GeForce Go 7900 GS SLI vs GT 820M

Primary details

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

Place in the ranking	1090	not rated
Place by popularity	not in top-100	not in top-100
Power efficiency	6.55	no data
Architecture	Fermi 2.0 (2010−2014)	G7x (2005−2006)
GPU code name	GF117	G71M
Market segment	Laptop	Laptop
Release date	27 November 2013 (12 years ago)	1 June 2006 (20 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	96	54
Core clock speed	775 MHz	14 MHz
Boost clock speed	no data	375 MHz
Number of transistors	585 million	556 Million
Manufacturing process technology	28 nm	90 nm
Power consumption (TDP)	15 Watt	40 Watt
Texture fill rate	12.40	no data
Floating-point processing power	0.2976 TFLOPS	no data
ROPs	8	no data
TMUs	16	no data
L1 Cache	128 KB	no data
L2 Cache	128 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).

Laptop size	no data	large
Interface	PCIe 2.0 x16	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	DDR3	GDDR3
Maximum RAM amount	1 GB	1 GB
Memory bus width	64 Bit	256 Bit
Memory clock speed	900 MHz	500 MHz
Memory bandwidth	14.4 GB/s	no data
Shared memory	no data	-

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 data

API and SDK support

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

DirectX	12 (11_0)	GDDR3
Shader Model	5.1	no data
OpenGL	4.6	no data
OpenCL	1.1	no data
Vulkan	N/A	-
CUDA	2.1	-

Pros & cons summary

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Recency	27 November 2013	1 June 2006
Chip lithography	28 nm	90 nm
Power consumption (TDP)	15 Watt	40 Watt