AMD Radeon 740M vs AMD Radeon RX 7900 XT Comparison

The AMD Radeon RX 7900 XT and the AMD Radeon 740M occupy opposite ends of the graphics spectrum, yet both are built on the same RDNA 3.0 architecture. The data reveals a stark performance chasm, but the comparison is not merely about raw speed; it is about how two fundamentally different implementations of the same design philosophy serve entirely different purposes. The RX 7900 XT is a discrete, end-of-life enthusiast part, while the 740M is an active, power-sipping integrated processor for mainstream laptops. This analysis examines their benchmark scores, architectural choices, and specification gaps to determine where each truly excels.

Head-to-Head Benchmarks

The head-to-head data is limited to two synthetic tests, but the results are decisive. In Geekbench OpenCL, the RX 7900 XT scores 12,756, defeating the 740M’s 10,172 by a significant 25.4%. This margin is substantial, indicating that even in a compute-oriented workload that does not fully stress the discrete card’s dedicated memory bandwidth, the RX 7900 XT’s sheer execution resources pull far ahead. The 740M’s score is respectable for an IGP, but it is clearly outclassed.

The Vulkan result is where the performance gap becomes a canyon. The RX 7900 XT delivers a score of 71,068, a staggering 356.5% higher than the 740M’s 15,568. This is not a marginal victory; it is a four-and-a-half-fold increase. The Vulkan API leverages the RX 7900 XT’s 84 ray accelerators and 5,376 shading units to a much greater degree than OpenCL. The 740M, with only 4 ray accelerators and 256 shading units, simply cannot keep pace in a modern graphics API that rewards massive parallel throughput and dedicated ray tracing hardware.

The win count is a clean sweep: the RX 7900 XT wins 2 benchmarks, while the 740M wins 0. However, the context of their average scores is crucial. The RX 7900 XT’s average benchmark score is 13,745, placing it in the 55th percentile of all GPUs. Its nearest rival is the AMD Radeon 660M, which scores 13,812, a delta of -0.5%, meaning the RX 7900 XT is essentially tied with that integrated part in this aggregate metric. This is a curious data point, suggesting that its average is dragged down by low scores in older DirectX tests (e.g., 110 in DirectX 12 and 158 in DirectX 10), which are irrelevant to its modern-day target. The 740M, by contrast, has an average score of 12,870 (53rd percentile), with its nearest rival being the AMD FirePro W5100 at 12,847 (0.2% delta). The two GPUs are close in this aggregate, but the individual test deltas tell the real story.

FAQ

Q: Which GPU is faster in raw compute performance?

A: The AMD Radeon RX 7900 XT is decisively faster. It wins the Geekbench OpenCL test by 25.4% (12,756 vs 10,172) and the Vulkan test by 356.5% (71,068 vs 15,568).

Q: Does the AMD Radeon 740M have any chance in modern gaming?

A: Based on the data, no. Its Vulkan score of 15,568 is minuscule compared to the RX 7900 XT’s 71,068, and it has only 4 ray accelerators. Its 2.867 TFLOPS FP32 performance is a fraction of the RX 7900 XT’s 51.48 TFLOPS, indicating it is not designed for demanding modern titles.

Q: Are these GPUs comparable in their technology generation?

A: Yes, both utilize the RDNA 3.0 architecture and are part of the Navi III generation. However, the RX 7900 XT uses the Navi 31 chip on a 5 nm process, while the 740M uses the Phoenix2 chip on a 4 nm process.

Q: What is the most significant architectural difference that explains the performance gap?

A: The scale of resources. The RX 7900 XT has 5,376 shading units, 336 TMUs, and 192 ROPs, compared to the 740M’s 256 shading units, 16 TMUs, and 8 ROPs. The RX 7900 XT also has 84 ray accelerators versus 4.

Q: Which GPU has a higher boost clock?

A: The AMD Radeon 740M has a higher boost clock of 2800 MHz, compared to the RX 7900 XT’s 2394 MHz. This does not translate to higher performance, as the RX 7900 XT’s massive parallel core count and dedicated memory overcome the clock deficit.

Q: How do their average benchmark scores compare?

A: The RX 7900 XT has a slightly higher average score of 13,745, while the 740M averages 12,870. This is a difference of roughly 6.8%, which is small compared to the massive deltas in the individual Vulkan and OpenCL tests.

Architecture Differences

Both GPUs are built on TSMC’s fabrication, but they use different nodes. The RX 7900 XT uses a 5 nm process, while the 740M uses a more advanced 4 nm process. This is a key difference, as the 740M’s smaller node allows for higher transistor density (152.6M / mm² vs 109.1M / mm²) despite having far fewer total transistors. The 740M’s chip, Phoenix2, is a small, power-efficient design (137 mm², 20,900 million transistors), while the RX 7900 XT’s Navi 31 is a massive, high-performance die (529 mm², 57,700 million transistors). The RX 7900 XT’s die is nearly four times larger, accommodating its vastly larger execution units.

