AMD Radeon 540X Mobile vs NVIDIA GeForce GTX 660M

Table of Contents

Graphics Processor

GPU model Lexa GK107
GPU variant Lexa PRO (215-0904018) N13E-GE-A2
Architecture GCN 4.0 Kepler
Foundry GlobalFoundries TSMC
Manufacturing process 14 nm 28 nm
Number of transistors 2,200 million 1,270 million
Die size 103 mm² 118 mm²

Mobile graphics

Release date Feb 11th, 2019 Mar 22nd, 2012
Generation Mobility Radeon (M500X) GeForce 600M
Production End-of-life End-of-life
Interface PCIe 3.0 x8 MXM-B (3.0)
Predecessor Crystal System GeForce 500M
Successor GeForce 700M

Clocks

Base clock 980 MHz 835 MHz
Boost clock 1095 MHz 950 MHz
Memory clock 1000 MHz 4 Gbps effective 1000 MHz 4 Gbps effective

Memory Configuration

Memory size 2 GB 1024 MB
Memory type GDDR5 GDDR5
Memory bus width 64 bit 128 bit
Bandwidth 32.00 GB/s 64.00 GB/s

Render Configuration

Shading units 512 384
TMUs 32 32
ROPs 16 16
Compute units 8
Cache L1 16 KB (per CU) 16 KB (per SMX)
Cache L2 512 KB 256 KB
SMX count 2

Performance

Pixel rate 17.52 GPixel/s 7.600 GPixel/s
Texture rate 35.04 GTexel/s 30.40 GTexel/s
FP16 (half) performance 1,121 GFLOPS (1:1)
FP32 (float) performance 1,121 GFLOPS 729.6 GFLOPS
FP64 (double) performance 70.08 GFLOPS (1:16) 30.40 GFLOPS (1:24)

Dimensions & Outputs

Slot width Dual-slot MXM Module
TDP 50 W 50 W
Outputs No outputs No outputs
Power connectors None

API Support & Features

DirectX 12 (12_0) 12 (11_0)
OpenGL 4.6 4.6
OpenCL 2.1 3.0
Vulkan 1.2 1.1
Shader model 6.4 5.1
CUDA 3.0

Other Features

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