NVIDIA RTX PRO 4500 Blackwell Server vs Lisuan Tech LX ULTRA Comparison

FAQ

Q: What architecture does each GPU use?

A: The NVIDIA RTX PRO 4500 Blackwell Server uses the Blackwell 2.0 architecture on a 5 nm process with the GB203 chip. The Lisuan Tech LX ULTRA uses the TrueGPU architecture on a 6 nm process with the 7G105 chip.

Q: How do the memory subsystems compare?

A: The RTX PRO 4500 has 32 GB of GDDR7 memory on a 256-bit bus, delivering 800.3 GB/s of bandwidth. The LX ULTRA has 24 GB of GDDR6 memory on a 192-bit bus, delivering 432.0 GB/s of bandwidth.

Q: Which GPU has higher FP32 compute throughput?

A: The RTX PRO 4500 delivers 50.70 TFLOPS of FP32 performance. The LX ULTRA delivers 24.58 TFLOPS, which is approximately half the FP32 throughput of the NVIDIA card.

Q: What are the power requirements for each card?

A: The RTX PRO 4500 has a TDP of 165 W and a suggested PSU of 450 W. The LX ULTRA has a TDP of 225 W and a suggested PSU of 550 W.

Q: Do both cards support the same API versions?

A: Both support DirectX 12 Ultimate (12_2) and OpenGL 4.6. The RTX PRO 4500 supports Vulkan 1.4, while the LX ULTRA supports Vulkan 1.3.

Q: What are the physical dimensions and slot requirements?

A: The RTX PRO 4500 is a single-slot card measuring 267 mm in length, 111 mm in height, and 40 mm in width. The LX ULTRA is a dual-slot card measuring 268 mm in length, 112 mm in height, and 40 mm in width.

Architecture Differences

The NVIDIA RTX PRO 4500 Blackwell Server and the Lisuan Tech LX ULTRA represent fundamentally different design approaches. The RTX PRO 4500 is built on the Blackwell 2.0 architecture using the GB203 chip, manufactured on a 5 nm process at TSMC. The LX ULTRA uses the TrueGPU architecture with the 7G105 chip, fabricated on a 6 nm process, also at TSMC. The process node difference gives NVIDIA a manufacturing advantage in transistor density.

The RTX PRO 4500 packs 45,600 million transistors into a 378 mm² die, resulting in a transistor density of 120.6 million transistors per square millimeter. The LX ULTRA's transistor count and die size are not recorded in the database, so a direct density comparison is not possible. However, the 5 nm process typically allows for higher integration compared to 6 nm.

Compute resources differ substantially. The RTX PRO 4500 contains 10,496 shading units, 328 texture mapping units, and 112 raster output units. It also includes 82 dedicated ray tracing cores and 328 tensor cores. The LX ULTRA has 6,144 shading units, 192 TMUs, and 96 ROPs, but no dedicated ray tracing or tensor core counts are recorded. This suggests the LX ULTRA relies on general-purpose compute for any ray tracing or AI workloads.

The RTX PRO 4500 uses GDDR7 memory, the latest generation, while the LX ULTRA uses GDDR6. The memory clock for the RTX PRO 4500 is 1563 MHz, translating to 25 Gbps effective data rate. The LX ULTRA runs its memory at 2250 MHz, or 18 Gbps effective. The RTX PRO 4500's 256-bit memory bus is wider than the LX ULTRA's 192-bit bus, contributing to its significantly higher bandwidth.

The two cards also differ in their interface and output configuration. The RTX PRO 4500 uses PCIe 5.0 x16 and has no display outputs, indicating a server-oriented design. The LX ULTRA uses PCIe 4.0 x16 and provides four DisplayPort 1.4a outputs, making it suitable for workstation display tasks. The RTX PRO 4500 is single-slot, while the LX ULTRA requires dual-slot spacing.

Head-to-Head Benchmarks

The database currently contains no recorded benchmark scores for either GPU. Both cards show an average benchmark score of zero and zero wins in head-to-head comparisons. However, the recorded specifications allow for a theoretical performance analysis based on the hardware parameters.

The FP32 compute throughput is the clearest differentiator. The RTX PRO 4500 delivers 50.70 TFLOPS, which is 106% higher than the LX ULTRA's 24.58 TFLOPS. This means the NVIDIA card can process more than twice the single-precision floating-point operations per second. For workloads heavily dependent on FP32 math, such as scientific simulation or certain rendering tasks, this gap is decisive.

In FP16 compute, the relationship shifts. The RTX PRO 4500 achieves 50.70 TFLOPS with a 1:1 ratio, meaning FP16 performance equals FP32 performance. The LX ULTRA achieves 49.15 TFLOPS with a 2:1 ratio, meaning it doubles its throughput when using FP16. Despite the lower FP32 count, the LX ULTRA's FP16 performance is within 3% of the RTX PRO 4500. For mixed-precision workloads that can use FP16, the LX ULTRA narrows the gap considerably.

