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ATI Radeon HD 3870

Graphics Processor
RV670
Cores
320
TMUs
16
ROPs
16
Memory Size
512 MB
Memory Type
GDDR4
Bus Width
256 bit
The Radeon HD 3870 was a performance graphics card by ATI, launched in November 2007. Built on the 55 nm process, and based on the RV670 graphics processor, in its RV670 XT variant, the card supports DirectX 10.1. The RV670 graphics processor is an average sized chip with a die area of 192 mm² and 666 million transistors. It features 320 shading units, 16 texture mapping units and 16 ROPs. ATI has placed 512 MB GDDR4 memory on the card, which are connected using a 256-bit memory interface. The GPU is operating at a frequency of 777 MHz, memory is running at 1126 MHz.
Being a dual-slot card, the ATI Radeon HD 3870 draws power from 1x 6-pin power connectors, with power draw rated at 106 W maximum. Display outputs include: 2x DVI, 1x S-Video. Radeon HD 3870 is connected to the rest of the system using a PCI-Express 2.0 x16 interface. The card measures 241 mm in length, and features a dual-slot cooling solution. Its price at launch was 269 US Dollars.

Graphics Processor

GPU Name
RV670
GPU Variant
RV670 XT
(215-0708005)
Architecture
TeraScale
Foundry
TSMC
Process Size
55 nm
Transistors
666 million
Die Size
192 mm²

Graphics Card

Release Date
Nov 19th, 2007
Generation
Radeon R600
(HD 3800)
Production
End-of-life
Launch Price
269 USD
Bus Interface
PCIe 2.0 x16
Reviews
80 in our database

Relative Performance

22%
GeForce 210
28%
GeForce 9400 GT
34%
Radeon HD 4550
44%
Radeon HD 5450
51%
Radeon HD 6450
54%
GeForce GT 520
67%
GeForce GT 220
88%
GeForce GT 430
89%
Radeon HD 5570
97%
Radeon HD 4670
100%
Radeon HD 3870
102%
GeForce GT 440
104%
GeForce GT 240
119%
GeForce 9600 GT
127%
Radeon HD 5670
136%
GeForce GT 640
141%
GeForce 9800 GT
146%
Radeon HD 6670
151%
Radeon HD 4830
161%
Radeon HD 4770
170%
Radeon HD 4850
174%
GeForce GTS 250
179%
GeForce GTS 450
185%
Radeon HD 5750
211%
Radeon HD 7750
213%
Radeon HD 5770
217%
GeForce GTX 260
219%
Radeon HD 4870
220%
Radeon Vega 8
222%
GeForce GTX 550 Ti
224%
GeForce GTX 650
237%
Radeon HD 5830
249%
Radeon HD 6790
253%
Radeon HD 4890
263%
GeForce GTX 460
265%
Radeon RX Vega 11
268%
GeForce GT 1030
270%
GeForce GTX 275
271%
Radeon HD 7770 GHz Edition
271%
GeForce GTX 280
277%
GeForce GTX 465
290%
Radeon HD 6850
296%
GeForce GTX 285
317%
Radeon HD 5850
323%
GeForce GTX 650 Ti
323%
Radeon HD 7790
337%
Radeon RX 550
337%
GeForce GTX 470
349%
Radeon HD 6870
373%
Radeon HD 5870
385%
GeForce GTX 560 Ti
387%
Radeon HD 4870 X2
394%
GeForce GTX 750 Ti
396%
Radeon HD 6950
409%
GeForce GTX 295
414%
GeForce GTX 650 Ti Boost
417%
Radeon HD 7850
425%
GeForce GTX 480
444%
Radeon HD 6970
453%
Radeon R7 265
460%
Radeon RX 460
460%
Radeon R7 370
462%
GeForce GTX 660
463%
GeForce GTX 570
471%
Radeon RX 560
500%
GeForce GTX 950
505%
Radeon HD 7870 GHz Edition
517%
Radeon R9 270X
523%
GeForce GTX 660 Ti
526%
GeForce GTX 580
530%
GeForce GTX 1050
531%
Radeon HD 7950
541%
Radeon HD 5970
557%
GeForce GTX 760
599%
GeForce GTX 670
615%
GeForce GTX 960
630%
Radeon R9 380
634%
Radeon R9 285
641%
Radeon HD 7970
647%
GeForce GTX 680
662%
GeForce GTX 1050 Ti
680%
GeForce GTX 770
695%
Radeon HD 6990
712%
Radeon R9 280X
722%
GeForce GTX 590
722%
Radeon HD 7970 GHz Edition
800%
GeForce GTX 780
829%
GeForce GTX 1650
881%
Radeon RX 470
893%
Radeon R9 290
941%
Radeon RX 570
953%
Radeon R9 390
958%
Radeon R9 290X
971%
GeForce GTX 970
983%
GeForce GTX TITAN
997%
GeForce GTX 780 Ti
1011%
Radeon R9 390X
1015%
Radeon HD 7990
1020%
Radeon RX 480
1029%
GeForce GTX 690
1084%
Radeon RX 580
1107%
GeForce GTX 980
1121%
Radeon R9 FURY
1121%
GeForce GTX 1060 6 GB
1171%
Radeon RX 590
1233%
Radeon R9 295X2
1240%
GeForce GTX 1660
1254%
Radeon R9 FURY X
1275%
GeForce GTX 980 Ti
1308%
GeForce GTX TITAN X
1423%
GeForce GTX 1660 Ti
1423%
GeForce GTX 1070
1515%
Radeon RX Vega 56
1607%
GeForce GTX 1070 Ti
1653%
Radeon RX Vega 64
1676%
GeForce GTX 1080
1676%
GeForce RTX 2060
1745%
Radeon RX 5700
1882%
GeForce RTX 2060 SUPER
1951%
GeForce RTX 2070
1997%
Radeon RX 5700 XT
2020%
Radeon VII
2072%
TITAN X Pascal
2135%
GeForce GTX 1080 Ti
2158%
GeForce RTX 2070 SUPER
2295%
GeForce RTX 2080
2433%
GeForce RTX 2080 SUPER
2686%
GeForce RTX 2080 Ti
Based on TPU review data: "Performance Summary" at 1920x1080
Performance estimated based on architecture, shader count and clocks.

Clock Speeds

GPU Clock
777 MHz
Memory Clock
1126 MHz
2252 MHz effective

Memory

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

Render Config

Shading Units
320
TMUs
16
ROPs
16
Compute Units
4
L2 Cache
256 KB

Theoretical Performance

Pixel Rate
12.43 GPixel/s
Texture Rate
12.43 GTexel/s
FP32 (float) performance
497.3 GFLOPS
FP64 (double) performance
99.46 GFLOPS (1:5)

Board Design

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

Graphics Features

DirectX
10.1 (10_1)
OpenGL
3.3
OpenCL
N/A
Vulkan
N/A
Shader Model
4.1

RV670 GPU Notes

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

RV670 Chip Numbers:
RV670 XT (215-0708017)
RV670 XTX ES (215-0708001)

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