AMD Radeon 780M vs AMD Radeon RX 7600 XT Comparison

The AMD Radeon 780M and AMD Radeon RX 7600 XT are both built on the RDNA 3.0 architecture, but they occupy opposite ends of the graphics spectrum. The 780M is a 15 W integrated processor, while the RX 7600 XT is a 190 W dual-slot discrete card. Benchmark data shows a decisive performance gap, yet the 780M holds its own as a portable solution. This analysis breaks down the head-to-head results, architectural differences, and which user each product serves.

Head-to-Head Benchmarks

The RX 7600 XT wins all three shared benchmark tests, but the margin varies significantly by workload. In 3DMark Steel Nomad DX12, the RX 7600 XT scores 2348 against the 780M's 480, a delta of -79.6% from the 780M's perspective. This means the discrete card delivers roughly 4.9 times the performance in this modern DirectX 12 rasterization test. The gap is even wider in Geekbench OpenCL, where the RX 7600 XT posts 92426 versus 18602, a -79.9% delta — essentially the same proportional gap, suggesting compute-heavy workloads scale almost linearly with the hardware resources.

The closest contest comes in Geekbench Vulkan. There, the RX 7600 XT scores 48366 against the 780M's 33683, a -30.4% delta. This is a notably smaller margin than the other two tests, indicating that the 780M's Vulkan driver and architecture efficiency partially compensate for its massive resource disadvantage. The 780M's 33683 Vulkan score is actually higher than its OpenCL score by a factor of 1.8, while the RX 7600 XT's Vulkan score is only about half its OpenCL result. This suggests the integrated GPU handles Vulkan's lower-level API relatively better than OpenCL.

Looking at the broader benchmark context, the 780M's average benchmark score is 17588, while the RX 7600 XT averages 17083. Despite the RX 7600 XT winning every head-to-head test, its overall average is actually 2.9% lower. This is because the RX 7600 XT's benchmark suite includes Passmark tests where it scores low (e.g., 65 in DirectX 12, 85 in DirectX 10), which drags its average down. The 780M's average is buoyed by only three tests, all of which are reasonably strong for its class. The percentile rankings confirm this oddity: the 780M sits at the 61st percentile of all GPUs, while the RX 7600 XT sits at the 60th — effectively tied despite the head-to-head blowout.

In terms of nearest rivals, the 780M's average score sits between the AMD Radeon Pro 560 (17551, +0.2% delta) and the NVIDIA GeForce RTX 4060 (17639, -0.3% delta). The RX 7600 XT's average sits between the NVIDIA GeForce GTX 690 (17037, +0.3%) and the NVIDIA GeForce RTX 3070 (17208, -0.7%). This places both cards in a similar performance tier by aggregate score, though the distribution of that performance differs wildly — the 780M is consistent across its limited tests, while the RX 7600 XT excels in some and struggles in others.

The Verdict

The data makes one thing clear: for raw performance in modern 3D workloads, the RX 7600 XT is the overwhelming choice. Its 3DMark Steel Nomad score is nearly five times higher, and its OpenCL compute is almost five times higher. Anyone running demanding games, 3D rendering, or GPU compute tasks should pick the RX 7600 XT without hesitation. The 16 GB of dedicated GDDR6 memory and 288.0 GB/s bandwidth provide a memory subsystem that the 780M's system-shared memory cannot match.

However, the 780M has its own clear constituency. Its 15 W TDP means it requires no power connectors and fits as an IGP, making it suitable for thin-and-light laptops or compact desktops where a discrete card is physically impossible. Its Vulkan performance is within 30.4% of the RX 7600 XT, which is remarkable for a chip drawing less than one-tenth the power. The 780M's average benchmark score of 17588 actually edges out the RX 7600 XT's 17083, and its 61st percentile ranking is one point higher. For users who need a capable integrated GPU for light gaming or general graphics acceleration, the 780M is the pragmatic pick.

The RX 7600 XT's launch MSRP is 329 USD. The 780M has no listed launch MSRP, which is consistent with its IGP status — it is typically sold as part of a processor package rather than as a standalone product. The verdict hinges on form factor and power budget: the RX 7600 XT for performance, the 780M for portability and efficiency.

Architecture Differences

Both GPUs use the RDNA 3.0 architecture, but they are implemented on different process nodes and chips. The 780M uses the Phoenix chip fabricated on TSMC's 4 nm process, while the RX 7600 XT uses the Navi 33 chip on TSMC's 6 nm process. The 4 nm node gives the 780M a much higher transistor density: 142.6 million transistors per square millimeter versus 65.2 million for the RX 7600 XT. This density advantage is remarkable given the 780M's smaller die size of 178 mm² versus 204 mm² — the integrated chip packs 25,390 million transistors into a smaller area, while the discrete chip has only 13,300 million transistors in a larger space.

