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Nvidia GeForce RTX 3090 (Used)

The second-hand market's favourite: 24GB of VRAM around $600, and the basis of most cheap multi-GPU rigs.

Nvidia GeForce RTX 3090 (Used)
Product image / Nvidia

Design score

8.5/10

Scoring method ↗
Evidence statusSpecs not independently verifiednvidia.com
Starting price on record$600
Check price
Boost Clock
1.86 GHz | 1.70 GHz
Memory Size
24 GB | 24 GB
Memory Type
GDDR6X | GDDR6X
Display Support / HDCP
2.3 | 2.3

The decision

Where it wins

  • 24GB of GDDR6X memory for handling large datasets and complex scenes
  • Support for multi-monitor setups with up to four displays
  • High boost clock speeds for enhanced performance

Where it doesn't

  • Requires a high-power supply, 750W or 850W, which can be a limitation for some systems
Ideal forProfessional renderersGaming enthusiastsAI researchers

Key Features

  • ✦24 GB GDDR6X memory
  • ✦Boost Clock: 1.86 GHz | 1.70 GHz
  • ✦Supports up to 4 monitors
  • ✦NVIDIA DLSS
  • ✦NVIDIA Ray Tracing Cores
  • ✦NVIDIA CUDA Cores: 10752 | 10496
02 / Technical record

Specifications

Structured product data, grouped by system.

Core hardware02
GPU Engine Specs / Base Clock (GHz)1.56 | 1.40
Technology Support / NVIDIA ArchitectureAmpere | Ampere
Memory & compute04
Memory Size24 GB | 24 GB
Memory TypeGDDR6X | GDDR6X
Memory Specs / Memory Interface Width384-bit | 384-bit
Memory Specs / Standard Memory Config24 GB GDDR6X | 24 GB GDDR6X
AI & acceleration09
Boost Clock1.86 GHz | 1.70 GHz
Technology Support / NVIDIA DLSSYes | Yes
Technology Support / Tensor Cores3rd Generation | 3rd Generation
GPU Engine Specs / Boost Clock (GHz)1.86 | 1.70
Technology Support / CUDA Capability8.6 | 8.6
Technology Support / Ray Tracing Cores2nd Generation | 2nd Generation
GPU Engine Specs / NVIDIA CUDA ® Cores10752 | 10496
Technology Support / NVIDIA GPU Boost ™Yes | Yes
Technology Support / NVIDIA NVLink ™ (SLI-Ready)Yes | Yes
Display & media07
Display Support / HDCP2.3 | 2.3
Display Support / Multi Monitor4 | 4
Technology Support / NVIDIA Decoder5th Generation | 5th Generation
Technology Support / NVIDIA Encoder7th Generation | 7th Generation
Technology Support / NVIDIA G-SYNC ®Yes | Yes
Display Support / Maximum Digital Resolution7680x4320 | 7680x4320
Display Support / Standard Display ConnectorsHDMI (2), 3x DisplayPort (3) | HDMI (2), 3x DisplayPort (3)
Power & thermal04
Founders Edition Thermal Power Specs / Graphics Card Power (W)450 | 350
Founders Edition Thermal Power Specs / Required System Power (W)850 | 750
Founders Edition Thermal Power Specs / Maximum GPU Temperature (In C)92 | 93
Founders Edition Thermal Power Specs / Supplementary Power Connectors3x PCIe 8-pin cables (adapter in box) OR 450W or greater PCIe Gen 5 cable | 2x PCIe 8-pin (adapter to 1x 12-pin included)
Physical & connectivity04
Technology Support / PCI Express Gen 4Yes | Yes
Founders Edition Card Dimensions / Slot3-Slot | 3-Slot
Founders Edition Card Dimensions / Width5.4" (138 mm) | 5.4" (138 mm)
Founders Edition Card Dimensions / Length12.3" (313 mm) | 12.3" (313 mm)
Platform & software14
Technology Support / VR ReadyYes | Yes
Technology Support / Photo ModeYes | Yes
Technology Support / NVIDIA ReflexYes | Yes
Technology Support / Resizable BARYes | Yes
Technology Support / NVIDIA BroadcastYes | Yes
Technology Support / NVIDIA FreeStyleYes | Yes
Technology Support / NVIDIA OmniverseYes | Yes
Technology Support / NVIDIA HighlightsYes | Yes
Technology Support / NVIDIA ShadowPlayYes | Yes
Technology Support / Game Ready DriversYes | Yes
Technology Support / NVIDIA Studio DriversYes | Yes
Technology Support / Vulkan RT API, OpenGL 4.6Yes | Yes
Technology Support / Microsoft DirectX ® 12 UltimateYes | Yes
Technology Support / NVIDIA ® GeForce Experience ™Yes | Yes
Evidence / qualification

Read the record

Specs not independently verifiednvidia.com
Source on record
nvidia.com
Editorial context

The Nvidia GeForce RTX 3090 is a high-end graphics card designed for demanding tasks such as gaming, professional rendering, and AI workloads. It features 24GB of GDDR6X memory and a robust set of features including support for Ray Tracing, DLSS, and multi-monitor setups. The card's power requirements are significant, needing a 750W or 850W power supply depending on the version, which can be a drawback for systems with limited power headroom. The RTX 3090 is ideal for users who need high performance and large VRAM capacity for complex applications and multi-GPU configurations.

One of the more useful ironies in consumer hardware: a card two generations old is the reigning choice for local AI, purely because VRAM aged better than compute. 24GB for roughly $600 is a price per gigabyte nothing current touches.

Why it defines cheap multi-GPU rigs

These cards pair well. Three of them get you to 72GB for less than a single top-tier card — which is how a large share of home inference rigs are actually built. Mature, well-understood CUDA support means the software just works.

The risks are used-silicon risks

  • No warranty, unknown history. A card that spent two years mining is not the card in the listing photo.
  • Power draw adds up fast across three cards — budget for a serious PSU.
  • Two generations behind on compute and efficiency, so tokens/second per card trails current parts.

Accept that one card will eventually fail, and buy a spare-friendly configuration.

Who should buy

Budget-constrained local AI builds, researchers assembling multi-GPU inference rigs, and anyone whose constraint is VRAM rather than speed. If you want a warranty and low power draw, buy new.

Frequently Asked Questions

Who is Nvidia GeForce RTX 3090 (Used) for?↓
Nvidia GeForce RTX 3090 (Used) is a fit for professional renderers, Gaming enthusiasts and AI researchers.
What are the drawbacks of Nvidia GeForce RTX 3090 (Used)?↓
The trade-offs we record are: Requires a high-power supply, 750W or 850W, which can be a limitation for some systems.
What does Nvidia GeForce RTX 3090 (Used) do well?↓
24GB of GDDR6X memory for handling large datasets and complex scenes, Support for multi-monitor setups with up to four displays and High boost clock speeds for enhanced performance.
How much does Nvidia GeForce RTX 3090 (Used) cost?↓
$600, as recorded in this index. Prices move; check the retailer for the current figure.
What is the Fathom Layer design score for Nvidia GeForce RTX 3090 (Used)?↓
Nvidia GeForce RTX 3090 (Used) scores 8.5 out of 10. The score is assigned by a human against published criteria and placement is never sold — see the methodology page for how it is built.

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