AMD Radeon Instinct MI300 vs NVIDIA GeForce RTX 5070 Mobile Comparison

The Verdict

The database comparison between the AMD Radeon Instinct MI300 and the NVIDIA GeForce RTX 5070 Mobile reveals two fundamentally different products serving entirely different deployment scenarios. The MI300 is a data center accelerator with no display outputs, a 600 W power envelope, and 128 GB of HBM3 memory, while the RTX 5070 Mobile is an integrated laptop GPU with a 50 W power draw and 8 GB of GDDR7 memory. The recorded data shows the MI300 leads decisively in raw compute throughput, memory capacity, and bandwidth, but the RTX 5070 Mobile holds the advantage in portability, API support, and a full benchmark profile.

The MI300 should be selected for compute-heavy workloads where massive memory pools and extreme FP32 or FP16 throughput matter more than physical size or power consumption. The RTX 5070 Mobile is the choice for mobile systems requiring DirectX 12 Ultimate support, Vulkan 1.4, and OpenGL 4.6, where the MI300 offers no API compatibility at all. The RTX 5070 Mobile also carries an active production status and a later release date, while the MI300 has no production status recorded. Benchmark data exists only for the RTX 5070 Mobile, with an average score of 29928 and a percentile ranking of 75 across all GPUs, whereas the MI300 has no recorded benchmarks and sits at the 50th percentile. The verdict is clear: pick the MI300 for raw accelerator-class number crunching, pick the RTX 5070 Mobile for any system that needs to run graphics APIs, render to a display, or operate within a laptop power budget.

Architecture Differences

The MI300 uses the Aqua Vanjaram chip built on CDNA 3.0 architecture, fabricated on a 5 nm TSMC process. It integrates 153,000 million transistors across a 1017 mm² die, yielding a transistor density of 150.4M per mm². The RTX 5070 Mobile uses the GB206 chip on Blackwell 2.0 architecture, also fabricated on a 5 nm TSMC process, but with 21,900 million transistors on a 181 mm² die, giving a density of 121.0M per mm². The MI300 packs roughly seven times the transistor count and over five times the die area.

The MI300 has 14,080 shading units, 880 texture mapping units, and zero ROPs, which aligns with its lack of display outputs. Its pixel rate is recorded as 0 MPixel/s, confirming it is not designed for rasterization to a screen. The RTX 5070 Mobile has 4,608 shading units, 144 TMUs, and 48 ROPs, with a pixel rate of 68.40 GPixel/s and a texture rate of 205.2 GTexel/s. The MI300 also includes 36 RT cores and 144 tensor cores on the RTX 5070 Mobile, while the MI300 lists no RT cores and no tensor cores in the database. The MI300’s FP16 performance is 383.0 TFLOPS using an 8:1 ratio, while the RTX 5070 Mobile delivers 13.13 TFLOPS at a 1:1 ratio. The MI300’s FP32 throughput is 47.87 TFLOPS versus 13.13 TFLOPS for the RTX 5070 Mobile.

Memory architecture also diverges sharply. The MI300 uses 128 GB of HBM3 across an 8192-bit bus, producing 6.55 TB/s of bandwidth. The RTX 5070 Mobile uses 8 GB of GDDR7 across a 128-bit bus, yielding 384.0 GB/s. The MI300’s memory clock is 1600 MHz with 6.4 Gbps effective, while the RTX 5070 Mobile runs at 1500 MHz with 24 Gbps effective. The MI300 has a base clock of 1000 MHz and a boost of 1700 MHz, while the RTX 5070 Mobile has a base of 907 MHz and a boost of 1425 MHz.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark entries between these two parts. However, the RTX 5070 Mobile has a full suite of recorded scores, and the MI300 has none. The RTX 5070 Mobile’s Geekbench OpenCL score is 122238, and its Vulkan score is 116960. PassMark results include DirectX 10 at 129, DirectX 11 at 192, DirectX 12 at 93, DirectX 9 at 214, G2D at 896, G3D at 20355, and GPU compute at 8279. The average benchmark score for the RTX 5070 Mobile is 29928, placing it in the 75th percentile of all GPUs.

The MI300’s average benchmark score is 0, and its percentile is 50, indicating the database has no performance measurements for it. This absence is notable: the MI300’s compute capabilities are described through its specification data, not through benchmark runs. The texture rate of the MI300 is 1,496.0 GTexel/s, which is over seven times the RTX 5070 Mobile’s 205.2 GTexel/s. The FP32 and FP16 figures similarly show a large gap in favor of the MI300. The RTX 5070 Mobile’s nearest rivals in the database are the NVIDIA GeForce RTX 3070 Ti with an average score of 29945 and a delta of -0.1%, the RTX 2080 Ti at 29783 with a delta of 0.5%, the AMD Radeon RX 6800 at 30095 with a delta of -0.6%, and the AMD Radeon RX 6700 at 30433 with a delta of -1.7%. These deltas show the RTX 5070 Mobile performs within 1.7% of those desktop-class GPUs, essentially matching the RTX 3070 Ti and sitting slightly below the RX 6700.

FAQ

Q: Which GPU has higher FP32 compute performance?

A: The AMD Radeon Instinct MI300 delivers 47.87 TFLOPS of FP32, while the NVIDIA GeForce RTX 5070 Mobile delivers 13.13 TFLOPS. The MI300 is roughly 3.6 times faster in this metric.

Q: Does either GPU support DirectX or Vulkan?

