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ASUS A88x-PRO with A10-7850. Problems With overclocking Memory.

post #1 of 5
Thread Starter 
Rig:
MB: Asus A88X-Pro
APU: A10-7850
PSU: ANTEC Earth Watt 650?
GPU 5770
Memory See below

So the board is great it automatically OC's my video card to 900MHz supper stable etc... blah blah blah...
I was surprised to see that the A10-7850 performe at 40% of a 5770 for mining it can do 90Khash vs the 5770 that does 220Khash

But there is no way for me to Overclock the memory.
Here is the Memory I have.
Crucial Ballistix Sport 16GB (2 x 8GB) DDR3 1600 (PC3 12800)
G.SKILL Ripjaws X Series 4GB (2 x 2GB) DDR3 1600 (PC3 12800)
CORSAIR XMS 4GB (2 x 2GB) 240-Pin DDR3 1600 (PC3 12800)

The Crucial Ballistix Sport have been up to 2333Mhz @ 1.65v when I had my main rig runnin at 4950Mhz (So mad I could not beat 5Ghz)
The other 2 G.Skill & Corsair I had running at at least 2133 on my main rig.

But with this board they will not even run at 1866. I have not tried raising the FSB as I have no need to OC the APU since this is my HTPC/Hyper-V manager for my servers.

Is there something I am missing?

PS: I am not a main Miner, this is just for fun on the side I just have it do it on it's spare time. Hell my 7950 is turned off 90% of the time.
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AMD FX 8350 GA-990FXA-UD3 AMD HD7950 Crucial Ballistix Sport 2x8GB 16GB 
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AMD FX 8350 GA-990FXA-UD3 AMD HD7950 Crucial Ballistix Sport 2x8GB 16GB 
Hard DriveOptical DriveCoolingOS
OCZ Agility 3 LG BD Burner Zalman Reserator + 360g/h External pump + 1 180... Windows 8 
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post #2 of 5
You may need to raise the northbridge setting to get that faster ram speed. On my board this is a different setting from the fsb, mine is at 2 ghz and my ram (rated for 2133) is running at 1866. I also had to manually edit my timings, voltages, disable a myriad of things as well. I'm not sure I've seen anyone running a Kaveri rig successfully start at 2133.

I'm running the same processor, as ASRock 88x + Killer motherboard, and 8 gigs of G.Skill 17000 (it's rated for 2133 but the 2133 labeled is a different sku.)
post #3 of 5
Thread Starter 
Thanks
So it's a Kavery thing good thing I did not buy 2400 ram since that is what the board supports.

I will try changing the NB and see if I can get up to 1866. I have never had problems overclocking my ram before. then again this is my first FM board. been using AM boards for a while now.
Main
(15 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX 8350 GA-990FXA-UD3 AMD HD7950 Crucial Ballistix Sport 2x8GB 16GB 
Hard DriveOptical DriveCoolingOS
OCZ Agility 3 LG BD Burner Zalman Reserator + 360g/h External pump + 1 180... Windows 8 
MonitorMonitorMonitorKeyboard
27" 1440p 26" 1080p 23" 1080p Logitech G510 
PowerCaseMouse
COOLER MASTER Silent Pro 600w None/Desk Logitech G9x 
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Main
(15 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX 8350 GA-990FXA-UD3 AMD HD7950 Crucial Ballistix Sport 2x8GB 16GB 
Hard DriveOptical DriveCoolingOS
OCZ Agility 3 LG BD Burner Zalman Reserator + 360g/h External pump + 1 180... Windows 8 
MonitorMonitorMonitorKeyboard
27" 1440p 26" 1080p 23" 1080p Logitech G510 
PowerCaseMouse
COOLER MASTER Silent Pro 600w None/Desk Logitech G9x 
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post #4 of 5
If you had gone with 2400 you'd have ram designed to run at that speed vs making something run faster. Like it or not that 1600 mhz ram is designed to run at 1600 not 2133. There's no guarantee it would run at that speed, kudos to you for getting it up there. If it helps I'll post up my personal settings for 1866 which should be a good start.

CPU voltage 1.25
NB Multiplier 10
NB speed 2000
GPU voltage 1.28125
GFX Clock 800
DRAM Voltage 1.625
APU VDDP 1.16


tCWL 9
tCL 11
tRCD 11
tRP 11
tRAS 30
CR 2
tRC 41
tWR 16
tRFC 300
tRRD 6
tWTR 8
tRTP 8
tFAW 26
Power down disabled
Core C6 disabled
Target TDP auto
Cool’n’quiet disabled
SVM disabled
CPU Throttle auto
IOMMU disabled
post #5 of 5
The RipjawsZ 2400C10 2x4 GB RAM is a great option, it has very low latency and a pretty good bandwidth with good overclocking headroom. It esp. good for APU
    
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CPUMotherboardGraphicsRAM
AMD FX-8150 ASUS M5A97 R2.0 AMD Radeon HD 6670 Corsair  
Hard DriveOptical DriveCoolingOS
Western Digital Caviar Blue Samsung Super WriteMaster AMD FX-8150 Stock Air Cooler Windows 8 PRO x64 
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Lenovo 17 inches CRT Lenovo Cooler Master Thunder 500W Cooler Master Elite 311 
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