NVIDIA RTX 4000 SFF Ada Generation vs Lisuan Tech LX ULTRA Comparison

Head-to-Head Benchmarks

The recorded data for these two cards is asymmetrical. The NVIDIA RTX 4000 SFF Ada Generation has two benchmark entries in the database, while the Lisuan Tech LX ULTRA has none. This makes a direct head-to-head comparison of measured performance impossible, but the available scores for the RTX 4000 SFF Ada Generation still provide a useful reference point.

The RTX 4000 SFF Ada Generation scores 124,812 points in Geekbench OpenCL and 109,364 points in Geekbench Vulkan. Its average benchmark score across all recorded tests is 117,088 points. The Lisuan Tech LX ULTRA has an average benchmark score of 0 points, which means the database contains no completed benchmark runs for this card. This is a significant gap in the data, and it places the LX ULTRA at the 50th percentile of all GPUs in the database, while the RTX 4000 SFF Ada Generation sits at the 95th percentile.

The nearest rivals for the RTX 4000 SFF Ada Generation put its performance in context. The NVIDIA GB10 scores 117,393 points on average, which is 0.3% higher than the RTX 4000 SFF Ada Generation. The AMD Radeon PRO W7700 scores 118,976 points, or 1.6% higher. Conversely, the RTX 4000 SFF Ada Generation outperforms the NVIDIA Tesla V100 SXM2 16 GB by 2.4%, as that card averages 114,395 points, and it leads the NVIDIA RTX A5500 Mobile by 2.8%, with that card averaging 113,944 points. These deltas are small, indicating that the RTX 4000 SFF Ada Generation operates in a tightly contested performance band.

Since the LX ULTRA has no benchmark scores, the database cannot confirm whether it would beat or lose to the RTX 4000 SFF Ada Generation in any workload. The theoretical compute figures, however, favor the LX ULTRA on raw throughput. The LX ULTRA delivers 24.58 TFLOPS of FP32 compute, which is 28.2% higher than the RTX 4000 SFF Ada Generation's 19.17 TFLOPS. In FP16, the LX ULTRA delivers 49.15 TFLOPS at a 2:1 ratio, while the RTX 4000 SFF Ada Generation delivers 19.17 TFLOPS at a 1:1 ratio. The pixel rate also favors the LX ULTRA at 192.0 GPixel/s versus 99.84 GPixel/s, and the texture rate is 384.0 GTexel/s versus 299.5 GTexel/s. These are specifications, not measured results, but they indicate the LX ULTRA is designed for higher peak throughput.

The RTX 4000 SFF Ada Generation counters with a lower power draw of 70 W, which is substantially below the LX ULTRA's 225 W. This allows the RTX 4000 SFF Ada Generation to fit into a much smaller physical package, with a length of 168 mm (6.6 inches) and a height of 69 mm (2.7 inches), compared to the LX ULTRA's 268 mm (10.6 inches) length, 112 mm (4.4 inches) height, and 40 mm (1.6 inches) width. The power connector situation also differs: the RTX 4000 SFF Ada Generation requires no external power connector, while the LX ULTRA uses a single 16-pin connector. The suggested PSU for the RTX 4000 SFF Ada Generation is 250 W, versus 550 W for the LX ULTRA.

Architecture Differences

The RTX 4000 SFF Ada Generation uses the AD104 chip built on the Ada Lovelace architecture, fabricated by TSMC on a 5 nm process. It contains 35,800 million transistors on a die size of 294 mm², giving a transistor density of 121.8 million per square millimeter. The LX ULTRA uses the 7G105 chip with the "TrueGPU" architecture, fabricated by TSMC on a 6 nm process. The database does not list transistor count, die size, or transistor density for the LX ULTRA, so those figures cannot be compared.

The RTX 4000 SFF Ada Generation has 6,144 shading units, 192 texture mapping units, and 64 render output units. It also includes 48 ray tracing cores and 192 tensor cores. The LX ULTRA also has 6,144 shading units and 192 texture mapping units, but it has 96 render output units, which is 32 more than the RTX 4000 SFF Ada Generation. The database lists no ray tracing cores or tensor cores for the LX ULTRA, suggesting the architecture may not include dedicated hardware for those features, though this is not confirmed.

Memory architecture differs meaningfully. The RTX 4000 SFF Ada Generation has 20 GB of GDDR6 memory on a 160-bit bus, delivering 280.0 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, which is a 54.3% increase in bandwidth. The memory clock for the RTX 4000 SFF Ada Generation is 1,750 MHz with 14 Gbps effective speed, while the LX ULTRA runs at 2,250 MHz with 18 Gbps effective speed.

