AMD Radeon 780M vs AMD Ryzen Z2 GPU Comparison

The Verdict

The database comparison between the AMD Radeon 780M and the AMD Ryzen Z2 GPU presents an unusual situation. The Radeon 780M has a recorded average benchmark score of 17588 across three tests, placing it in the 61st percentile of all GPUs. The Ryzen Z2 GPU has no recorded benchmark scores in the database, an average score of 0, and sits in the 50th percentile. This means the 780M is the only one of the two with measurable performance data, and it outperforms the Ryzen Z2 GPU by default in every recorded test. The Ryzen Z2 GPU, however, carries a higher TDP of 28 W compared to the 780M's 15 W, and it comes with dedicated 16 GB of LPDDR5X memory on a 128-bit bus, while the 780M relies on system-shared memory.

The 780M is the clear choice for any workload where benchmark validation matters, as its scores are verifiable. The Ryzen Z2 GPU is an unknown quantity in the database; its lack of benchmark entries means it cannot be compared directly. For users who require proven performance, the 780M is the only option with data. For those who prioritize a fixed memory allocation and a higher power envelope, the Ryzen Z2 GPU offers those specifications, but its performance remains unmeasured. The data does not support a performance recommendation for the Ryzen Z2 GPU.

Architecture Differences

Both GPUs share the same RDNA 3.0 architecture, but they belong to different generations and chips. The Radeon 780M uses the Phoenix chip and is classified under the Navi III IGP (Phoenix) generation. The Ryzen Z2 GPU uses the Hawk Point chip and is classified under the Console GPU (AMD) generation. Both are built on the same 4 nm process at TSMC, with identical transistor counts of 25,390 million and identical die sizes of 178 mm². The transistor density is also identical at 142.6M per mm².

The core configurations are exactly the same: 768 shading units, 48 texture mapping units, 32 raster operations pipelines, and 12 ray tracing cores. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The pixel rate differs slightly, with the 780M at 92.80 GPixel/s versus the Ryzen Z2 GPU at 86.40 GPixel/s. Texture rates are 139.2 GTexel/s for the 780M and 129.6 GTexel/s for the Ryzen Z2 GPU. FP32 and FP16 compute are both 8.909 TFLOPS for the 780M and 8.294 TFLOPS for the Ryzen Z2 GPU.

Clock speeds explain these differences. The 780M has a base clock of 800 MHz and a boost clock of 2900 MHz. The Ryzen Z2 GPU has the same 800 MHz base clock but a lower boost clock of 2700 MHz. The Ryzen Z2 GPU also lists a memory clock of 937 MHz with 7.5 Gbps effective speed, while the 780M lists memory as system shared.

The memory subsystems are the primary architectural divergence. The 780M uses system-shared memory with a system-dependent bus width and bandwidth. The Ryzen Z2 GPU has 16 GB of LPDDR5X memory on a 128-bit bus, delivering 119.9 GB/s of bandwidth. The 780M has no dedicated memory, so its bandwidth depends entirely on the host system.

Power specifications also differ. The 780M has a TDP of 15 W, while the Ryzen Z2 GPU has a TDP of 28 W. Both have no power connectors. The 780M is marked as an IGP with a PCIe 4.0 x8 bus interface, while the Ryzen Z2 GPU has no listed slot width or bus interface, and its display output is limited to 1x USB Type-C. The 780M's display outputs are motherboard dependent.

Release dates differ by nearly a year. The 780M was released on 2024-01-30, and the Ryzen Z2 GPU was released on 2024-12-31. The 780M has a predecessor named Navi II IGP and a successor named Navi III IGP, while the Ryzen Z2 GPU has no predecessor or successor listed.

Head-to-Head Benchmarks

The head-to-head benchmark section in the database is empty. No direct comparison tests exist between the two GPUs. However, the 780M has three individual benchmark scores that stand on their own. In 3dmark_3dmark_steel_nomad_dx12, the 780M scores 480. In geekbench_opencl, it scores 18602. In geekbench_vulkan, it scores 33683. These three scores produce an average of 17588.

The Ryzen Z2 GPU has no benchmark entries at all. Its average score is recorded as 0, and its nearest rival list is empty. The database gives it a 50th percentile ranking, but this is not based on any measured performance. The 780M's 61st percentile ranking is supported by actual data.

For nearest rivals, the 780M sits close to several other GPUs. The AMD Radeon Pro 560 has an average score of 17551, which is 0.2% lower than the 780M. The NVIDIA GeForce RTX 4060 has an average score of 17639, which is 0.3% higher than the 780M. The AMD Radeon HD 7790 has an average score of 17666, which is 0.4% higher. The AMD Radeon Pro 460 has an average score of 17509, which is 0.5% lower. These deltas are all within half a percent, indicating that the 780M's performance is tightly clustered with these four GPUs.

In the absence of any Ryzen Z2 GPU benchmarks, the head-to-head comparison is one-sided. The 780M is the only GPU with measurable performance. The Ryzen Z2 GPU's 50th percentile ranking suggests it is expected to be average, but the database has no evidence to support a specific score.

FAQ

Q: Which GPU has a higher boost clock?

