AMD Instinct MI350X vs NVIDIA RTX 4500 Ada Generation Comparison

Head-to-Head Benchmarks

The recorded data shows no shared benchmark suite between the AMD Instinct MI350X and the NVIDIA RTX 4500 Ada Generation. The MI350X entry carries no benchmark entries, an average benchmark score of zero, and a percentile rank of 50 among all GPUs in the database. The RTX 4500 Ada Generation, by contrast, has two Geekbench results: 160,786 in OpenCL and 171,401 in Vulkan, producing an average score of 166,094 and a percentile rank of 97.

Without a common test, a direct score comparison is impossible. The database records zero wins for either side in head-to-head tests. What can be stated is the positioning of each card within its own reference frame. The RTX 4500 Ada Generation sits at the 97th percentile, meaning it outperforms nearly all other recorded GPUs. The MI350X sits at the 50th percentile, but this figure reflects the absence of benchmark data rather than measured performance; a zero average score places it at the median of a distribution that includes many consumer and workstation parts.

For the RTX 4500 Ada Generation, the nearest rivals provide context. The NVIDIA RTX A5500 averages 165,217, which is 0.5% below the RTX 4500 Ada Generation. The AMD Radeon PRO W7800 scores 164,894, trailing by 0.7%. The AMD Radeon Pro W6900X leads slightly at 168,574, putting the RTX 4500 Ada Generation 1.5% behind. The NVIDIA A100 PCIe 40 GB scores 162,504, which is 2.2% lower. These deltas are small, indicating the RTX 4500 Ada Generation occupies a tightly contested performance band among high-end workstation accelerators.

The MI350X has no nearest rivals recorded, so no relative performance statements can be made from the database. The absence of benchmarks for the MI350X is itself a notable data point. It suggests the card may be aimed at a segment where standardized testing has not yet been applied, or where the hardware is not yet available in a form that supports the same workloads.

Where Each One Wins

The MI350X wins in raw compute resources by every metric in the specification table. Its shading units number 16,384, which is more than double the 7,680 on the RTX 4500 Ada Generation. Texture mapping units stand at 1,024 versus 240, and the texture rate reaches 2,252.8 GTexel/s against 619.2 GTexel/s. FP32 throughput is 72.09 TFLOPS for the MI350X, while the RTX 4500 Ada Generation delivers 39.63 TFLOPS. FP16 runs at the same 1:1 ratio on both, so the MI350X retains its 72.09 TFLOPS lead over 39.63 TFLOPS.

Memory is another decisive MI350X advantage. It carries 288 GB of HBM3e across an 8192-bit bus, yielding 8.19 TB/s of bandwidth. The RTX 4500 Ada Generation has 24 GB of GDDR6 on a 192-bit bus, with 432.0 GB/s. That is roughly a 19-fold difference in bandwidth, a gap that will dominate any memory-bound workload.

The RTX 4500 Ada Generation wins in areas the MI350X does not address. It has render output units at 80, while the MI350X records zero ROPs. Pixel rate for the MI350X is 0 MPixel/s, whereas the RTX 4500 Ada Generation reaches 206.4 GPixel/s. The RTX 4500 Ada Generation also includes 60 ray tracing cores and 240 tensor cores; the MI350X lists null values for both. Display outputs are present on the RTX 4500 Ada Generation (4x DisplayPort 1.4a) and absent on the MI350X. API support follows the same split: the RTX 4500 Ada Generation supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, while the MI350X lists N/A for all three.

The implied use cases are clear. The MI350X is built for compute density, memory capacity, and bandwidth, with no graphics pipeline. The RTX 4500 Ada Generation is a workstation card that can render, ray trace, and output to displays, while still offering substantial FP32 and tensor throughput.

Architecture Differences

The MI350X uses the CDNA 4.0 architecture, built on a 3 nm process at TSMC. The chip is designated MI350 256CU, reflecting 256 compute units. The RTX 4500 Ada Generation uses Ada Lovelace, built on a 5 nm process, also at TSMC. Its chip is the AD103.

Transistor counts diverge sharply. The MI350X packs 185,000 million transistors onto a die of 2380 mm², giving a transistor density of 77.7M per mm². The RTX 4500 Ada Generation has 45,900 million transistors on a 379 mm² die, achieving 121.1M per mm². The MI350X is a physically enormous chip with lower density, while the RTX 4500 Ada Generation is smaller and denser. This reflects different design goals: the MI350X maximizes raw transistor count for compute throughput, while the RTX 4500 Ada Generation integrates more functionality per transistor, including RT cores, tensor cores, and display logic.

Clock behavior also differs. The MI350X runs a base clock of 1000 MHz and boosts to 2200 MHz. The RTX 4500 Ada Generation starts at 2070 MHz base and boosts to 2580 MHz. The RTX 4500 Ada Generation has higher clocks, but the MI350X compensates with far more parallel hardware. Memory clocks are not directly comparable: the MI350X uses 2000 MHz with 8 Gbps effective, while the RTX 4500 Ada Generation uses 2250 MHz with 18 Gbps effective. The effective data rate difference is large, but the MI350X memory bus width of 8192 bit versus 192 bit dominates the bandwidth calculation.

The MI350X belongs to the Instinct (MIx) generation, with a predecessor listed as Radeon Instinct. The RTX 4500 Ada Generation belongs to the GeForce 40-series family, with a generation entry of Workstation Ada, a predecessor of Workstation Ampere, and a successor of Blackwell PRO W. The production status for the RTX 4500 Ada Generation is Active; the MI350X has no production status recorded.

