ATI Mobility Radeon HD 3870 Full Specs

Summary

320 Shaders 660MHz

512MB GDDR3

Peak·FP32·FP16 422.4 GFLOPS

Form Factor MXM-II

TDP 55W

Highlights

Peak OPS

Peak OPS FP32 FP64

Mobility Radeon HD 3870422.4 GFLOPSFP32

x1

Top Score3.35 PFLOPS FP4 Tensor SparseDesktop1xGeForce RTX 5090

x7935.81

Theoretical Performance

Clock Speed660MHz UC·Boost·OC

Peak OPS 422.4 GFLOPSFP32

FP32 422.4 GFLOPS

FP64 84.48 GFLOPS

Pixel Rate 10.6 GPixel/s

Texture Rate 10.6 GTexel/s

Core Config

Shaders 320 Shaders

TMUs 16 TMUs

ROPs 16 ROPs

CUs 4 CUs

Clocks

Boost Clock 660MHz

Cache

L1 32KB/4SPs

L2 Cache 256KB shared

Memory

512MB GDDR3

Memory Speed 1.7GT/s

ECC No

Power & Thermals

TDP 55W

Video Output

Max Resolution 2560x1600

Refresh Rate Calculator 2560x1440 Resolution1440p QHD Refresh Rate 66Hz

Multi-Monitor 2

DSC Not Supported

API Support

Shader Model 4.1

DirectX DirectX 10 Direct3D 10_1

OpenGL 3.3 OpenCL 1.1

GFX 3

Decoder

Decoder UVD 1.0

Codec VC-1 AVC (H.264)

Card

Form Factor MXM-II

PCIe PCIe 2.0 x16

Multi-GPU Multi-GPU Support Supported Multi-GPU Type 2-way CrossFireX

Chip

Manufacturer ATI

Chip Designer ATI

Architecture TeraScale 1

Family Radeon HD 3000

Branding

Codename Boom

Chip Variant RV670 Pro

Market Segment Laptop

Release Date Jun 4, 2008

Fabrication

Foundry TSMC

Fabrication Node 55nm

Die Size 192mm²

Transistor Count 666M

Transistor Density 3.47 MTr/mm²

Images