AMD Radeon 780M vs Lisuan Tech LX ULTRA Comparison

Where Each One Wins

The AMD Radeon 780M and Lisuan Tech LX ULTRA occupy completely different positions in the GPU landscape. The 780M is an integrated graphics processor designed for low-power systems, while the LX ULTRA is a discrete dual-slot add-in card with substantial memory and compute resources. Based on the recorded data, the 780M wins in the integrated efficiency category, while the LX ULTRA wins decisively in raw performance, memory capacity, and feature connectivity.

The 780M carries a TDP of just 15 W and uses system memory with a bandwidth that depends entirely on the host platform. This makes it suitable for compact laptops and mini PCs where power draw is a primary constraint. The LX ULTRA, by contrast, draws 225 W, requires a 550 W power supply, and uses a 16-pin power connector. It also occupies a dual-slot form factor with dimensions of 268 mm in length, 112 mm in height, and 40 mm in width. These physical characteristics alone dictate where each part can be deployed.

Benchmark presence also differs sharply. The 780M has recorded scores in three tests: 480 in 3DMark Steel Nomad DX12, 18602 in Geekbench OpenCL, and 33683 in Geekbench Vulkan. Its average benchmark score is 17588, and it sits at the 61st percentile among all GPUs. The LX ULTRA has no recorded benchmark scores, no average score, and a 50th percentile ranking. The absence of data means the LX ULTRA cannot be positioned through measured results, but its specifications indicate a much higher performance ceiling.

The 780M delivers 8.909 TFLOPS of FP32 performance, while the LX ULTRA delivers 24.58 TFLOPS of FP32, which is roughly 2.76 times higher. In FP16, the gap widens further: the 780M offers 8.909 TFLOPS at a 1:1 ratio, whereas the LX ULTRA offers 49.15 TFLOPS at a 2:1 ratio. Pixel throughput also favors the LX ULTRA at 192.0 GPixel/s versus 92.80 GPixel/s for the 780M. Texture fill rates show a similar pattern: 384.0 GTexel/s versus 139.2 GTexel/s.

The 780M wins where integrated efficiency matters. It uses no power connectors, has no slot width, and relies on motherboard-dependent display outputs. The LX ULTRA requires 225 W, a 550 W suggested PSU, and provides four DisplayPort 1.4a outputs. These are not competing products in the same market segment; they serve different build philosophies entirely.

Architecture Differences

The two GPUs come from different architectural lineages. The 780M uses AMD's Phoenix chip built on RDNA 3.0 architecture, belonging to the Navi III IGP generation. It is fabricated on a 4 nm process at TSMC with 25,390 million transistors on a 178 mm² die, yielding a transistor density of 142.6 million transistors per square millimeter. The LX ULTRA uses a 7G105 chip based on TrueGPU architecture, part of the 7G100 generation. It is built on a 6 nm process at TSMC, though its transistor count and die size are listed as unknown.

Core configuration differences are substantial. The 780M has 768 shading units, 48 texture mapping units, 32 ROPs, and 12 ray tracing cores. The LX ULTRA has 6144 shading units, 192 TMUs, and 96 ROPs, but no ray tracing core count is listed. The LX ULTRA's shading unit count is exactly eight times higher than the 780M's, while its TMU count is four times higher and its ROP count is three times higher.

Memory architecture is a major differentiator. The 780M uses system shared memory with a system-dependent bus width and bandwidth. The LX ULTRA packs 24 GB of GDDR6 memory on a 192-bit bus, with a memory clock of 2250 MHz (18 Gbps effective) and bandwidth of 432.0 GB/s. This dedicated memory pool is a decisive advantage for workloads that require large datasets, such as high-resolution textures or compute buffers.

The bus interface also differs. The 780M connects via PCIe 4.0 x8, while the LX ULTRA uses PCIe 4.0 x16, providing double the lane count for host communication. API support is close but not identical: both support DirectX 12 Ultimate (12_2) and OpenGL 4.6, but the 780M supports Vulkan 1.4 while the LX ULTRA supports Vulkan 1.3.

Clock behavior cannot be directly compared because the LX ULTRA's base and boost clocks are not recorded. The 780M has a base clock of 800 MHz and a boost clock of 2900 MHz. The LX ULTRA only lists its memory clock. This makes a pure frequency comparison impossible from the available data.

Head-to-Head Benchmarks

No head-to-head benchmark results exist in the database for these two GPUs. The LX ULTRA has zero recorded benchmark entries, which prevents any direct measured comparison. However, the available specification data allows for meaningful performance estimates.

The FP32 compute difference is the most striking. The LX ULTRA delivers 24.58 TFLOPS, which is 2.76 times the 780M's 8.909 TFLOPS. In FP16, the LX ULTRA's 49.15 TFLOPS is 5.52 times the 780M's 8.909 TFLOPS, a gap driven both by higher raw throughput and the 2:1 FP16 ratio versus the 1:1 ratio on the 780M.

Texture throughput favors the LX ULTRA by a factor of 2.76 (384.0 GTexel/s versus 139.2 GTexel/s). Pixel rate favors the LX ULTRA by a factor of 2.07 (192.0 GPixel/s versus 92.80 GPixel/s). These ratios align with the shading unit and TMU counts, confirming that the architectural scaling is consistent across compute, texture, and pixel work.

