Radeon 550X Mobile vs ATI X1900 GT

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Primary details

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

Place in the ranking1268not rated
Place by popularitynot in top-100not in top-100
Power efficiency0.35no data
ArchitectureR500 (2005−2007)GCN 4.0 (2016−2020)
GPU code nameR580Polaris 23
Market segmentDesktopLaptop
Release date1 May 2006 (18 years ago)11 April 2018 (6 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 coresno data640
Core clock speed575 MHz1100 MHz
Boost clock speedno data1287 MHz
Number of transistors384 million2,200 million
Manufacturing process technology90 nm14 nm
Power consumption (TDP)75 Watt50 Watt
Texture fill rate6.90051.48
Floating-point processing powerno data1.647 TFLOPS
ROPs1216
TMUs1240

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).

InterfacePCIe 1.0 x16PCIe 3.0 x8
Width1-slotno data
Supplementary power connectors1x 6-pinno data

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 typeGDDR3GDDR5
Maximum RAM amount256 MB4 GB
Memory bus width256 Bit64 Bit
Memory clock speed600 MHz1500 MHz
Memory bandwidth38.4 GB/s48 GB/s

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 Connectors2x DVI, 1x S-VideoNo outputs

API compatibility

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

DirectX9.0c (9_3)12 (12_0)
Shader Model3.06.4
OpenGL2.04.6
OpenCLN/A2.0
VulkanN/A1.2.131

Pros & cons summary


Recency 1 May 2006 11 April 2018
Maximum RAM amount 256 MB 4 GB
Chip lithography 90 nm 14 nm
Power consumption (TDP) 75 Watt 50 Watt

550X Mobile has an age advantage of 11 years, a 1500% higher maximum VRAM amount, a 542.9% more advanced lithography process, and 50% lower power consumption.

We couldn't decide between Radeon X1900 GT and Radeon 550X Mobile. We've got no test results to judge.

Be aware that Radeon X1900 GT is a desktop card while Radeon 550X Mobile 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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ATI Radeon X1900 GT
Radeon X1900 GT
AMD Radeon 550X Mobile
Radeon 550X Mobile

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