A: The AMD Radeon 780M has a boost clock of 2900 MHz, while the AMD Ryzen Z2 GPU has a boost clock of 2700 MHz. Both have the same base clock of 800 MHz.

Q: How much memory does each GPU have?

A: The Radeon 780M uses system-shared memory with no dedicated size. The Ryzen Z2 GPU has 16 GB of LPDDR5X memory on a 128-bit bus with 119.9 GB/s bandwidth.

Q: What is the TDP difference between the two?

A: The Radeon 780M has a TDP of 15 W. The Ryzen Z2 GPU has a TDP of 28 W. The Ryzen Z2 GPU draws 13 W more under the same thermal design power definition.

Q: Which GPU has better recorded benchmark performance?

A: The Radeon 780M has an average benchmark score of 17588 across three tests. The Ryzen Z2 GPU has no recorded benchmark scores, so the 780M is the only one with measurable performance.

Q: Are the core configurations identical?

A: Yes, both GPUs have 768 shading units, 48 TMUs, 32 ROPs, and 12 ray tracing cores. They also share the same RDNA 3.0 architecture and 4 nm process node.

Q: What is the percentile ranking for each GPU?

A: The Radeon 780M is in the 61st percentile of all GPUs. The Ryzen Z2 GPU is in the 50th percentile. The 780M's ranking is based on its average score, while the Ryzen Z2 GPU's ranking has no supporting benchmark data.

Where Each One Wins

The Radeon 780M wins in every measured benchmark category because the Ryzen Z2 GPU has no benchmark entries. The 780M's 3dmark steel nomad score of 480, its Geekbench OpenCL score of 18602, and its Geekbench Vulkan score of 33683 all stand as the only recorded performance data. The 780M also has a higher boost clock (2900 MHz vs 2700 MHz), a higher pixel rate (92.80 GPixel/s vs 86.40 GPixel/s), a higher texture rate (139.2 GTexel/s vs 129.6 GTexel/s), and higher FP32 and FP16 compute (8.909 TFLOPS vs 8.294 TFLOPS). It also has a wider bus interface, using PCIe 4.0 x8, while the Ryzen Z2 GPU has no listed bus interface.

The Ryzen Z2 GPU wins in memory configuration and power allocation. It has 16 GB of dedicated LPDDR5X memory on a 128-bit bus with 119.9 GB/s bandwidth. The 780M has system-shared memory with system-dependent bandwidth. The Ryzen Z2 GPU also has a higher TDP of 28 W, which suggests it is designed to sustain higher power draw, although this does not translate to higher benchmark scores in the database. The Ryzen Z2 GPU also has a specific display output of 1x USB Type-C, while the 780M's outputs are motherboard dependent.

For use-case analysis, the 780M is suited for scenarios where benchmark-verified performance is required. Its 61st percentile ranking and proximity to the RTX 4060 (0.3% higher) and Radeon Pro 560 (0.2% lower) indicate it performs in a known range. The Ryzen Z2 GPU is suited for scenarios where a fixed 16 GB memory pool and a higher TDP are desirable, but its actual performance is unverified. The data does not support any claim that the Ryzen Z2 GPU outperforms the 780M, as no such measurement exists.

Specification Differences

The two GPUs differ in the following recorded fields:

• Chip: Phoenix (780M) vs Hawk Point (Ryzen Z2 GPU)
• Generation: Navi III IGP (Phoenix) vs Console GPU (AMD)
• Boost Clock: 2900 MHz vs 2700 MHz
• Memory Size: System Shared vs 16 GB
• Memory Type: System Shared vs LPDDR5X
• Memory Bus Width: System Shared vs 128 bit
• Memory Bandwidth: System Dependent vs 119.9 GB/s
• Memory Clock: Not listed vs 937 MHz (7.5 Gbps effective)
• Pixel Rate: 92.80 GPixel/s vs 86.40 GPixel/s
• Texture Rate: 139.2 GTexel/s vs 129.6 GTexel/s
• FP32 Compute: 8.909 TFLOPS vs 8.294 TFLOPS
• FP16 Compute: 8.909 TFLOPS (1:1) vs 8.294 TFLOPS (1:1)
• TDP: 15 W vs 28 W
• Slot Width: IGP vs not listed
• Bus Interface: PCIe 4.0 x8 vs not listed
• Display Outputs: Motherboard Dependent vs 1x USB Type-C
• Release Date: 2024-01-30 vs 2024-12-31
• Predecessor: Navi II IGP vs not listed
• Successor: Navi III IGP vs not listed
• Benchmark Scores: Three recorded tests vs none
• Average Benchmark Score: 17588 vs 0
• Percentile: 61st vs 50th
• Nearest Rivals: Four listed with deltas from +0.5% to -0.4% vs none

The GPUs share identical specifications in process node (4 nm), foundry (TSMC), transistor count (25,390 million), die size (178 mm²), transistor density (142.6M per mm²), base clock (800 MHz), shading units (768), TMUs (48), ROPs (32), ray tracing cores (12), power connectors (None), and API support (DirectX 12 Ultimate 12_2, OpenGL 4.6, Vulkan 1.4). Both have no launch MSRP recorded.