The RTX 4000 SFF Ada Generation's base clock is 720 MHz with a boost clock of 1,560 MHz. The LX ULTRA has no base or boost clock listed in the database. The FP16 compute ratio also differs: the RTX 4000 SFF Ada Generation operates at 1:1 FP16 to FP32, while the LX ULTRA operates at 2:1, meaning it can process FP16 at twice the rate of FP32.

API support shows some differences. Both cards support DirectX 12 Ultimate (12_2) and OpenGL 4.6. The RTX 4000 SFF Ada Generation supports Vulkan 1.4, while the LX ULTRA supports Vulkan 1.3. The RTX 4000 SFF Ada Generation has four mini-DisplayPort 1.4a outputs, while the LX ULTRA has four full-size DisplayPort 1.4a outputs.

The RTX 4000 SFF Ada Generation belongs to the GeForce 40-series and is part of the Workstation Ada generation, with a predecessor listed as Workstation Ampere and a successor as Blackwell PRO W. Its release date is recorded as March 20, 2023. The LX ULTRA belongs to the 7G100 generation with no predecessor or successor listed, and its release date is recorded as March 16, 2026.

FAQ

Q: What is the performance difference between these two cards based on benchmark data?

A: The RTX 4000 SFF Ada Generation has an average benchmark score of 117,088 points, with specific scores of 124,812 in Geekbench OpenCL and 109,364 in Geekbench Vulkan. The LX ULTRA has no benchmark scores recorded in the database, so no measured performance comparison can be made.

Q: How does the RTX 4000 SFF Ada Generation compare to its nearest rivals?

A: The NVIDIA GB10 scores 117,393 points, which is 0.3% higher. The AMD Radeon PRO W7700 scores 118,976 points, which is 1.6% higher. The RTX 4000 SFF Ada Generation beats the NVIDIA Tesla V100 SXM2 16 GB by 2.4% and the NVIDIA RTX A5500 Mobile by 2.8%.

Q: Which card has more memory bandwidth?

A: The LX ULTRA has 432.0 GB/s of bandwidth from 24 GB of GDDR6 on a 192-bit bus. The RTX 4000 SFF Ada Generation has 280.0 GB/s from 20 GB of GDDR6 on a 160-bit bus. The LX ULTRA provides 54.3% more bandwidth.

Q: What are the power requirements for each card?

A: The RTX 4000 SFF Ada Generation has a TDP of 70 W, requires no external power connector, and needs a 250 W suggested PSU. The LX ULTRA has a TDP of 225 W, uses a single 16-pin power connector, and needs a 550 W suggested PSU.

Q: Do both cards support the same APIs?

A: Both support DirectX 12 Ultimate (12_2) and OpenGL 4.6. The RTX 4000 SFF Ada Generation supports Vulkan 1.4, while the LX ULTRA supports Vulkan 1.3.

Q: How do the physical dimensions compare?

A: The RTX 4000 SFF Ada Generation measures 168 mm (6.6 inches) in length and 69 mm (2.7 inches) in height. The LX ULTRA measures 268 mm (10.6 inches) in length, 112 mm (4.4 inches) in height, and 40 mm (1.6 inches) in width. Both are dual-slot cards.

Specification Differences

The following specifications differ between the two cards:

• Chip: AD104 (RTX 4000 SFF Ada Generation) versus 7G105 (LX ULTRA)
• Architecture: Ada Lovelace versus TrueGPU
• Generation: Workstation Ada versus 7G100
• Process node: 5 nm versus 6 nm
• Transistors: 35,800 million versus unknown
• Die size: 294 mm² versus unknown
• Transistor density: 121.8M per mm² versus not listed
• Base clock: 720 MHz versus not listed
• Boost clock: 1,560 MHz versus not listed
• Memory clock: 1,750 MHz (14 Gbps effective) versus 2,250 MHz (18 Gbps effective)
• Memory size: 20 GB versus 24 GB
• Memory bus width: 160 bit versus 192 bit
• Memory bandwidth: 280.0 GB/s versus 432.0 GB/s
• ROPs: 64 versus 96
• Ray tracing cores: 48 versus not listed
• Tensor cores: 192 versus not listed
• Pixel rate: 99.84 GPixel/s versus 192.0 GPixel/s
• Texture rate: 299.5 GTexel/s versus 384.0 GTexel/s
• FP32 performance: 19.17 TFLOPS versus 24.58 TFLOPS
• FP16 performance: 19.17 TFLOPS (1:1) versus 49.15 TFLOPS (2:1)
• TDP: 70 W versus 225 W
• Power connectors: None versus 1x 16-pin
• Suggested PSU: 250 W versus 550 W
• Display outputs: 4x mini-DisplayPort 1.4a versus 4x DisplayPort 1.4a
• Vulkan support: 1.4 versus 1.3
• Length: 168 mm (6.6 inches) versus 268 mm (10.6 inches)
• Height: 69 mm (2.7 inches) versus 112 mm (4.4 inches)
• Width: not listed versus 40 mm (1.6 inches)
• Release date: March 20, 2023 versus March 16, 2026
• Predecessor: Workstation Ampere versus not listed
• Successor: Blackwell PRO W versus not listed
• Average benchmark score: 117,088 versus 0
• Percentile: 95th versus 50th

