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Triple-fan graphics card with brushed metal shroud and backplate

MSI

MSI GeForce RTX 3090 Ti SUPRIM X 24G graphics card

SKU CH-507D-C6B1G

High-end graphics card with 24GB GDDR6X memory running at 21000MHz on a 384-bit bus for 7680×4320 output

  • Memory capacity24 GB
  • Interface typePCI Express 4.0 16X
  • Highest resolution7680 × 4320
  • Type of memoryGDDR6X
  • Core frequency21000 MHz
  • Chipset makerNVIDIA
  • 24 GB GDDR6X memory enables 8K workloads
  • 384-bit bus delivers 21000 MHz bandwidth
  • PCI Express 4.0 16X interface maximises throughput
  • 16-pin power connector supports peak draw
  • 7680×4320 max resolution drives multi-monitor setups

MSI GeForce RTX 3090 Ti SUPRIM X 24G

The MSI GeForce RTX 3090 Ti SUPRIM X 24G is a high-end graphics card built for enthusiasts and creators who need maximum GPU memory. It uses the NVIDIA GeForce RTX 3090Ti chipset with 24GB of GDDR6X memory. The card targets 8K workflows and heavy compute tasks.

PCI Express 4.0 16X interface and 384bit memory bus

The card connects through a PCI Express 4.0 16X slot, which sets the practical bandwidth ceiling for host communication. The 384bit memory interface feeds the GPU at 21000MHz, defining the internal throughput limit. System performance will scale with the platform's PCIe 4.0 implementation.

24GB GDDR6X capacity for 7680×4320 output

The 24GB frame buffer comfortably holds large textures, multi-monitor surfaces and 8K video frames at 7680×4320 resolution. Complex scenes with high-resolution assets stay resident in VRAM. Workloads exceeding 24GB will spill to system memory, reducing throughput.

How it compares

Measured against everything we stock in Desktop GPUs & Video Cards, at today’s prices. Recalculated every night.

Price $1,529.99
Pricier than about 90% of the 4,285 comparable items (median $354.99).
Memory capacity 24 GB
Higher than about 91% of the 3,563 comparable items (median 8 GB).
Core frequency 21000 MHz
Higher than about 90% of the 1,624 comparable items (median 1.82 GHz).

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Specifications

Product
Brand nameMSI
Model nameMSI GeForce RTX 3090 Ti SUPRIM X 24G
Memory
Type of memoryGDDR6X
Display
Highest resolution7680 × 4320
Graphics
Memory capacity24 GB
Core frequency21000 MHz
Chipset makerNVIDIA
Memory bus width384bit
Ports & slots
Interface typePCI Express 4.0 16X
Power
Power input connector16pin

Questions about this item

Should I pick the 24GB GDDR6X version or a smaller capacity?

The 24GB GDDR6X frame buffer matches the RTX 3090 Ti reference specification and is the only capacity offered for this SUPRIM X model, so no smaller option exists for this SKU.

What does the 21000MHz memory clock deliver in actual use?

The 21000MHz GDDR6X speed feeds the 384-bit bus to supply over 1 TB/s bandwidth, letting the GPU sustain 4K and 8K workloads without memory bottlenecks.

Does the PCI Express 4.0 16X slot limit performance on a PCIe 3.0 motherboard?

The card runs at PCIe 4.0 x16 but is backward compatible; on a PCIe 3.0 platform the interface halves to 32 GB/s, which still leaves headroom for the RTX 3090 Ti in most gaming and compute tasks.

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