H100 SXM5 vs Radeon RX 6600M

Primary details

GPU architecture, market segment, value for money and other general parameters compared.

Place in the ranking136not rated
Place by popularitynot in top-100not in top-100
Power efficiency24.91no data
ArchitectureRDNA 2.0 (2020−2024)Hopper (2022−2023)
GPU code nameNavi 23GH100
Market segmentLaptopWorkstation
Release date31 May 2021 (3 years ago)22 March 2022 (2 years ago)

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores17928448
Core clock speed2068 MHz1065 MHz
Boost clock speed2416 MHz1780 MHz
Number of transistors11,060 million80,000 million
Manufacturing process technology7 nm4 nm
Power consumption (TDP)100 Watt700 Watt
Texture fill rate270.6939.8
Floating-point processing power8.659 TFLOPS30.07 TFLOPS
ROPs6424
TMUs112528
Tensor Coresno data528
Ray Tracing Cores28no data

Form factor & compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

Laptop sizemedium sizedno data
InterfacePCIe 4.0 x8PCIe 5.0 x16
Supplementary power connectorsNone8-pin EPS

VRAM capacity and type

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory typeGDDR6HBM3
Maximum RAM amount8 GB80 GB
Memory bus width128 Bit5120 Bit
Memory clock speed1750 MHz1500 MHz
Memory bandwidth224.0 GB/s1,920 GB/s
Shared memory--

Connectivity and outputs

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display ConnectorsNo outputsNo outputs

API compatibility

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX12 Ultimate (12_2)N/A
Shader Model6.5N/A
OpenGL4.6N/A
OpenCL2.13.0
Vulkan1.3N/A
CUDA-9.0

Pros & cons summary


Recency 31 May 2021 22 March 2022
Maximum RAM amount 8 GB 80 GB
Chip lithography 7 nm 4 nm
Power consumption (TDP) 100 Watt 700 Watt

RX 6600M has 600% lower power consumption.

H100 SXM5, on the other hand, has an age advantage of 9 months, a 900% higher maximum VRAM amount, and a 75% more advanced lithography process.

We couldn't decide between Radeon RX 6600M and H100 SXM5. We've got no test results to judge.

Be aware that Radeon RX 6600M is a notebook card while H100 SXM5 is a workstation one.


Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.

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AMD Radeon RX 6600M
Radeon RX 6600M
NVIDIA H100 SXM5
H100 SXM5

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Community ratings

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4.3 991 vote

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4.2 27 votes

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Questions & comments

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