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Need to enable DDR2 1066 for a Gigabyte board

post #1 of 5
Thread Starter 
Hello all,

I've got a Gigabyte GA-EG45M-UD2h mobo that runs DDR2 memory. According to the specs, it provides "Support for DDR2 1066(O.C.)/800/667 MHz memory modules." Recently I bought some PC2-8500 Kingston HyperX RAM DIMMs (KHX8500D2K2/4G), plugged them in, and the BIOS has defaulted them to 800Mhz @ 1.8v. They have been running very stable in this config and passed Memtest86+.

It appears I need to "overclock" to get them to their rated speeds, which is 1066Mhz with latency of 5-5-5-15 @ 2.2v. I don't want to OC the Q9550 CPU to do so, because the case cooling situation isn't ideal for that. I just want the RAM to be at stock rated speed+timings. I'm having trouble putting all this information about ratios, FSB, multipliers etc together into a safe result. Attached are some screenies of my BIOS settings.

Defaults/Auto




Setting the MCH Frequency Latch to FSB 333Mhz, it's not giving me the required multiplier to reach 1066Mhz. I've gathered that a 1:1 ratio is ideal...?


What do I do? Any help is greatly appreciated.
post #2 of 5
What are your strapping options under the SPD?
Beast of Burden
(19 items)
 
Cool story, bro!
(16 items)
 
 
CPUMotherboardGraphicsRAM
i7 3770k Gigabyte Z77X-UD5H Gigabyte HD 7970 Reference Ripjaws Z 
Hard DriveHard DriveOptical DriveCooling
Crucial M4 Caviar Black ASUS DVD XSPC Raystorm 
CoolingCoolingCoolingOS
EK FC-7970 w/ Backplate Copper/Acetal RX360 w/ 3x Yate Loon High Speed in Push XSPC Dual Bay Res w/ D5 Pump Windows 7 
MonitorMonitorKeyboardPower
ASUS VE226H ASUS VE226H Cooler Master Quickfire Rapid Corsair HX850 
CaseMouseMouse Pad
HAF 932 Advanced Razer Deathadder QcK Mini 
CPUMotherboardGraphicsRAM
Q9550@ 3.5GHz w/ 1.191v Gigabyte GA-EP45-UD3P Sapphire Reference 5850 @ 775/1100 G.SKILL 4GB (2 x 2GB) DDR2 1066 
Hard DriveHard DriveHard DriveOptical Drive
Crucial C300 Spinpoint F3 Caviar Black ASUS DVD-RW 
CoolingOSMonitorKeyboard
Arctic Cooling Freezer 7 Pro Windows 7 Home Premium 64-bit Samsung 23" Saitek Eclipse III 
PowerCaseMouse
Corsair 430W NZXT Source 210 Wolf King 
  hide details  
Reply
Beast of Burden
(19 items)
 
Cool story, bro!
(16 items)
 
 
CPUMotherboardGraphicsRAM
i7 3770k Gigabyte Z77X-UD5H Gigabyte HD 7970 Reference Ripjaws Z 
Hard DriveHard DriveOptical DriveCooling
Crucial M4 Caviar Black ASUS DVD XSPC Raystorm 
CoolingCoolingCoolingOS
EK FC-7970 w/ Backplate Copper/Acetal RX360 w/ 3x Yate Loon High Speed in Push XSPC Dual Bay Res w/ D5 Pump Windows 7 
MonitorMonitorKeyboardPower
ASUS VE226H ASUS VE226H Cooler Master Quickfire Rapid Corsair HX850 
CaseMouseMouse Pad
HAF 932 Advanced Razer Deathadder QcK Mini 
CPUMotherboardGraphicsRAM
Q9550@ 3.5GHz w/ 1.191v Gigabyte GA-EP45-UD3P Sapphire Reference 5850 @ 775/1100 G.SKILL 4GB (2 x 2GB) DDR2 1066 
Hard DriveHard DriveHard DriveOptical Drive
Crucial C300 Spinpoint F3 Caviar Black ASUS DVD-RW 
CoolingOSMonitorKeyboard
Arctic Cooling Freezer 7 Pro Windows 7 Home Premium 64-bit Samsung 23" Saitek Eclipse III 
PowerCaseMouse
Corsair 430W NZXT Source 210 Wolf King 
  hide details  
Reply
post #3 of 5
Thread Starter 
With everything else on Auto and not selecting a specific MCH frequency, I get the following options in SPD/System Memory Multiplier:

2.00B
2.40B
2.00D
2.66C
3.33C
4.00C
2.50A
3.00A
post #4 of 5
Quote:
Originally Posted by warpz0ne View Post

With everything else on Auto and not selecting a specific MCH frequency, I get the following options in SPD/System Memory Multiplier:

2.00B
2.40B
2.00D
2.66C
3.33C
4.00C
2.50A
3.00A

I'd attempt one of two things if I were you... 3.33 (slight OC, 1100mhz or so) or 3.00 (slight underclock, 1000mhz). You won't really notice the difference.

