GeForce FX 5900 XT vs Radeon 820M

Primary details

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

Place in the ranking	677	not rated
Place by popularity	not in top-100	not in top-100
Power efficiency	27.18	no data
Architecture	RDNA 3.5 (2025−2026)	Rankine (2003−2005)
GPU code name	Krackan Point 2	NV35
Market segment	Laptop	Desktop
Release date	March 2025 (1 year ago)	12 May 2003 (23 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. Real power consumption of some graphics cards can well exceed their nominal TDP, especially if overclocked.

Pipelines / CUDA cores	128	no data
Core clock speed	400 MHz	400 MHz
Boost clock speed	2800 MHz	no data
Number of transistors	no data	135 million
Manufacturing process technology	4 nm	130 nm
Power consumption (TDP)	15 Watt	35 Watt
Texture fill rate	22.40	3.200
ROPs	4	4
TMUs	8	8
Ray Tracing Cores	2	no data
L0 Cache	32 KB	no data
L1 Cache	32 KB	no data
L2 Cache	1024 KB	no 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 size	medium sized	no data
Interface	PCIe 4.0 x8	AGP 8x
Width	no data	1-slot
Supplementary power connectors	None	1x Molex

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 type	System Shared	DDR
Maximum RAM amount	System Shared	128 MB
Memory bus width	System Shared	256 Bit
Memory clock speed	System Shared	350 MHz
Memory bandwidth	no data	22.4 GB/s
Shared memory	+	no data

Connectivity and outputs

This section shows the types and number of video connectors on each GPU. The data applies specifically to desktop reference models (for example, NVIDIA’s Founders Edition). OEM partners often modify both the number and types of ports. On notebook GPUs, video‐output options are determined by the laptop’s design rather than the graphics chip itself.

Display Connectors

Portable Device Dependent

1x DVI, 1x VGA, 1x S-Video

API and SDK support

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

DirectX	12 Ultimate (12_2)	9.0a
Shader Model	6.8	no data
OpenGL	4.6	1.5 (2.1)
OpenCL	2.1	N/A
Vulkan	1.4	N/A

Pros & cons summary

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Chip lithography	4 nm	130 nm
Power consumption (TDP)	15 Watt	35 Watt