Modified

GeForce RTX 4090 48GB (Modified)

Modified / High-VRAM · Ada Lovelace

Used and refurbished GPU marketplace · wholesale lots from 10 cards. Compare technical variants, then choose a local market to check seller availability.

Modification evidence ↗
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UNOFFICIAL HARDWARE MODIFICATION

24 GB → 48 GB VRAM

Not an NVIDIA-supported configuration. Board-level rework can void the warranty and introduce firmware, driver, thermal, memory-error and long-term reliability risks. Seller validation and stress-test evidence are essential.

Based on
GeForce RTX 4090
Market status
Commercially offered
Common use
High-throughput local AI inference, fine-tuning and rendering.
Typical method
Transplant the GPU to a custom two-sided memory PCB, populate 48GB GDDR6X and flash compatible firmware.

Technical variants

1 configurations

GeForce RTX 4090 48GB (Modified)

Base GPU · 2022-09-20
GPU chip
AD102
CUDA cores
16,384
Tensor / RT
512 / 128
VRAM
48.00 GB GDDR6X
Memory bus
384-bit
Bandwidth
1010.00 GB/s
Clock
2235 MHz / 2520 MHz
Power
450 W
Interface
PCIe 4.0 x16
FP32
82.580 TFLOPS
Specification source ↗

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Understand the condition and history of a GPU lot

Used graphics cards

Previously owned GPUs, including cards removed from workstations and servers. Prior use alone does not mean a card has been refurbished or tested.

Refurbished GPUs

Ask what was inspected, serviced or repaired and request test results. Refurbished does not automatically mean manufacturer-certified or covered by a warranty.

Modified / high-VRAM GPUs

Aftermarket memory upgrades and other hardware modifications are separate from refurbishment. Confirm the actual VRAM, firmware and compatibility.

Ex-corporate hardware, off-lease & liquidation lots

Possible sources include IT asset disposal (ITAD), data-center decommissioning, lease returns and business liquidation sales. Government or police-seized asset auction lots need documents proving lawful ownership and resale rights. These are source categories, not claims of available stock.

Before buying in bulk

Ask about mining history, repairs, quantities, serial numbers, tests and return terms. Ex-mining GPUs and faulty cards sold for parts or repair must be identified clearly; provenance is not a condition grade.