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AMD Radeon HD 6790

Graphics Processor
Barts
Cores
800
TMUs
40
ROPs
16
Memory Size
1024 MB
Memory Type
GDDR5
Bus Width
256 bit
The Radeon HD 6790 was a mid-range graphics card by AMD, launched in April 2011. Built on the 40 nm process, and based on the Barts graphics processor, in its Barts LE 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. Unlike the fully unlocked Radeon HD 6870, which uses the same GPU but has all 1120 shaders enabled, AMD has disabled some shading units on the Radeon HD 6790 to reach the product's target shader count. It features 800 shading units, 40 texture mapping units and 16 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 840 MHz, memory is running at 1050 MHz.
Being a dual-slot card, the AMD Radeon HD 6790 draws power from 2x 6-pin power connectors, with power draw rated at 150 W maximum. Display outputs include: 2x DVI, 1x HDMI, 1x DisplayPort. Radeon HD 6790 is connected to the rest of the system using a PCI-Express 2.0 x16 interface. The card measures 198 mm in length, and features a dual-slot cooling solution. Its price at launch was 149 US Dollars.

Graphics Processor

GPU Name
Barts
GPU Variant
Barts LE
(215-0798002)
Architecture
TeraScale 2
Foundry
TSMC
Process Size
40 nm
Transistors
1,700 million
Die Size
255 mm²

Graphics Card

Release Date
Apr 4th, 2011
Generation
Northern Islands
(HD 6700)
Production
End-of-life
Launch Price
149 USD
Bus Interface
PCIe 2.0 x16
Reviews
37 in our database

Relative Performance

9%
GeForce 210
11%
GeForce 9400 GT
14%
Radeon HD 4550
18%
Radeon HD 5450
21%
Radeon HD 6450
22%
GeForce GT 520
27%
GeForce GT 220
35%
GeForce GT 430
36%
Radeon HD 5570
39%
Radeon HD 4670
41%
GeForce GT 440
42%
GeForce GT 240
48%
GeForce 9600 GT
51%
Radeon HD 5670
55%
GeForce GT 640
56%
GeForce 9800 GT
59%
Radeon HD 6670
60%
Radeon HD 4830
65%
Radeon HD 4770
68%
Radeon HD 4850
70%
GeForce GTS 250
72%
GeForce GTS 450
74%
Radeon HD 5750
85%
Radeon HD 7750
85%
Radeon HD 5770
87%
GeForce GTX 260
88%
Radeon HD 4870
88%
Radeon Vega 8
89%
GeForce GTX 550 Ti
90%
GeForce GTX 650
95%
Radeon HD 5830
100%
Radeon HD 6790
102%
Radeon HD 4890
105%
GeForce GTX 460
106%
Radeon RX Vega 11
107%
GeForce GT 1030
108%
GeForce GTX 275
109%
Radeon HD 7770 GHz Edition
109%
GeForce GTX 280
111%
GeForce GTX 465
116%
Radeon HD 6850
119%
GeForce GTX 285
127%
Radeon HD 5850
129%
GeForce GTX 650 Ti
129%
Radeon HD 7790
135%
Radeon RX 550
135%
GeForce GTX 470
140%
Radeon HD 6870
150%
Radeon HD 5870
154%
GeForce GTX 560 Ti
155%
Radeon HD 4870 X2
158%
GeForce GTX 750 Ti
159%
Radeon HD 6950
164%
GeForce GTX 295
166%
GeForce GTX 650 Ti Boost
167%
Radeon HD 7850
170%
GeForce GTX 480
178%
Radeon HD 6970
182%
Radeon R7 265
185%
Radeon RX 460
185%
Radeon R7 370
185%
GeForce GTX 660
186%
GeForce GTX 570
189%
Radeon RX 560
201%
GeForce GTX 950
202%
Radeon HD 7870 GHz Edition
207%
Radeon R9 270X
210%
GeForce GTX 660 Ti
211%
GeForce GTX 580
212%
GeForce GTX 1050
213%
Radeon HD 7950
217%
Radeon HD 5970
223%
GeForce GTX 760
240%
GeForce GTX 670
247%
GeForce GTX 960
253%
Radeon R9 380
254%
Radeon R9 285
257%
Radeon HD 7970
260%
GeForce GTX 680
266%
GeForce GTX 1050 Ti
273%
GeForce GTX 770
279%
Radeon HD 6990
285%
Radeon R9 280X
290%
GeForce GTX 590
290%
Radeon HD 7970 GHz Edition
321%
GeForce GTX 780
332%
GeForce GTX 1650
353%
Radeon RX 470
358%
Radeon R9 290
377%
Radeon RX 570
382%
Radeon R9 390
384%
Radeon R9 290X
389%
GeForce GTX 970
394%
GeForce GTX TITAN
400%
GeForce GTX 780 Ti
405%
Radeon R9 390X
407%
Radeon HD 7990
409%
Radeon RX 480
413%
GeForce GTX 690
435%
Radeon RX 580
444%
GeForce GTX 980
449%
Radeon R9 FURY
449%
GeForce GTX 1060 6 GB
469%
Radeon RX 590
494%
Radeon R9 295X2
497%
GeForce GTX 1660
503%
Radeon R9 FURY X
511%
GeForce GTX 980 Ti
525%
GeForce GTX TITAN X
571%
GeForce GTX 1660 Ti
571%
GeForce GTX 1070
608%
Radeon RX Vega 56
644%
GeForce GTX 1070 Ti
663%
Radeon RX Vega 64
672%
GeForce GTX 1080
672%
GeForce RTX 2060
700%
Radeon RX 5700
755%
GeForce RTX 2060 SUPER
782%
GeForce RTX 2070
801%
Radeon RX 5700 XT
810%
Radeon VII
831%
TITAN X Pascal
856%
GeForce GTX 1080 Ti
865%
GeForce RTX 2070 SUPER
921%
GeForce RTX 2080
976%
GeForce RTX 2080 SUPER
1077%
GeForce RTX 2080 Ti
Based on TPU review data: "Performance Summary" at 1920x1080

