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AMD Radeon HD 6990

Graphics Processor
Antilles x2
Cores
1536 x2
TMUs
96 x2
ROPs
32 x2
Memory Size
2 GB x2
Memory Type
GDDR5
Bus Width
256 bit x2
GPU Chip
GPU
PCB Front
PCB Front
PCB Back
PCB Back
The Radeon HD 6990 was a enthusiast-class graphics card by AMD, launched in March 2011. Built on the 40 nm process, and based on the Antilles graphics processor, in its Antilles XT variant, the card supports DirectX 11.2. The Antilles graphics processor is a large chip with a die area of 389 mm² and 2,640 million transistors. Radeon HD 6990 combines two graphics processors to increase performance. It features 1536 shading units, 96 texture mapping units and 32 ROPs per GPU. AMD has placed 4,096 MB GDDR5 memory on the card, which are connected using a 256-bit memory interface per GPU (each GPU manages 2,048 MB). The GPU is operating at a frequency of 830 MHz, memory is running at 1250 MHz.
Being a dual-slot card, the AMD Radeon HD 6990 draws power from 2x 8-pin power connectors, with power draw rated at 375 W maximum. Display outputs include: 1x DVI, 4x mini-DisplayPort. Radeon HD 6990 is connected to the rest of the system using a PCI-Express 2.0 x16 interface. The card measures 295 mm in length, and features a dual-slot cooling solution. Its price at launch was 699 US Dollars.

Graphics Processor

GPU Name
Antilles
GPU Variant
Antilles XT
(215-0807027)
Architecture
TeraScale 3
Foundry
TSMC
Process Size
40 nm
Transistors
2,640 million
Die Size
389 mm²

Graphics Card

Release Date
Mar 8th, 2011
Generation
Northern Islands
(HD 6900)
Production
End-of-life
Launch Price
699 USD
Bus Interface
PCIe 2.0 x16
Reviews
47 in our database

Relative Performance

3%
GeForce 210
4%
GeForce 9400 GT
5%
Radeon HD 4550
6%
Radeon HD 5450
7%
Radeon HD 6450
8%
GeForce GT 520
10%
GeForce GT 220
13%
GeForce GT 430
13%
Radeon HD 5570
14%
Radeon HD 4670
15%
GeForce GT 440
15%
GeForce GT 240
17%
GeForce 9600 GT
18%
Radeon HD 5670
20%
GeForce GT 640
20%
GeForce 9800 GT
21%
Radeon HD 6670
22%
Radeon HD 4830
23%
Radeon HD 4770
24%
Radeon HD 4850
25%
GeForce GTS 250
26%
GeForce GTS 450
27%
Radeon HD 5750
30%
Radeon HD 7750
31%
Radeon HD 5770
31%
GeForce GTX 260
32%
Radeon HD 4870
32%
Radeon Vega 8
32%
GeForce GTX 550 Ti
32%
GeForce GTX 650
34%
Radeon HD 5830
36%
Radeon HD 6790
36%
Radeon HD 4890
38%
GeForce GTX 460
38%
Radeon RX Vega 11
38%
GeForce GT 1030
39%
GeForce GTX 275
39%
Radeon HD 7770 GHz Edition
39%
GeForce GTX 280
40%
GeForce GTX 465
42%
Radeon HD 6850
42%
GeForce GTX 285
46%
Radeon HD 5850
46%
GeForce GTX 650 Ti
46%
Radeon HD 7790
48%
Radeon RX 550
49%
GeForce GTX 470
50%
Radeon HD 6870
54%
Radeon HD 5870
55%
GeForce GTX 560 Ti
56%
Radeon HD 4870 X2
57%
GeForce GTX 750 Ti
57%
Radeon HD 6950
59%
GeForce GTX 295
60%
GeForce GTX 650 Ti Boost
60%
Radeon HD 7850
61%
GeForce GTX 480
64%
Radeon HD 6970
65%
Radeon R7 265
66%
Radeon RX 460
66%
Radeon R7 370
66%
GeForce GTX 660
67%
GeForce GTX 570
68%
Radeon RX 560
72%
GeForce GTX 950
73%
Radeon HD 7870 GHz Edition
74%
Radeon R9 270X
75%
GeForce GTX 660 Ti
76%
GeForce GTX 580
76%
GeForce GTX 1050
76%
Radeon HD 7950
78%
Radeon HD 5970
80%
GeForce GTX 760
86%
GeForce GTX 670
88%
GeForce GTX 960
91%
Radeon R9 380
91%
Radeon R9 285
92%
Radeon HD 7970
93%
GeForce GTX 680
95%
GeForce GTX 1050 Ti
98%
GeForce GTX 770
100%
Radeon HD 6990
102%
Radeon R9 280X
104%
GeForce GTX 590
104%
Radeon HD 7970 GHz Edition
115%
GeForce GTX 780
119%
GeForce GTX 1650
127%
Radeon RX 470
128%
Radeon R9 290
135%
Radeon RX 570
137%
Radeon R9 390
138%
Radeon R9 290X
140%
GeForce GTX 970
141%
GeForce GTX TITAN
143%
GeForce GTX 780 Ti
145%
Radeon R9 390X
146%
Radeon HD 7990
147%
Radeon RX 480
148%
GeForce GTX 690
156%
Radeon RX 580
159%
GeForce GTX 980
161%
Radeon R9 FURY
161%
GeForce GTX 1060 6 GB
168%
Radeon RX 590
177%
Radeon R9 295X2
178%
GeForce GTX 1660
180%
Radeon R9 FURY X
183%
GeForce GTX 980 Ti
188%
GeForce GTX TITAN X
205%
GeForce GTX 1660 Ti
205%
GeForce GTX 1070
218%
Radeon RX Vega 56
231%
GeForce GTX 1070 Ti
238%
Radeon RX Vega 64
241%
GeForce GTX 1080
241%
GeForce RTX 2060
251%
Radeon RX 5700
271%
GeForce RTX 2060 SUPER
281%
GeForce RTX 2070
287%
Radeon RX 5700 XT
291%
Radeon VII
298%
TITAN X Pascal
307%
GeForce GTX 1080 Ti
310%
GeForce RTX 2070 SUPER
330%
GeForce RTX 2080
350%
GeForce RTX 2080 SUPER
386%
GeForce RTX 2080 Ti
Based on TPU review data: "Performance Summary" at 1920x1080

