GeForce2 Go 100 vs GeForce GTX 645 OEM

Primary details

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

Place in the ranking	not rated	not rated
Place by popularity	not in top-100	not in top-100
Architecture	Kepler (2012−2018)	Celsius (1999−2005)
GPU code name	GK106	NV11 B2
Market segment	Desktop	Laptop
Release date	22 April 2013 (13 years ago)	6 February 2001 (25 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. Real power consumption of some graphics cards can well exceed their nominal TDP, especially if overclocked.

Pipelines / CUDA cores	576	no data
Core clock speed	824 MHz	125 MHz
Number of transistors	2,540 million	20 million
Manufacturing process technology	28 nm	180 nm
Power consumption (TDP)	65 Watt	2 Watt
Texture fill rate	39.55	0.5
Floating-point processing power	0.9492 TFLOPS	no data
ROPs	16	2
TMUs	48	4
L1 Cache	48 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 x16	AGP 4x
Length	147 mm	no data
Width	1-slot	no data
Supplementary power connectors	None	no 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 type	GDDR5	DDR
Maximum RAM amount	1 GB	16 MB
Memory bus width	128 Bit	32 Bit
Memory clock speed	1000 MHz	166 MHz
Memory bandwidth	64 GB/s	1.328 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	No outputs
HDMI	+	-

API and SDK support

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

DirectX	12 (11_0)	7.0
Shader Model	5.1	no data
OpenGL	4.6	1.2
OpenCL	1.2	N/A
Vulkan	1.1.126	N/A
CUDA	3.0	-

Pros & cons summary

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Recency	22 April 2013	6 February 2001
Maximum RAM amount	1 GB	16 MB
Chip lithography	28 nm	180 nm
Power consumption (TDP)	65 Watt	2 Watt