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Sapphire HD 3870 Atomic
102-B33904-01-OC

RV670
Graphics Processor
320
Cores
16
TMUs
16
ROPs
512 MB
Memory Size
GDDR4
Memory Type
256 bit
Bus Width
Sapphire HD 3870 Atomic Image ATI RV670 Image

Graphics Processor

GPU Name
RV670
GPU Variant
RV670 XT
Architecture
TeraScale
Process Size
55 nm
Transistors
666 million
Die Size
192 mm²

Graphics Card

Released
Nov 19th, 2007
Jan 21st, 2008
Production Status
End-of-life
Bus Interface
PCIe 2.0 x16

Clock Speeds

GPU Clock
777 MHz
825 MHz (+6%)
Memory Clock
1126 MHz
1200 MHz (+7%)
2252 MHz effective
2400 MHz effective

Memory

Memory Size
512 MB
Memory Type
GDDR4
Memory Bus
256 bit
Bandwidth
72.06 GB/s
76.80 GB/s

Render Config

Shading Units
320
TMUs
16
ROPs
16
Compute Units
4
Pixel Rate
12.43 GPixel/s
13.20 GPixel/s
Texture Rate
12.43 GTexel/s
13.20 GTexel/s
Floating-point performance
497.3 GFLOPS
528.0 GFLOPS

Board Design

Slot Width
Dual-slot
Single-slot
Length
9.5 inches
241 mm
TDP
106 W
Outputs
2x DVI
1x S-Video
Power Connectors
1x 6-pin
Board Number
B339

Graphics Features

DirectX
10.0
OpenGL
3.3
OpenCL
1.0
Vulkan
N/A
Shader Model
4.0

Reviews

Our review database contains 80 reviews of the HD 3870 Atomic.

RV670 GPU Notes

Graphics/Compute: GFX3
Display Core Engine: 2.0
Unified Video Decoder: 1.0

RV670 Chip Numbers:
RV670 PRO ES (215-0708001)
RV670 PRO (215-0708003)
RV670 XT (215-0708005)
RV670 XT (215-0708017)

Other retail boards based on this design (11)

Name GPU Clock Memory Clock Other Changes
ASUS HD 3870 Magic 777 MHz 855 MHz GDDR3, 9 inches/229 mm, Single-slot
ASUS HD 3870 TOP 851 MHz 1143 MHz 9 inches/229 mm, Single-slot
Diamond Viper HD 3870 Ruby Edition 850 MHz 950 MHz 1024 MB, GDDR3, 9 inches/229 mm
Diamond Viper HD 3870 Ruby Edition 820 MHz 1200 MHz 9 inches/229 mm
HIS HD 3870 IceQ 3 Turbo 850 MHz 1190 MHz 9.49 inches/241 mm
Sapphire HD 3870 777 MHz 1126 MHz
Sapphire HD 3870 Atomic 825 MHz 1200 MHz Single-slot
Sapphire HD 3870 Toxic II 800 MHz 1152 MHz Single-slot
Sapphire HD 3870 Ultimate 800 MHz 1152 MHz Single-slot
Sapphire HD 3870 Vapor-X 800 MHz 1100 MHz 1024 MB, Single-slot
VisionTek HD 3870 777 MHz 1126 MHz GDDR3, Single-slot