AMD Radeon HD 8670M vs NVIDIA GeForce GT 425M

Table of Contents

Graphics Processor

GPU model Mars GF108
GPU variant Mars XT N11P-GS-A1
Architecture GCN 1.0 Fermi
Foundry TSMC TSMC
Manufacturing process 28 nm 40 nm
Number of transistors 950 million 585 million
Die size 77 mm² 116 mm²

Mobile graphics

Release date Mar 1st, 2013 Sep 3rd, 2010
Generation Solar System (HD 8600M) GeForce 400M
Production End-of-life End-of-life
Interface PCIe 3.0 x8 PCIe 2.0 x16
Predecessor London GeForce 300M
Successor Crystal System GeForce 500M

Clocks

Base clock 775 MHz
Boost clock 825 MHz
Memory clock 900 MHz 1800 Mbps effective 800 MHz 1600 Mbps effective
GPU clock 560 MHz
Shader clock 1120 MHz

Memory Configuration

Memory size 1024 MB 1024 MB
Memory type DDR3 DDR3
Memory bus width 64 bit 128 bit
Bandwidth 14.40 GB/s 25.60 GB/s

Render Configuration

Shading units 384 96
TMUs 24 16
ROPs 8 4
Compute units 6
Cache L1 16 KB (per CU) 64 KB (per SM)
Cache L2 128 KB 256 KB
SM count 2

Performance

Pixel rate 6.600 GPixel/s 2.240 GPixel/s
Texture rate 19.80 GTexel/s 8.960 GTexel/s
FP32 (float) performance 633.6 GFLOPS 215.0 GFLOPS
FP64 (double) performance 17.92 GFLOPS (1:12)

Dimensions & Outputs

TDP unknown 23 W
Outputs No outputs No outputs

API Support & Features

DirectX 12 (11_1) 12 (11_0)
OpenGL 4.6 4.6
OpenCL 1.2 1.1
Vulkan 1.2
Shader model 5.1 5.1
CUDA 2.1

Other Features

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