Dell 490-BKHG NVIDIA RTX 4000 ADA Generation 20 GB GDDR6 Full Height PCIE 4.0X16 4 DP

Dell 490-BKHG NVIDIA RTX 4000 Ada Generation Professional GPU

The Dell 490-BKHG is a full-height, full-length professional graphics card built around the NVIDIA RTX 4000 Ada Generation GPU. With 20 GB of GDDR6 memory on a 160-bit bus delivering 360 Gbit/s of memory bandwidth, it's sized for compute-intensive workloads — multi-stream video decode, AI inferencing at the edge, visualization, or dense VMS display walls — without stepping up to data-center-class power draw. If you're evaluating professional GPUs in this tier, the 490-BKHG sits in a well-defined position: more memory than the entry Ada workstation cards, PCIe 4.0 bandwidth, and a single-fan active cooler in a form factor that installs in any standard ATX workstation or server chassis with a full-height slot.

Key Features

• 20 GB GDDR6 Frame Buffer: 20 GB of dedicated GDDR6 is the practical threshold for running multiple high-resolution video streams simultaneously in a VMS environment — or holding large AI model weights in GPU memory without constant host-to-device transfers. If your workload today is 16–32 channel 4K decode plus analytics inferencing, this buffer gives you headroom without swapping.
• 360 Gbit/s Memory Bandwidth on a 160-bit Bus: The 160-bit bus at 360 Gbit/s is the constraint that differentiates this card from consumer gaming GPUs with similar core counts — higher sustained throughput means fewer stalls when parallel threads are all pulling texture or frame data at the same time. For mixed decode-plus-render pipelines, that sustained bandwidth matters more than peak clock speed.
• 6144 CUDA Cores (Ada Lovelace Architecture): NVIDIA's Ada generation CUDA cores bring hardware-accelerated AV1 decode alongside H.264/H.265 — relevant if your VMS or streaming platform is moving to AV1 for storage efficiency. The 6144-core count also provides meaningful CUDA parallelism for AI analytics pipelines running alongside display workloads.
• PCIe 4.0 x16 Interface: Full PCIe 4.0 x16 doubles the host-to-GPU bandwidth versus Gen 3 at the same lane count — important when the host CPU is feeding large batches of decoded frames or inference tensors to the GPU. Installs in any PCIe 4.0 or 3.0 x16 slot (backward compatible at reduced bandwidth on Gen 3 hosts).
• 4x DisplayPort 1.4a Outputs: Four DisplayPort 1.4a outputs support up to four independent displays simultaneously — a natural fit for security operations centers running quad-monitor video wall layouts without a separate display controller. DP 1.4a handles 4K@120Hz or 8K@30Hz per port, so there's no output bottleneck for high-refresh monitoring stations.
• VR Ready: The card is rated VR-ready by NVIDIA, relevant for immersive simulation and training environments that share infrastructure with surveillance or access-control workstations.
• Single-Fan Active Cooling, Full-Height Form Factor: The active single-fan cooler keeps thermals managed without requiring a dual-slot blower card, and the full-height/full-length (FH/FL) form factor means standard ATX workstation or tower server chassis — no bracket adapters needed for most rack-mount workstation deployments.
• Ethernet Interface (in addition to PCIe): The listed interface includes both PCIe and Ethernet, consistent with NVIDIA's professional card management and out-of-band features present in the RTX 4000 Ada platform.

Integration and Compatibility

The 490-BKHG installs into any PCIe 4.0 x16 or PCIe 3.0 x16 slot — backward compatibility means it drops into existing workstation refreshes without a motherboard change, though you'll operate at Gen 3 bandwidth on older platforms. The full-height, full-length form factor requires a standard ATX bay; confirm chassis clearance at 14.10 inches card length before ordering for short-depth rack-mount enclosures. At 2.00 lb, it's within normal single-card handling range. For VMS deployments, NVIDIA CUDA-accelerated decode is supported by major video management platforms including Milestone, Genetec, and Avigilon — confirm your specific VMS version's GPU acceleration matrix before deploying. The card's four DP 1.4a outputs integrate directly into multi-monitor display walls without a secondary display controller, simplifying the BOM for operations center builds. For professional GPU comparisons across the Dell workstation line, evaluate slot availability and chassis depth alongside memory capacity — those two constraints eliminate more options than core count does in most security deployments.

