AMD Ryzen Z2 A GPU vs NVIDIA GeForce RTX 4090 Mobile Comparison

Head-to-Head Benchmarks

The recorded data for the AMD Ryzen Z2 A GPU contains no benchmark entries, while the NVIDIA GeForce RTX 4090 Mobile carries a full suite of nine benchmark results. This asymmetry means the comparison rests entirely on the NVIDIA side of the ledger, with the AMD part's performance profile remaining unquantified in the database. The RTX 4090 Mobile's average benchmark score of 43667 places it at the 84th percentile of all GPUs tracked, a strong position that reflects consistent results across multiple test types.

Looking at the NVIDIA part's individual scores, the Geekbench OpenCL result of 180831 stands as the highest single number recorded, with the Vulkan test close behind at 170774. These two compute-oriented benchmarks show the GPU's ability to sustain high throughput across different API frameworks. The Passmark suite tells a more varied story: the G3D score of 27212 is the strongest DirectX-era result, while the G2D score of 984 indicates a comparatively modest 2D performance level. Compute workloads appear well served, as the Passmark GPU compute score of 12347 demonstrates, though the older DirectX tests show lower absolute numbers. The DirectX 9 score of 310, DirectX 11 score of 262, DirectX 10 score of 173, and DirectX 12 score of 107 each reflect specific legacy API performance characteristics.

The nearest rivals in the database provide context for these results. The NVIDIA RTX A6000 sits 0.9% above the RTX 4090 Mobile with an average score of 44075, making it the closest competitor from above. From below, the NVIDIA Quadro M6000 trails by only 0.8% with 43301, the GeForce RTX 5050 Mobile is 0.9% behind at 43268, and the Quadro M6000 24 GB matches that 0.9% gap with 43262. These narrow margins, all within one percentage point, indicate the RTX 4090 Mobile occupies a tightly contested performance tier where small score differences separate adjacent products.

Since the AMD Ryzen Z2 A GPU has no benchmark records, no direct head-to-head wins can be assigned to either part. The wins tally in the database shows zero for both sides, reflecting the absence of paired test data. What the data does show is that the RTX 4090 Mobile delivers substantial compute and graphics scores across the board, while the AMD part's capabilities remain unmeasured within this database.

Architecture Differences

The two GPUs diverge fundamentally in their underlying architectures. AMD's Ryzen Z2 A GPU uses the Van Gogh chip built on RDNA 2.0, a 7 nm design produced at TSMC. NVIDIA's RTX 4090 Mobile employs the AD103 chip with Ada Lovelace architecture, fabricated on a 5 nm process also at TSMC. The process node difference, 7 nm versus 5 nm, contributes to a striking disparity in transistor density: the AMD chip packs 2,400 million transistors across a 163 mm² die for a density of 14.7M per mm², while the NVIDIA chip crams 45,900 million transistors into 379 mm², achieving 121.1M per mm². That density gap, roughly eightfold, reflects the newer fabrication technology and the vastly larger transistor budget on the NVIDIA side.

Clock behavior also differs between the parts. The AMD GPU runs at a 1000 MHz base clock with a 1600 MHz boost, while the NVIDIA GPU starts at 1335 MHz base and reaches 1695 MHz boost. Memory clocks show an even larger divergence: the AMD part uses 800 MHz with 6.4 Gbps effective data rate, whereas the NVIDIA part operates at 2250 MHz with 18 Gbps effective. These clock figures, combined with the architectural differences, set the stage for the performance gap seen in the benchmark scores.

Memory subsystems take entirely different approaches. AMD pairs the Ryzen Z2 A GPU with 16 GB of LPDDR5 on a 128 bit bus, yielding 102.4 GB/s of bandwidth. NVIDIA equips the RTX 4090 Mobile with 16 GB of GDDR6 on a 256 bit bus, delivering 576.0 GB/s. The bandwidth ratio, 576.0 versus 102.4, represents a 5.6x advantage for the NVIDIA part, a factor that directly influences texture-heavy and compute-heavy workloads.