Clock Speeds

GPU Clock
830 MHz
Memory Clock
1250 MHz
5000 MHz effective

Memory

Memory Size
2 GB
Memory Type
GDDR5
Memory Bus
256 bit
Bandwidth
160.0 GB/s

Render Config

Shading Units
1536
TMUs
96
ROPs
32
Compute Units
24
L1 Cache
16 KB (per CU)
L2 Cache
512 KB

Theoretical Performance

Pixel Rate
26.56 GPixel/s
Texture Rate
79.68 GTexel/s
FP32 (float) performance
2.550 TFLOPS
FP64 (double) performance
637.4 GFLOPS (1:4)

Board Design

Slot Width
Dual-slot
Length
11.61 inches
295 mm
TDP
375 W
Outputs
1x DVI
4x mini-DisplayPort
Power Connectors
2x 8-pin
Board Number
C206-47

Graphics Features

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

Antilles GPU Notes

Architecture Codename: Northern Islands
Chip Variant: Cayman
Graphics/Compute: GFX5
Display Core Engine: 5.0
Unified Video Decoder: 3.1

Retail boards based on this design (11)

Name GPU Clock Memory Clock Other Changes
ASUS HD 6990 830 MHz 1250 MHz 11.6 inches/295 mm
Club 3D HD 6990 830 MHz 1250 MHz 11.6 inches/295 mm
Diamond HD 6990 830 MHz 1250 MHz 11.6 inches/295 mm
GIGABYTE HD 6990 830 MHz 1250 MHz 11.6 inches/295 mm
HIS HD 6990 830 MHz 1250 MHz 11.6 inches/295 mm
MSI HD 6990 830 MHz 1250 MHz
PowerColor HD 6990 830 MHz 1250 MHz 11.6 inches/295 mm
PowerColor HD 6990 LCS 880 MHz 1250 MHz 12 inches/305 mm, Single-slot
Sapphire HD 6990 830 MHz 1250 MHz 11.6 inches/295 mm
VTX3D HD 6990 830 MHz 1250 MHz 11.6 inches/295 mm
XFX HD 6990 830 MHz 1250 MHz 11.6 inches/295 mm