ASUS
ASUS ROG-STRIX-LC-RTX3090TI-O24G-GAMING graphics card
Liquid-cooled RTX 3090 Ti with 24 GB GDDR6X, 10752 CUDA cores and 21 Gbps memory on a 384-bit bus
- InterfacePCI Express 4.0
- Chipset ManufacturerNVIDIA
- GPU SeriesNVIDIA GeForce RTX 30 Series
- GPUGeForce RTX 3090 Ti
- ArchitectureAmpere
- Boost Clock1980 MHz (OC mode) 1950 MHz (Gaming mode)
- Hybrid liquid cooling covers GPU die and memory for lower temperatures
- 240 mm radiator with 560 mm tubing fits EATX cases and alternative mounts
- 24 GB GDDR6X on a 384-bit bus at 21 Gbps feeds 10752 CUDA cores
- Boost clocks of 1980 MHz OC and 1950 MHz Gaming mode via PCIe 4.0
- Two HDMI 2.1 and three DisplayPort 1.4a drive four displays up to 7680 x 4320
Liquid-cooled RTX 3090 Ti for 4K creators
This ROG STRIX card pairs a factory-overclocked GeForce RTX 3090 Ti GPU with a 240 mm hybrid cooler, delivering 24 GB of GDDR6X memory on a 384-bit bus for 4K gaming and GPU-accelerated workloads. The PCIe 4.0 interface and 10752 CUDA cores provide the throughput needed for high-resolution rendering and AI-assisted content pipelines.
Upgrade from air-cooled 3090 when thermals limit
Moving from a standard air-cooled RTX 3090 or earlier flagship becomes worthwhile when sustained boost clocks throttle under load, as the full-coverage cold plate and 560 mm tubing keep the GPU die and memory at lower temperatures. The 1980 MHz OC boost and 21 Gbps memory speed are maintained more consistently, reducing frame-time variance in long sessions.
Suits 4K enthusiasts with 1000 W PSU and EATX space
Builders running a 1000 W supply with a 16-pin connector and an EATX chassis that fits a 240 mm radiator will gain quiet, high-frequency operation for 7680 x 4320 output across four displays. Compact cases without radiator clearance or systems below the recommended power budget should consider air-cooled alternatives instead.
Highlights
- Hybrid liquid cooling covers GPU die and memory for lower temperatures
- 240 mm radiator with 560 mm tubing fits EATX cases and alternative mounts
- 24 GB GDDR6X on a 384-bit bus at 21 Gbps feeds 10752 CUDA cores
- Boost clocks of 1980 MHz OC and 1950 MHz Gaming mode via PCIe 4.0
- Two HDMI 2.1 and three DisplayPort 1.4a drive four displays up to 7680 x 4320
Specifications
| Brand | ASUS |
|---|---|
| Series | ROG STRIX |
| Model | ROG-STRIX-LC-RTX3090TI-O24G-GAMING |
| Interface | PCI Express 4.0 |
| Chipset Manufacturer | NVIDIA |
| GPU Series | NVIDIA GeForce RTX 30 Series |
| GPU | GeForce RTX 3090 Ti |
| Architecture | Ampere |
| Boost Clock | 1980 MHz (OC mode) 1950 MHz (Gaming mode) |
| CUDA Cores | 10752 |
| Effective Memory Clock | 21 Gbps |
| Memory Size | 24GB |
| Memory Interface | 384-Bit |
| Memory Type | GDDR6X |
| Multi-Monitor Support | 4 |
| HDMI | 2 x HDMI 2.1 |
| DisplayPort | 3 x DisplayPort 1.4a |
| Max Resolution | 7680 x 4320 |
| SLI Support | SLI Ready |
| Cooler | Hybrid Cooler |
| Thermal Design Power | 450W |
| Recommended PSU Wattage | 1000W |
| Power Connector | 1 x 16-Pin |
| HDCP Ready | 2.3 |
| Max GPU Length | 293 mm |
| Card Dimensions (L x H) | Card: 11.54" x 5.24" Radiator: 10.71" x 4.76" |
| Slot Width | 2.6 Slot |
| Shipping weight | 4.35 kg |
| Package size | 476 × 323 × 226 mm |
Questions about this item
Will the 293 mm card and 240 mm radiator fit in my EATX chassis?
The card measures 293 mm long and occupies 2.6 slots. The 240 mm radiator is 10.71 x 4.76 inches, and 560 mm tubing allows flexible placement in EATX cases.
How do I install the hybrid cooler without bending the 560 mm tubing?
Mount the radiator and fans first, then lower the cold-plate onto the GPU die and memory. Route the 560 mm tubes with gentle curves — sharp kinks restrict flow and are the most common error.
When should I plan to replace the liquid-cooling loop on this 450 W card?
A sealed 240 mm loop typically runs 3–5 years before coolant degradation or pump wear. Monitor GPU temperatures under 450 W load; rising deltas signal replacement time.
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