Compute resources differ by an order of magnitude. AMD provides 512 shading units, 32 texture mapping units, and 16 raster output pipelines, alongside 8 ray tracing cores. NVIDIA counters with 9728 shading units, 304 TMUs, 112 ROPs, 76 ray tracing cores, and 304 tensor cores. The shading unit count alone, 512 versus 9728, shows a 19x difference. Pixel and texture rates follow suit: AMD achieves 25.60 GPixel/s and 51.20 GTexel/s, while NVIDIA reaches 189.8 GPixel/s and 515.3 GTexel/s. Floating point throughput tells a similar story, with AMD at 1.638 TFLOPS FP32 and 3.277 TFLOPS FP16 (2:1 ratio), against NVIDIA's 32.98 TFLOPS for both FP32 and FP16 (1:1 ratio).

Power and form factor also separate the two. The AMD Ryzen Z2 A GPU carries a 15 W TDP and a single USB Type-C display output, reflecting its console-oriented design. The NVIDIA RTX 4090 Mobile has a 120 W TDP, uses an IGP slot width, features no power connectors, and lists its display outputs as portable device dependent. The bus interface differs as well: the AMD part has no recorded bus interface, while the NVIDIA part uses PCIe 4.0 x16. Both share identical API support, including DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Where Each One Wins

Without benchmark data for the AMD Ryzen Z2 A GPU, the database offers no measured evidence of where that part might excel. Its specifications suggest certain strengths, however. The 15 W TDP points to a low-power design suited for constrained thermal environments, and the 16 GB LPDDR5 memory capacity, equal to the NVIDIA part's 16 GB, provides ample memory for its class. The single USB Type-C output indicates a compact, integrated form factor. These traits align with a console GPU role, where efficiency and integration matter more than raw throughput.

The NVIDIA RTX 4090 Mobile, by contrast, has a full benchmark record that defines its strengths clearly. The Geekbench OpenCL score of 180831 and Vulkan score of 170774 show exceptional compute capability, while the Passmark G3D score of 27212 demonstrates strong 3D rendering performance. The 576.0 GB/s memory bandwidth, 189.8 GPixel/s pixel rate, and 515.3 GTexel/s texture rate all point to a part built for high-resolution gaming and demanding professional workloads. The 304 tensor cores add dedicated AI acceleration hardware, a feature the AMD part lacks entirely.

The percentile data reinforces this split. The RTX 4090 Mobile sits at the 84th percentile of all GPUs, with an average benchmark score of 43667. The AMD Ryzen Z2 A GPU holds a 50th percentile ranking, but this figure carries no benchmark support in the database, making it an unverified placement. The NVIDIA part's nearest rivals, all within 0.9% of its average score, show it competes directly with high-end workstation cards like the RTX A6000 and Quadro M6000 variants. Those comparisons position the RTX 4090 Mobile firmly in the upper tier of mobile graphics.

Use-case outcomes follow from these measurements. For workloads that demand maximum compute throughput, ray tracing capability, or AI acceleration, the NVIDIA part has demonstrated results. For scenarios where power draw is the limiting factor, the AMD part's 15 W TDP versus 120 W TDP gives it a clear theoretical advantage, though the database contains no performance data to confirm what that efficiency buys in practice.

The Verdict

The database presents a one-sided comparison. The NVIDIA GeForce RTX 4090 Mobile arrives with nine benchmark scores, an 84th percentile ranking, and an average score of 43667 that places it within 0.9% of four closely matched rivals. The AMD Ryzen Z2 A GPU arrives with no benchmarks, no average score, and no nearest rivals, leaving its performance entirely uncharacterized. Any selection between the two must therefore rest on the measured data available.

For users prioritizing proven, high-end performance, the RTX 4090 Mobile is the only part with recorded evidence. Its Geekbench OpenCL result of 180831, Vulkan result of 170774, and Passmark G3D score of 27212 establish a capability profile that the AMD part cannot match within this database, because the AMD part has no profile at all. The 32.98 TFLOPS FP32 throughput, 576.0 GB/s bandwidth, and 76 ray tracing cores further support this choice for demanding graphics and compute tasks.

For users prioritizing power efficiency, the AMD Ryzen Z2 A GPU presents a compelling specification. Its 15 W TDP represents a fraction of the NVIDIA part's 120 W, and its 16 GB memory capacity matches the RTX 4090 Mobile. The 7 nm process and RDNA 2.0 architecture indicate a modern design. However, the absence of benchmark data means no performance claims can be verified, and the 50th percentile ranking carries no supporting measurements.

