AMD Radeon RX 6600 LE vs NVIDIA H20 Comparison

Head-to-Head Benchmarks

The recorded data presents an unusual comparison. The AMD Radeon RX 6600 LE has benchmark scores, while the NVIDIA H20 has none. The database shows the RX 6600 LE achieving 69,229 points in Geekbench OpenCL and 72,428 points in Geekbench Vulkan. Its average benchmark score sits at 70,829. The H20 has an average benchmark score of 0, with an empty benchmark list.

This asymmetry defines the entire comparison. The RX 6600 LE ranks in the 91st percentile among all GPUs tracked in the database. The H20 ranks in the 50th percentile, which reflects its lack of recorded benchmark results rather than a measured performance level. The wins count confirms this: the RX 6600 LE holds 0 wins and the H20 holds 0 wins, because no head-to-head benchmark entries exist.

The RX 6600 LE's nearest rivals provide context for its standing. The AMD Radeon RX 6650M averages 71,768 points, which is 1.3% ahead of the RX 6600 LE. The NVIDIA RTX A3000 Mobile averages 70,140 points, 1% behind. The NVIDIA Quadro P6000 averages 69,986 points, 1.2% behind. The AMD Radeon Pro WX 8200 averages 69,870 points, 1.4% behind. These margins are tight, indicating the RX 6600 LE sits in a competitive cluster.

Without any recorded scores for the H20, no direct percentage comparisons can be made. The data simply does not contain a measured performance level for that accelerator. The H20's percentile rank of 50 reflects missing data, not a mid-pack performance result. Any attempt to quantify the gap between these two products would require inventing numbers, which the database does not support.

The RX 6600 LE's Vulkan score of 72,428 exceeds its OpenCL score of 69,229 by approximately 4.6%. This difference suggests the architecture responds well to the Vulkan API, though the database does not explain the cause. The average score of 70,829 sits between the two individual results, as expected.

The Verdict

The data supports only one conclusion: the RX 6600 LE has measurable benchmark results, and the H20 does not. For workloads represented by Geekbench OpenCL and Vulkan, the RX 6600 LE delivers recorded performance. The H20 has no such records, so any performance comparison is impossible.

The RX 6600 LE is a Radeon RX 6000 series product from AMD, built on the Navi 23 chip with RDNA 2.0 architecture. It targets the consumer graphics market with a 132 W TDP, dual-slot design, and a single 8-pin power connector. Its 8 GB of GDDR6 memory on a 128-bit bus provides 224.0 GB/s of bandwidth. The card uses PCIe 4.0 x8 and outputs 1x HDMI 2.1 and 3x DisplayPort 1.4a.

The H20 is a server accelerator from NVIDIA, built on the GH100 chip with Hopper architecture. It targets data center workloads with a 500 W TDP, SXM module form factor, and no display outputs. Its 96 GB of HBM3 memory on a 6144-bit bus delivers 4.03 TB/s of bandwidth. It uses PCIe 5.0 x16 and has no API support for DirectX, OpenGL, or Vulkan, which aligns with its server-oriented purpose.

The data indicates these products serve different markets. The RX 6600 LE has consumer display outputs and graphics API support. The H20 has none of those features but offers vastly more memory and bandwidth. The absence of H20 benchmarks likely reflects its target use case: server accelerators are often measured with different tools than consumer GPUs, and the database simply has no entries for it.

A user choosing between these two would face a clear data-driven situation. If they need a GPU with recorded Geekbench performance, graphics API support, and display connectivity, the RX 6600 LE is the only option with evidence. If they need a server accelerator with massive memory capacity and bandwidth, the H20 offers those specifications, but the database contains no performance measurements to validate its capabilities.

Architecture Differences

The two products use fundamentally different chip designs. The RX 6600 LE uses the Navi 23 chip manufactured on a 7 nm process at TSMC. The H20 uses the GH100 chip manufactured on a 5 nm process, also at TSMC. The process node difference gives the H20 a density advantage: 98.3 million transistors per square millimeter versus 46.7 million for the RX 6600 LE.

Transistor counts diverge sharply. The RX 6600 LE contains 11,060 million transistors on a 237 mm² die. The H20 contains 80,000 million transistors on an 814 mm² die. The H20's die is over three times larger and holds over seven times more transistors. This scale difference reflects their different purposes: a consumer graphics card versus a data center accelerator.

The RX 6600 LE uses RDNA 2.0 architecture and belongs to the Navi II generation. The H20 uses Hopper architecture and belongs to the Server Hopper generation. Their predecessors and successors also differ: the RX 6600 LE follows Navi and precedes Navi III, while the H20 follows Server Ada and precedes Server Blackwell.

