AMD Radeon HD 6770M Mac Edition vs AMD Radeon R9 M375

Table of Contents

Graphics Processor

GPU model Whistler Tropo
GPU variant Whistler XT (216-0810001) Tropo XT2
Architecture TeraScale 2 GCN 1.0
Foundry TSMC TSMC
Manufacturing process 40 nm 28 nm
Number of transistors 716 million 1,500 million
Die size 104 mm² 123 mm²

Mobile graphics

Release date Jan 28th, 2011 May 5th, 2015
Generation Vancouver (HD 6700M) Crystal System (R9 M300)
Production End-of-life End-of-life
Interface MXM-A (3.0) PCIe 3.0 x16
Predecessor Manhattan Solar System
Successor London Mobility Radeon

Clocks

GPU clock 725 MHz
Memory clock 900 MHz 3.6 Gbps effective 900 MHz 1800 Mbps effective
Base clock 1000 MHz
Boost clock 1015 MHz

Memory Configuration

Memory size 512 MB 2 GB
Memory type GDDR5 DDR3
Memory bus width 128 bit 128 bit
Bandwidth 57.60 GB/s 28.80 GB/s

Render Configuration

Shading units 480 640
TMUs 24 40
ROPs 8 16
Compute units 6 10
Cache L1 8 KB (per CU) 16 KB (per CU)
Cache L2 256 KB 256 KB

Performance

Pixel rate 5.800 GPixel/s 16.24 GPixel/s
Texture rate 17.40 GTexel/s 40.60 GTexel/s
FP32 (float) performance 696.0 GFLOPS 1,299 GFLOPS
FP64 (double) performance 81.20 GFLOPS (1:16)

Dimensions & Outputs

Slot width MXM Module
TDP 35 W unknown
Outputs No outputs No outputs

API Support & Features

DirectX 11.2 (11_0) 12 (11_1)
OpenGL 4.4 4.6
OpenCL 1.2 1.2
Vulkan 1.2
Shader model 5.0 5.1

Other Features

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