ATI Radeon X1650 SE vs 550X 640SP

Primary details

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

Place in the ranking	not rated	1475
Place by popularity	not in top-100	not in top-100
Power efficiency	no data	0.48
Architecture	GCN 4.0 (2016−2020)	Ultra-Threaded SE (2005−2007)
GPU code name	Lexa	RV515
Market segment	Desktop	Desktop
Release date	11 April 2018 (7 years ago)	2007 (19 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 cores	640	no data
Core clock speed	1019 MHz	635 MHz
Boost clock speed	1071 MHz	no data
Number of transistors	2,200 million	107 million
Manufacturing process technology	14 nm	90 nm
Power consumption (TDP)	50 Watt	27 Watt
Texture fill rate	42.84	2.540
Floating-point processing power	1.371 TFLOPS	no data
ROPs	16	4
TMUs	40	4
L1 Cache	160 KB	no data
L2 Cache	256 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).

Interface	PCIe 3.0 x8	PCIe 1.0 x16
Width	IGP	1-slot
Supplementary power connectors	None	None

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	GDDR5	DDR2
Maximum RAM amount	4 GB	512 MB
Memory bus width	64 Bit	128 Bit
Memory clock speed	1500 MHz	800 MBps
Memory bandwidth	48 GB/s	12.8 GB/s

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	1x DVI, 1x HDMI, 1x DisplayPort	1x DVI, 1x VGA, 1x S-Video
HDMI	+	-

API and SDK support

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

DirectX	12 (12_0)	9.0c (9_3)
Shader Model	6.4	3.0
OpenGL	4.6	2.1
OpenCL	2.0	N/A
Vulkan	1.2.131	N/A

Pros & cons summary

---

Maximum RAM amount	4 GB	512 MB
Chip lithography	14 nm	90 nm
Power consumption (TDP)	50 Watt	27 Watt