Clock behavior differs as well. The RX 6600 LE has a base clock of 1626 MHz, a boost clock of 2495 MHz, and a game clock of 2045 MHz. The H20 has a base clock of 1830 MHz and a boost clock of 1980 MHz, with no game clock listed. The RX 6600 LE's boost clock runs 26% higher than its base, while the H20's boost clock runs only 8% higher. The RX 6600 LE's higher boost clock suggests it is designed for variable workloads, while the H20's tighter range suggests sustained operation.

Memory architecture could hardly be more different. The RX 6600 LE uses 8 GB of GDDR6 on a 128-bit bus, yielding 224.0 GB/s bandwidth. The H20 uses 96 GB of HBM3 on a 6144-bit bus, yielding 4.03 TB/s bandwidth. The H20 has 12 times the memory capacity and 18 times the bandwidth. The memory clock shows the technological gap: the RX 6600 LE runs at 1750 MHz with 14 Gbps effective, while the H20 runs at 1313 MHz with 5.3 Gbps effective. The HBM3's wider bus compensates for its lower clock speed.

Compute resources also differ substantially. The RX 6600 LE has 1792 shading units, 112 texture mapping units, and 64 ROPs. It includes 28 ray tracing cores and no tensor cores. The H20 has 9984 shading units, 312 texture mapping units, and 24 ROPs. It includes 312 tensor cores and no listed ray tracing cores. The H20 has over five times the shading units and nearly three times the texture units, but fewer ROPs.

Pixel and texture rates reflect these configurations. The RX 6600 LE achieves 159.7 GPixel/s and 279.4 GTexel/s. The H20 achieves 47.52 GPixel/s and 617.8 GTexel/s. The RX 6600 LE has over three times the pixel rate, while the H20 has over twice the texture rate. The H20's low pixel rate relative to its texture rate indicates a compute-oriented design rather than a rasterization-focused one.

Floating-point performance follows the compute unit counts. The RX 6600 LE delivers 8.942 TFLOPS FP32 and 17.88 TFLOPS FP16 using a 2:1 ratio. The H20 delivers 39.54 TFLOPS FP32 and 79.07 TFLOPS FP16, also at 2:1. The H20 has 4.4 times the FP32 throughput and 4.4 times the FP16 throughput. The H20's tensor cores provide additional compute capability that the RX 6600 LE lacks entirely.

Power and form factor differences are stark. The RX 6600 LE has a 132 W TDP, is dual-slot, uses a 1x 8-pin connector, and requires a 300 W suggested PSU. The H20 has a 500 W TDP, is an SXM module, lists no power connectors, and requires a 900 W suggested PSU. The H20 consumes 3.8 times the power and requires three times the PSU capacity. The SXM form factor indicates it mounts directly to a server board rather than a standard PCIe slot.

API support divides them completely. The RX 6600 LE supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The H20 lists N/A for all three. This confirms the RX 6600 LE is a client graphics product, while the H20 is a compute accelerator without graphics API responsibilities.

FAQ

Q: Does the NVIDIA H20 have any benchmark scores in the database?

A: No. The H20 has an empty benchmark list and an average benchmark score of 0. Its percentile rank of 50 reflects the absence of recorded data, not a measured performance level.

Q: How does the AMD Radeon RX 6600 LE compare to its nearest rivals?

A: The RX 6600 LE averages 70,829 points. The AMD Radeon RX 6650M is 1.3% ahead, the NVIDIA RTX A3000 Mobile is 1% behind, the NVIDIA Quadro P6000 is 1.2% behind, and the AMD Radeon Pro WX 8200 is 1.4% behind.

Q: What memory configurations do the two products use?

A: The RX 6600 LE uses 8 GB of GDDR6 on a 128-bit bus with 224.0 GB/s bandwidth. The H20 uses 96 GB of HBM3 on a 6144-bit bus with 4.03 TB/s bandwidth.

Q: Which product has more shading units?

A: The H20 has 9984 shading units, while the RX 6600 LE has 1792. The H20 has approximately 5.6 times as many shading units.

Q: Do both products support graphics APIs?

A: No. The RX 6600 LE supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4. The H20 lists N/A for DirectX, OpenGL, and Vulkan.

Q: What are the power requirements for each product?

A: The RX 6600 LE has a 132 W TDP and a suggested PSU of 300 W. The H20 has a 500 W TDP and a suggested PSU of 900 W.

Where Each One Wins

The RX 6600 LE wins in every measured benchmark category, simply because it has recorded results and the H20 does not. Its Geekbench OpenCL score of 69,229 and Vulkan score of 72,428 place it in the 91st percentile of all GPUs. The H20 has no scores and sits at the 50th percentile by default.