Texture processing shows a similar pattern to FP32. The RTX PRO 4500 has a texture rate of 792.1 GTexel/s, while the LX ULTRA manages 384.0 GTexel/s. The NVIDIA card is 106% faster in texture fill, which matters for applications that sample textures heavily. The pixel rate tells a slightly different story: the RTX PRO 4500 achieves 270.5 GPixel/s versus 192.0 GPixel/s for the LX ULTRA, a 41% advantage.

Memory bandwidth is another major separation point. The RTX PRO 4500 provides 800.3 GB/s, while the LX ULTRA provides 432.0 GB/s. The NVIDIA card has 85% more bandwidth, which directly impacts performance in bandwidth-bound scenarios like large dataset processing or high-resolution rendering. The LX ULTRA's 24 GB capacity is 8 GB less than the RTX PRO 4500's 32 GB, so both capacity and speed favor the NVIDIA card.

Both cards share the same release date in the database, and both are listed as active production products. Both also occupy the 50th percentile among all GPUs in the database, indicating they sit at the midpoint of the performance distribution, though this percentile is based on currently recorded data.

Specification Differences

| Specification | NVIDIA RTX PRO 4500 Blackwell Server | Lisuan Tech LX ULTRA |

|---|---|---|

| Chip | GB203 | 7G105 |

| Architecture | Blackwell 2.0 | TrueGPU |

| Generation | Server Blackwell (Bxx) | 7G100 |

| Process Node | 5 nm | 6 nm |

| Transistors | 45,600 million | Unknown |

| Die Size | 378 mm² | Unknown |

| Transistor Density | 120.6M / mm² | Not recorded |

| Base Clock | 1215 MHz | Not recorded |

| Boost Clock | 2415 MHz | Not recorded |

| Memory Clock | 1563 MHz (25 Gbps effective) | 2250 MHz (18 Gbps effective) |

| Memory Size | 32 GB | 24 GB |

| Memory Type | GDDR7 | GDDR6 |

| Memory Bus Width | 256 bit | 192 bit |

| Memory Bandwidth | 800.3 GB/s | 432.0 GB/s |

| Shading Units | 10,496 | 6,144 |

| TMUs | 328 | 192 |

| ROPs | 112 | 96 |

| RT Cores | 82 | Not recorded |

| Tensor Cores | 328 | Not recorded |

| Pixel Rate | 270.5 GPixel/s | 192.0 GPixel/s |

| Texture Rate | 792.1 GTexel/s | 384.0 GTexel/s |

| FP32 Performance | 50.70 TFLOPS | 24.58 TFLOPS |

| FP16 Performance | 50.70 TFLOPS (1:1) | 49.15 TFLOPS (2:1) |

| TDP | 165 W | 225 W |

| Slot Width | Single-slot | Dual-slot |

| Power Connector | 1x 16-pin | 1x 16-pin |

| Suggested PSU | 450 W | 550 W |

| Bus Interface | PCIe 5.0 x16 | PCIe 4.0 x16 |

| Display Outputs | No outputs | 4x DisplayPort 1.4a |

| Vulkan Support | 1.4 | 1.3 |

| Length | 267 mm | 268 mm |

| Height | 111 mm | 112 mm |

| Width | 40 mm | 40 mm |

| Predecessor | Server Hopper | Not recorded |

| Successor | Server Rubin | Not recorded |

The Verdict

The recorded data shows a clear performance hierarchy between these two cards, but the appropriate choice depends on the workload requirements.

For compute-intensive tasks that rely on FP32 throughput, the NVIDIA RTX PRO 4500 Blackwell Server is the stronger option. Its 50.70 TFLOPS FP32 performance is more than double the LX ULTRA's 24.58 TFLOPS. The NVIDIA card also offers superior memory bandwidth at 800.3 GB/s, a larger 32 GB memory pool, and higher texture and pixel fill rates. The 82 ray tracing cores and 328 tensor cores provide dedicated hardware for workloads that use those features, which the LX ULTRA lacks entirely. The single-slot design and lower 165 W TDP also make the RTX PRO 4500 easier to integrate into dense server configurations. The PCIe 5.0 x16 interface provides double the bandwidth of the LX ULTRA's PCIe 4.0 x16 connection for data transfer between the GPU and host system.

For workloads that can exploit FP16 computation, the Lisuan Tech LX ULTRA becomes more competitive. Its 49.15 TFLOPS FP16 performance is nearly equal to the RTX PRO 4500's 50.70 TFLOPS. The LX ULTRA also provides four DisplayPort 1.4a outputs, enabling direct display connectivity without a separate graphics adapter. This makes it suitable for workstation environments where visual output is required. The dual-slot cooler and higher 225 W TDP suggest a more aggressive thermal solution, which may support sustained operation under load.

The absence of recorded benchmark scores means these conclusions are drawn entirely from the hardware specifications. The database shows both cards at the 50th percentile among all GPUs, though this metric will be refined as actual benchmark data becomes available. The RTX PRO 4500 targets server deployments where compute density, memory bandwidth, and power efficiency are paramount. The LX ULTRA targets workstation use cases where display outputs, FP16 throughput, and a more conventional form factor are priorities. The choice between them is determined by whether the workload demands raw FP32 compute and memory bandwidth, or requires display connectivity and competitive FP16 performance with a lower overall compute ceiling.