Is a Used RTX 3090 Worth $1,450 for Local LLMs? (2026)
The RTX 3090 launched at $1,499 in September 2020. Five years later, a used one averages $1,463 on eBay US. Many guides still say $600-900; that number is a year out of date. This page gives the verdict at today's price for each type of buyer, compares what the same money buys new, and works out how many rental hours the card has to replace.
Bottom Line
A used RTX 3090 costs about $1,450 as of September 2026. That is 97% of its $1,499 launch price from 2020. Whether it is worth that depends on who you are.
| Buyer | Worth ~$1,450? | Why |
|---|---|---|
| You run 27-35B models every day and need CUDA | Yes | 24GB holds Qwen3.6 27B at Q4_K_M (16.8GB) with room for context. Its 936 GB/s is the cheapest bandwidth per dollar we could find. |
| You want a second card for 48GB, or already own one 3090 | Yes | Two used 3090s ($2,926) hold Llama 3.3 70B Q4_K_M (42.5GB). No single new card under $4,000 does. |
| Your models fit in 16GB (8-20B) | No | A new RTX 5060 Ti 16GB costs $789 with a warranty. gpt-oss 20B is 13.8GB and fits. |
| You want the most VRAM per dollar | No | The Radeon AI PRO R9700 has 32GB. At a $1,599 street average it costs $50 per GB, against $61 for the 3090. The 3090 is no longer the VRAM-per-dollar winner. |
| You use local AI a few hours a week | No | RunPod rents a 3090 for $0.22-0.50 per hour. The card needs about 3,350 hours of use to beat the higher rate. |
| You cannot test the card before the return window closes | No | A private-sale 3090 has no warranty. The return window is your only protection. |
If the answer is yes, the next question is which model to buy. Read which used RTX 3090 to buy: every 3090 has the same chip and 24GB, so you pick on memory cooling and slot width.
The short version: the 3090 lost its old title. At $61 per GB it no longer has the cheapest VRAM. It still has the cheapest memory bandwidth of any card we priced, at $1.56 per GB/s. Buy it for speed at 24GB. Do not buy it for capacity per dollar.
The price as of September 2026
| Measure | Price | Source |
|---|---|---|
| Launch MSRP (Founders Edition) | $1,499 | NVIDIA announcement, 24 Sep 2020 (Tom’s Hardware) |
| Used average, eBay US | $1,463 | ResalePrices, 291 listings, 2026-09-24 |
| Used median | $1,450 | Same |
| Fair asking range | $1,398-1,502 | Same |
| 90-day low | $1,244 | Same |
| Change in 30 days | +13.8% | Same |
| August 2026 fair range (our earlier read) | $1,202-1,296 | ResalePrices, 2026-08-11 |
The $600-900 number is stale. Many 2026 guides still quote it. One headline says “Used ~$900”, and others quote $600-800 or $750-850. Those are 2025 prices. The eBay average rose from about $1,248 in August to $1,463 in September. Check a live tracker on the day you buy.
A card that holds 97% of its launch price after five years is not normal. The cause is the 2026 memory shortage. New GPU prices went up, and used 24GB cards followed. The price can also fall. Our read: if new-card prices ease, a card priced near its own launch MSRP has room to drop.
If you buy, buy through a channel with returns. The catalog pick is the EVGA RTX 3090 24GB. Compare the listed price against the $1,398-1,502 fair range before you pay.
What $1,450 buys instead
All prices as of September 2026. Dollars per GB and per GB/s are our arithmetic. Bandwidth comes from vendor spec sheets.
| Option | Price | Memory | Bandwidth | $ per GB | $ per GB/s | Holds Qwen3.6 27B Q4_K_M (16.8GB)? |
|---|---|---|---|---|---|---|
| Used RTX 3090 | $1,463 avg | 24GB GDDR6X | 936 GB/s | $61 | $1.56 | Yes |
| RTX 5060 Ti 16GB (new) | $789 (B&H, 2026-09-24) | 16GB GDDR7 | 448 GB/s | $49 | $1.76 | No |
| 2x RTX 5060 Ti 16GB | $1,578 | 32GB | 448 GB/s each | $49 | n/a | Yes, split across cards |
| Radeon AI PRO R9700 (new) | $1,299 MSRP; street $1,400-1,900 | 32GB GDDR6 | 640 GB/s | $41 at MSRP | $2.03 at MSRP | Yes |
| 2x used RTX 3090 | $2,926 | 48GB | 936 GB/s each | $61 | n/a | Yes, and Llama 3.3 70B Q4_K_M (42.5GB) |
| RTX 5090 (new) | $4,299 floor (2026-09-22) | 32GB GDDR7 | 1,792 GB/s | $134 | $2.40 | Yes |
| RunPod RTX 3090 rental | $0.22-0.50/hr | 24GB | 936 GB/s | n/a | n/a | Yes |
Two things stand out.
- On capacity, the 3090 loses. The R9700 is $50 per GB at its $1,599 street average ($41 at MSRP, when stock appears). The 5060 Ti is $49. The 3090 is $61.
- On bandwidth, the 3090 still wins. Token generation speed follows memory bandwidth. At $1.56 per GB/s, the 3090 beats the 5060 Ti ($1.76), the R9700 ($2.03) and the RTX 5090 ($2.40).
The popular claim is that the used 3090 is “the best VRAM per dollar”. At September 2026 prices that is false. The true claim is narrower: it is the cheapest fast 24GB with CUDA.
