AMD Instinct MI308X vs NVIDIA GeForce RTX 4070 AD103 Comparison

Where Each One Wins

The AMD Instinct MI308X and NVIDIA GeForce RTX 4070 AD103 occupy entirely separate performance domains, and the recorded data makes the split unambiguous. The MI308X is a compute accelerator built for scale: it carries 192 GB of HBM3 memory on an 8192-bit bus, delivering 5.32 TB/s of bandwidth. That memory subsystem alone places it in a category where the RTX 4070 AD103 cannot compete, as the latter uses 12 GB of GDDR6X on a 192-bit bus for 504.2 GB/s. Any workload that depends on holding large datasets close to the compute units, or that streams data at extreme rates, will favor the MI308X by an order of magnitude in capacity and roughly ten times in bandwidth.

The MI308X also wins decisively in raw compute throughput. Its FP32 rating is 81.72 TFLOPS, and its FP16 rating is identical at 81.72 TFLOPS (1:1). The RTX 4070 AD103 delivers 29.15 TFLOPS in both FP32 and FP16. That means the MI308X has roughly 2.8 times the floating-point throughput in both precisions. For scientific simulation, AI training, or any dense linear algebra workload, the MI308X is the stronger choice. Its texture rate of 2,553.6 GTexel/s versus 455.4 GTexel/s for the RTX 4070 AD103 further confirms its dominance in fill-rate-heavy compute tasks.

The RTX 4070 AD103 wins in the consumer and workstation feature space. It has dedicated ray tracing cores (46) and tensor cores (184), which the MI308X does not list at all. It supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, while the MI308X reports N/A for all three APIs. The RTX 4070 AD103 also has display outputs (1x HDMI 2.1, 3x DisplayPort 1.4a), whereas the MI308X has no outputs. For any workload that requires rendering, ray tracing, or driving a display, the RTX 4070 AD103 is the only viable option between the two.

The RTX 4070 AD103 also wins on efficiency in a practical sense. Its TDP is 200 W against 750 W for the MI308X, and its suggested PSU is 550 W versus 1150 W. The RTX 4070 AD103 fits in a dual-slot form factor with a 240 mm length, while the MI308X is an OAM Module with no dimensions listed. The RTX 4070 AD103 uses a single 16-pin power connector, whereas the MI308X lists no power connectors at all, indicating it is designed for a server chassis with dedicated power delivery. In short, the MI308X wins on compute and memory scale, the RTX 4070 AD103 wins on feature set, connectivity, and deployability.

Architecture Differences

The two GPUs come from different architectural lineages. The MI308X uses CDNA 3.0 architecture on the Aqua Vanjaram chip, while the RTX 4070 AD103 uses Ada Lovelace on the AD103 chip. Both are built on a 5 nm process at TSMC, but the transistor counts differ enormously. The MI308X has 153,000 million transistors on a 1017 mm² die, giving a transistor density of 150.4M per mm². The RTX 4070 AD103 has 45,900 million transistors on a 379 mm² die, for a density of 121.1M per mm². The MI308X is a much larger and denser chip, reflecting its role as a data center accelerator.

The shading unit counts also diverge sharply. The MI308X has 19,456 shading units and 1,216 TMUs, but it has 0 ROPs and a pixel rate of 0 MPixel/s. That is a compute-focused design with no rasterization pipeline. The RTX 4070 AD103 has 5,888 shading units, 184 TMUs, and 64 ROPs, with a pixel rate of 158.4 GPixel/s. The RTX 4070 AD103 is a full graphics processor, while the MI308X is intentionally missing the output stage.

Clock behavior differs as well. The MI308X has a base clock of 1000 MHz and a boost clock of 2100 MHz. The RTX 4070 AD103 has a base clock of 1920 MHz and a boost clock of 2475 MHz. The RTX 4070 AD103 runs at higher frequencies, but the MI308X compensates with far more compute units.

Memory architecture is where the gap is widest. The MI308X uses HBM3 with 192 GB capacity and an 8192-bit bus, producing 5.32 TB/s bandwidth. The RTX 4070 AD103 uses GDDR6X with 12 GB capacity and a 192-bit bus, producing 504.2 GB/s. The MI308X has 16 times the memory capacity and more than 10 times the bandwidth. The memory clock for the MI308X is listed as 1300 MHz (5.2 Gbps effective), while the RTX 4070 AD103 runs at 1313 MHz (21 Gbps effective). The RTX 4070 AD103's memory clock is higher in effective transfer rate per pin, but the MI308X's massively wider bus overwhelms that advantage.

