AMD Radeon HD 6770M Mac Edition vs AMD Radeon R7 M270DX

Table of Contents

Graphics Processor

GPU model Whistler Jet
GPU variant Whistler XT (216-0810001) Jet PRO (216-0568010)
Architecture TeraScale 2 GCN 1.0
Foundry TSMC TSMC
Manufacturing process 40 nm 28 nm
Number of transistors 716 million 690 million
Die size 104 mm² 56 mm²

Mobile graphics

Release date Jan 28th, 2011
Generation Vancouver (HD 6700M)
Production End-of-life
Interface MXM-A (3.0)
Predecessor Manhattan
Successor London

Clocks

GPU clock 725 MHz
Memory clock 900 MHz 3.6 Gbps effective System Shared
Base clock 780 MHz
Boost clock 855 MHz

Memory Configuration

Memory size 512 MB System Shared
Memory type GDDR5 System Shared
Memory bus width 128 bit System Shared
Bandwidth 57.60 GB/s System Dependent

Render Configuration

Shading units 480 320
TMUs 24 20
ROPs 8 8
Compute units 6 5
Cache L1 8 KB (per CU) 16 KB (per CU)
Cache L2 256 KB 128 KB

Performance

Pixel rate 5.800 GPixel/s 6.840 GPixel/s
Texture rate 17.40 GTexel/s 17.10 GTexel/s
FP32 (float) performance 696.0 GFLOPS 547.2 GFLOPS
FP64 (double) performance 34.20 GFLOPS (1:16)

Dimensions & Outputs

Slot width MXM Module IGP
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

Integrated Graphics

Release date Jan 7th, 2014
Generation Crystal System (Rx M200)
Production End-of-life
Interface IGP

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