The other option is checking gigabyte's web page and flashing your motherboard's BIOS to the latest, it might add the proper RAM support that brings that to 1066 by default.

The RAM frequency doesn't make nearly as much difference as we'd like it to... seems to be more so for benchmarking than real world performance.
Beast of Burden
(19 items)
 
Cool story, bro!
(16 items)
 
 
CPUMotherboardGraphicsRAM
i7 3770k Gigabyte Z77X-UD5H Gigabyte HD 7970 Reference Ripjaws Z 
Hard DriveHard DriveOptical DriveCooling
Crucial M4 Caviar Black ASUS DVD XSPC Raystorm 
CoolingCoolingCoolingOS
EK FC-7970 w/ Backplate Copper/Acetal RX360 w/ 3x Yate Loon High Speed in Push XSPC Dual Bay Res w/ D5 Pump Windows 7 
MonitorMonitorKeyboardPower
ASUS VE226H ASUS VE226H Cooler Master Quickfire Rapid Corsair HX850 
CaseMouseMouse Pad
HAF 932 Advanced Razer Deathadder QcK Mini 
CPUMotherboardGraphicsRAM
Q9550@ 3.5GHz w/ 1.191v Gigabyte GA-EP45-UD3P Sapphire Reference 5850 @ 775/1100 G.SKILL 4GB (2 x 2GB) DDR2 1066 
Hard DriveHard DriveHard DriveOptical Drive
Crucial C300 Spinpoint F3 Caviar Black ASUS DVD-RW 
CoolingOSMonitorKeyboard
Arctic Cooling Freezer 7 Pro Windows 7 Home Premium 64-bit Samsung 23" Saitek Eclipse III 
PowerCaseMouse
Corsair 430W NZXT Source 210 Wolf King 
  hide details  
Reply
Beast of Burden
(19 items)
 
Cool story, bro!
(16 items)
 
 
CPUMotherboardGraphicsRAM
i7 3770k Gigabyte Z77X-UD5H Gigabyte HD 7970 Reference Ripjaws Z 
Hard DriveHard DriveOptical DriveCooling
Crucial M4 Caviar Black ASUS DVD XSPC Raystorm 
CoolingCoolingCoolingOS
EK FC-7970 w/ Backplate Copper/Acetal RX360 w/ 3x Yate Loon High Speed in Push XSPC Dual Bay Res w/ D5 Pump Windows 7 
MonitorMonitorKeyboardPower
ASUS VE226H ASUS VE226H Cooler Master Quickfire Rapid Corsair HX850 
CaseMouseMouse Pad
HAF 932 Advanced Razer Deathadder QcK Mini 
CPUMotherboardGraphicsRAM
Q9550@ 3.5GHz w/ 1.191v Gigabyte GA-EP45-UD3P Sapphire Reference 5850 @ 775/1100 G.SKILL 4GB (2 x 2GB) DDR2 1066 
Hard DriveHard DriveHard DriveOptical Drive
Crucial C300 Spinpoint F3 Caviar Black ASUS DVD-RW 
CoolingOSMonitorKeyboard
Arctic Cooling Freezer 7 Pro Windows 7 Home Premium 64-bit Samsung 23" Saitek Eclipse III 
PowerCaseMouse
Corsair 430W NZXT Source 210 Wolf King 
  hide details  
Reply
post #5 of 5
Thread Starter 
Unfortunately those two settings seemed to be unstable. 1100Mhz was a quick bluescreen, and 1000Mhz caused a power cycle and then BIOS defaulted to 800Mhz.

I'm trying some new settings with a slight OC of the CPU. How does this look?

CPU Host Freq. 400Mhz
CPU Clock Ratio/Multiplier 7.5
400x 7.5 = 3.00Ghz (vs. 2.83Ghz stock)

System Memory Multiplier 2.66C (C normally being for 200Mhz FSB)
Resulting Memory Frequency 1066Mhz
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