The RTX 5090 is a large step above the 5080 — double the VRAM (32 GB vs 16 GB) and far more bandwidth — but at a much higher price, so the 5080 is the value pick. Buy the 5090 for 4K and big AI models; buy the 5080 for high-end gaming at a saner cost.
Quick answer. Within the RTX 50 family, the gap here is wide. The 5090 doubles the VRAM to 32 GB and roughly doubles bandwidth, making it the choice for the largest AI models and no-compromise 4K. The 5080’s 16 GB and lower price make it the better value for most gamers, and both share DLSS 4.
Quick answer: NVIDIA GeForce RTX 5090 leads on both gaming and AI workloads. NVIDIA GeForce RTX 5080 gives the best performance per dollar of the group. Look at VRAM and memory bandwidth for capability, TDP for power and heat, and separate gaming vs AI performance scores. Then weigh new and used prices, and cloud rental cost if you only need the card occasionally. Not necessarily. TDP measures power draw, not performance. A newer architecture can deliver more frames or tokens per watt, so always compare performance scores alongside power, not power alone. Used cards can offer far better value, especially previous-generation flagships. Factor in the lack of warranty and unknown wear. This tool lists both new and used reference prices so you can judge the gap. Head-to-head comparison
Spec
NVIDIA GeForce RTX 5090
NVIDIA GeForce RTX 5080
VRAM
32 GB (winner)
16 GB
Bandwidth
1792 GB/s (winner)
960 GB/s
TDP (power)
575 W
360 W (winner)
Gaming score
100/100 (winner)
88/100
AI score
100/100 (winner)
82/100
Price (new)
$2,500
$1,200 (winner)
Price (used)
$2,200
$1,050 (winner)
Cloud rent $/hr
$0.69
$0.40 (winner)
Best for
Gaming, AI / LLMs
Best value, Efficiency
Get it
GPU reference specs
GPU
VRAM
TDP
Bandwidth
Street price
Cloud $/hr
Released
NVIDIA GeForce RTX 5090
32 GB
575 W
1792 GB/s
$2,500
$0.69
2025
NVIDIA GeForce RTX 5080
16 GB
360 W
960 GB/s
$1,200
$0.40
2025
NVIDIA GeForce RTX 5070
12 GB
250 W
672 GB/s
$650
$0.25
2025
NVIDIA GeForce RTX 4090
24 GB
450 W
1008 GB/s
$1,900
$0.34
2022
NVIDIA GeForce RTX 4080
16 GB
320 W
717 GB/s
$1,100
$0.28
2022
NVIDIA GeForce RTX 4070
12 GB
200 W
504 GB/s
$550
$0.20
2023
NVIDIA GeForce RTX 3090
24 GB
350 W
936 GB/s
$900
$0.22
2020
NVIDIA GeForce RTX 3060 12GB
12 GB
170 W
360 GB/s
$280
$0.12
2021
NVIDIA A100 80GB
80 GB
400 W
2039 GB/s
$8,000
$1.10
2020
NVIDIA H100 80GB
80 GB
700 W
3350 GB/s
$25,000
$2.49
2022
AMD Radeon RX 7900 XTX
24 GB
355 W
960 GB/s
$850
$0.30
2022
Intel Arc B580
12 GB
190 W
456 GB/s
$250
N/A
2024
Frequently asked questions
How do I compare two GPUs?
Is a higher TDP GPU always faster?
Should I buy new or used when comparing GPUs?
Which should you buy?
- 4K / max gaming: the 5090 has clear headroom; the 5080 is still a top-tier 1440p/4K card.
- AI: 32 GB vs 16 GB is decisive for larger models — choose the 5090 if VRAM is your limit.
- Value: the 5080 wins comfortably per dollar and per watt.
Key differences
- VRAM: 32 GB vs 16 GB — the defining difference.
- Bandwidth & performance: the 5090 leads by a wide margin.
- Power & price: the 5080 is much cheaper and far less power-hungry.
- Features: both support DLSS 4.
New, used, or cloud
If you need 32 GB only for occasional AI jobs, renting a 5090 beats buying one — see cloud rates. For gaming, the 5080 is the sensible spend.
People also ask
Is the RTX 5090 twice as fast as the 5080? Not twice as fast, but it leads on every metric with double the VRAM and much higher bandwidth. The gaming gap is smaller than the spec gap; the AI gap can be large for big models. Is the 5080 enough for 4K? Yes for most titles, especially with DLSS 4. The 5090 is for maxed-out 4K, high refresh, and VRAM-hungry AI.
Related: RTX 5090 vs RTX 4090 · RTX 5080 vs RTX 4080 · All GPU comparisons