The RX 7600 XT compensates with far more execution resources. It has 2048 shading units, 128 texture mapping units, and 64 render output units, versus the 780M's 768 shading units, 48 TMUs, and 32 ROPs. The RX 7600 XT also has 32 ray tracing cores versus 12 on the 780M. These resource counts directly explain the performance deltas: the RX 7600 XT has 2.7 times the shading units, 2.7 times the TMUs, and 2 times the ROPs. The pixel rate of 176.3 GPixel/s and texture rate of 352.6 GTexel/s on the RX 7600 XT dwarf the 780M's 92.80 GPixel/s and 139.2 GTexel/s.

Clock speeds tell a nuanced story. The 780M has a higher boost clock of 2900 MHz versus the RX 7600 XT's 2755 MHz, and its base clock is much lower at 800 MHz versus 1980 MHz. The RX 7600 XT also lists a game clock of 2470 MHz, a metric the 780M does not provide. The 780M's higher boost clock on a 4 nm process suggests excellent per-clock efficiency, but the sheer number of cores on the RX 7600 XT overwhelms that advantage. The FP32 throughput confirms this: the RX 7600 XT delivers 22.57 TFLOPS versus the 780M's 8.909 TFLOPS — a 2.5-fold difference that aligns with the shading unit count.

Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, and neither has tensor cores. The 780M is part of the Navi III IGP generation with the chip codename Phoenix, while the RX 7600 XT is from the Navi III (RX 7000) generation with the codename Hotpink Bonefish. Their predecessors and successors also differ: the 780M follows Navi II IGP and leads to Navi III IGP, while the RX 7600 XT follows Navi II and leads to Navi IV.

Specification Differences

The most fundamental difference is memory. The RX 7600 XT has 16 GB of GDDR6 on a 128-bit bus with 288.0 GB/s bandwidth. The 780M uses system-shared memory with a system-shared bus width and system-dependent bandwidth. This means the 780M's memory performance depends entirely on the host system's RAM, while the RX 7600 XT has dedicated, predictable bandwidth.

Power and physical specs diverge sharply. The 780M has a TDP of 15 W, is an IGP with no slot width, and requires no power connectors. The RX 7600 XT has a 190 W TDP, is a dual-slot card, requires one 8-pin power connector, and recommends a 450 W PSU. The RX 7600 XT measures 204 mm in length and 115 mm in height, while the 780M has no listed dimensions. Display outputs also differ: the RX 7600 XT offers 1x HDMI 2.1a and 3x DisplayPort 2.1, while the 780M's outputs are motherboard-dependent.

Both use a PCIe 4.0 x8 bus interface. The RX 7600 XT has a game clock of 2470 MHz and a memory clock of 2250 MHz (18 Gbps effective), while the 780M has no game clock and its memory runs at system-shared speed. The RX 7600 XT's base clock of 1980 MHz is significantly higher than the 780M's 800 MHz, though the 780M's boost clock of 2900 MHz edges out the RX 7600 XT's 2755 MHz. Release dates are close: the RX 7600 XT launched on 2024-01-23 and the 780M on 2024-01-30. The RX 7600 XT has a launch MSRP of 329 USD; the 780M has none.

FAQ

Q: Which GPU has better raw performance in 3D workloads?

A: The AMD Radeon RX 7600 XT dominates. It scores 2348 in 3DMark Steel Nomad DX12 versus the 780M's 480, a -79.6% delta from the 780M's perspective. Its FP32 throughput is 22.57 TFLOPS versus 8.909 TFLOPS.

Q: Is the 780M competitive in any benchmark?

A: Yes, in Geekbench Vulkan. The 780M scores 33683 versus the RX 7600 XT's 48366, a -30.4% delta. This is a much smaller gap than the -79.9% in OpenCL or -79.6% in 3DMark Steel Nomad.

Q: How do their average benchmark scores compare?

A: The 780M's average benchmark score is 17588, which is actually 2.9% higher than the RX 7600 XT's 17083. The 780M also holds a 61st percentile ranking versus the RX 7600 XT's 60th percentile.

Q: What is the difference in power consumption?

A: The 780M has a TDP of 15 W and requires no power connectors, while the RX 7600 XT has a TDP of 190 W, requires one 8-pin power connector, and suggests a 450 W PSU.

Q: Do they share the same architecture?

A: Yes, both use RDNA 3.0. However, the 780M uses the Phoenix chip on TSMC's 4 nm process, while the RX 7600 XT uses the Navi 33 chip on TSMC's 6 nm process.

Q: Which card has more memory?

A: The RX 7600 XT has 16 GB of dedicated GDDR6 memory on a 128-bit bus with 288.0 GB/s bandwidth. The 780M uses system-shared memory with system-dependent bandwidth.