A: Only the RTX 5070 Mobile has API support recorded. It supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI300 lists no DirectX, OpenGL, or Vulkan support.

Q: What is the memory capacity difference?

A: The MI300 has 128 GB of HBM3 memory, while the RTX 5070 Mobile has 8 GB of GDDR7. The MI300 also has a much wider 8192-bit bus versus 128-bit, and its bandwidth of 6.55 TB/s is over 17 times the RTX 5070 Mobile’s 384.0 GB/s.

Q: Which GPU has a higher transistor count?

A: The MI300 has 153,000 million transistors, while the RTX 5070 Mobile has 21,900 million. The MI300 also uses a larger die at 1017 mm² versus 181 mm².

Q: What is the power consumption difference?

A: The MI300 has a TDP of 600 W and requires a 1000 W suggested PSU with two 8-pin power connectors. The RTX 5070 Mobile has a TDP of 50 W and uses no power connectors, fitting an integrated form factor.

Q: Does the RTX 5070 Mobile have any benchmark rivals?

A: Yes. Its nearest rivals include the RTX 3070 Ti (delta -0.1%), RTX 2080 Ti (delta 0.5%), RX 6800 (delta -0.6%), and RX 6700 (delta -1.7%). Its average score of 29928 is within 1.7% of all four.

Where Each One Wins

The MI300 wins decisively in compute throughput. Its FP32 of 47.87 TFLOPS is 3.6 times the RTX 5070 Mobile’s 13.13 TFLOPS. Its FP16 of 383.0 TFLOPS is roughly 29 times the RTX 5070 Mobile’s 13.13 TFLOPS. The texture rate of 1,496.0 GTexel/s is over seven times higher. Memory capacity of 128 GB versus 8 GB gives the MI300 a 16-fold advantage, and bandwidth of 6.55 TB/s versus 384.0 GB/s is an order-of-magnitude lead. The MI300 also has a larger die (1017 mm² versus 181 mm²), more transistors (153,000 million versus 21,900 million), and a higher transistor density (150.4M per mm² versus 121.0M per mm²).

The RTX 5070 Mobile wins in every area that requires a functional graphics pipeline. It has 48 ROPs and a pixel rate of 68.40 GPixel/s, while the MI300 has zero ROPs and 0 MPixel/s. The RTX 5070 Mobile supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, while the MI300 supports none of these. The RTX 5070 Mobile has 36 RT cores and 144 tensor cores, features absent from the MI300’s specification. The RTX 5070 Mobile consumes 50 W versus 600 W, a 12-fold reduction in power draw, and needs no external power connectors. It has an active production status, whereas the MI300 has none recorded. The RTX 5070 Mobile also has a complete benchmark profile with an average score of 29928 and a 75th percentile ranking, while the MI300 has no benchmarks and a 50th percentile.

Specification Differences

The two GPUs differ across nearly every recorded field. The MI300 uses CDNA 3.0 architecture with the Aqua Vanjaram chip, while the RTX 5070 Mobile uses Blackwell 2.0 with the GB206 chip. Both are 5 nm TSMC parts, but the MI300 has 153,000 million transistors versus 21,900 million, and a die size of 1017 mm² versus 181 mm². Transistor density is 150.4M per mm² for the MI300 and 121.0M per mm² for the RTX 5070 Mobile.

Clock speeds differ: MI300 base is 1000 MHz and boost is 1700 MHz; RTX 5070 Mobile base is 907 MHz and boost is 1425 MHz. Memory clocks are 1600 MHz with 6.4 Gbps effective for the MI300, and 1500 MHz with 24 Gbps effective for the RTX 5070 Mobile. Memory configuration: 128 GB HBM3 on an 8192-bit bus with 6.55 TB/s bandwidth versus 8 GB GDDR7 on a 128-bit bus with 384.0 GB/s.

Shader resources: the MI300 has 14,080 shading units, 880 TMUs, and 0 ROPs; the RTX 5070 Mobile has 4,608 shading units, 144 TMUs, and 48 ROPs. The RTX 5070 Mobile has 36 RT cores and 144 tensor cores; the MI300 has none listed. Pixel rate is 0 MPixel/s for the MI300 and 68.40 GPixel/s for the RTX 5070 Mobile. Texture rate is 1,496.0 GTexel/s versus 205.2 GTexel/s. FP32 is 47.87 TFLOPS versus 13.13 TFLOPS. FP16 is 383.0 TFLOPS (8:1) versus 13.13 TFLOPS (1:1).

Power and physical specs: the MI300 has a 600 W TDP, a 1000 W suggested PSU, and 2x 8-pin power connectors; the RTX 5070 Mobile has a 50 W TDP, no power connectors, and an IGP slot width. The MI300 has no display outputs, while the RTX 5070 Mobile has portable device dependent outputs. The MI300 measures 267 mm in length and 111 mm in height; the RTX 5070 Mobile has no dimensions recorded. Both use PCIe 5.0 x16. The MI300 released on 2023-01-03, and the RTX 5070 Mobile on 2025-04-14. The MI300’s predecessor is FirePro Data Center, while the RTX 5070 Mobile’s predecessor is GeForce 40 Mobile. The RTX 5070 Mobile has an active production status; the MI300 has none. The MI300 has no launch MSRP, and neither does the RTX 5070 Mobile. The RTX 5070 Mobile’s series is GeForce 50-series, while the MI300’s series is null. The MI300’s generation is Radeon Instinct (MIx), and the RTX 5070 Mobile’s generation is GeForce 50 Mobile.