Radeon X1550 vs HD 4520

Primary Details

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

Place in performance ranking	not rated	not rated
Place by popularity	not in top-100	not in top-100
Architecture	TeraScale (2005−2013)	Ultra-Threaded SE
GPU code name	RV710	RV516
Market segment	Desktop	Desktop
Release date	2 December 2009 (14 years ago)	2007 (17 years ago)
Current price	$90	$129

Detailed Specifications

General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores	80	no data
Core clock speed	600 MHz	550 MHz
Number of transistors	242 million	105 million
Manufacturing process technology	55 nm	90 nm
Power consumption (TDP)	25 Watt	27 Watt
Texture fill rate	4.800	2.200
Floating-point performance	96 gflops	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).

Interface	PCIe 2.0 x16	PCIe 1.0 x16
Length	168 mm	no data
Width	1-slot	1-slot
Supplementary power connectors	None	None

Memory type	DDR2	DDR2
Maximum RAM amount	512 MB	256 MB
Memory bus width	64 Bit	128 Bit
Memory clock speed	800 MHz	800 MBps
Memory bandwidth	6.4 GB/s	12.8 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 Connectors	1x DVI, 1x HDMI, 1x DisplayPort	1x DVI, 1x VGA, 1x S-Video
HDMI	+	no data

API Compatibility

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

DirectX	10.1 (10_1)	9.0c (9_3)
Shader Model	4.1	3.0
OpenGL	3.3	2.1
OpenCL	1.1	N/A
Vulkan	N/A	N/A

Pros & Cons Summary

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Maximum RAM amount	512 MB	256 MB
Chip lithography	55 nm	90 nm
Power consumption (TDP)	25 Watt	27 Watt

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

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