AMD Radeon Instinct MI60 vs AMD Radeon RX 6950 XT Comparison

Head-to-Head Benchmarks

The recorded head-to-head data shows the AMD Radeon RX 6950 XT winning both shared tests decisively. In Geekbench OpenCL, the RX 6950 XT scores 205,998 against the Instinct MI60's 92,488, a 55.1% advantage. That is not a marginal gap; it is a dominant margin in raw compute throughput as measured by this workload. The Geekbench Vulkan result tells the same story: 165,212 for the RX 6950 XT versus 92,444 for the MI60, a 44% lead. The database records zero wins for the Instinct MI60 across the overlapping benchmark suite, meaning every directly comparable test favors the newer consumer card.

These deltas are large enough to reshape expectations. The MI60's percentile rank of 93 versus the RX 6950 XT's 88 might suggest the opposite conclusion, but that percentile reflects each card's standing across all GPUs in the database, not their performance in these two shared tests. The RX 6950 XT's average benchmark score of 58,392 is dragged down by its inclusion of many additional tests, including Passmark DirectX 9, 10, 11, and 12 results, which are not present for the MI60. The MI60's average of 92,466 comes from only two Geekbench runs. When comparing the two directly on identical workloads, the RX 6950 XT is clearly faster.

The RX 6950 XT also has a much broader benchmark footprint in the database. It shows strong numbers across different API generations: Passmark G3D at 28,070, Passmark GPU Compute at 14,199, and Geekbench Metal at 222,653. The MI60 has no recorded Metal, DirectX, or Passmark scores, so its measured capabilities are limited to OpenCL and Vulkan. This matters for practical advice: if a workload relies on DirectX 12 or Metal, the MI60 has no database evidence to support it, while the RX 6950 XT has verified results in those categories.

Architecture Differences

The two GPUs come from different architectural lineages. The MI60 uses the Vega 20 chip built on GCN 5.1, while the RX 6950 XT uses the Navi 21 chip built on RDNA 2.0. Both are manufactured on TSMC's 7 nm process, but that is where the silicon similarities end. The MI60 packs 13,230 million transistors on a 331 mm² die, giving a transistor density of 40.0M per mm². The RX 6950 XT packs 26,800 million transistors on a 520 mm² die, for a density of 51.5M per mm². The RX 6950 XT is not just larger; it is denser, which indicates a more modern design that fits more logic into the same process node.

The memory subsystems are fundamentally different. The MI60 uses 32 GB of HBM2 on a 4096-bit bus, delivering 1.02 TB/s of bandwidth. The RX 6950 XT uses 16 GB of GDDR6 on a 256-bit bus, delivering 576.0 GB/s. The MI60 has nearly double the capacity and 77% more bandwidth. That is a massive advantage for memory-bound compute workloads, even though the RX 6950 XT wins in raw shader throughput. The MI60's memory clock is listed at 1000 MHz with 2 Gbps effective, while the RX 6950 XT's memory runs at 2250 MHz with 18 Gbps effective, but the bus width difference dominates the bandwidth calculation.

Core counts and compute resources also diverge. The MI60 has 4096 shading units, 256 TMUs, and 64 ROPs. The RX 6950 XT has 5120 shading units, 320 TMUs, and 128 ROPs. The RX 6950 XT also features 80 ray accelerators (listed as RT cores), while the MI60 has none. That means the RX 6950 XT supports hardware-accelerated ray tracing, a feature entirely absent from the MI60. The MI60's pixel rate is 115.2 GPixel/s, and its texture rate is 460.8 GTexel/s. The RX 6950 XT's pixel rate is 295.7 GPixel/s, and its texture rate is 739.2 GTexel/s. In every rasterization metric, the RX 6950 XT is ahead by a wide margin.

Compute throughput follows the same pattern. The MI60 delivers 14.75 TFLOPS FP32 and 29.49 TFLOPS FP16 (2:1). The RX 6950 XT delivers 23.65 TFLOPS FP32 and 47.31 TFLOPS FP16 (2:1). That is roughly 60% more FP32 and FP16 performance for the RX 6950 XT. The MI60 does have one unique advantage: its FP16 is listed as 2:1, which implies a dedicated path for half-precision, but the RX 6950 XT also lists FP16 at 2:1, so both cards offer the same ratio.

API support differs as well. The MI60 supports DirectX 12 (12_1), OpenGL 4.6, and Vulkan 1.3. The RX 6950 XT supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The RX 6950 XT's higher DirectX feature level and newer Vulkan version reflect its newer architecture. The RX 6950 XT also has more display outputs: one HDMI 2.1 and two DisplayPort 1.4a, versus a single mini-DisplayPort 1.4a on the MI60.

FAQ

Q: Which card is faster in Geekbench OpenCL?

A: The RX 6950 XT scores 205,998 versus the MI60's 92,488, a 55.1% advantage.

Q: Does the MI60 have any benchmark win over the RX 6950 XT?

A: No. In the database's head-to-head tests, the MI60 records zero wins; the RX 6950 XT wins both Geekbench OpenCL and Vulkan.

Q: Which card has more memory bandwidth?

A: The MI60 has 1.02 TB/s from 32 GB of HBM2 on a 4096-bit bus, while the RX 6950 XT has 576.0 GB/s from 16 GB of GDDR6 on a 256-bit bus.

Q: Does the RX 6950 XT support ray tracing?

A: Yes, it has 80 RT cores. The MI60 has no RT cores, so it does not support hardware ray tracing.

Q: What is the power draw difference?