Frequently Asked Questions

Q: What is the memory capacity and type on the 490-BKHG?

A: The 490-BKHG carries 20 GB of GDDR6 memory on a 160-bit bus with 360 Gbit/s bandwidth — sufficient for multi-stream 4K decode pipelines and holding AI inference model weights in GPU memory without frequent host transfers.

Q: How many monitors can the 490-BKHG drive simultaneously?

A: The card supports up to four independent displays via four DisplayPort 1.4a outputs. This covers a standard quad-monitor security operations center layout without a secondary display controller.

Q: Will the 490-BKHG fit in a rack-mount workstation?

A: The card is full-height, full-length (FH/FL) and measures 14.10 inches in length. Verify chassis depth and available full-height slot clearance in any rack-mount or short-depth enclosure before purchasing — it requires a standard ATX-depth bay.

Q: Is the 490-BKHG compatible with PCIe 3.0 systems?

A: Yes. PCIe 4.0 x16 cards are backward compatible with PCIe 3.0 x16 slots. You will operate at reduced host-to-GPU bandwidth (PCIe 3.0 rates) on older platforms, which may matter for very high-throughput inferencing pipelines but is generally acceptable for display and moderate decode workloads.

Q: Does the 490-BKHG support CUDA acceleration for VMS analytics?

A: Yes — the card includes 6144 NVIDIA CUDA cores on the Ada Lovelace architecture, which supports CUDA-accelerated decode and AI inferencing. Compatibility with a specific VMS platform's GPU acceleration feature depends on that platform's version and driver support matrix; confirm with your VMS vendor.

Q: What is the weight of the 490-BKHG?

A: The card weighs 2.00 lb. Standard single-slot GPU support brackets are sufficient; no additional chassis reinforcement is required for normal installations.

Marty Allison

When I look at the 490-BKHG for a physical security deployment, the number that stands out first is 360 Gbit/s of memory bandwidth on that 160-bit GDDR6 bus. That's not a marketing figure — it's what determines whether your decode-plus-analytics pipeline stalls waiting on memory or keeps moving. At a 20 GB frame buffer, this card is specced above the typical single-use display card and into territory where you can seriously consider running simultaneous GPU-accelerated decode and lightweight AI inferencing on the same card in a consolidated workstation.

Technical Highlights:

• 20 GB GDDR6 at 360 Gbit/s: Enough buffer to hold multiple concurrent decoded streams and inference model weights without thrashing host memory — meaningful when your VMS is pulling 16+ channels of 4K simultaneously.
• 6144 Ada CUDA Cores: Ada's hardware AV1 decode support adds future-proofing if your storage or streaming stack moves to AV1 — H.265 stays hardware-accelerated as well, so existing pipelines don't require changes.
• 4x DisplayPort 1.4a: Four independent 4K outputs from a single card eliminates the cost and cable management complexity of a separate display controller in an operations center quad-monitor build.

Deployment Considerations:

• At 14.10 inches card length (full-length form factor), measure your chassis depth before ordering — short-depth rack-mount workstations frequently top out at 12 inches of card clearance and will not accept this card physically.
• PCIe 4.0 x16 backward compatibility with Gen 3 slots works, but if you're pairing this with a Gen 3 host for a high-throughput inferencing workload, benchmark your specific pipeline — the halved bandwidth may surface as a bottleneck before the GPU cores do.

This card is a strong fit for a security operations center workstation that consolidates VMS display (four monitors, no separate controller) with GPU-accelerated analytics in a single full-height slot — the 20 GB buffer and Ada CUDA architecture handle that combined workload where a lighter display-only card would not.