Gigabyte GA-870A-UD3 Manual - Page 38

PCIe Spread Spectrum, HT Link Frequency, Set Memory Clock, DCTs Mode, DDR3 Timing Items, CAS# latency

Page 38 highlights

PCIe Spread Spectrum Enables or disables PCIe Spread Spectrum. (Default: Disabled) HT Link Frequency Allows you to manually set the frequency for the HT Link between the CPU and chipset. Auto BIOS will automatically adjust the HT Link Frequency. (Default) x1~x10 Sets HT Link Frequency to x1~x10 (200 MHz~2.0 GHz). Set Memory Clock Determines whether to manually set the memory clock. Auto lets BIOS automatically set the memory clock as required. Manual allows the memory clock control item below to be configurable. (Default: Auto) Memory Clock This option is configurable only when Set Memory Clock is set to Manual. X4.00 Sets Memory Clock to X4.00. X5.33 Sets Memory Clock to X5.33. X6.66 Sets Memory Clock to X6.66. X8.00 Sets Memory Clock to X8.00. DRAM Configuration CMOS Setup Utility-Copyright (C) 1984-2010 Award Software DRAM Configuration DCTs Mode DDR3 Timing Items x CAS# latency x RAS to CAS R/W Delay x Row Precharge Time x Minimum RAS Active Time x 1T/2T Command Timing x TwTr Command Delay x Trfc0 for DIMM1 x Trfc2 for DIMM2 x Trfc1 for DIMM3 x Trfc3 for DIMM4 x Write Recovery Time x Precharge Time x Row Cycle Time x RAS to RAS Delay [Unganged] [Auto] SPD Auto 7T Auto 7T Auto 7T Auto 30T Auto -- Auto 5T Auto 90ns Auto -- Auto -- Auto -- Auto 10T Auto 5T Auto 28T Auto 4T Auto 7T 7T 7T 30T -5T 90ns ---10T 5T 28T 4T Item Help Menu Level  Bank interleaving Channel interleave Move Enter: Select F5: Previous Values [Enabled] [Enabled] +/-/PU/PD: Value F10: Save F6: Fail-Safe Defaults ESC: Exit F1: General Help F7: Optimized Defaults DCTs Mode Allows you to set memory control mode. Ganged Sets memory control mode to single dual-channel. Unganged Sets memory control mode to two single-channel. (Default) DDR3 Timing Items Manual allows all DDR3 Timing items below to be configurable. Options are: Auto (default), Manual. CAS# latency Options are: Auto (default), 4T~12T. BIOS Setup - 38 -

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BIOS Setup
- 38 -
PCIe Spread Spectrum
Enables or disables PCIe Spread Spectrum. (Default: Disabled)
HT Link Frequency
Allows you to manually set the frequency for the HT Link between the CPU and chipset.
Auto
BIOS will automatically adjust the HT Link Frequency. (Default)
x1~x10
Sets HT Link Frequency to x1~x10 (200 MHz~2.0 GHz).
Set Memory Clock
Determines whether to manually set the memory clock.
Auto
lets BIOS automatically set the memory
clock as required.
Manual
allows the memory clock control item below to be configurable. (Default: Auto)
Memory Clock
This option is configurable only when
Set Memory Clock
is set to
Manual
.
X4.00
Sets Memory Clock to X4.00.
X5.33
Sets Memory Clock to X5.33.
X6.66
Sets Memory Clock to X6.66.
X8.00
Sets Memory Clock to X8.00.
DRAM Configuration
CMOS Setup Utility-Copyright (C) 1984-2010 Award Software
DRAM Configuration
higf
: Move
Enter: Select
+/-/PU/PD: Value
F10: Save
ESC: Exit
F1: General Help
F5: Previous Values
F6: Fail-Safe Defaults
F7: Optimized Defaults
Item Help
Menu Level

DCTs Mode
[Unganged]
DDR3 Timing Items
[Auto]
SPD
Auto
x
CAS# latency
Auto
7T
7T
x
RAS to CAS R/W Delay
Auto
7T
7T
x
Row Precharge Time
Auto
7T
7T
x
Minimum RAS Active Time
Auto
30T
30T
x
1T/2T Command Timing
Auto
--
--
x
TwTr Command Delay
Auto
5T
5T
x
Trfc0 for DIMM1
Auto
90ns
90ns
x
Trfc2 for DIMM2
Auto
--
--
x
Trfc1 for DIMM3
Auto
--
--
x
Trfc3 for DIMM4
Auto
--
--
x
Write Recovery Time
Auto
10T
10T
x
Precharge Time
Auto
5T
5T
x
Row Cycle Time
Auto
28T
28T
x
RAS to RAS Delay
Auto
4T
4T
Bank interleaving
[Enabled]
Channel interleave
[Enabled]
DCTs Mode
Allows you to set memory control mode.
Ganged
Sets memory control mode to single dual-channel.
Unganged
Sets memory control mode to two single-channel. (Default)
DDR3 Timing Items
Manual
allows all DDR3 Timing items below to be configurable.
Options are: Auto (default), Manual.
CAS# latency
Options are: Auto (default), 4T~12T.