AMD Radeon RX 7400 OEM vs AMD Ryzen Z1 GPU Comparison

Head-to-Head Benchmarks

The database records no direct benchmark comparisons between the AMD Radeon RX 7400 OEM and the AMD Ryzen Z1 GPU. Both entries hold identical percentile positions, each sitting at the 50th percentile among all GPUs in the database, with an average benchmark score of zero recorded for both. This absence of measured results means the comparison must be drawn from the architectural and specification data captured in the database rather than from head-to-head test runs.

The raw compute figures reveal a substantial performance gap. The Radeon RX 7400 OEM delivers 7.885 TFLOPS of FP32 compute, while the Ryzen Z1 GPU manages 2.560 TFLOPS. That places the RX 7400 OEM roughly 3.08 times ahead in raw single-precision throughput, a decisive margin for any workload that scales with shader count. The RX 7400 OEM fields 1792 shading units against the Z1 GPU's 256, a 7-to-1 ratio that explains the compute disparity. Texture fill rate follows the same pattern: 123.2 GTexel/s for the RX 7400 OEM versus 40.00 GTexel/s for the Z1 GPU, a 3.08x advantage. Pixel throughput also favors the discrete card, with the RX 7400 OEM producing 70.40 GPixel/s against the Z1 GPU's 20.00 GPixel/s, again a 3.08x difference.

Memory bandwidth is where the gap widens further. The RX 7400 OEM uses 8 GB of GDDR6 on a 128-bit bus, yielding 172.8 GB/s. The Z1 GPU uses 16 GB of LPDDR5 on a 64-bit bus, yielding only 51.20 GB/s. That is a 3.375x bandwidth advantage for the RX 7400 OEM, a meaningful difference in texture-heavy scenes and high-resolution rendering where memory throughput becomes the limiting factor. The Z1 GPU compensates with double the capacity, 16 GB versus 8 GB, but at a fraction of the bandwidth.

Clock behavior runs in the opposite direction. The Z1 GPU has a base clock of 1500 MHz and a boost clock of 2500 MHz, while the RX 7400 OEM sits at 330 MHz base and 1100 MHz boost. The Z1 GPU's higher clocks do not close the compute gap because it has far fewer execution units. The Z1 GPU also carries a 2:1 ratio for FP16 output, delivering 5.120 TFLOPS of half-precision throughput against 2.560 TFLOPS FP32, whereas the RX 7400 OEM offers a 1:1 ratio at 7.885 TFLOPS for both FP16 and FP32. This means the RX 7400 OEM still exceeds the Z1 GPU's peak FP16 figure despite the Z1 GPU's dedicated half-rate path.

The Verdict

The data positions these two devices for entirely different roles. The Radeon RX 7400 OEM is a discrete, single-slot graphics card with its own 6-pin power connector, a 55 W TDP, and a suggested power supply rating of 250 W. It connects via PCIe 4.0 x8 and provides 1x HDMI 2.1a plus 3x DisplayPort 2.1 outputs. This is a rendering device designed to drive displays and process graphics workloads independently.

The Ryzen Z1 GPU is a 30 W integrated-class processor with no display outputs, no power connectors, and a 16 GB LPDDR5 memory pool on a 64-bit interface. It is an APU-style part intended for compact systems where the CPU and GPU share a package. Its 4 nm process node and 25,390 million transistors across a 178 mm² die reflect a dense, power-efficient design, but its 256 shading units and 8 ROPs place it far below the RX 7400 OEM in raw output capability.

Benchmark results, or the lack of them, indicate no recorded test where the Z1 GPU outperforms the RX 7400 OEM. The RX 7400 OEM wins on every measured specification that affects rendering performance: compute throughput, texture rate, pixel rate, and memory bandwidth. The Z1 GPU wins only on memory capacity, power draw, and process node. For any application that depends on sustained graphics throughput, the recorded data favors the RX 7400 OEM. For power-constrained or space-constrained systems where a discrete card cannot fit, the Z1 GPU's integrated nature is the relevant factor, though no benchmark data in the database confirms its real-world performance.

Where Each One Wins

The Radeon RX 7400 OEM wins in scenarios that demand raw graphics throughput. Its 7.885 TFLOPS FP32 compute, 123.2 GTexel/s texture rate, and 70.40 GPixel/s pixel rate make it the clear choice for traditional rendering workloads such as gaming, 3D content creation, and GPU-accelerated compute. The 172.8 GB/s memory bandwidth supports high-resolution textures and large frame buffers without stalling. Its 28 ray tracing cores and 1792 shading units also give it a structural advantage for modern DirectX 12 Ultimate titles that offload ray-traced effects and complex shaders. The card's 8 GB GDDR6 memory, while smaller than the Z1 GPU's 16 GB pool, operates at more than three times the bandwidth, which matters more for frame pacing than raw capacity in most rendering scenarios.

The Ryzen Z1 GPU wins in scenarios where power and integration are the priorities. Its 30 W TDP is 25 W lower than the RX 7400 OEM's 55 W TDP, and it requires no external power connector, no slot width, and no dedicated PSU recommendation. The 4 nm TSMC process node gives it a transistor density of 142.6M per mm², more than double the RX 7400 OEM's 65.2M per mm², which reflects a design aimed at efficiency rather than peak throughput. Its 16 GB LPDDR5 memory capacity doubles the RX 7400 OEM's 8 GB, which could benefit workloads that need to hold very large datasets in memory, though the 51.20 GB/s bandwidth imposes a hard ceiling on how quickly that data can be accessed. The Z1 GPU also has no display outputs, so it cannot drive a monitor directly; it relies on the host system for display.

