AMD Radeon 680M 2200MHz vs AMD Radeon 740M 2500MHz Full Specs

Summary

768 Shaders 2.2GHz	256 Shaders 2.5GHz
Shared Memory204.8GB/s LPDDR5·DDR5	Shared Memory120GB/s LPDDR5X·DDR5
Peak·FP32·FP16 3.38 TFLOPS	Peak·FP32·FP16 1.28 TFLOPS
Form Factor iGPU	Form Factor iGPU
TDP Shared	TDP Shared

Theoretical Performance

Clock Speed2200MHz UC·Base·Boost·OC	Clock Speed2500MHz UC·Base·Boost·OC
Peak OPS 6.76 TFLOPSFP16	Peak OPS 2.56 TFLOPSFP16
-	BF16 2.56 TFLOPS
FP32 3.38 TFLOPS	FP32 1.28 TFLOPS
FP64 211.2 GFLOPS	FP64 80 GFLOPS
Pixel Rate 70.4 GPixel/s	Pixel Rate 20 GPixel/s
Texture Rate 105.6 GTexel/s	Texture Rate 40 GTexel/s

Core Config

Shaders 768 Shaders	Shaders 256 Shaders
TMUs 48 TMUs	TMUs 16 TMUs
ROPs 32 ROPs	ROPs 8 ROPs
RT Cores 12 RT-Cores	RT Cores 4 RT-Cores
CUs 12 CUs	CUs 4 CUs

Clocks

Base Clock 2GHz	Base Clock 1.5GHz
Boost Clock 2.2GHz	Boost Clock 2.5GHz

Cache

L0 Cache 32KB/WGP	L0 Cache 32KB/WGP
L1 256KB/Array	L1 256KB/Array

Memory

Shared Memory LPDDR5·DDR5	Shared Memory LPDDR5X·DDR5
Memory Bus 256-bit	Memory Bus 128-bit
Memory Speed 6.4GT/s	Memory Speed 7.5GT/s
Memory Bandwidth 204.8GB/s	Memory Bandwidth 120GB/s
ECC No	ECC No

Video Output

Max Resolution 4096x2160	Max Resolution 4096x2160
Refresh Rate Calculator 3840x2160 Resolution4K UHD Refresh Rate 64Hz	Refresh Rate Calculator 3840x2160 Resolution4K UHD Refresh Rate 64Hz
Multi-Monitor 4	Multi-Monitor 4
Adaptive Sync FreeSync	Adaptive Sync FreeSync
DSC Not Supported	DSC Not Supported
HDCP HDCP 2.2	HDCP HDCP 2.2

API Support

Shader Model 6.7	Shader Model 6.7
DirectX DirectX 12 Direct3D 12_2	DirectX DirectX 12 Direct3D 12_2
OpenGL 4.6 OpenCL 2.2 Vulkan 1.3	OpenGL 4.6 OpenCL 2.1 Vulkan 1.3
GFX 10.3	GFX 11

Encoder

Encoder VCN 3.1	Encoder VCN 4.0
Codec - AVC (H.264) HEVC (H.265) -	Codec VP9 AVC (H.264) HEVC (H.265) AV1

Decoder

Decoder VCN 3.1	Decoder VCN 4.0
Codec MPEG-1 MPEG-2 MPEG-4 JPEG VC-1 VP9 AVC (H.264) HEVC (H.265) AV1	Codec MPEG-1 MPEG-2 MPEG-4 JPEG VC-1 VP9 AVC (H.264) HEVC (H.265) AV1

Card

Form Factor iGPU

Form Factor iGPU

Chip

Manufacturer AMD	Manufacturer AMD
Chip Designer AMD	Chip Designer AMD
Architecture RDNA 2	Architecture RDNA 3
Family 600	Family 700
Branding	Branding
Codename Rembrandt	Codename Phoenix
Market Segment Laptop	Market Segment Laptop
Release Date Jan 4, 2023	Release Date May 3, 2023

Fabrication

Foundry TSMC	Foundry TSMC
Fabrication Node N6	Fabrication Node N4
Die Size 210mm²	Die Size 137mm²
Transistor Count 13.1B	Transistor Count 20.9B
Transistor Density 62 MTr/mm²	Transistor Density 153 MTr/mm²

Images