AMD Radeon HD 6770M vs AMD Radeon R7 A265

Table of Contents

Graphics Processor

GPU model Whistler Opal
GPU variant Whistler XT (216-0810001) Opal XT
Architecture TeraScale 2 GCN 1.0
Foundry TSMC TSMC
Manufacturing process 40 nm 28 nm
Number of transistors 716 million 950 million
Die size 104 mm² 77 mm²

Mobile graphics

Release date Jan 4th, 2011 Jan 9th, 2014
Generation Vancouver (HD 6700M) All-In-One (Rx 200)
Production End-of-life End-of-life
Interface MXM-A (3.0) PCIe 3.0 x8
Predecessor Manhattan
Successor London

Clocks

GPU clock 725 MHz
Memory clock 900 MHz 3.6 Gbps effective 900 MHz 1800 Mbps effective
Base clock 725 MHz
Boost clock 825 MHz

Memory Configuration

Memory size 1024 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 480 384
TMUs 24 24
ROPs 8 8
Compute units 6 6
Cache L1 8 KB (per CU) 16 KB (per CU)
Cache L2 256 KB 256 KB

Performance

Pixel rate 5.800 GPixel/s 6.600 GPixel/s
Texture rate 17.40 GTexel/s 19.80 GTexel/s
FP32 (float) performance 696.0 GFLOPS 633.6 GFLOPS
FP64 (double) performance 39.60 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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