GMA vs GeForce GT 640M

Primary details

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

Place in the ranking	836	not rated
Place by popularity	not in top-100	not in top-100
Power efficiency	5.19	no data
Architecture	Kepler (2012−2018)	PowerVR SGX545 (2008−2010)
GPU code name	GK107	Cloverview
Market segment	Laptop	Desktop
Release date	22 March 2012 (12 years ago)	4 May 2010 (14 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	Up to 625 MHz	533 MHz
Boost clock speed	645 MHz	no data
Number of transistors	1,270 million	no data
Manufacturing process technology	28 nm	32 nm
Power consumption (TDP)	32 Watt	no data
Texture fill rate	20.00	1.066
Floating-point processing power	0.48 TFLOPS	no data
ROPs	16	1
TMUs	32	2

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
Bus support	PCI Express 2.0, PCI Express 3.0	no data
Interface	PCIe 3.0 x16	PCIe 1.0 x16
Width	no data	IGP

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	DDR3\GDDR5	System Shared
Maximum RAM amount	2 GB	System Shared
Memory bus width	128bit	System Shared
Memory clock speed	900 MHz	System Shared
Memory bandwidth	Up to 64.0 GB/s	no data
Shared memory	-	no data

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	No outputs	No outputs
HDMI	+	-
HDCP	+	-
Maximum VGA resolution	Up to 2048x1536	no data

Supported technologies

Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.

3D Blu-Ray	+	-
Optimus	+	-

API compatibility

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

DirectX	12 API	9.0c
Shader Model	5.1	3.0
OpenGL	4.5	ES 2.0
OpenCL	1.1	N/A
Vulkan	1.1.126	N/A
CUDA	+	-

Synthetic benchmark performance

Non-gaming benchmark results comparison. The combined score is measured on a 0-100 point scale.

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Pros & cons summary

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Recency	22 March 2012	4 May 2010
Chip lithography	28 nm	32 nm

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