ATI Radeon HD 3870 X2 Full Specs

Summary

640 Shaders 825MHz

1.02GB GDDR4144GB/s

Peak·FP32·FP16 1.06 TFLOPS

Form Factor PCIe Card

TDP 165W

Power Connectors 1x 8-Pin 1x 6-Pin

Highlights

Peak OPS

Peak OPS FP32 FP64 Memory Bandwidth

Radeon HD 3870 X21.06 TFLOPSFP32 (2x 528 GFLOPS)

x1

Top Score3.35 PFLOPS FP4 Tensor SparseDesktop1xGeForce RTX 5090

x3174.32

Theoretical Performance

Clock Speed825MHz UC·Boost·OC

Peak OPS 1.06 TFLOPSFP32

FP32 1.06 TFLOPS

FP64 211.2 GFLOPS

Pixel Rate 13.2 GPixel/s

Texture Rate 13.2 GTexel/s

Core Config

Shaders 640 Shaders

TMUs 32 TMUs

ROPs 32 ROPs

CUs 8 CUs

Clocks

Boost Clock 825MHz

Cache

L1 32KB/4SPs

L2 Cache 256KB shared

Memory

1.02GB GDDR4

Memory Bus 256-bit

Memory Speed 2.3GT/s

Memory Bandwidth 144GB/s

ECC No

Power & Thermals

TDP 165W

Video Output

Max Resolution 2560x1600

Refresh Rate Calculator 2560x1440 Resolution1440p QHD Refresh Rate 66Hz

Multi-Monitor 2

DSC Not Supported

Ports

2x DVI-I Dual-Link 1x S-Video

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 PCIe Card

PCIe PCIe 2.0 x16 2-Slots

Cooling Blower 1x Fan

Power Connectors 1x 8-Pin, 1x 6-Pin

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 R680 XT

Market Segment Desktop

Release Date Jan 28, 2008

Fabrication

Foundry TSMC

Fabrication Node 55nm

Die Size 192mm²

Transistor Count 666M

Transistor Density 3.47 MTr/mm²

Images