AMD Radeon HD 7850M vs AMD Radeon R9 M370X Mac Edition

Graphics Processor

GPU model Heathrow Tropo
GPU variant Heathrow PRO Tropo XT
Architecture GCN 1.0 GCN 1.0
Foundry TSMC TSMC
Manufacturing process 28 nm 28 nm
Number of transistors 1,500 million 1,500 million
Die size 123 mm² 123 mm²

Mobile graphics

Release date Apr 24th, 2012 May 5th, 2015
Generation London (HD 7800M) Crystal System (R9 M300)
Production End-of-life End-of-life
Interface PCIe 3.0 x16 PCIe 3.0 x16
Predecessor Vancouver Solar System
Successor Solar System Mobility Radeon

Clocks

GPU clock 675 MHz
Memory clock 1000 MHz 4 Gbps effective 1125 MHz 4.5 Gbps effective
Base clock 775 MHz
Boost clock 800 MHz

Memory Configuration

Memory size 2 GB 2 GB
Memory type GDDR5 GDDR5
Memory bus width 128 bit 128 bit
Bandwidth 64.00 GB/s 72.00 GB/s

Render Configuration

Shading units 640 640
TMUs 40 40
ROPs 16 16
Compute units 10 10
Cache L1 16 KB (per CU) 16 KB (per CU)
Cache L2 256 KB 256 KB

Performance

Pixel rate 10.80 GPixel/s 12.80 GPixel/s
Texture rate 27.00 GTexel/s 32.00 GTexel/s
FP32 (float) performance 864.0 GFLOPS 1,024 GFLOPS
FP64 (double) performance 54.00 GFLOPS (1:16) 64.00 GFLOPS (1:16)

Dimensions & Outputs

TDP 40 W unknown
Outputs No outputs No outputs

API Support & Features

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

Other Features

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