Specification Differences

The two cards differ in nearly every measurable specification field.

Process node: 3 nm for the MI350X, 5 nm for the RTX 4500 Ada Generation. Transistors: 185,000 million versus 45,900 million. Die size: 2380 mm² versus 379 mm². Transistor density: 77.7M / mm² versus 121.1M / mm².

Base clock: 1000 MHz versus 2070 MHz. Boost clock: 2200 MHz versus 2580 MHz. Memory clock: 2000 MHz (8 Gbps effective) versus 2250 MHz (18 Gbps effective).

Memory size: 288 GB versus 24 GB. Memory type: HBM3e versus GDDR6. Bus width: 8192 bit versus 192 bit. Bandwidth: 8.19 TB/s versus 432.0 GB/s.

Shading units: 16,384 versus 7,680. TMUs: 1,024 versus 240. ROPs: 0 versus 80. RT cores: null versus 60. Tensor cores: null versus 240. Pixel rate: 0 MPixel/s versus 206.4 GPixel/s. Texture rate: 2,252.8 GTexel/s versus 619.2 GTexel/s. FP32: 72.09 TFLOPS versus 39.63 TFLOPS. FP16: 72.09 TFLOPS (1:1) versus 39.63 TFLOPS (1:1).

TDP: 1000 W versus 210 W. Slot width: OAM Module versus Dual-slot. Power connectors: None for both. Suggested PSU: 1400 W versus 550 W. Bus interface: PCIe 5.0 x16 versus PCIe 4.0 x16.

Display outputs: No outputs versus 4x DisplayPort 1.4a. DirectX: N/A versus 12 Ultimate (12_2). OpenGL: N/A versus 4.6. Vulkan: N/A versus 1.4.

Dimensions: the MI350X is 102 mm (4 inches) long and 165 mm (6.5 inches) wide, with no height listed. The RTX 4500 Ada Generation is 245 mm (9.6 inches) long and 112 mm (4.4 inches) tall, with no width listed.

Release dates: 2025-06-11 for the MI350X, 2023-08-08 for the RTX 4500 Ada Generation. The MI350X has no launch MSRP recorded, and neither does the RTX 4500 Ada Generation, so no price information appears in this analysis.

FAQ

Q: Which card has more FP32 compute throughput?

A: The AMD Instinct MI350X delivers 72.09 TFLOPS FP32, while the NVIDIA RTX 4500 Ada Generation provides 39.63 TFLOPS. The MI350X is ahead by roughly 82%.

Q: How do the memory systems compare?

A: The MI350X has 288 GB of HBM3e on an 8192-bit bus with 8.19 TB/s bandwidth. The RTX 4500 Ada Generation has 24 GB of GDDR6 on a 192-bit bus with 432.0 GB/s. The MI350X offers nearly 19 times the bandwidth.

Q: Does the MI350X support ray tracing?

A: No. The MI350X lists null for RT cores, while the RTX 4500 Ada Generation includes 60 RT cores. The MI350X also has zero ROPs and a pixel rate of 0 MPixel/s, indicating no rasterization capability.

Q: What is the percentile ranking of each card in the database?

A: The RTX 4500 Ada Generation ranks at the 97th percentile among all GPUs, with an average benchmark score of 166,094. The MI350X ranks at the 50th percentile, with an average benchmark score of 0 due to having no recorded benchmarks.

Q: Which card is more power-efficient based on the data?

A: The RTX 4500 Ada Generation has a TDP of 210 W and a suggested PSU of 550 W. The MI350X has a TDP of 1000 W and a suggested PSU of 1400 W. Per watt, the RTX 4500 Ada Generation delivers 39.63 TFLOPS / 210 W, while the MI350X delivers 72.09 TFLOPS / 1000 W. The RTX 4500 Ada Generation has the higher efficiency ratio.

Q: What is the release timing for each card?

A: The MI350X was released on 2025-06-11. The RTX 4500 Ada Generation was released on 2023-08-08. The RTX 4500 Ada Generation is marked as Active in production status, while the MI350X has no production status recorded.

The Verdict

The data indicates two different product categories. The AMD Instinct MI350X is a compute accelerator with no display output, no graphics API support, zero ROPs, and no RT or tensor cores. Its strengths are memory capacity, memory bandwidth, and raw FP32/FP16 throughput. The NVIDIA RTX 4500 Ada Generation is a workstation GPU with display outputs, full graphics API support, 80 ROPs, 60 RT cores, and 240 tensor cores, at a fraction of the power draw.

For workloads that require rendering, ray tracing, or display output, the RTX 4500 Ada Generation is the only option between the two. Its 97th percentile ranking and benchmark scores of 160,786 (OpenCL) and 171,401 (Vulkan) confirm it performs well against its nearest rivals, all within roughly 2% of its average score.

For compute-intensive tasks that fit in a single address space, the MI350X offers 288 GB of HBM3e and 8.19 TB/s bandwidth, far beyond the RTX 4500 Ada Generation's 24 GB and 432.0 GB/s. Its 72.09 TFLOPS FP32 output is nearly double, and its 16,384 shading units provide massive parallel throughput. The absence of benchmark data means its real-world performance is unverified in this database, but the specifications point to a card built for scale, not for graphics.

The RTX 4500 Ada Generation is the safer choice for general workstation use. The MI350X is a specialized instrument for memory-bound and throughput-bound compute, requiring a 1400 W PSU and an OAM module slot. The recorded data does not place them in direct competition. Each card wins in the domains where its feature set applies.