The core configurations diverge sharply. The RX 7900 XT is built for raw throughput with 5,376 shading units, 336 texture mapping units (TMUs), and 192 render output units (ROPs). The 740M is a minimal implementation, featuring only 256 shading units, 16 TMUs, and 8 ROPs. Ray tracing hardware also differs: the RX 7900 XT has 84 ray accelerators, while the 740M has just 4. This is a 21x difference in ray tracing capability, explaining the massive Vulkan score delta.

Memory architecture is a fundamental difference. The RX 7900 XT uses 20 GB of dedicated GDDR6 memory on a 320-bit bus, delivering 800.0 GB/s of bandwidth. The 740M uses System Shared memory, with its bandwidth listed as System Dependent. This means the 740M’s performance is heavily influenced by the system’s RAM speed, whereas the RX 7900 XT has its own high-speed memory pool. The FP16 compute rates also differ: the RX 7900 XT achieves 103.0 TFLOPS (2:1 ratio), while the 740M has 2.867 TFLOPS (1:1 ratio), indicating the discrete card has dedicated hardware for faster half-precision math.

Specification Differences

| Specification | AMD Radeon RX 7900 XT | AMD Radeon 740M |

| :--- | :--- | :--- |

| Process Node | 5 nm | 4 nm |

| Chip | Navi 31 | Phoenix2 |

| Transistors | 57,700 million | 20,900 million |

| Die Size | 529 mm² | 137 mm² |

| Base Clock | 1387 MHz | 800 MHz |

| Boost Clock | 2394 MHz | 2800 MHz |

| Memory Size | 20 GB GDDR6 | System Shared |

| Memory Bus Width | 320 bit | System Shared |

| Memory Bandwidth | 800.0 GB/s | System Dependent |

| Shading Units | 5376 | 256 |

| TMUs | 336 | 16 |

| ROPs | 192 | 8 |

| Ray Accelerators | 84 | 4 |

| Pixel Rate | 459.6 GPixel/s | 22.40 GPixel/s |

| Texture Rate | 804.4 GTexel/s | 44.80 GTexel/s |

| FP32 Performance | 51.48 TFLOPS | 2.867 TFLOPS |

| TDP | 300 W | 45 W |

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

| Production Status | End-of-life | Active |

The specification table shows clear differences in every major category. The RX 7900 XT has a larger die, more memory, and significantly more compute units. The 740M’s advantage lies in its power efficiency (45 W TDP vs 300 W) and its newer manufacturing process.

The Verdict

The data points to a clear verdict for specific use cases. The AMD Radeon RX 7900 XT is the definitive choice for any workload that demands maximum graphics performance. Its 356.5% lead in Vulkan and 25.4% lead in OpenCL show it is in a different league. Its 20 GB of dedicated GDDR6 memory and 84 ray accelerators make it suitable for high-resolution gaming, content creation, and any GPU-accelerated compute task. The user should choose this card if their primary goal is uncompromised rendering speed.

The AMD Radeon 740M is an integrated solution for ultraportable systems. Its strengths are not in raw speed but in its minimal power draw and small footprint. It has a 45 W TDP and requires no power connectors, making it ideal for thin-and-light laptops. Its performance, while far behind the RX 7900 XT, is still competitive with older discrete GPUs like the NVIDIA GeForce GTX 590, which it matches with a 0.3% delta in average score. The user should choose this if they need a capable integrated GPU for everyday tasks, light gaming, and extended battery life, without the need for a separate graphics card.

Where Each One Wins

AMD Radeon RX 7900 XT Wins:

• Raw Compute: The 51.48 TFLOPS FP32 performance is 17.9x higher than the 740M’s 2.867 TFLOPS, making it the clear winner for any number-crunching task.
• Modern API Performance: The 356.5% win in Geekbench Vulkan is its most dominant victory, showcasing its strength in DirectX 12 and Vulkan workloads.
• Memory-Intensive Tasks: With 800.0 GB/s of bandwidth, it outpaces the system-dependent memory of the 740M, making it superior for high-resolution textures and large datasets.
• Ray Tracing: The 84 ray accelerators provide a hardware foundation for ray-traced effects, a feature the 740M lacks in any practical capacity.

AMD Radeon 740M Wins:

• Power Efficiency: A 45 W TDP versus the RX 7900 XT’s 300 W means it is designed for laptops where battery life and thermal management are paramount.
• Physical Footprint: As an IGP, it takes up no space and requires no extra power connectors, unlike the dual-slot, 276 mm-long RX 7900 XT.
• Production Status: The 740M is Active, while the RX 7900 XT is End-of-life, meaning the 740M is a current product for new system designs.
• Clock Speed: Its 2800 MHz boost clock is higher than the RX 7900 XT’s 2394 MHz, though this is a minor victory that does not translate to overall performance.