Intel Iris Pro Graphics P580 vs ATI Mobility Radeon HD 3870 X2

Comparative analysis of Intel Iris Pro Graphics P580 and ATI Mobility Radeon HD 3870 X2 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: PassMark - G3D Mark, PassMark - G2D Mark, Geekbench - OpenCL, GFXBench 4.0 - Manhattan (Frames), GFXBench 4.0 - Manhattan (Fps), GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - T-Rex (Fps).

Intel Iris Pro Graphics P580

ATI Mobility Radeon HD 3870 X2

Differences

Reasons to consider the Intel Iris Pro Graphics P580

Videocard is newer: launch date 7 year(s) 0 month(s) later
A newer manufacturing process allows for a more powerful, yet cooler running videocard: 14 nm vs 55 nm
7.3x lower typical power consumption: 15 Watt vs 110 Watt
64x more maximum memory size: 64 GB vs 2x 512 MB
4.7x better performance in PassMark - G3D Mark: 2231 vs 478
2.7x better performance in PassMark - G2D Mark: 509 vs 187

Specifications (specs)
Launch date	1 September 2015 vs 1 September 2008
Manufacturing process technology	14 nm vs 55 nm
Thermal Design Power (TDP)	15 Watt vs 110 Watt
Maximum memory size	64 GB vs 2x 512 MB
Benchmarks
PassMark - G3D Mark	2231 vs 478
PassMark - G2D Mark	509 vs 187

Reasons to consider the ATI Mobility Radeon HD 3870 X2

2.2x more core clock speed: 660 MHz vs 300 MHz
8.9x more pipelines: 640 vs 72

Core clock speed	660 MHz vs 300 MHz
Pipelines	640 vs 72

Compare benchmarks

GPU 1: Intel Iris Pro Graphics P580
GPU 2: ATI Mobility Radeon HD 3870 X2

PassMark - G3D Mark

GPU 1

GPU 2

2231

478

PassMark - G2D Mark

GPU 1

GPU 2

509

187

Name	Intel Iris Pro Graphics P580	ATI Mobility Radeon HD 3870 X2
PassMark - G3D Mark	2231	478
PassMark - G2D Mark	509	187
Geekbench - OpenCL	10015
GFXBench 4.0 - Manhattan (Frames)	1671
GFXBench 4.0 - Manhattan (Fps)	1671
GFXBench 4.0 - T-Rex (Frames)	3175
GFXBench 4.0 - T-Rex (Fps)	3175

Compare specifications (specs)

	Intel Iris Pro Graphics P580	ATI Mobility Radeon HD 3870 X2
Essentials
Architecture	Generation 9.0	TeraScale
Code name	Skylake GT4e	M88
Launch date	1 September 2015	1 September 2008
Place in performance rating	666	868
Type	Laptop	Laptop
Technical info
Boost clock speed	1000 MHz
Core clock speed	300 MHz	660 MHz
Manufacturing process technology	14 nm	55 nm
Pipelines	72	640
Thermal Design Power (TDP)	15 Watt	110 Watt
Transistor count	189 million	666 million
Floating-point performance		2x 422.4 gflops
Texture fill rate		2x 10.56 GTexel / s billion / sec
Video outputs and ports
Display Connectors	No outputs	No outputs
Compatibility, dimensions and requirements
Interface	PCIe 3.0 x1	PCIe 2.0 x16
Laptop size		large
API support
DirectX	12.0 (12_1)	10.1
OpenGL	4.6	3.3
Memory
Maximum RAM amount	64 GB	2x 512 MB
Memory type	DDR3L / LPDDR3 / DDR4	GDDR3
Shared memory	1	0
Memory bandwidth		2x 54.4 GB / s
Memory bus width		256 Bit
Memory clock speed		1700 MHz
Technologies
Quick Sync