FAQ

Q: Which GPU has higher FP32 compute performance?

A: The AMD Radeon RX 7400 OEM delivers 7.885 TFLOPS of FP32 compute, while the AMD Ryzen Z1 GPU delivers 2.560 TFLOPS. The RX 7400 OEM is roughly 3.08 times faster in this metric.

Q: How do the memory subsystems compare?

A: The RX 7400 OEM uses 8 GB of GDDR6 on a 128-bit bus with 172.8 GB/s bandwidth. The Ryzen Z1 GPU uses 16 GB of LPDDR5 on a 64-bit bus with 51.20 GB/s bandwidth. The RX 7400 OEM has higher bandwidth by a factor of 3.375, while the Z1 GPU has double the capacity.

Q: Which part has more shading units and ray tracing cores?

A: The RX 7400 OEM has 1792 shading units and 28 ray tracing cores. The Ryzen Z1 GPU has 256 shading units and 4 ray tracing cores. The RX 7400 OEM leads by a 7-to-1 margin in shading units and a 7-to-1 margin in ray tracing cores.

Q: What are the power requirements for each device?

A: The RX 7400 OEM has a 55 W TDP, requires a single 6-pin power connector, and carries a suggested power supply rating of 250 W. The Ryzen Z1 GPU has a 30 W TDP, requires no power connector, and has no suggested PSU rating listed.

Q: Can the Ryzen Z1 GPU output video to a display?

A: No. The Ryzen Z1 GPU lists "No outputs" as its display configuration. The RX 7400 OEM provides 1x HDMI 2.1a and 3x DisplayPort 2.1 outputs.

Q: Which device uses a smaller manufacturing process?

A: The Ryzen Z1 GPU is built on TSMC's 4 nm process, while the RX 7400 OEM uses TSMC's 6 nm process. The Z1 GPU also has a higher transistor density at 142.6M per mm² versus 65.2M per mm² for the RX 7400 OEM.

Architecture Differences

The two devices share a common architectural foundation but diverge sharply in implementation. Both use AMD's RDNA 3.0 architecture and both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The RX 7400 OEM belongs to the Radeon RX 7000 series, uses the Navi 33 chip with the codename "Hotpink Bonefish," and sits in the Navi III generation. The Ryzen Z1 GPU uses the Phoenix chip and is classified as a console GPU generation part, with no series, codename, or successor listed in the database.

The process nodes differ by two generations of lithography. The RX 7400 OEM uses TSMC's 6 nm process with 13,300 million transistors on a 204 mm² die, giving a transistor density of 65.2M per mm². The Ryzen Z1 GPU uses TSMC's 4 nm process with 25,390 million transistors on a 178 mm² die, yielding a density of 142.6M per mm². The Z1 GPU packs nearly twice the transistor count into a smaller die, reflecting its integrated nature and the additional logic it carries beyond graphics processing.

Memory configurations are fundamentally different. The RX 7400 OEM uses dedicated GDDR6 memory with a 128-bit bus and a memory clock of 1350 MHz, translating to 10.8 Gbps effective and 172.8 GB/s bandwidth. The Ryzen Z1 GPU uses LPDDR5 with a 64-bit bus and a memory clock of 800 MHz, or 6.4 Gbps effective, yielding 51.20 GB/s bandwidth. The Z1 GPU's 16 GB capacity is double the RX 7400 OEM's 8 GB, but the narrow bus and slower memory speed create a bandwidth bottleneck.

The compute pipelines are scaled very differently. The RX 7400 OEM has 1792 shading units, 112 texture mapping units, 64 ROPs, and 28 ray tracing cores. The Ryzen Z1 GPU has 256 shading units, 16 TMUs, 8 ROPs, and 4 ray tracing cores. The RX 7400 OEM's texture rate of 123.2 GTexel/s and pixel rate of 70.40 GPixel/s dwarf the Z1 GPU's 40.00 GTexel/s and 20.00 GPixel/s. The FP16 path also differs: the RX 7400 OEM runs FP16 and FP32 at the same 7.885 TFLOPS rate, while the Z1 GPU runs FP16 at 5.120 TFLOPS, exactly double its 2.560 TFLOPS FP32 rate.

Physical and electrical characteristics reinforce the split. The RX 7400 OEM is a single-slot card measuring 167 mm in length, or 6.6 inches, with a 55 W TDP, a single 6-pin power connector, and a suggested 250 W power supply. The Ryzen Z1 GPU measures 280 mm by 111 mm by 21 mm (11 x 4.4 x 0.8 inches), draws 30 W, has no power connectors, and has no suggested PSU rating. The RX 7400 OEM connects through PCIe 4.0 x8 and provides HDMI 2.1a and DisplayPort 2.1 outputs; the Z1 GPU lists no bus interface and no display outputs. Release timing also differs, with the RX 7400 OEM dated 2025-08-07 and the Z1 GPU dated 2023-09-17. The Z1 GPU is marked as Active in production status, while the RX 7400 OEM has no production status recorded. The Z1 GPU carries a launch MSRP of 599 USD; the RX 7400 OEM has no launch MSRP listed.