AMD Instinct MI355X vs NVIDIA Jetson T4000 Comparison

The Verdict

The AMD Instinct MI355X and NVIDIA Jetson T4000 occupy opposite ends of the accelerator spectrum. The MI355X is a 1400 W OAM module built for maximum throughput in rack-scale AI and HPC systems. The Jetson T4000 is a 90 W IGP designed for embedded and edge deployments. The data shows no overlap in target use cases. The MI355X delivers 78.64 TFLOPS FP32 and 288 GB of HBM3e with 8.19 TB/s of bandwidth, while the Jetson T4000 provides 4.700 TFLOPS FP32 and 64 GB of LPDDR5X at 273.2 GB/s. The recorded data indicates the MI355X is roughly 16.7 times faster in raw FP32 compute and offers 30.3 times more memory bandwidth. The Jetson T4000 counters with a 90 W TDP, a 250 W suggested PSU, and a compact 87 mm by 100 mm footprint, compared to the MI355X's 102 mm by 165 mm OAM module. Neither part has any display outputs, and neither exposes DirectX, OpenGL, or Vulkan APIs. The MI355X is for datacenter compute nodes; the Jetson T4000 is for power-constrained embedded systems. The database records no head-to-head benchmark wins for either part, as no shared benchmark results exist.

Architecture Differences

The MI355X uses the MI350 256CU chip built on CDNA 4.0 architecture, fabricated on a 3 nm process at TSMC. The Jetson T4000 uses the GB10B chip built on Blackwell architecture, fabricated on a 5 nm process at TSMC. The MI355X carries 185,000 million transistors on a 2380 mm² die, yielding a transistor density of 77.7M per mm². The Jetson T4000's transistor count is unknown, but its die size is 391 mm². The MI355X belongs to the Instinct (MIx) generation, while the Jetson T4000 belongs to the Server Blackwell (Bxx) generation.

The MI355X packs 16,384 shading units, 1,024 texture mapping units, and no ROPs, resulting in a pixel rate of 0 MPixel/s and a texture rate of 2,457.6 GTexel/s. The Jetson T4000 has 1,536 shading units, 48 TMUs, 16 ROPs, 12 ray tracing cores, and 64 tensor cores, producing a pixel rate of 24.48 GPixel/s and a texture rate of 73.44 GTexel/s. The MI355X has no listed ray tracing or tensor core counts. Both parts deliver FP16 at a 1:1 ratio with FP32: the MI355X at 78.64 TFLOPS and the Jetson T4000 at 4.700 TFLOPS.

Clock behavior differs sharply. The MI355X runs at a 1000 MHz base and 2400 MHz boost, while the Jetson T4000 operates at a fixed 1530 MHz for both base and boost. Memory clocks also diverge: the MI355X uses 2000 MHz with 8 Gbps effective transfer, and the Jetson T4000 uses 1067 MHz with 8.5 Gbps effective. The MI355X supports a 8192 bit memory bus, the Jetson T4000 a 256 bit bus. The MI355X uses HBM3e memory; the Jetson T4000 uses LPDDR5X.

The MI355X has no power connectors and requires a suggested 1800 W PSU. The Jetson T4000 also has no power connectors and requires a suggested 250 W PSU. The MI355X connects via PCIe 5.0 x16, the Jetson T4000 via PCIe 5.0 x8. The MI355X has no display outputs, and neither does the Jetson T4000. Both parts list no supported graphics APIs.

Head-to-Head Benchmarks

The database contains no head-to-head benchmark entries for these two devices, and each part has an average benchmark score of 0. The percentile versus all GPUs is 50 for both. Without shared benchmark data, the analysis relies on the recorded specification fields.

The largest measured gap appears in FP32 throughput. The MI355X delivers 78.64 TFLOPS against the Jetson T4000's 4.700 TFLOPS. That places the MI355X at approximately 16.7 times the FP32 rate. Texture rate tells a similar story: 2,457.6 GTexel/s versus 73.44 GTexel/s, a 33.5 times difference. The Jetson T4000 has a nonzero pixel rate of 24.48 GPixel/s, while the MI355X records 0 MPixel/s.

Memory capacity favors the MI355X at 288 GB versus 64 GB, a 4.5 times difference. Memory bandwidth amplifies the disparity: 8.19 TB/s versus 273.2 GB/s, roughly 30 times. The MI355X's 8192 bit bus is 32 times wider than the Jetson T4000's 256 bit bus. Effective memory speed is 8 Gbps for the MI355X and 8.5 Gbps for the Jetson T4000, a minor edge for the latter.