Where Each One Wins

The RTX 4000 SFF Ada Generation wins in power efficiency and physical footprint. Its 70 W TDP means it needs no external power connector, and it fits within a 250 W PSU budget. The card's dimensions of 168 mm in length and 69 mm in height allow installation in compact chassis, and the dual-slot design is maintained. The 5 nm process node and 35,800 million transistor count on a 294 mm² die indicate a dense, modern implementation. The card's measured benchmark performance, with an average score of 117,088 points, places it at the 95th percentile of all GPUs, and its nearest rivals are within a narrow 2.8% band, showing consistent competitiveness. The 48 ray tracing cores and 192 tensor cores provide dedicated hardware for those workloads, which the LX ULTRA does not list. The Vulkan 1.4 API support is also a step ahead of the LX ULTRA's Vulkan 1.3.

The LX ULTRA wins on raw compute throughput and memory capacity. Its 24.58 TFLOPS of FP32 performance exceeds the RTX 4000 SFF Ada Generation by 28.2%, and its FP16 performance of 49.15 TFLOPS is more than double. The 24 GB memory capacity and 432.0 GB/s bandwidth provide 20% more memory and 54.3% more bandwidth, which can benefit large datasets and high-resolution textures. The 96 ROPs deliver a pixel rate of 192.0 GPixel/s, which is 92.3% higher than the RTX 4000 SFF Ada Generation's 99.84 GPixel/s. The texture rate of 384.0 GTexel/s is also higher, at 28.2% above the RTX 4000 SFF Ada Generation's 299.5 GTexel/s. The LX ULTRA runs on a 6 nm process, which is slightly older than the 5 nm node of the RTX 4000 SFF Ada Generation, but this does not change its compute advantages.

The Verdict

The RTX 4000 SFF Ada Generation is the verified performer. It has recorded benchmark scores, an average score of 117,088 points, and a 95th percentile ranking. The data shows it competes closely with the NVIDIA GB10, AMD Radeon PRO W7700, NVIDIA Tesla V100 SXM2 16 GB, and NVIDIA RTX A5500 Mobile, all within a 2.8% performance delta. Its 70 W power draw and compact 168 mm length make it suitable for space-constrained and power-limited systems, and the lack of an external power connector simplifies installation. The card's 20 GB of memory and 280.0 GB/s bandwidth are adequate for many professional workloads, and the inclusion of ray tracing and tensor cores provides specialized processing capabilities.

The Lisuan Tech LX ULTRA is an unverified specification. The database contains no benchmark scores for this card, so its real-world performance cannot be confirmed. The theoretical figures are impressive: 24.58 TFLOPS FP32, 49.15 TFLOPS FP16, 432.0 GB/s bandwidth, and 24 GB of memory. However, the 225 W TDP and 550 W suggested PSU requirement mean it demands a more substantial power supply, and its 268 mm length and 112 mm height require a larger chassis. The lack of listed ray tracing and tensor cores, combined with Vulkan 1.3 support, suggests a different feature set from the RTX 4000 SFF Ada Generation.

For users who need confirmed performance in a small, low-power package, the RTX 4000 SFF Ada Generation is the clear choice based on the recorded data. For users who require maximum raw compute throughput and memory bandwidth, the LX ULTRA offers higher specifications on paper, but without benchmark results, those numbers remain unvalidated. The 70 W versus 225 W power difference is substantial, and the physical size difference is equally significant. The RTX 4000 SFF Ada Generation's 95th percentile ranking versus the LX ULTRA's 50th percentile ranking reflects the availability of measured data, not necessarily an absolute performance gap, but it is the only comparative metric the database provides.