Memory bandwidth is where the LX ULTRA's advantage becomes extreme. With 432.0 GB/s of dedicated GDDR6 bandwidth versus system-dependent shared memory on the 780M, the LX ULTRA can sustain far higher data throughput in memory-bound scenarios. The 24 GB capacity versus system shared memory means the LX ULTRA can hold larger working sets without spilling to slower storage.

The 780M does have recorded benchmark scores: 480 in 3DMark Steel Nomad DX12, 18602 in Geekbench OpenCL, and 33683 in Geekbench Vulkan. Its average score of 17588 places it near the AMD Radeon Pro 560 (17551, 0.2% ahead), the NVIDIA GeForce RTX 4060 (17639, 0.3% behind), the AMD Radeon HD 7790 (17666, 0.4% behind), and the AMD Radeon Pro 460 (17509, 0.5% ahead). These deltas are tiny, indicating the 780M performs within a narrow band around those discrete cards in average benchmark terms. The LX ULTRA has no such comparison points.

FAQ

Q: Does the LX ULTRA have any recorded benchmark scores?

A: No. The database lists zero benchmark entries for the LX ULTRA, with an average score of 0 and no nearest rivals.

Q: What is the memory capacity difference between the two GPUs?

A: The 780M uses system shared memory with no fixed capacity, while the LX ULTRA has 24 GB of dedicated GDDR6 memory on a 192-bit bus.

Q: Which GPU has higher FP32 compute throughput?

A: The LX ULTRA delivers 24.58 TFLOPS of FP32, which is 2.76 times the 780M's 8.909 TFLOPS.

Q: What power delivery does each GPU require?

A: The 780M uses no power connectors and has a 15 W TDP. The LX ULTRA uses a single 16-pin connector, has a 225 W TDP, and requires a suggested 550 W power supply.

Q: Which GPU supports a newer Vulkan version?

A: The 780M supports Vulkan 1.4, while the LX ULTRA supports Vulkan 1.3. Both support DirectX 12 Ultimate (12_2) and OpenGL 4.6.

Q: How does the 780M compare to its nearest rivals in average benchmark score?

A: The 780M's average score of 17588 is within 0.5% of the AMD Radeon Pro 560 (17551) and AMD Radeon Pro 460 (17509), and within 0.4% of the NVIDIA GeForce RTX 4060 (17639) and AMD Radeon HD 7790 (17666).

The Verdict

The data supports a clear division of roles. The AMD Radeon 780M is an integrated GPU for systems where power draw and physical footprint are critical. Its 15 W TDP, IGP slot width, and absence of power connectors make it a natural fit for laptops, mini PCs, and low-power desktops. Its benchmark scores are modest but measurable, placing it in the 61st percentile of all GPUs and within a tight band around several older discrete cards.

The Lisuan Tech LX ULTRA is a high-power discrete GPU for desktop builds that prioritize raw throughput and memory capacity. Its 225 W TDP, dual-slot cooler, 268 mm length, and 550 W suggested PSU indicate a part designed for full-size gaming or workstation systems. The 24 GB GDDR6 memory with 432.0 GB/s bandwidth, combined with 24.58 TFLOPS FP32 and 49.15 TFLOPS FP16, positions it far above the 780M in compute and memory-bound workloads.

The choice between them depends entirely on the host platform. A compact system with limited power delivery should use the 780M. A desktop with a 550 W or higher power supply and space for a 268 mm dual-slot card should use the LX ULTRA. The LX ULTRA's lack of benchmark data means its real-world standing is unverified, but its specifications indicate a substantial performance lead over the 780M in every measured category except Vulkan version support.

Specification Differences

| Field | AMD Radeon 780M | Lisuan Tech LX ULTRA |

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

| Architecture | RDNA 3.0 | TrueGPU |

| Process Node | 4 nm | 6 nm |

| Transistors | 25,390 million | unknown |

| Die Size | 178 mm² | unknown |

| Shading Units | 768 | 6144 |

| TMUs | 48 | 192 |

| ROPs | 32 | 96 |

| RT Cores | 12 | null |

| FP32 | 8.909 TFLOPS | 24.58 TFLOPS |

| FP16 | 8.909 TFLOPS (1:1) | 49.15 TFLOPS (2:1) |

| Pixel Rate | 92.80 GPixel/s | 192.0 GPixel/s |

| Texture Rate | 139.2 GTexel/s | 384.0 GTexel/s |

| Memory Size | System Shared | 24 GB |

| Memory Type | System Shared | GDDR6 |

| Memory Bus | System Shared | 192 bit |

| Memory Bandwidth | System Dependent | 432.0 GB/s |

| Memory Clock | System Shared | 2250 MHz 18 Gbps effective |

| TDP | 15 W | 225 W |

| Slot Width | IGP | Dual-slot |

| Power Connectors | None | 1x 16-pin |

| Suggested PSU | null | 550 W |

| Bus Interface | PCIe 4.0 x8 | PCIe 4.0 x16 |

| Display Outputs | Motherboard Dependent | 4x DisplayPort 1.4a |

| Vulkan | 1.4 | 1.3 |

| Dimensions | N/A | 268 mm x 112 mm x 40 mm |