AMD Radeon R5 M255 vs AMD Radeon R7 M265

Table of Contents

Graphics Processor

GPU model Topaz Opal
GPU variant Topaz PRO (216-0864032) Opal XT
Architecture GCN 3.0 GCN 1.0
Foundry TSMC TSMC
Manufacturing process 28 nm 28 nm
Number of transistors 1,550 million 950 million
Die size 125 mm² 77 mm²

Mobile graphics

Release date Oct 12th, 2014 Jan 9th, 2014
Generation Crystal System (R5 M200) Crystal System (R7 M200)
Production End-of-life End-of-life
Interface PCIe 3.0 x8 PCIe 3.0 x8
Predecessor Solar System Solar System
Successor Mobility Radeon Mobility Radeon

Clocks

Base clock 925 MHz 725 MHz
Boost clock 940 MHz 825 MHz
Memory clock 1000 MHz 4 Gbps effective 900 MHz 1800 Mbps effective

Memory Configuration

Memory size 1024 MB 2 GB
Memory type GDDR5 DDR3
Memory bus width 128 bit 128 bit
Bandwidth 64.00 GB/s 28.80 GB/s

Render Configuration

Shading units 384 384
TMUs 24 24
ROPs 8 8
Compute units 6 6
Cache L1 16 KB (per CU) 16 KB (per CU)
Cache L2 256 KB 256 KB

Performance

Pixel rate 7.520 GPixel/s 6.600 GPixel/s
Texture rate 22.56 GTexel/s 19.80 GTexel/s
FP16 (half) performance 721.9 GFLOPS (1:1)
FP32 (float) performance 721.9 GFLOPS 633.6 GFLOPS
FP64 (double) performance 45.12 GFLOPS (1:16)

Dimensions & Outputs

TDP unknown unknown
Outputs No outputs No outputs

API Support & Features

DirectX 12 (12_0) 12 (11_1)
OpenGL 4.6 4.6
OpenCL 2.0 1.2
Vulkan 1.2 1.2
Shader model 6.3 5.1

Other Features

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