AMD Radeon HD 8670D vs AMD Radeon R7 8CU 720MHz GCN 2 Full Specs

Summary

384 Shaders 844MHz	512 Shaders 720MHz
Shared Memory34.1GB/s DDR4·DDR3	Shared Memory34.1GB/sDDR4
Peak·FP32·FP16 648.2 GFLOPS	Peak·FP32·FP16 737.3 GFLOPS
Form Factor iGPU	Form Factor iGPU
TDP Shared	TDP Shared

Theoretical Performance

Clock Speed844MHz UC·Boost·OC	Clock Speed720MHz UC·Boost·OC
Peak OPS 648.2 GFLOPSFP32	Peak OPS 737.3 GFLOPSFP16
FP32 648.2 GFLOPS	FP32 737.3 GFLOPS
-	FP64 46.08 GFLOPS
Pixel Rate 6.8 GPixel/s	Pixel Rate 5.8 GPixel/s
Texture Rate 20.3 GTexel/s	Texture Rate 23 GTexel/s

Core Config

Shaders 384 Shaders	Shaders 512 Shaders
TMUs 24 TMUs	TMUs 32 TMUs
ROPs 8 ROPs	ROPs 8 ROPs
CUs 6 CUs	CUs 8 CUs

Clocks

Boost Clock 844MHz

Boost Clock 720MHz

Cache

L2 Cache 256KB shared

L2 Cache 128KB shared

Memory

Shared Memory DDR4·DDR3	Shared MemoryDDR4
Memory Bus 128-bit	Memory Bus 128-bit
Memory Speed 2.1GT/s	Memory Speed 2.1GT/s
Memory Bandwidth 34.1GB/s	Memory Bandwidth 34.1GB/s
ECC No	ECC No

Video Output

Multi-Monitor 2

Multi-Monitor 3

Encoder

-	Encoder Model VCE 2.0
Codec -	Codec AVC (H.264)

Decoder

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)

Card

Form Factor iGPU

Form Factor iGPU

Chip

Manufacturer AMD	Manufacturer AMD
Chip Designer AMD	Chip Designer AMD
Architecture TeraScale 3	Architecture GCN 2
Family Radeon HD 8000	Family GCN 2
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

Fabrication

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

Images