AMD Radeon HD 7990 vs AMD Radeon HD 6870 X2

Comparative analysis of AMD Radeon HD 7990 and AMD Radeon HD 6870 X2 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, 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 7990

AMD Radeon HD 6870 X2

Differences

Reasons to consider the AMD Radeon HD 7990

Videocard is newer: launch date 1 year(s) 9 month(s) later
Around 6% higher core clock speed: 950 MHz vs 900 MHz
8.5x more texture fill rate: 2x 128.0 GTexel / s billion / sec vs 2x 50.4 GTexel / s billion / sec
Around 83% higher pipelines: 2x 2048 vs 2x 1120
2x better floating-point performance: 2x 4,096 gflops vs 2x 2,016.0 gflops
A newer manufacturing process allows for a more powerful, yet cooler running videocard: 28 nm vs 40 nm
3x more maximum memory size: 2x 3 GB vs 2x 1 GB
Around 43% higher memory clock speed: 6000 MHz vs 4200 MHz
4.7x better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 8.437 vs 1.807

Specifications (specs)
Launch date	24 April 2013 vs 8 July 2011
Core clock speed	950 MHz vs 900 MHz
Texture fill rate	2x 128.0 GTexel / s billion / sec vs 2x 50.4 GTexel / s billion / sec
Pipelines	2x 2048 vs 2x 1120
Floating-point performance	2x 4,096 gflops vs 2x 2,016.0 gflops
Manufacturing process technology	28 nm vs 40 nm
Maximum memory size	2x 3 GB vs 2x 1 GB
Memory clock speed	6000 MHz vs 4200 MHz
Benchmarks
CompuBench 1.5 Desktop - T-Rex (Frames/s)	8.437 vs 1.807

Reasons to consider the AMD Radeon HD 6870 X2

Around 25% lower typical power consumption: 300 Watt vs 375 Watt

Thermal Design Power (TDP)	300 Watt vs 375 Watt

Compare benchmarks

GPU 1: AMD Radeon HD 7990
GPU 2: AMD Radeon HD 6870 X2

CompuBench 1.5 Desktop - T-Rex (Frames/s)

GPU 1

GPU 2

8.437

1.807

Name	AMD Radeon HD 7990	AMD Radeon HD 6870 X2
PassMark - G3D Mark	5566
PassMark - G2D Mark	766
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	88.665
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	1753.494
CompuBench 1.5 Desktop - T-Rex (Frames/s)	8.437	1.807
CompuBench 1.5 Desktop - Video Composition (Frames/s)	88.328
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	434.598
GFXBench 4.0 - Car Chase Offscreen (Frames)	6689
GFXBench 4.0 - Manhattan (Frames)	3712
GFXBench 4.0 - T-Rex (Frames)	3356
GFXBench 4.0 - Car Chase Offscreen (Fps)	6689
GFXBench 4.0 - Manhattan (Fps)	3712
GFXBench 4.0 - T-Rex (Fps)	3356
3DMark Fire Strike - Graphics Score	0

Compare specifications (specs)

	AMD Radeon HD 7990	AMD Radeon HD 6870 X2
Essentials
Architecture	GCN 1.0	TeraScale 2
Code name	Malta	Barts
Design	AMD Radeon HD 7000 Series
Launch date	24 April 2013	8 July 2011
Launch price (MSRP)	$999	$520
Place in performance rating	417	1613
Price now	$1,126.99
Type	Desktop	Desktop
Value for money (0-100)	7.87
Technical info
Boost clock speed	1000 MHz
Core clock speed	950 MHz	900 MHz
Floating-point performance	2x 4,096 gflops	2x 2,016.0 gflops
Manufacturing process technology	28 nm	40 nm
Pipelines	2x 2048	2x 1120
Texture fill rate	2x 128.0 GTexel / s billion / sec	2x 50.4 GTexel / s billion / sec
Thermal Design Power (TDP)	375 Watt	300 Watt
Transistor count	4,313 million	1,700 million
Video outputs and ports
Display Connectors	1x DVI, 4x mini-DisplayPort	2x DVI, 1x HDMI, 2x mini-DisplayPort
DisplayPort support
Dual-link DVI support
VGA
Compatibility, dimensions and requirements
Interface	PCIe 3.0 x16	PCIe 2.0 x16
Length	307 mm	304 mm
Supplementary power connectors	2x 8-pin
API support
DirectX	11.2	11.2 (11_0)
OpenGL	4.5	4.4
Memory
Maximum RAM amount	2x 3 GB	2x 1 GB
Memory bandwidth	2x 288.0 GB / s	2x 134.4 GB / s
Memory bus width	2x 384 Bit	2x 256 Bit
Memory clock speed	6000 MHz	4200 MHz
Memory type	GDDR5	GDDR5