AMD Radeon HD 8670D vs AMD Radeon R5 4CU 756MHz GCN 2 Full Specs
384 Shaders 844MHz | 256 Shaders 756MHz |
Shared Memory34.1GB/s · | Shared Memory29.9GB/sDDR3 |
·· 648.2 GFLOPS | ·· 387.1 GFLOPS |
Form Factor iGPU | Form Factor iGPU |
TDP Shared | TDP Shared |
Clock Speed ·· | Clock Speed ·· |
Peak OPS 648.2 GFLOPSFP32 | Peak OPS 387.1 GFLOPSFP16 |
FP32 648.2 GFLOPS | FP32 387.1 GFLOPS |
- | FP64 24.19 GFLOPS |
Pixel Rate 6.8 GPixel/s | Pixel Rate 6 GPixel/s |
Texture Rate 20.3 GTexel/s | Texture Rate 12.1 GTexel/s |
Shaders 384 Shaders | Shaders 256 Shaders |
TMUs 24 TMUs | TMUs 16 TMUs |
ROPs 8 ROPs | ROPs 8 ROPs |
CUs 6 CUs | CUs 4 CUs |
Boost Clock 844MHz | Boost Clock 756MHz |
L2 Cache 256KB shared | L2 Cache 128KB shared |
Shared Memory · | Shared MemoryDDR3 |
Memory Bus 128-bit | Memory Bus 128-bit |
Memory Speed 2.1GT/s | Memory Speed 1.9GT/s |
Memory Bandwidth 34.1GB/s | Memory Bandwidth 29.9GB/s |
ECC No | ECC No |
Multi-Monitor 2 | Multi-Monitor 3 |
- | Encoder Model VCE 2.0 |
Codec - | Codec AVC (H.264) |
Decoder Model UVD 3.1 | Decoder Model UVD 4.2 |
Codec MPEG-1 MPEG-2 MPEG-4 VC-1 AVC (H.264) | Codec MPEG-1 MPEG-2 MPEG-4 VC-1 AVC (H.264) |
Form Factor iGPU | Form Factor iGPU |
Manufacturer | Manufacturer |
Chip Designer | Chip Designer |
Architecture | Architecture |
Family | Family |
Branding  | Branding |
Codename Devastator | Codename Spectre |
Chip Variant - | Chip Variant Spectre SL |
Market Segment Laptop | Market Segment Laptop |
Release Date May 23, 2013 | Release Date Jul 31, 2014 |
Foundry GlobalFoundries | Foundry GlobalFoundries |
Fabrication Node 32nm | Fabrication Node 28nm |
Die Size 246mm² | Die Size 245mm² |
Transistor Count 1.3 Billion | Transistor Count 2.4 Billion |
Transistor Density 5 MTr/mm² | Transistor Density 10 MTr/mm² |