ATI Radeon Xpress 1200 IGP vs GeForce GTX 660M Mac Edition

Primary details

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

Place in the ranking	1033	not rated
Place by popularity	not in top-100	not in top-100
Power efficiency	2.26	no data
Architecture	Kepler (2012−2018)	R400 (2004−2008)
GPU code name	GK107	RS600
Market segment	Laptop	Laptop
Release date	1 April 2013 (13 years ago)	28 February 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	384	no data
Core clock speed	950 MHz	501 MHz
Number of transistors	1,270 million	120 million
Manufacturing process technology	28 nm	90 nm
Power consumption (TDP)	50 Watt	no data
Texture fill rate	30.40	2.004
Floating-point processing power	0.7296 TFLOPS	no data
ROPs	16	4
TMUs	32	4
L1 Cache	32 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	MXM-B (3.0)	PCIe 1.0 x16
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	System Shared
Maximum RAM amount	512 MB	System Shared
Memory bus width	128 Bit	System Shared
Memory clock speed	1250 MHz	System Shared
Memory bandwidth	80 GB/s	no data
Shared memory	-	+

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

No outputs

No outputs

API and SDK support

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

DirectX	12 (11_0)	9.0b (9_2)
Shader Model	5.1	no data
OpenGL	4.6	2.0
OpenCL	1.2	N/A
Vulkan	1.1.126	N/A
CUDA	3.0	-

Pros & cons summary

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Recency	1 April 2013	28 February 2007
Chip lithography	28 nm	90 nm