AMD Radeon HD 7870M vs AMD Radeon HD 7970M

Comparative analysis of AMD Radeon HD 7870M and AMD Radeon HD 7970M videocards for all known characteristics in the following categories: Essentials, Technical info, Video outputs and ports, Compatibility, dimensions and requirements, API support, Memory. Benchmark videocards performance analysis: PassMark - G3D Mark, PassMark - G2D Mark, GFXBench 4.0 - Manhattan (Frames), GFXBench 4.0 - Manhattan (Fps), GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - T-Rex (Fps), Geekbench - OpenCL, CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s), GFXBench 4.0 - Car Chase Offscreen (Frames), GFXBench 4.0 - Car Chase Offscreen (Fps), 3DMark Fire Strike - Graphics Score.

AMD Radeon HD 7870M

AMD Radeon HD 7970M

Differences

Reasons to consider the AMD Radeon HD 7870M

2.2x lower typical power consumption: 45 Watt vs 100 Watt
Around 12% better performance in PassMark - G2D Mark: 556 vs 496
Around 1% better performance in GFXBench 4.0 - T-Rex (Frames): 3359 vs 3339
Around 1% better performance in GFXBench 4.0 - T-Rex (Fps): 3359 vs 3339

Specifications (specs)
Thermal Design Power (TDP)	45 Watt vs 100 Watt
Benchmarks
PassMark - G2D Mark	556 vs 496
GFXBench 4.0 - T-Rex (Frames)	3359 vs 3339
GFXBench 4.0 - T-Rex (Fps)	3359 vs 3339

Reasons to consider the AMD Radeon HD 7970M

Around 6% higher core clock speed: 850 MHz vs 800 MHz
2.1x more texture fill rate: 68 GTexel / s vs 32 GTexel / s
2x more pipelines: 1280 vs 640
2.1x better floating-point performance: 2,176 gflops vs 1,024 gflops
Around 20% higher memory clock speed: 4800 MHz vs 4000 MHz
2.4x better performance in PassMark - G3D Mark: 3569 vs 1507
2.7x better performance in GFXBench 4.0 - Manhattan (Frames): 3692 vs 1367
2.7x better performance in GFXBench 4.0 - Manhattan (Fps): 3692 vs 1367

Specifications (specs)
Core clock speed	850 MHz vs 800 MHz
Texture fill rate	68 GTexel / s vs 32 GTexel / s
Pipelines	1280 vs 640
Floating-point performance	2,176 gflops vs 1,024 gflops
Memory clock speed	4800 MHz vs 4000 MHz
Benchmarks
PassMark - G3D Mark	3569 vs 1507
GFXBench 4.0 - Manhattan (Frames)	3692 vs 1367
GFXBench 4.0 - Manhattan (Fps)	3692 vs 1367

Compare benchmarks

GPU 1: AMD Radeon HD 7870M
GPU 2: AMD Radeon HD 7970M

PassMark - G3D Mark

GPU 1

GPU 2

1507

3569

PassMark - G2D Mark

GPU 1

GPU 2

556

496

GFXBench 4.0 - Manhattan (Frames)

GPU 1

GPU 2

1367

3692

GFXBench 4.0 - Manhattan (Fps)

GPU 1

GPU 2

1367

3692

GFXBench 4.0 - T-Rex (Frames)

GPU 1

GPU 2

3359

3339

GFXBench 4.0 - T-Rex (Fps)

GPU 1

GPU 2

3359

3339

Name	AMD Radeon HD 7870M	AMD Radeon HD 7970M
PassMark - G3D Mark	1507	3569
PassMark - G2D Mark	556	496
GFXBench 4.0 - Manhattan (Frames)	1367	3692
GFXBench 4.0 - Manhattan (Fps)	1367	3692
GFXBench 4.0 - T-Rex (Frames)	3359	3339
GFXBench 4.0 - T-Rex (Fps)	3359	3339
Geekbench - OpenCL		17210
CompuBench 1.5 Desktop - Face Detection (mPixels/s)		51.181
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)		1121.002
CompuBench 1.5 Desktop - T-Rex (Frames/s)		5.355
CompuBench 1.5 Desktop - Video Composition (Frames/s)		81.527
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)		256.99
GFXBench 4.0 - Car Chase Offscreen (Frames)		5094
GFXBench 4.0 - Car Chase Offscreen (Fps)		5094
3DMark Fire Strike - Graphics Score		0

Compare specifications (specs)

	AMD Radeon HD 7870M	AMD Radeon HD 7970M
Essentials
Architecture	GCN 1.0	GCN 1.0
Code name	Heathrow	Wimbledon
Launch date	24 April 2012	24 April 2012
Place in performance rating	590	591
Type	Laptop	Laptop
Technical info
Core clock speed	800 MHz	850 MHz
Floating-point performance	1,024 gflops	2,176 gflops
Manufacturing process technology	28 nm	28 nm
Pipelines	640	1280
Texture fill rate	32 GTexel / s	68 GTexel / s
Thermal Design Power (TDP)	45 Watt	100 Watt
Transistor count	1,500 million	2,800 million
Video outputs and ports
Display Connectors	No outputs	No outputs
Compatibility, dimensions and requirements
Interface	PCIe 3.0 x16	MXM-B (3.0)
Laptop size	large	large
Supplementary power connectors		None
API support
DirectX	12.0 (11_1)	12.0 (11_1)
OpenGL	4.5	4.5
Memory
Maximum RAM amount	2 GB	2 GB
Memory bandwidth	64 GB / s	153.6 GB / s
Memory bus width	128 Bit	256 Bit
Memory clock speed	4000 MHz	4800 MHz
Memory type	GDDR5	GDDR5
Shared memory	0	0