The MI308X uses a PCIe 5.0 x16 interface, while the RTX 4070 AD103 uses PCIe 4.0 x16. The MI308X has no display outputs, no power connectors, and an OAM Module slot width. The RTX 4070 AD103 is a dual-slot card with one 16-pin connector and a standard set of display outputs. The MI308X reports N/A for DirectX, OpenGL, and Vulkan, while the RTX 4070 AD103 supports all three with modern versions. These differences reflect fundamentally different product categories: the MI308X is a server accelerator, the RTX 4070 AD103 is a consumer graphics card.

Head-to-Head Benchmarks

The head-to-head benchmark data contains no recorded entries, and the win counts for both parts are zero. That means the database has no direct comparative measurements between the MI308X and the RTX 4070 AD103. However, the recorded specifications allow for a clear quantitative comparison on several axes.

The largest advantage for the MI308X is memory bandwidth. At 5.32 TB/s versus 504.2 GB/s, the MI308X has roughly 10.5 times the memory bandwidth of the RTX 4070 AD103. In memory capacity, the MI308X has 192 GB versus 12 GB, which is 16 times more. These are the most striking deltas in the dataset.

In compute throughput, the MI308X delivers 81.72 TFLOPS FP32 and FP16, versus 29.15 TFLOPS for the RTX 4070 AD103 in both precisions. That is approximately 2.8 times the throughput. The texture rate comparison is even more lopsided: 2,553.6 GTexel/s versus 455.4 GTexel/s, which is about 5.6 times higher for the MI308X.

The RTX 4070 AD103 wins in pixel rate, where it has 158.4 GPixel/s, while the MI308X has 0 MPixel/s. It also wins in clock speeds, with a boost clock of 2475 MHz versus 2100 MHz for the MI308X. The RTX 4070 AD103 has a higher base clock too, at 1920 MHz versus 1000 MHz.

In transistor density, the MI308X leads at 150.4M per mm² versus 121.1M per mm² for the RTX 4070 AD103. The MI308X also has a larger die at 1017 mm² versus 379 mm², and more transistors overall at 153,000 million versus 45,900 million.

The RTX 4070 AD103 has dedicated ray tracing cores (46) and tensor cores (184), which the MI308X does not list. The RTX 4070 AD103 also has a full API support set, while the MI308X reports N/A for DirectX, OpenGL, and Vulkan. These are functional wins for the RTX 4070 AD103 that no raw compute number can offset.

Specification Differences

The two GPUs differ across nearly every specification field. The MI308X uses CDNA 3.0 architecture, while the RTX 4070 AD103 uses Ada Lovelace. The MI308X has 153,000 million transistors on a 1017 mm² die, while the RTX 4070 AD103 has 45,900 million transistors on a 379 mm² die. Transistor density is 150.4M per mm² for the MI308X and 121.1M per mm² for the RTX 4070 AD103.

Clocks differ: the MI308X has a base of 1000 MHz and a boost of 2100 MHz, while the RTX 4070 AD103 has a base of 1920 MHz and a boost of 2475 MHz. Memory clocks are 1300 MHz (5.2 Gbps effective) for the MI308X and 1313 MHz (21 Gbps effective) for the RTX 4070 AD103.

Memory is the largest gap. The MI308X has 192 GB of HBM3 on an 8192-bit bus with 5.32 TB/s bandwidth. The RTX 4070 AD103 has 12 GB of GDDR6X on a 192-bit bus with 504.2 GB/s bandwidth.

Compute unit counts: the MI308X has 19,456 shading units, 1,216 TMUs, and 0 ROPs. The RTX 4070 AD103 has 5,888 shading units, 184 TMUs, and 64 ROPs. The MI308X has a pixel rate of 0 MPixel/s and a texture rate of 2,553.6 GTexel/s. The RTX 4070 AD103 has a pixel rate of 158.4 GPixel/s and a texture rate of 455.4 GTexel/s.