The RX 6600 LE also wins in consumer-oriented features. It has display outputs, including 1x HDMI 2.1 and 3x DisplayPort 1.4a. It supports modern graphics APIs. It fits in a standard dual-slot form factor with a single 8-pin power connector. Its 132 W TDP makes it suitable for systems with a 300 W PSU.

The H20 wins in raw specifications that target data center workloads. Its 96 GB of HBM3 memory dwarfs the RX 6600 LE's 8 GB. Its 4.03 TB/s bandwidth is 18 times higher. Its 9984 shading units and 312 tensor cores provide massive parallel compute capacity. Its FP32 throughput of 39.54 TFLOPS is 4.4 times the RX 6600 LE's 8.942 TFLOPS.

The H20 also wins on the manufacturing frontier. Its 5 nm process node is smaller than the RX 6600 LE's 7 nm node. Its transistor density of 98.3 million per square millimeter is more than double the RX 6600 LE's 46.7 million. Its 80,000 million transistors on an 814 mm² die represent a far larger and more complex chip.

The RX 6600 LE wins in rasterization-focused metrics. Its pixel rate of 159.7 GPixel/s is over three times the H20's 47.52 GPixel/s. Its 64 ROPs exceed the H20's 24. Its boost clock of 2495 MHz runs 26% higher than its base clock, while the H20's boost clock of 1980 MHz runs only 8% higher. These characteristics suit graphics rendering workloads.

The H20 wins in texture and compute throughput. Its texture rate of 617.8 GTexel/s is over twice the RX 6600 LE's 279.4 GTexel/s. Its FP16 throughput of 79.07 TFLOPS is 4.4 times higher. Its tensor cores, absent from the RX 6600 LE, enable accelerated AI and machine learning workloads.

The RX 6600 LE wins on release timing for consumer availability. It was released on December 7, 2023, while the H20 followed on January 31, 2024. Both remain in active production according to the database.

The H20 wins in memory bus width and interface generation. Its 6144-bit bus is 48 times wider than the RX 6600 LE's 128-bit bus. It uses PCIe 5.0 x16, while the RX 6600 LE uses PCIe 4.0 x8. The H20's SXM module form factor suits dense server installations.

Specification Differences

The database records substantial specification differences between the two products. The most direct comparison uses only the fields where they differ.

| Specification | AMD Radeon RX 6600 LE | NVIDIA H20 |

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

| Chip | Navi 23 | GH100 |

| Architecture | RDNA 2.0 | Hopper |

| Generation | Navi II (RX 6000) | Server Hopper (Hxx) |

| Process Node | 7 nm | 5 nm |

| Transistors | 11,060 million | 80,000 million |

| Die Size | 237 mm² | 814 mm² |

| Transistor Density | 46.7M / mm² | 98.3M / mm² |

| Base Clock | 1626 MHz | 1830 MHz |

| Boost Clock | 2495 MHz | 1980 MHz |

| Game Clock | 2045 MHz | None |

| Memory Clock | 1750 MHz, 14 Gbps effective | 1313 MHz, 5.3 Gbps effective |

| Memory Size | 8 GB | 96 GB |

| Memory Type | GDDR6 | HBM3 |

| Memory Bus | 128 bit | 6144 bit |

| Memory Bandwidth | 224.0 GB/s | 4.03 TB/s |

| Shading Units | 1792 | 9984 |

| TMUs | 112 | 312 |

| ROPs | 64 | 24 |

| RT Cores | 28 | None |

| Tensor Cores | None | 312 |

| Pixel Rate | 159.7 GPixel/s | 47.52 GPixel/s |

| Texture Rate | 279.4 GTexel/s | 617.8 GTexel/s |

| FP32 | 8.942 TFLOPS | 39.54 TFLOPS |

| FP16 | 17.88 TFLOPS (2:1) | 79.07 TFLOPS (2:1) |

| TDP | 132 W | 500 W |

| Slot Width | Dual-slot | SXM Module |

| Power Connectors | 1x 8-pin | None |

| Suggested PSU | 300 W | 900 W |

| Bus Interface | PCIe 4.0 x8 | PCIe 5.0 x16 |

| Display Outputs | 1x HDMI 2.1, 3x DisplayPort 1.4a | No outputs |

| DirectX | 12 Ultimate (12_2) | N/A |

| OpenGL | 4.6 | N/A |

| Vulkan | 1.4 | N/A |

| Release Date | 2023-12-07 | 2024-01-31 |

| Predecessor | Navi | Server Ada |

| Successor | Navi III | Server Blackwell |

The two products share no overlapping specifications in the database. Every field where data exists differs between them. The RX 6600 LE is a compact, power-efficient consumer graphics card with display output and graphics API support. The H20 is a massive, power-hungry server accelerator with enormous memory capacity and compute throughput but no graphics output capability. The database records no benchmark scores for the H20, leaving its performance unmeasured in these metrics.