Radeon RX 6600M vs GeForce FX 5800 Ultra

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Primary details

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

Place in the rankingnot rated136
Place by popularitynot in top-100not in top-100
Power efficiencyno data24.94
ArchitectureRankine (2003−2005)RDNA 2.0 (2020−2024)
GPU code nameNV30Navi 23
Market segmentDesktopLaptop
Release date6 March 2003 (21 year ago)31 May 2021 (3 years ago)
Launch price (MSRP)$399 no data

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 coresno data1792
Core clock speed500 MHz2068 MHz
Boost clock speedno data2416 MHz
Number of transistors125 million11,060 million
Manufacturing process technology130 nm7 nm
Power consumption (TDP)no data100 Watt
Texture fill rate4.000270.6
Floating-point processing powerno data8.659 TFLOPS
ROPs464
TMUs8112
Ray Tracing Coresno data28

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 sizeno datamedium sized
InterfaceAGP 8xPCIe 4.0 x8
Length213 mmno data
Width2-slotno data
Supplementary power connectors1x MolexNone

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 typeGDDR2GDDR6
Maximum RAM amount128 MB8 GB
Memory bus width128 Bit128 Bit
Memory clock speed500 MHz1750 MHz
Memory bandwidth16 GB/s224.0 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 Connectors1x DVI, 1x VGA, 1x S-VideoNo outputs

API compatibility

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

DirectX9.0a12 Ultimate (12_2)
Shader Modelno data6.5
OpenGL1.5 (2.1)4.6
OpenCLN/A2.1
VulkanN/A1.3

Pros & cons summary


Recency 6 March 2003 31 May 2021
Maximum RAM amount 128 MB 8 GB
Chip lithography 130 nm 7 nm

RX 6600M has an age advantage of 18 years, a 6300% higher maximum VRAM amount, and a 1757.1% more advanced lithography process.

We couldn't decide between GeForce FX 5800 Ultra and Radeon RX 6600M. We've got no test results to judge.

Be aware that GeForce FX 5800 Ultra is a desktop card while Radeon RX 6600M is a notebook 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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NVIDIA GeForce FX 5800 Ultra
GeForce FX 5800 Ultra
AMD Radeon RX 6600M
Radeon RX 6600M

Comparisons with similar GPUs

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Community ratings

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2.7 9 votes

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4.3 994 votes

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Questions & comments

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