AMD Radeon R9 255 OEM vs Intel Iris Graphics 540

Table of Contents

Graphics Processor

GPU model Cape Verde Skylake GT3e
GPU variant Cape Verde PRX
Architecture GCN 1.0 Generation 9.0
Foundry TSMC Intel
Manufacturing process 28 nm 14 nm+
Number of transistors 1,500 million unknown
Die size 123 mm² unknown

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

Clocks

Base clock 900 MHz 300 MHz
Boost clock 930 MHz 1000 MHz
Memory clock 1150 MHz 4.6 Gbps effective System Shared

Memory Configuration

Memory size 2 GB System Shared
Memory type GDDR5 System Shared
Memory bus width 128 bit System Shared
Bandwidth 73.60 GB/s System Dependent

Render Configuration

Shading units 512 384
TMUs 32 48
ROPs 16 6
Compute units 8
Cache L1 16 KB (per CU)
Cache L2 256 KB
Execution units 48

Performance

Pixel rate 14.88 GPixel/s 6.000 GPixel/s
Texture rate 29.76 GTexel/s 48.00 GTexel/s
FP32 (float) performance 952.3 GFLOPS 768.0 GFLOPS
FP64 (double) performance 59.52 GFLOPS (1:16)

Dimensions & Outputs

Slot width Dual-slot IGP
TDP 65 W 15 W
Suggested PSU 250 W
Outputs No outputs No outputs
Power connectors 1x 6-pin
Board number C750

API Support & Features

DirectX 12 (11_1) 12 (12_1)
OpenGL 4.6 4.6
OpenCL 1.2 3.0
Vulkan 1.2 1.2
Shader model 5.1 6.4

Other Features

Integrated Graphics

Release date Sep 1st, 2015
Generation HD Graphics-M (Skylake)
Production Active
Interface Ring Bus
Reviews 1 in our database

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