AMD Radeon HD 8790M vs AMD Radeon HD 6790

Comparative analysis of AMD Radeon HD 8790M and AMD Radeon HD 6790 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, 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 - 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.

 

Differences

Reasons to consider the AMD Radeon HD 8790M

  • Videocard is newer: launch date 1 year(s) 11 month(s) later
  • Around 1% higher core clock speed: 850 MHz vs 840 MHz
  • A newer manufacturing process allows for a more powerful, yet cooler running videocard: 28 nm vs 40 nm
  • 2x more maximum memory size: 2 GB vs 1 GB
  • 2x better performance in PassMark - G2D Mark: 751 vs 373
  • Around 4% better performance in CompuBench 1.5 Desktop - Face Detection (mPixels/s): 12.759 vs 12.318
  • Around 28% better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 1.576 vs 1.234
Specifications (specs)
Launch date 1 April 2013 vs 4 April 2011
Core clock speed 850 MHz vs 840 MHz
Manufacturing process technology 28 nm vs 40 nm
Maximum memory size 2 GB vs 1 GB
Benchmarks
PassMark - G2D Mark 751 vs 373
CompuBench 1.5 Desktop - Face Detection (mPixels/s) 12.759 vs 12.318
CompuBench 1.5 Desktop - T-Rex (Frames/s) 1.576 vs 1.234
CompuBench 1.5 Desktop - Video Composition (Frames/s) 28.839 vs 28.768

Reasons to consider the AMD Radeon HD 6790

  • Around 56% higher texture fill rate: 33.6 GTexel / s vs 21.6 GTexel / s
  • 2.1x more pipelines: 800 vs 384
  • Around 94% better floating-point performance: 1,344.0 gflops vs 691.2 gflops
  • Around 5% higher memory clock speed: 4200 MHz vs 4000 MHz
  • Around 24% better performance in PassMark - G3D Mark: 1619 vs 1306
  • Around 61% better performance in CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 750.421 vs 465.631
  • Around 51% better performance in CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s): 121.423 vs 80.418
  • Around 43% better performance in GFXBench 4.0 - Car Chase Offscreen (Frames): 3127 vs 2181
  • Around 33% better performance in GFXBench 4.0 - Manhattan (Frames): 3534 vs 2656
  • Around 66% better performance in GFXBench 4.0 - T-Rex (Frames): 3350 vs 2014
  • Around 43% better performance in GFXBench 4.0 - Car Chase Offscreen (Fps): 3127 vs 2181
  • Around 33% better performance in GFXBench 4.0 - Manhattan (Fps): 3534 vs 2656
  • Around 66% better performance in GFXBench 4.0 - T-Rex (Fps): 3350 vs 2014
Specifications (specs)
Texture fill rate 33.6 GTexel / s vs 21.6 GTexel / s
Pipelines 800 vs 384
Floating-point performance 1,344.0 gflops vs 691.2 gflops
Memory clock speed 4200 MHz vs 4000 MHz
Benchmarks
PassMark - G3D Mark 1619 vs 1306
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s) 750.421 vs 465.631
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s) 121.423 vs 80.418
GFXBench 4.0 - Car Chase Offscreen (Frames) 3127 vs 2181
GFXBench 4.0 - Manhattan (Frames) 3534 vs 2656
GFXBench 4.0 - T-Rex (Frames) 3350 vs 2014
GFXBench 4.0 - Car Chase Offscreen (Fps) 3127 vs 2181
GFXBench 4.0 - Manhattan (Fps) 3534 vs 2656
GFXBench 4.0 - T-Rex (Fps) 3350 vs 2014

Compare benchmarks

GPU 1: AMD Radeon HD 8790M
GPU 2: AMD Radeon HD 6790

PassMark - G3D Mark
GPU 1
GPU 2
1306
1619
PassMark - G2D Mark
GPU 1
GPU 2
751
373
CompuBench 1.5 Desktop - Face Detection (mPixels/s)
GPU 1
GPU 2
12.759
12.318
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)
GPU 1
GPU 2
465.631
750.421
CompuBench 1.5 Desktop - T-Rex (Frames/s)
GPU 1
GPU 2
1.576
1.234
CompuBench 1.5 Desktop - Video Composition (Frames/s)
GPU 1
GPU 2
28.839
28.768
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)
GPU 1
GPU 2
80.418
121.423
GFXBench 4.0 - Car Chase Offscreen (Frames)
GPU 1
GPU 2
2181
3127
GFXBench 4.0 - Manhattan (Frames)
GPU 1
GPU 2
2656
3534
GFXBench 4.0 - T-Rex (Frames)
GPU 1
GPU 2
2014
3350
GFXBench 4.0 - Car Chase Offscreen (Fps)
GPU 1
GPU 2
2181
3127
GFXBench 4.0 - Manhattan (Fps)
GPU 1
GPU 2
2656
3534
GFXBench 4.0 - T-Rex (Fps)
GPU 1
GPU 2
2014
3350
Name AMD Radeon HD 8790M AMD Radeon HD 6790
PassMark - G3D Mark 1306 1619
PassMark - G2D Mark 751 373
Geekbench - OpenCL 4679
CompuBench 1.5 Desktop - Face Detection (mPixels/s) 12.759 12.318
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s) 465.631 750.421
CompuBench 1.5 Desktop - T-Rex (Frames/s) 1.576 1.234
CompuBench 1.5 Desktop - Video Composition (Frames/s) 28.839 28.768
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s) 80.418 121.423
GFXBench 4.0 - Car Chase Offscreen (Frames) 2181 3127
GFXBench 4.0 - Manhattan (Frames) 2656 3534
GFXBench 4.0 - T-Rex (Frames) 2014 3350
GFXBench 4.0 - Car Chase Offscreen (Fps) 2181 3127
GFXBench 4.0 - Manhattan (Fps) 2656 3534
GFXBench 4.0 - T-Rex (Fps) 2014 3350
3DMark Fire Strike - Graphics Score 1607

Compare specifications (specs)

AMD Radeon HD 8790M AMD Radeon HD 6790

Essentials

Architecture GCN 1.0 TeraScale 2
Code name Mars Barts
Design AMD Radeon HD 8000M Series
Launch date 1 April 2013 4 April 2011
Place in performance rating 861 862
Type Desktop Desktop
Launch price (MSRP) $149
Price now $64.99
Value for money (0-100) 39.40

Technical info

Boost clock speed 850 MHz
Compute units 6
Core clock speed 850 MHz 840 MHz
Floating-point performance 691.2 gflops 1,344.0 gflops
Manufacturing process technology 28 nm 40 nm
Pipelines 384 800
Texture fill rate 21.6 GTexel / s 33.6 GTexel / s
Transistor count 1,040 million 1,700 million
Thermal Design Power (TDP) 150 Watt

Video outputs and ports

Display Connectors No outputs 2x DVI, 1x HDMI, 1x DisplayPort

Compatibility, dimensions and requirements

Interface MXM-A (3.0) PCIe 2.0 x16
Laptop size medium sized
Supplementary power connectors None 2x 6-pin
Length 198 mm

API support

DirectX 11 11.2 (11_0)
OpenGL 4.4 4.4

Memory

Maximum RAM amount 2 GB 1 GB
Memory bandwidth 64 GB / s 134.4 GB / s
Memory bus width 128 Bit 256 Bit
Memory clock speed 4000 MHz 4200 MHz
Memory type GDDR5 GDDR5
Shared memory 0