AMD Radeon HD 6870 X2 vs NVIDIA GeForce 8400M GT

Comparative analysis of AMD Radeon HD 6870 X2 and NVIDIA GeForce 8400M GT videocards for all known characteristics in the following categories: Essentials, Technical info, Video outputs and ports, Compatibility, dimensions and requirements, API support, Memory, Technologies. Benchmark videocards performance analysis: CompuBench 1.5 Desktop - T-Rex (Frames/s), PassMark - G3D Mark, PassMark - G2D Mark, GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - T-Rex (Fps).

AMD Radeon HD 6870 X2

NVIDIA GeForce 8400M GT

Differences

Reasons to consider the AMD Radeon HD 6870 X2

Videocard is newer: launch date 4 year(s) 1 month(s) later
2x more core clock speed: 900 MHz vs 450 MHz
69.6x more texture fill rate: 2x 50.4 GTexel / s billion / sec vs 3.6 GTexel / s
140x more pipelines: 2x 1120 vs 16
140x better floating-point performance: 2x 2,016.0 gflops vs 28.8 gflops
A newer manufacturing process allows for a more powerful, yet cooler running videocard: 40 nm vs 80 nm
4x more maximum memory size: 2x 1 GB vs 512 MB
3.5x more memory clock speed: 4200 MHz vs 1200 MHz

Launch date	8 July 2011 vs 9 May 2007
Core clock speed	900 MHz vs 450 MHz
Texture fill rate	2x 50.4 GTexel / s billion / sec vs 3.6 GTexel / s
Pipelines	2x 1120 vs 16
Floating-point performance	2x 2,016.0 gflops vs 28.8 gflops
Manufacturing process technology	40 nm vs 80 nm
Maximum memory size	2x 1 GB vs 512 MB
Memory clock speed	4200 MHz vs 1200 MHz

Reasons to consider the NVIDIA GeForce 8400M GT

21.4x lower typical power consumption: 14 Watt vs 300 Watt

Thermal Design Power (TDP)	14 Watt vs 300 Watt

Compare benchmarks

GPU 1: AMD Radeon HD 6870 X2
GPU 2: NVIDIA GeForce 8400M GT

Name	AMD Radeon HD 6870 X2	NVIDIA GeForce 8400M GT
CompuBench 1.5 Desktop - T-Rex (Frames/s)	1.807
PassMark - G3D Mark		67
PassMark - G2D Mark		56
GFXBench 4.0 - T-Rex (Frames)		892
GFXBench 4.0 - T-Rex (Fps)		892

Compare specifications (specs)

	AMD Radeon HD 6870 X2	NVIDIA GeForce 8400M GT
Essentials
Architecture	TeraScale 2	Tesla
Code name	Barts	G86
Launch date	8 July 2011	9 May 2007
Launch price (MSRP)	$520
Place in performance rating	1622	1623
Type	Desktop	Laptop
Technical info
Core clock speed	900 MHz	450 MHz
Floating-point performance	2x 2,016.0 gflops	28.8 gflops
Manufacturing process technology	40 nm	80 nm
Pipelines	2x 1120	16
Texture fill rate	2x 50.4 GTexel / s billion / sec	3.6 GTexel / s
Thermal Design Power (TDP)	300 Watt	14 Watt
Transistor count	1,700 million	210 million
Video outputs and ports
Display Connectors	2x DVI, 1x HDMI, 2x mini-DisplayPort	No outputs
Compatibility, dimensions and requirements
Interface	PCIe 2.0 x16	PCIe 1.0 x16
Length	304 mm
API support
DirectX	11.2 (11_0)	10.0
OpenGL	4.4	3.3
Memory
Maximum RAM amount	2x 1 GB	512 MB
Memory bandwidth	2x 134.4 GB / s	19.2 GB / s
Memory bus width	2x 256 Bit	128 Bit
Memory clock speed	4200 MHz	1200 MHz
Memory type	GDDR5	GDDR3 / GDDR2
Shared memory		0
Technologies
HDR (High Dynamic-Range Lighting)
PCI-E 16x
PowerMizer 7.0