The three alternatives, in numbers
RTX 5060 Ti 16GB. It costs about half as much. B&H listed the ASUS Prime 16GB at $789 on 2026-09-24 (gpuprix tracker), 84% over its $429 MSRP. Its 448 GB/s is 48% of the 3090’s 936 GB/s. Expect roughly half the 3090’s generation speed on a model that fits both. That is a bandwidth-ratio estimate, not a measurement. It draws 180W against the 3090’s 350W, and it comes new with a warranty. If 16GB covers your models, the ASUS Dual RTX 5060 Ti 16GB is the cheaper, safer buy.
Radeon AI PRO R9700 32GB. It has 8GB more than the 3090 at a lower MSRP. The catch is stock. Newegg showed the XFX card out of stock on 2026-09-24. One tracker reports street prices of $1,400-1,900 and a $1,599 average. At $1,599 it costs $50 per GB and $2.50 per GB/s, and the 3090 is the better deal on speed. It runs on ROCm, not CUDA. Buy the Radeon AI PRO R9700 32GB only near its $1,299 MSRP. The head-to-head is in R9700 vs RTX 3090.
RTX 5090. It has 1.9x the 3090’s bandwidth and 32GB. It also costs 2.9x as much at the $4,299 floor. See is the RTX 5090 worth it for that verdict.
Rent vs buy
RunPod lists the RTX 3090 at $0.50 per hour on Secure Cloud and $0.22 on Community Cloud (runpod.io/pricing, read 2026-09-24). Owning the card also costs power. NVIDIA rates the 3090 at 350W. At $0.18/kWh (US average, as of August 2026), that is about $0.06 per hour under load.
Our arithmetic, for $1,463:
| Rental rate | Net saving per hour of ownership | Break-even hours | At 4 h/day | At 8 h/day | 24/7 |
|---|---|---|---|---|---|
| $0.50 (Secure) | $0.44 | ~3,350 | 2.3 years | 1.1 years | 4.6 months |
| $0.22 (Community) | $0.16 | ~9,300 | 6.4 years | 3.2 years | 12.8 months |
At the Community rate, a 4-hour-a-day user takes over six years to break even. The card is already five years old. Two things favor buying. A card you own keeps resale value, and today’s resale value is high. Your prompts also never leave your machine. If you cannot name the job that fills 4 hours a day, rent for a month and log your hours first.
The used-card risks
A used 3090 is a five-year-old card with no warranty from the seller.
- Memory heat. The 3090 has VRAM chips on both sides of the board. The backside chips run hot, and memory usually fails before the core does.
- No warranty. EVGA no longer makes graphics cards. Treat every used 3090, from any brand, as a card with no warranty.
- Mining history. Ask the seller. A card that mined at steady temperatures is not an automatic no.
- Power. NVIDIA specifies a 750W system power supply for one 3090. Two cards need more.
Run memtest_vulkan for 15-30 minutes before the return window closes. Any error above zero means return it. The full checklist is in how to buy a used RTX 3090 safely.
What 24GB runs
File sizes from the Hugging Face API, read 2026-09-24.
| Model | Quant | File size | Fits 16GB? | Fits 24GB? |
|---|---|---|---|---|
| gpt-oss 20B | F16 (native MXFP4) | 13.8GB | Yes | Yes |
| Qwen3.6 27B | Q4_K_M | 16.8GB | No | Yes |
| Qwen3.6 35B-A3B | MXFP4_MOE | 21.7GB | No | Yes, with little context room |
| Llama 3.3 70B | Q4_K_M | 42.5GB | No | No (needs two 3090s) |
The 24GB tier is the 27-35B tier. That is the practical reason to pay more than a 16GB card costs. The model picks are in best local LLM for the RTX 3090.
Sources
- ResalePrices: used RTX 3090 eBay US market, read 2026-09-24
- RunPod GPU pricing, read 2026-09-24
- NVIDIA GeForce RTX 3090 specifications (350W, 750W system power, 384-bit)
- PNY GeForce RTX 3090 XLR8 spec sheet (19.5 Gbps, 936 GB/s)
- AMD Radeon AI PRO R9700 specifications (32GB, 640 GB/s)
- NVIDIA GeForce RTX 5060 family specifications (180W, 128-bit) and TechSpot RTX 5060 Ti 16GB specs (448 GB/s)
- TechSpot RTX 5090 review (1,792 GB/s)
- gpuprix: RTX 5060 Ti 16GB US price, read 2026-09-24
- Newegg: XFX Radeon AI PRO R9700 listing, read 2026-09-24
- runaihome: R9700 street price tracking, September 2026
- Tom’s Hardware: MSI RTX 5090 for $4,299 at Walmart, 2026-09-22
- modelfit: RTX 3090 page quoting “Used ~$900”
- Model file sizes from the Hugging Face API: unsloth/gpt-oss-20b-GGUF, unsloth/Qwen3.6-27B-GGUF, unsloth/Qwen3.6-35B-A3B-GGUF, bartowski/Llama-3.3-70B-Instruct-GGUF
See Also
- Which Used RTX 3090 Should You Buy?: same chip on every model, so pick on cooling and slot width
- How to Buy a Used RTX 3090 Without Getting Burned: the test-before-you-pay checklist
- Best Local LLM for the RTX 3090: what to run on 24GB
- R9700 vs RTX 3090 for Local LLMs: 32GB AMD against 24GB CUDA
- Dual RTX 5060 Ti vs RTX 3090: two new 16GB cards against one used 24GB card
- Two Used RTX 3090s or One RTX 5090?: 48GB slow against 32GB fast
- Is the RTX 5090 Worth It?: the 32GB flagship at $4,299
- Can an RTX 3090 Run a 70B Model?: the limit of one card
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