A: The MI60 has a TDP of 300 W, and the RX 6950 XT has a TDP of 335 W. Both cards recommend a 700 W power supply.

Q: Which card is larger?

A: Both are 267 mm long. The MI60 is 111 mm tall and dual-slot; the RX 6950 XT is 120 mm tall, 50 mm wide, and triple-slot.

Specification Differences

| Specification | AMD Radeon Instinct MI60 | AMD Radeon RX 6950 XT |

|---|---|---|

| Chip | Vega 20 | Navi 21 |

| Architecture | GCN 5.1 | RDNA 2.0 |

| Transistors | 13,230 million | 26,800 million |

| Die size | 331 mm² | 520 mm² |

| Transistor density | 40.0M / mm² | 51.5M / mm² |

| Base clock | 1200 MHz | 1860 MHz |

| Boost clock | 1800 MHz | 2310 MHz |

| Game clock | None listed | 2100 MHz |

| Memory clock | 1000 MHz (2 Gbps effective) | 2250 MHz (18 Gbps effective) |

| Memory size | 32 GB | 16 GB |

| Memory type | HBM2 | GDDR6 |

| Memory bus width | 4096 bit | 256 bit |

| Memory bandwidth | 1.02 TB/s | 576.0 GB/s |

| Shading units | 4096 | 5120 |

| TMUs | 256 | 320 |

| ROPs | 64 | 128 |

| RT cores | None | 80 |

| Pixel rate | 115.2 GPixel/s | 295.7 GPixel/s |

| Texture rate | 460.8 GTexel/s | 739.2 GTexel/s |

| FP32 | 14.75 TFLOPS | 23.65 TFLOPS |

| FP16 | 29.49 TFLOPS | 47.31 TFLOPS |

| TDP | 300 W | 335 W |

| Slot width | Dual-slot | Triple-slot |

| Power connectors | 1x 6-pin + 1x 8-pin | 2x 8-pin |

| Display outputs | 1x mini-DisplayPort 1.4a | 1x HDMI 2.1, 2x DisplayPort 1.4a |

| DirectX | 12 (12_1) | 12 Ultimate (12_2) |

| Vulkan | 1.3 | 1.4 |

| Dimensions | 267 mm x 111 mm | 267 mm x 120 mm x 50 mm |

| Release date | 2018-11-17 | 2022-05-09 |

| Launch MSRP | None listed | 1,099 USD |

Where Each One Wins

The RX 6950 XT wins in every shared benchmark, and its architectural specs align with those results. It has more shading units (5120 vs 4096), more TMUs (320 vs 256), double the ROPs (128 vs 64), and much higher clock speeds (boost 2310 MHz vs 1800 MHz). It is the clear choice for any workload that relies on raw shader throughput, rasterization, or ray tracing. The database shows it winning Geekbench OpenCL by 55.1% and Geekbench Vulkan by 44%, so for gaming, DirectX 12 applications, or general GPU compute like video encoding or physics simulation, the RX 6950 XT is the stronger performer.

The MI60 wins in memory capacity and bandwidth. With 32 GB of HBM2 and 1.02 TB/s, it offers more than double the capacity and 77% more bandwidth than the RX 6950 XT's 16 GB and 576.0 GB/s. That makes it the better fit for large datasets that exceed 16 GB, such as certain machine learning inference batches, scientific computing, or rendering scenes with massive textures. The MI60's 4096-bit bus is a legacy advantage that the RX 6950 XT cannot match, even with faster GDDR6 clocks. For workloads where the data fits in memory and bandwidth is the bottleneck, the MI60's memory subsystem could provide a tangible benefit.

The RX 6950 XT also wins on feature support. It has DirectX 12 Ultimate (12_2) versus DirectX 12 (12_1), Vulkan 1.4 versus 1.3, and it includes hardware ray tracing. It also has more display outputs, including HDMI 2.1, which matters for connecting to modern displays. The MI60's single mini-DisplayPort limits its use as a display adapter, though that is not its intended role.

The MI60's lower TDP of 300 W versus 335 W is a small efficiency win, but both cards recommend a 700 W power supply, so that difference rarely changes a build decision.

The Verdict

The data is unambiguous for most use cases. The RX 6950 XT is the faster card in every directly measured benchmark, with a 55.1% lead in OpenCL and a 44% lead in Vulkan. It also has higher pixel and texture rates, more compute units, and hardware ray tracing. For a gamer, a workstation user running DirectX applications, or anyone who needs maximum shader performance per dollar, the RX 6950 XT is the pick. The launch MSRP of 1,099 USD reflects its consumer positioning, and its end-of-life status means it is a mature product with known performance.

The MI60 is not without purpose. Its 32 GB of HBM2 memory with 1.02 TB/s bandwidth is a specialized asset. If a workload needs more than 16 GB of GPU memory, the RX 6950 XT simply cannot run it, regardless of its compute lead. The MI60's GCN 5.1 architecture is older and lacks ray tracing, but its memory subsystem is built for data-center style compute. The database shows it at a 93rd percentile rank, which is higher than the RX 6950 XT's 88th, but that rank is based on a limited benchmark set.

Choose the RX 6950 XT for general performance, gaming, DirectX 12 Ultimate features, or ray tracing. Choose the MI60 for memory-bound tasks that require more than 16 GB of VRAM or that benefit from HBM2 bandwidth. For everything else, the RX 6950 XT is the measured winner. If you must pick one card for a broad workload mix, the RX 6950 XT's dominant benchmark wins and modern feature set make it the safer recommendation.