The Jetson T4000 wins on power efficiency. Its 90 W TDP against the MI355X's 1400 W TDP means the Jetson T4000 uses 6.4% of the power. Per watt, the Jetson T4000 delivers 0.0522 TFLOPS/W, while the MI355X delivers 0.0562 TFLOPS/W. The MI355X is slightly ahead in FP32 per watt despite the massive absolute power draw. The Jetson T4000 also has a smaller physical footprint: 87 mm by 100 mm by 15 mm versus 102 mm by 165 mm with no listed height. The Jetson T4000 is the only one of the two with a production status of Active; the MI355X has no recorded production status.

Specification Differences

The MI355X and Jetson T4000 differ across nearly every recorded field.

• Chip: MI350 256CU versus GB10B
• Architecture: CDNA 4.0 versus Blackwell
• Generation: Instinct (MIx) versus Server Blackwell (Bxx)
• Process node: 3 nm versus 5 nm
• Foundry: both TSMC
• Transistors: 185,000 million versus unknown
• Die size: 2380 mm² versus 391 mm²
• Transistor density: 77.7M / mm² versus null
• Base clock: 1000 MHz versus 1530 MHz
• Boost clock: 2400 MHz versus 1530 MHz
• Memory clock: 2000 MHz 8 Gbps effective versus 1067 MHz 8.5 Gbps effective
• Memory size: 288 GB versus 64 GB
• Memory type: HBM3e versus LPDDR5X
• Memory bus width: 8192 bit versus 256 bit
• Memory bandwidth: 8.19 TB/s versus 273.2 GB/s
• Shading units: 16,384 versus 1,536
• TMUs: 1,024 versus 48
• ROPs: 0 versus 16
• RT cores: null versus 12
• Tensor cores: null versus 64
• Pixel rate: 0 MPixel/s versus 24.48 GPixel/s
• Texture rate: 2,457.6 GTexel/s versus 73.44 GTexel/s
• FP32: 78.64 TFLOPS versus 4.700 TFLOPS
• FP16: 78.64 TFLOPS (1:1) versus 4.700 TFLOPS (1:1)
• TDP: 1400 W versus 90 W
• Slot width: OAM Module versus IGP
• Suggested PSU: 1800 W versus 250 W
• Bus interface: PCIe 5.0 x16 versus PCIe 5.0 x8
• Dimensions length: 102 mm (4 inches) versus 87 mm (3.4 inches)
• Dimensions width: 165 mm (6.5 inches) versus 15 mm (0.6 inches)
• Dimensions height: null versus 100 mm (3.9 inches)
• Release date: 2025-06-11 versus 2026-01-04
• Predecessor: Radeon Instinct versus Server Hopper
• Successor: null versus Server Rubin
• Launch MSRP: null versus 1,999 USD
• Production status: null versus Active

Shared traits include no power connectors, no display outputs, no supported graphics APIs, and a 1:1 FP16 to FP32 ratio. Both have a percentile versus all GPUs of 50 and an average benchmark score of 0.

FAQ

Q: Which device has higher FP32 compute?

A: The AMD Instinct MI355X delivers 78.64 TFLOPS FP32, while the NVIDIA Jetson T4000 delivers 4.700 TFLOPS FP32. The MI355X is approximately 16.7 times faster in this metric.

Q: What memory configurations do the two devices use?

A: The MI355X uses 288 GB of HBM3e on an 8192 bit bus with 8.19 TB/s bandwidth. The Jetson T4000 uses 64 GB of LPDDR5X on a 256 bit bus with 273.2 GB/s bandwidth.

Q: Do either of these devices support display outputs or standard graphics APIs?

A: No. Both the MI355X and the Jetson T4000 list no display outputs. Both also list DirectX, OpenGL, and Vulkan as N/A.

Q: What is the power requirement difference?

A: The MI355X has a 1400 W TDP and suggests an 1800 W PSU. The Jetson T4000 has a 90 W TDP and suggests a 250 W PSU. The Jetson T4000 uses 6.4% of the MI355X's power draw.

Q: Which device has ray tracing or tensor core capabilities?

A: The Jetson T4000 includes 12 ray tracing cores and 64 tensor cores. The MI355X lists no ray tracing core count and no tensor core count in the database.

Q: What are the release dates and production statuses?

A: The MI355X has a release date of 2025-06-11 and no recorded production status. The Jetson T4000 has a release date of 2026-01-04 and a production status of Active. The Jetson T4000 also has a launch MSRP of 1,999 USD.