Clock Speeds

GPU Clock
840 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
800
TMUs
40
ROPs
16
Compute Units
10
L1 Cache
16 KB (per CU)
L2 Cache
512 KB

Theoretical Performance

Pixel Rate
13.44 GPixel/s
Texture Rate
33.60 GTexel/s
FP32 (float) performance
1,344 GFLOPS

Board Design

Slot Width
Dual-slot
Length
7.8 inches
198 mm
TDP
150 W
Suggested PSU
350 W
Outputs
2x DVI
1x HDMI
1x DisplayPort
Power Connectors
2x 6-pin
Board Number
C220,
C222

Graphics Features

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

Barts GPU Notes

Architecture Codename: Northern Islands
Codename: Victoria
Graphics/Compute: GFX4
Display Core Engine: 5.0
Unified Video Decoder: 3.1

Retail boards based on this design (9)

Name GPU Clock Memory Clock Other Changes
HIS HD 6790 Fan 840 MHz 1050 MHz 9.055 inches/230 mm
HIS HD 6790 IceQ X 840 MHz 1050 MHz 9.25 inches/235 mm, 2x DVI 1x HDMI 2x mini-DisplayPort
HIS HD 6790 IceQ X Turbo 900 MHz 1100 MHz 9.25 inches/235 mm, 2x DVI 1x HDMI 2x mini-DisplayPort
MSI HD 6790 OC 920 MHz 1050 MHz 9.095 inches/231 mm
Sapphire HD 6790 840 MHz 1050 MHz 9.5 inches/241 mm
Sapphire HD 6790 840 MHz 1050 MHz 9.84 inches/250 mm, 1x DVI 1x HDMI 1x DisplayPort
XFX Double D HD 6790 840 MHz 1050 MHz 10.3 inches/262 mm, 2x DVI 1x HDMI 2x mini-DisplayPort
XFX HD 6790 840 MHz 1050 MHz 9.25 inches/235 mm, 2x DVI 1x HDMI 2x mini-DisplayPort
XFX HD 6790 840 MHz 1050 MHz 8.66 inches/220 mm, 2x DVI 1x HDMI 2x mini-DisplayPort