AMD Radeon HD 7870 XT vs ATI Mobility Radeon HD 3870

Comparative analysis of AMD Radeon HD 7870 XT and ATI Mobility Radeon HD 3870 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, 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 - Manhattan (Frames), GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - Car Chase Offscreen (Fps), GFXBench 4.0 - Manhattan (Fps), GFXBench 4.0 - T-Rex (Fps), 3DMark Fire Strike - Graphics Score.

AMD Radeon HD 7870 XT

ATI Mobility Radeon HD 3870

Differences

Reasons to consider the AMD Radeon HD 7870 XT

Videocard is newer: launch date 4 year(s) 5 month(s) later
Around 40% higher core clock speed: 925 MHz vs 660 MHz
8.9x more texture fill rate: 93.6 GTexel / s vs 10.56 GTexel / s
4.8x more pipelines: 1536 vs 320
7.1x better floating-point performance: 2,995 gflops vs 422.4 gflops
A newer manufacturing process allows for a more powerful, yet cooler running videocard: 28 nm vs 55 nm
4x more maximum memory size: 2 GB vs 512 MB
3.5x more memory clock speed: 6000 MHz vs 1700 MHz
8.2x better performance in PassMark - G3D Mark: 4470 vs 548
2.3x better performance in PassMark - G2D Mark: 661 vs 288

Specifications (specs)
Launch date	19 November 2012 vs 4 June 2008
Core clock speed	925 MHz vs 660 MHz
Texture fill rate	93.6 GTexel / s vs 10.56 GTexel / s
Pipelines	1536 vs 320
Floating-point performance	2,995 gflops vs 422.4 gflops
Manufacturing process technology	28 nm vs 55 nm
Maximum memory size	2 GB vs 512 MB
Memory clock speed	6000 MHz vs 1700 MHz
Benchmarks
PassMark - G3D Mark	4470 vs 548
PassMark - G2D Mark	661 vs 288

Reasons to consider the ATI Mobility Radeon HD 3870

3.4x lower typical power consumption: 55 Watt vs 185 Watt

Thermal Design Power (TDP)	55 Watt vs 185 Watt

Compare benchmarks

GPU 1: AMD Radeon HD 7870 XT
GPU 2: ATI Mobility Radeon HD 3870

PassMark - G3D Mark

GPU 1

GPU 2

4470

548

PassMark - G2D Mark

GPU 1

GPU 2

661

288

Name	AMD Radeon HD 7870 XT	ATI Mobility Radeon HD 3870
PassMark - G3D Mark	4470	548
PassMark - G2D Mark	661	288
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	65.399
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	1230.47
CompuBench 1.5 Desktop - T-Rex (Frames/s)	6.313
CompuBench 1.5 Desktop - Video Composition (Frames/s)	78.519
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	345.793
GFXBench 4.0 - Car Chase Offscreen (Frames)	2810
GFXBench 4.0 - Manhattan (Frames)	3264
GFXBench 4.0 - T-Rex (Frames)	3354
GFXBench 4.0 - Car Chase Offscreen (Fps)	2810
GFXBench 4.0 - Manhattan (Fps)	3264
GFXBench 4.0 - T-Rex (Fps)	3354
3DMark Fire Strike - Graphics Score	1745

Compare specifications (specs)

	AMD Radeon HD 7870 XT	ATI Mobility Radeon HD 3870
Essentials
Architecture	GCN 1.0	TeraScale
Code name	Tahiti	M88
Launch date	19 November 2012	4 June 2008
Launch price (MSRP)	$270
Place in performance rating	537	538
Type	Desktop	Laptop
Technical info
Boost clock speed	975 MHz
Core clock speed	925 MHz	660 MHz
Floating-point performance	2,995 gflops	422.4 gflops
Manufacturing process technology	28 nm	55 nm
Pipelines	1536	320
Texture fill rate	93.6 GTexel / s	10.56 GTexel / s
Thermal Design Power (TDP)	185 Watt	55 Watt
Transistor count	4,313 million	666 million
Video outputs and ports
Display Connectors	1x DVI, 1x HDMI, 2x mini-DisplayPort	No outputs
Compatibility, dimensions and requirements
Interface	PCIe 3.0 x16	PCIe 2.0 x16
Length	267 mm
Supplementary power connectors	2x 6-pin
Laptop size		large
API support
DirectX	12.0 (11_1)	10.1
OpenGL	4.5	3.3
Memory
Maximum RAM amount	2 GB	512 MB
Memory bandwidth	192.0 GB / s	54.4 GB / s
Memory bus width	256 Bit	256 Bit
Memory clock speed	6000 MHz	1700 MHz
Memory type	GDDR5	GDDR3
Shared memory		0
Technologies
PowerPlay 7.0