T400 Mobile vs Radeon HD 6990M

Primary details

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

Place in the ranking	707	not rated
Place by popularity	not in top-100	not in top-100
Power efficiency	3.61	no data
Architecture	TeraScale 2 (2009−2015)	Turing (2018−2022)
GPU code name	Blackcomb	TU117
Market segment	Laptop	Laptop
Release date	12 July 2011 (15 years ago)	no data

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	1120	896
Core clock speed	715 MHz	no data
Boost clock speed	no data	1425 MHz
Number of transistors	1,700 million	4,700 million
Manufacturing process technology	40 nm	12 nm
Power consumption (TDP)	100 Watt	18 Watt
Texture fill rate	40.04	79.80
Floating-point processing power	1.602 TFLOPS	2.554 TFLOPS
ROPs	32	32
TMUs	56	56
L1 Cache	224 KB	no data
L2 Cache	512 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	large	no data
Interface	MXM-B (3.0)	PCIe 3.0 x16
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	GDDR6
Maximum RAM amount	2 GB	2 GB
Memory bus width	256 Bit	64 Bit
Memory clock speed	900 MHz	10 GB/s
Memory bandwidth	115.2 GB/s	80 GB/s
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	11.2 (11_0)	12 (12_1)
Shader Model	5.0	6.6
OpenGL	4.4	4.6
OpenCL	1.2	3.0
Vulkan	N/A	1.2
CUDA	-	7.5

Pros & cons summary

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Chip lithography	40 nm	12 nm
Power consumption (TDP)	100 Watt	18 Watt