AMD Radeon HD 7660G IGP vs ATI Radeon HD 3870 X2

Table of Contents

Graphics Processor

GPU model Devastator R680
Architecture TeraScale 3 TeraScale
Foundry TSMC TSMC
Manufacturing process 32 nm 55 nm
Number of transistors 1,303 million 666 million
Die size 246 mm² 192 mm²
GPU variant R680 XT (215-0708017)

Integrated Graphics

Release date May 15th, 2012
Generation Trinity (HD 7000 Mobile)
Production End-of-life
Interface IGP
Predecessor Sumo
Successor Richland

Clocks

GPU clock 686 MHz 825 MHz
Memory clock System Shared 901 MHz 1802 Mbps effective

Memory Configuration

Memory size System Shared 512 MB
Memory type System Shared GDDR3
Memory bus width System Shared 256 bit
Bandwidth System Dependent 57.66 GB/s

Render Configuration

Shading units 384 320
TMUs 24 16
ROPs 8 16
Compute units 6 4
Cache L2 256 KB

Performance

Pixel rate 5.488 GPixel/s 13.20 GPixel/s
Texture rate 16.46 GTexel/s 13.20 GTexel/s
FP32 (float) performance 526.8 GFLOPS 528.0 GFLOPS
FP64 (double) performance 105.6 GFLOPS (1:5)

Dimensions & Outputs

Slot width IGP Dual-slot
TDP 35 W 165 W
Outputs No outputs 2x DVI1x S-Video
Length 267 mm 10.5 inches
Width 113 mm 4.4 inches
Height 39 mm 1.5 inches
Suggested PSU 450 W
Power connectors 1x 6-pin + 1x 8-pin
Board number B400

API Support & Features

DirectX 11.2 (11_0) 10.1 (10_1)
OpenGL 4.4 3.3 (full) 4.0 (partial)
OpenCL 1.2
Vulkan
Shader model 5.0 4.1

Other Features

Graphics Card

Release date Jan 26th, 2008
Generation Radeon R600
Production End-of-life
Launch price 449 USD
Interface PCIe 2.0 x16
Reviews 72 in our database
Predecessor Radeon R500 PCIe
Successor Radeon R700

Compare

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