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AMD Radeon HD 6870

Graphics Processor
Barts
Cores
1120
TMUs
56
ROPs
32
Memory Size
1024 MB
Memory Type
GDDR5
Bus Width
256 bit
The Radeon HD 6870 was a performance graphics card by AMD, launched in October 2010. Built on the 40 nm process, and based on the Barts graphics processor, in its Barts XT variant, the card supports DirectX 11.2. The Barts graphics processor is an average sized chip with a die area of 255 mm² and 1,700 million transistors. It features 1120 shading units, 56 texture mapping units and 32 ROPs. AMD has placed 1,024 MB GDDR5 memory on the card, which are connected using a 256-bit memory interface. The GPU is operating at a frequency of 900 MHz, memory is running at 1050 MHz.
Being a dual-slot card, the AMD Radeon HD 6870 draws power from 2x 6-pin power connectors, with power draw rated at 151 W maximum. Display outputs include: 2x DVI, 1x HDMI, 2x mini-DisplayPort. Radeon HD 6870 is connected to the rest of the system using a PCI-Express 2.0 x16 interface. The card measures 220 mm in length, and features a dual-slot cooling solution. Its price at launch was 239 US Dollars.

Graphics Processor

GPU Name
Barts
GPU Variant
Barts XT
(215-0798000)
Architecture
TeraScale 2
Foundry
TSMC
Process Size
40 nm
Transistors
1,700 million
Die Size
255 mm²

Graphics Card

Release Date
Oct 21st, 2010
Generation
Northern Islands
(HD 6800)
Production
End-of-life
Launch Price
239 USD
Bus Interface
PCIe 2.0 x16

Relative Performance

6%
GeForce 210
8%
GeForce 9400 GT
10%
Radeon HD 4550
13%
Radeon HD 5450
15%
Radeon HD 6450
16%
GeForce GT 520
19%
GeForce GT 220
25%
GeForce GT 430
25%
Radeon HD 5570
28%
Radeon HD 4670
29%
GeForce GT 440
30%
GeForce GT 240
34%
GeForce 9600 GT
36%
Radeon HD 5670
39%
GeForce GT 640
40%
GeForce 9800 GT
42%
Radeon HD 6670
43%
Radeon HD 4830
46%
Radeon HD 4770
49%
Radeon HD 4850
50%
GeForce GTS 250
51%
GeForce GTS 450
53%
Radeon HD 5750
60%
Radeon HD 7750
61%
Radeon HD 5770
62%
GeForce GTX 260
63%
Radeon HD 4870
63%
Radeon Vega 8
64%
GeForce GTX 550 Ti
64%
GeForce GTX 650
68%
Radeon HD 5830
71%
Radeon HD 6790
73%
Radeon HD 4890
75%
GeForce GTX 460
76%
Radeon RX Vega 11
77%
GeForce GT 1030
77%
GeForce GTX 275
78%
Radeon HD 7770 GHz Edition
78%
GeForce GTX 280
79%
GeForce GTX 465
83%
Radeon HD 6850
85%
GeForce GTX 285
91%
Radeon HD 5850
92%
Radeon HD 7790
92%
GeForce GTX 650 Ti
96%
Radeon RX 550
97%
GeForce GTX 470
100%
Radeon HD 6870
107%
Radeon HD 5870
110%
GeForce GTX 560 Ti
111%
Radeon HD 4870 X2
113%
GeForce GTX 750 Ti
113%
Radeon HD 6950
117%
GeForce GTX 295
119%
GeForce GTX 650 Ti Boost
119%
Radeon HD 7850
121%
GeForce GTX 480
127%
Radeon HD 6970
130%
Radeon R7 265
132%
Radeon R7 370
132%
Radeon RX 560
132%
GeForce GTX 660
133%
GeForce GTX 570
143%
GeForce GTX 950
144%
Radeon HD 7870 GHz Edition
148%
Radeon R9 270X
150%
GeForce GTX 660 Ti
150%
GeForce GTX 580
152%
GeForce GTX 1050
152%
Radeon HD 7950
155%
Radeon RX 460
155%
Radeon HD 5970
159%
GeForce GTX 760
171%
GeForce GTX 670
176%
GeForce GTX 960
180%
Radeon R9 380
181%
Radeon R9 285
183%
Radeon HD 7970
185%
GeForce GTX 680
189%
GeForce GTX 1050 Ti
194%
GeForce GTX 770
199%
Radeon HD 6990
204%
Radeon R9 280X
207%
GeForce GTX 590
207%
Radeon HD 7970 GHz Edition
229%
GeForce GTX 780
252%
Radeon RX 470
255%
Radeon R9 290
273%
Radeon R9 390
274%
Radeon R9 290X
278%
GeForce GTX 970
281%
GeForce GTX TITAN
284%
Radeon RX 570
285%
GeForce GTX 780 Ti
289%
Radeon R9 390X
291%
Radeon HD 7990
292%
Radeon RX 480
294%
GeForce GTX 690
310%
Radeon RX 580
317%
GeForce GTX 980
321%
Radeon R9 FURY
321%
GeForce GTX 1060 6 GB
353%
Radeon R9 295X2
359%
Radeon R9 FURY X
365%
GeForce GTX 980 Ti
392%
GeForce GTX TITAN X
431%
GeForce GTX 1070
446%
Radeon RX Vega 56
480%
GeForce GTX 1070 Ti
480%
Radeon RX Vega 64
507%
GeForce GTX 1080
566%
GeForce RTX 2070
593%
TITAN X Pascal
608%
GeForce GTX 1080 Ti
663%
GeForce RTX 2080
754%
GeForce RTX 2080 Ti
Based on TPU review data: "Performance Summary" at 1920x1080

