9
ASRock 990FX Extreme3 Motherboard
English
CAUTION!
1. ASRock UCC (Unlock CPU Core) feature simplifies AMD CPU activa-
tion. Via a simple switch in the UEFI option “ASRock UCC”, you can
unlock the extra CPU core to enjoy an instant performance boost. When
UCC feature is enabled, the dual-core or triple-core CPU will boost to
the quad-core CPU, and some CPU, including quad-core CPU, can also
increase L3 cache size up to 6MB, which means you can enjoy the up-
grade CPU performance with a better price. Please be noted that UCC
feature is supported with AM3 CPU only, and in addition, not every AM3
CPU can support this function because some CPU’s hidden core may be
malfunctioned.
2. This motherboard supports Untied Overclocking Technology. Please read
“Untied Overclocking Technology” on page 33 for details.
3. This motherboard supports Dual Channel Memory Technology. Before
you implement Dual Channel Memory Technology, make sure to read the
installation guide of memory modules on page 14 for proper installation.
4. Whether 2100MHz memory speed is supported depends on the AM3/
AM3+ CPU you adopt. If you want to adopt DDR3 2100 memory module
on this motherboard, please refer to the memory support list on our web-
site for the compatible memory modules. Non OC mode’s DDR3 1866 is
supported by AM3+ CPU.
ASRock website http://www.asrock.com
5. Due to the operating system limitation, the actual memory size may be
less than 4GB for the reservation for system usage under Windows
®
7 /
Vista
TM
/ XP. For Windows
®
64-bit OS with 64-bit CPU, there is no such
limitation.
6. For microphone input, this motherboard supports both stereo and mono
modes. For audio output, this motherboard supports 2-channel, 4-chan-
nel, 6-channel, and 8-channel modes. Please check the table on page 3
for proper connection.
7. ASRock Extreme Tuning Utility (AXTU) is an all-in-one tool to ne-tune dif-
ferent system functions in a user-friendly interface, which includes Hard-
ware Monitor, Fan Control, Overclocking, OC DNA and IES. In Hardware
Monitor, it shows the major readings of your system. In Fan Control, it
shows the fan speed and temperature for you to adjust. In Overclocking,
you are allowed to overclock CPU frequency for optimal system per-
formance. In OC DNA, you can save your OC settings as a profile and
share it with your friends. Your friends then can load the OC profile to
WARNING
Please realize that there is a certain risk involved with overclocking, including adjusting the
setting in the BIOS, applying Untied Overclocking Technology, or using third-party overclock-
ing tools. Overclocking may affect your system’s stability, or even cause damage to the
components and devices of your system. It should be done at your own risk and expense.
We are not responsible for possible damage caused by overclocking.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