The data suggests a clear split: the RTX 4090 Mobile for those who need demonstrated high-end performance, the Ryzen Z2 A GPU for those who need low power draw and accept unverified performance. The database records no head-to-head tests, no wins for either side, and no direct comparison points. That absence of data is itself the defining feature of this matchup.

FAQ

Q: What is the average benchmark score for each GPU?

A: The NVIDIA GeForce RTX 4090 Mobile has an average benchmark score of 43667. The AMD Ryzen Z2 A GPU has an average benchmark score of 0, reflecting the absence of any benchmark entries in the database.

Q: How does the RTX 4090 Mobile compare to its nearest rivals?

A: The NVIDIA RTX A6000 is 0.9% above it with an average score of 44075. The NVIDIA Quadro M6000 is 0.8% below at 43301, the GeForce RTX 5050 Mobile is 0.9% below at 43268, and the Quadro M6000 24 GB is 0.9% below at 43262.

Q: What memory configurations do the two GPUs use?

A: The AMD Ryzen Z2 A GPU uses 16 GB of LPDDR5 on a 128 bit bus with 102.4 GB/s bandwidth. The NVIDIA GeForce RTX 4090 Mobile uses 16 GB of GDDR6 on a 256 bit bus with 576.0 GB/s bandwidth.

Q: Which GPU has more shading units?

A: The NVIDIA GeForce RTX 4090 Mobile has 9728 shading units, while the AMD Ryzen Z2 A GPU has 512 shading units.

Q: What is the TDP difference between the two parts?

A: The AMD Ryzen Z2 A GPU has a TDP of 15 W. The NVIDIA GeForce RTX 4090 Mobile has a TDP of 120 W.

Q: What ray tracing and tensor core counts do the GPUs have?

A: The AMD Ryzen Z2 A GPU has 8 ray tracing cores and no tensor cores. The NVIDIA GeForce RTX 4090 Mobile has 76 ray tracing cores and 304 tensor cores.

Specification Differences

The AMD Ryzen Z2 A GPU and NVIDIA GeForce RTX 4090 Mobile differ across nearly every recorded specification. The AMD part uses the Van Gogh chip with RDNA 2.0 architecture on a 7 nm process, while the NVIDIA part uses the AD103 chip with Ada Lovelace architecture on a 5 nm process. Transistor counts are 2,400 million versus 45,900 million, and die sizes are 163 mm² versus 379 mm². Transistor density stands at 14.7M per mm² for AMD and 121.1M per mm² for NVIDIA.

Clock speeds show the NVIDIA part running higher: base clocks are 1000 MHz versus 1335 MHz, boost clocks are 1600 MHz versus 1695 MHz, and memory clocks are 800 MHz (6.4 Gbps effective) versus 2250 MHz (18 Gbps effective). Both have 16 GB of memory, but the AMD part uses LPDDR5 on a 128 bit bus, while the NVIDIA part uses GDDR6 on a 256 bit bus. Bandwidth is 102.4 GB/s versus 576.0 GB/s.

Compute resources differ substantially: shading units are 512 versus 9728, TMUs are 32 versus 304, ROPs are 16 versus 112, ray tracing cores are 8 versus 76, and tensor cores are absent on the AMD part versus 304 on the NVIDIA part. Pixel rates are 25.60 GPixel/s versus 189.8 GPixel/s, texture rates are 51.20 GTexel/s versus 515.3 GTexel/s, FP32 is 1.638 TFLOPS versus 32.98 TFLOPS, and FP16 is 3.277 TFLOPS (2:1) versus 32.98 TFLOPS (1:1). TDP is 15 W versus 120 W. The AMD part has one USB Type-C display output, while the NVIDIA part lists portable device dependent outputs. The NVIDIA part uses PCIe 4.0 x16, while the AMD part records no bus interface. Release dates are 2024-12-31 for AMD and 2023-01-02 for NVIDIA. The NVIDIA part lists a predecessor of GeForce 30 Mobile and successor of GeForce 50 Mobile, while the AMD part records neither. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.