Clock Speeds

GPU Clock
900 MHz
Memory Clock
1050 MHz
4200 MHz effective

Memory

Memory Size
1024 MB
Memory Type
GDDR5
Memory Bus
256 bit
Bandwidth
134.4 GB/s

Render Config

Shading Units
1120
TMUs
56
ROPs
32
Compute Units
14

Theoretical Performance

Pixel Rate
28.80 GPixel/s
Texture Rate
50.40 GTexel/s
FP32 (float) performance
2,016 GFLOPS

Board Design

Slot Width
Dual-slot
Length
8.66 inches
220 mm
TDP
151 W
Outputs
2x DVI
1x HDMI
2x mini-DisplayPort
Power Connectors
2x 6-pin
Board Number
C222

Graphics Features

DirectX
11.2 (11_0)
OpenGL
4.4
OpenCL
1.2
Vulkan
N/A
Shader Model
5.0

Barts GPU Notes

Graphics/Compute: GFX4
Display Core Engine: 5.0
Unified Video Decoder: 3.1

Retail boards based on this design (17)

Name GPU Clock Memory Clock Other Changes
ASUS HD 6870 DirectCU 915 MHz 1050 MHz 11 inches/279 mm, 2x DVI 2x DisplayPort
GIGABYTE HD 6870 OC 915 MHz 1050 MHz 11.42 inches/290 mm
GIGABYTE HD 6870 SOC 950 MHz 1100 MHz 11.42 inches/290 mm
HIS HD 6870 Fan Turbo 920 MHz 1120 MHz 10.315 inches/262 mm
HIS HD 6870 IceQ X Turbo 920 MHz 1120 MHz 10.236 inches/260 mm
HIS HD 6870 IceQ X Turbo X 975 MHz 1150 MHz 10.236 inches/260 mm
MSI HD 6870 Hawk 930 MHz 1050 MHz 10.04 inches/255 mm
MSI HD 6870 OC 2 GB 920 MHz 1050 MHz 2 GB, 9.646 inches/245 mm
MSI HD 6870 Twin Frozr II OC 920 MHz 1050 MHz 9.646 inches/245 mm
Sapphire HD 6870 Dirt3 Edition 920 MHz 1050 MHz 9.64 inches/245 mm
Sapphire HD 6870 FleX 900 MHz 1050 MHz 9.84 inches/250 mm
Sapphire HD 6870 Toxic 970 MHz 1150 MHz 9.37 inches/238 mm
Sapphire HD 6870 Vapor-X 900 MHz 1050 MHz 9.37 inches/238 mm
VTX3D HD 6870 V2 900 MHz 1050 MHz
XFX Double D HD 6870 2 GB 900 MHz 1050 MHz 2 GB, 10.3 inches/262 mm
XFX Double D HD 6870 XXX Edition 925 MHz 1050 MHz 10.3 inches/262 mm
Yeston HD 6870 Game Master 940 MHz 1100 MHz 10.12 inches/257 mm, 1x DVI 1x HDMI 2x mini-DisplayPort