A800 PCIe 40 GB 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 efficiency24.92no data
ArchitectureRDNA 2.0 (2020−2024)Ampere (2020−2024)
GPU code nameNavi 23GA100
Market segmentLaptopWorkstation
Release date31 May 2021 (3 years ago)8 November 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 cores17926912
Core clock speed2068 MHz765 MHz
Boost clock speed2416 MHz1410 MHz
Number of transistors11,060 million54,200 million
Manufacturing process technology7 nm7 nm
Power consumption (TDP)100 Watt250 Watt
Texture fill rate270.6609.1
Floating-point processing power8.659 TFLOPS19.49 TFLOPS
ROPs64160
TMUs112432
Tensor Coresno data432
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 4.0 x16
Lengthno data267 mm
Widthno data2-slot
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 typeGDDR6HBM2e
Maximum RAM amount8 GB40 GB
Memory bus width128 Bit5120 Bit
Memory clock speed1750 MHz1215 MHz
Memory bandwidth224.0 GB/s1,555 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-8.0

Pros & cons summary


Recency 31 May 2021 8 November 2022
Maximum RAM amount 8 GB 40 GB
Power consumption (TDP) 100 Watt 250 Watt

RX 6600M has 150% lower power consumption.

A800 PCIe 40 GB, on the other hand, has an age advantage of 1 year, and a 400% higher maximum VRAM amount.

We couldn't decide between Radeon RX 6600M and A800 PCIe 40 GB. We've got no test results to judge.

Be aware that Radeon RX 6600M is a notebook card while A800 PCIe 40 GB 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 A800 PCIe 40 GB
A800 PCIe 40 GB

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Community ratings

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