AMD Radeon HD 7770M vs AMD Radeon HD 7870M

Comparative analysis of AMD Radeon HD 7770M and AMD Radeon HD 7870M 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).

 

Differences

Reasons to consider the AMD Radeon HD 7770M

  • Around 41% lower typical power consumption: 32 Watt vs 45 Watt
Thermal Design Power (TDP) 32 Watt vs 45 Watt

Reasons to consider the AMD Radeon HD 7870M

  • Around 19% higher core clock speed: 800 MHz vs 675 MHz
  • Around 48% higher texture fill rate: 32 GTexel / s vs 21.6 GTexel / s
  • Around 25% higher pipelines: 640 vs 512
  • Around 48% better floating-point performance: 1,024 gflops vs 691.2 gflops
  • 2x more maximum memory size: 2 GB vs 1 GB
Core clock speed 800 MHz vs 675 MHz
Texture fill rate 32 GTexel / s vs 21.6 GTexel / s
Pipelines 640 vs 512
Floating-point performance 1,024 gflops vs 691.2 gflops
Maximum memory size 2 GB vs 1 GB

Compare benchmarks

GPU 1: AMD Radeon HD 7770M
GPU 2: AMD Radeon HD 7870M

Name AMD Radeon HD 7770M AMD Radeon HD 7870M
PassMark - G3D Mark 1507
PassMark - G2D Mark 556
GFXBench 4.0 - Manhattan (Frames) 1367
GFXBench 4.0 - Manhattan (Fps) 1367
GFXBench 4.0 - T-Rex (Frames) 3359
GFXBench 4.0 - T-Rex (Fps) 3359

Compare specifications (specs)

AMD Radeon HD 7770M AMD Radeon HD 7870M

Essentials

Architecture GCN 1.0 GCN 1.0
Code name Chelsea Heathrow
Launch date 24 April 2012 24 April 2012
Place in performance rating not rated 577
Type Laptop Laptop

Technical info

Core clock speed 675 MHz 800 MHz
Floating-point performance 691.2 gflops 1,024 gflops
Manufacturing process technology 28 nm 28 nm
Pipelines 512 640
Texture fill rate 21.6 GTexel / s 32 GTexel / s
Thermal Design Power (TDP) 32 Watt 45 Watt
Transistor count 1,500 million 1,500 million

Video outputs and ports

Display Connectors No outputs No outputs

Compatibility, dimensions and requirements

Interface PCIe 2.0 x16 PCIe 3.0 x16
Laptop size medium sized large

API support

DirectX 12.0 (11_1) 12.0 (11_1)
OpenGL 4.5 4.5

Memory

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

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