080 still sits about $552 AUD above its $699 AUD MSRP. The GeForce RTX 5080 still sits about $1,050 AUD above its $999 AUD MSRP.
Power & Efficiency
On power, the GeForce RTX 3080 is the gentler choice at 320W versus 360W. The GeForce RTX 5080 is more efficient per watt because it's faster, but its higher 360W draw means more heat and a bigger PSU. Its more modern Blackwell architecture on a TSMC 4N process is part of why it does more with each watt.
VRAM & Future-Proofing
VRAM favors the GeForce RTX 5080 at 16GB versus 10GB on the GeForce RTX 3080 — that extra 6GB matters most at 4K, with high-res texture packs, and for content-creation/local-AI work. The GeForce RTX 5080's memory is also faster — 960 GB/s versus 760 GB/s (256-bit vs 320-bit bus) — which helps feed the GPU at 4K and with heavy textures.
Generation & Longevity
The GeForce RTX 5080 is roughly 5 years newer than the GeForce RTX 3080 (Blackwell vs Ampere), so it generally benefits from a more modern architecture and longer driver-support runway.
Which should you buy: GeForce RTX 3080 or GeForce RTX 5080?
The GeForce RTX 5080 is the all-round winner here — it's faster and the better value, so buy it if it fits your budget. Only consider the GeForce RTX 3080 if you find it at a steep discount.
Frequently Asked Questions
Is the GeForce RTX 5080 better than the GeForce RTX 3080?
Which is better for 4K gaming, the GeForce RTX 3080 or the GeForce RTX 5080?
Is the GeForce RTX 5080 worth the extra $798 AUD over the GeForce RTX 3080?
Does the GeForce RTX 5080 have enough VRAM advantage to matter?
Which should you buy: GeForce RTX 3080 or GeForce RTX 5080?
Video Benchmarks & Review
RTX 3080 vs RTX 4080 vs RTX 5080
Video Highlights
Curated gameplay footage and benchmarking review from MxBenchmarkPC on YouTube.
Editorial Review: What the Benchmarks Show
As analyzed by MxBenchmarkPC, the older Ampere-based RTX 3080 (10GB) is benchmarked against the newer Blackwell-based RTX 5080 (16GB). The RTX 5080 delivers a monumental performance leap, nearly doubling average frame rates at 4K resolution and providing massive memory bandwidth advantages.
Technical Specifications Comparison
Architecture & Cores
| Specification | GeForce RTX 3080 | GeForce RTX 5080 |
|---|---|---|
| Architecture | Ampere | Blackwell |
| Process Node | Samsung 8nm | TSMC 4N |
| CUDA Cores (CUDA Cores / CUDA Cores) | 8,704 | 10,752✓ |
| Ray Tracing Cores | 68 | 84✓ |
| Tensor / AI Cores | 272 | 336✓ |
Clock Speeds
| Specification | GeForce RTX 3080 | GeForce RTX 5080 |
|---|---|---|
| Base Clock | 1,440 MHz | 2,295 MHz✓ |
| Boost Clock | 1,710 MHz | 2,617 MHz✓ |
Memory
| Specification | GeForce RTX 3080 | GeForce RTX 5080 |
|---|---|---|
| VRAM Capacity | 10 GB | 16 GB✓ |
| Memory Type | GDDR6X | GDDR7 |
| Memory Bus | 320-bit✓ | 256-bit |
| Memory Speed | 19 Gbps | 30 Gbps✓ |
| Bandwidth | 760 GB/s | 960 GB/s✓ |
Connectivity & Power
| Specification | GeForce RTX 3080 | GeForce RTX 5080 |
|---|---|---|
| Interface | PCIe 4.0 x16 | PCIe 5.0 x16 |
| TDP | 320 W✓ | 360 W |
| Power Connectors | 1x 12-pin | 1x 16-pin |
| Released | Sep 2020 | Jan 2025 |
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