FP32 and FP16 throughput are 81.72 TFLOPS for the MI308X and 29.15 TFLOPS for the RTX 4070 AD103, both at 1:1 ratios. The MI308X has no listed ray tracing cores or tensor cores, while the RTX 4070 AD103 has 46 RT cores and 184 tensor cores.

Power and form factor: the MI308X has a TDP of 750 W and a suggested PSU of 1150 W, with an OAM Module slot width and no power connectors. The RTX 4070 AD103 has a TDP of 200 W and a suggested PSU of 550 W, with a dual-slot form factor and one 16-pin connector. The MI308X measures no listed dimensions; the RTX 4070 AD103 is 240 mm long, 110 mm high, and 40 mm wide.

Interface and outputs: the MI308X uses PCIe 5.0 x16 and has no display outputs. The RTX 4070 AD103 uses PCIe 4.0 x16 and has 1x HDMI 2.1 and 3x DisplayPort 1.4a. API support: the MI308X reports N/A for DirectX, OpenGL, and Vulkan; the RTX 4070 AD103 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Release dates differ: the MI308X launched on 2023-12-05, while the RTX 4070 AD103 launched on 2024-02-29. The MI308X has a predecessor of Radeon Instinct, while the RTX 4070 AD103 has a predecessor of GeForce 30 and a successor of GeForce 50. The RTX 4070 AD103 is marked end-of-life in production status, and its launch MSRP is 599 USD.

FAQ

Q: Which GPU has more memory bandwidth?

A: The AMD Instinct MI308X has 5.32 TB/s of memory bandwidth, while the NVIDIA GeForce RTX 4070 AD103 has 504.2 GB/s. The MI308X has more than 10 times the bandwidth.

Q: Does the MI308X support ray tracing?

A: No, the MI308X does not list any ray tracing cores. The RTX 4070 AD103 has 46 ray tracing cores.

Q: What is the FP32 performance difference?

A: The MI308X delivers 81.72 TFLOPS of FP32, while the RTX 4070 AD103 delivers 29.15 TFLOPS. The MI308X has roughly 2.8 times the FP32 throughput.

Q: Can the MI308X drive a display?

A: No, the MI308X has no display outputs. The RTX 4070 AD103 has 1x HDMI 2.1 and 3x DisplayPort 1.4a.

Q: What is the memory capacity of each GPU?

A: The MI308X has 192 GB of HBM3 memory, while the RTX 4070 AD103 has 12 GB of GDDR6X memory.

Q: Which GPU has a higher boost clock?

A: The RTX 4070 AD103 has a boost clock of 2475 MHz, while the MI308X has a boost clock of 2100 MHz.

The Verdict

The AMD Instinct MI308X is the choice for compute-heavy workloads that demand massive memory capacity and bandwidth. Its 192 GB of HBM3, 5.32 TB/s bandwidth, and 81.72 TFLOPS FP32/FP16 throughput put it in a different class from the RTX 4070 AD103. The data shows that the MI308X has 16 times the memory capacity, over 10 times the bandwidth, and roughly 2.8 times the floating-point performance. It also has a wider PCIe interface (5.0 x16 versus 4.0 x16) and a much larger transistor budget. Its 750 W TDP and OAM Module form factor in a server context are consistent with its design purpose.

The NVIDIA GeForce RTX 4070 AD103 is the choice for any workload that requires graphics output, ray tracing, or standard consumer APIs. It has 46 ray tracing cores, 184 tensor cores, support for DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, and a full set of display outputs. Its 158.4 GPixel/s pixel rate and 64 ROPs confirm it is a complete rasterizer, which the MI308X is not. The RTX 4070 AD103 also runs at higher clocks, fits in a dual-slot 240 mm card, and draws 200 W with a 550 W suggested PSU, making it deployable in a standard desktop system.

The two GPUs are not competitors in any meaningful sense. The MI308X is a server accelerator with no display path and no consumer API support. The RTX 4070 AD103 is a consumer graphics card with full rendering capabilities. The recorded data assigns both a 50th percentile rank against all GPUs, but that percentile does not reflect their divergent feature sets. The verdict from the specifications is straightforward: for compute and memory scale, the MI308X; for graphics, ray tracing, and standard system integration, the RTX 4070 AD103.