AMD Radeon 540 Mobile vs AMD Radeon R9 255 OEM

Table of Contents

Graphics Processor

GPU model Lexa Cape Verde
GPU variant Lexa PRO (215-0904018) Cape Verde PRX
Architecture GCN 4.0 GCN 1.0
Foundry GlobalFoundries TSMC
Manufacturing process 14 nm 28 nm
Number of transistors 2,200 million 1,500 million
Die size 103 mm² 123 mm²

Mobile graphics

Release date Mar 26th, 2019
Generation Mobility Radeon (M500)
Production End-of-life
Interface PCIe 3.0 x8
Predecessor Crystal System

Clocks

Base clock 1100 MHz 900 MHz
Boost clock 1124 MHz 930 MHz
Memory clock 1500 MHz 6 Gbps effective 1150 MHz 4.6 Gbps effective

Memory Configuration

Memory size 2 GB 2 GB
Memory type GDDR5 GDDR5
Memory bus width 64 bit 128 bit
Bandwidth 48.00 GB/s 73.60 GB/s

Render Configuration

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

Performance

Pixel rate 17.98 GPixel/s 14.88 GPixel/s
Texture rate 35.97 GTexel/s 29.76 GTexel/s
FP16 (half) performance 1,151 GFLOPS (1:1)
FP32 (float) performance 1,151 GFLOPS 952.3 GFLOPS
FP64 (double) performance 71.94 GFLOPS (1:16) 59.52 GFLOPS (1:16)

Dimensions & Outputs

Slot width Dual-slot Dual-slot
TDP 50 W 65 W
Outputs No outputs No outputs
Power connectors None 1x 6-pin
Suggested PSU 250 W
Board number C750

API Support & Features

DirectX 12 (12_0) 12 (11_1)
OpenGL 4.6 4.6
OpenCL 2.1 1.2
Vulkan 1.2 1.2
Shader model 6.4 5.1

Other Features

Graphics Card

Release date Dec 21st, 2013
Generation Volcanic Islands
Production End-of-life
Interface PCIe 3.0 x16
Predecessor Sea Islands
Successor Pirate Islands

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