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Slow Memory Speed with Quad Channel

post #1 of 14
Thread Starter 
Hi
I am using 8 DRAMs on my X99 buiuld
4x ADATA 8G DDR4 2400
4x Kingston FuryX 8g ddr4 2400
I am getting extremely low speed on memory benchmark such as AIDA64 and MaxxMEM.
It was even slower than my dual channel DDR3 1800 on my Z87.
This is the benchmark score for default setting 15-15-15-36 2133mhz
I have tried manually set 12-12-12-32 2133mhz as well. There is about 10-20% of performance increase, but it is still way slower than normal quad channel. (I am using Xeon E5, so the memory is locked at 2133mhz).
post #2 of 14
Well when you mix RAM like that, you can expect problems. Don't mix RAM chips from different manufacturers. You shouldn't even mix different model RAM from the same manufacturer.
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post #3 of 14
Thread Starter 
Quote:
Originally Posted by WizardontheJob View Post

Well when you mix RAM like that, you can expect problems. Don't mix RAM chips from different manufacturers. You shouldn't even mix different model RAM from the same manufacturer.
I have mixed RAM in the past, and they worked flawlessly. I guess that I'm not lucky this time. Any other reasons they don't work well?
post #4 of 14
I'm not sure about the science behind it, but getting mixed RAM tor work without error is tantamount to winning the silicon lottery.
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post #5 of 14
Thread Starter 
Quote:
Originally Posted by WizardontheJob View Post

I'm not sure about the science behind it, but getting mixed RAM tor work without error is tantamount to winning the silicon lottery.
I tried a few different arrangements. Problem solved!
post #6 of 14
Quote:
Originally Posted by WizardontheJob View Post

Well when you mix RAM like that, you can expect problems. Don't mix RAM chips from different manufacturers. You shouldn't even mix different model RAM from the same manufacturer.

 

Pretty much this ^ We don't recommend mixing memory modules since we can't account for the build of other modules since you have to take into account the chips and the information on the SPD which can differ between manufactures.

 

Quote:
Originally Posted by JustinZanyo View Post


I have mixed RAM in the past, and they worked flawlessly. I guess that I'm not lucky this time. Any other reasons they don't work well?

 

YMMV, see above...

post #7 of 14
Thread Starter 
Quote:
Originally Posted by HyperX-Felinni View Post

Pretty much this ^ We don't recommend mixing memory modules since we can't account for the build of other modules since you have to take into account the chips and the information on the SPD which can differ between manufactures.


YMMV, see above...
I put all Kingston in Channel AB, and all ADATA in channel CD. Problem solved
post #8 of 14
Quote:
Originally Posted by JustinZanyo View Post

I put all Kingston in Channel AB, and all ADATA in channel CD. Problem solved

You are probably now no longer running in dual channel mode.
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Jarvis
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Pepto Pony
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CPUMotherboardGraphicsGraphics
AMD Ryzen 5 1600X CROSSHAIR VI Hero MSI GTX 980 Gaming 4g MSI GTX 980 Gaming 4g 
RAMHard DriveHard DriveHard Drive
G.SKILL Ripjaws V Series 16GB 2x2 Samsung 850 EVO 250Gb SSD Intel 160 Gb SSD Intel 250 Gb SSD 
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Generic DVD-RW 2 x Noctua (NF-P12-1300 )1300rpm Premium Silent... Monsoon 90° Rotary Angle Fitting - 5/8" - Red Bitspower Dual / Single D5 Top Upgrade Kit 100 ... 
CoolingCoolingCoolingCooling
ModMyToys DreamFlex Premium 3/8" ID Tubing Reta... Coolance Liquid Coolant Bottle, 700mL Fluoresce... Coolance PMP 450 Variable Speed D5 Pump Bitspower D5 Mod Top V2 Pom version 
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CoolingOSMonitorKeyboard
COUGAR CF-V12H Vortex Hydro-Dynamic-Bearing  Microsoft Windows 10 Professional Samsung KS8000 4k UHD 65" Microsoft Wireless Comfort 5000 Keyboard and Mouse 
PowerCase
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FX-4300 Gigabyte GA-78LMT-USB3 EVGA Geforce GTX 260 G.Skill Ripjaws X 
Hard DriveHard DriveOptical DriveCooling
Corsair SSD Samsung 7200 Laptop drive Some DVD Burner I took out of a dead Dell. Noctua NH-C12P SE14 
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Dell 19" 16:9 Logitec wireless Enermax 650w Apevia X-Cruiser3 Pink 
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A6-6400K Dual Core MSI A78M-E35 Onboard 4Gb G.Skill Ripjaws 1600Mhz (2 x 2) 
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Intel 320 SSD Western Digital 2.5" 1Tb 7200rpm  LG External Blue-ray Combo Drive Noctual NH-L9a 92mm SS02 
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post #9 of 14
Quote:
Originally Posted by JustinZanyo View Post


I put all Kingston in Channel AB, and all ADATA in channel CD. Problem solved

 

Glad to hear it worked out for you as it's not completely impossible just a higher chance of compatibility issues. YMMV...

post #10 of 14
Thread Starter 
Quote:
Originally Posted by WizardontheJob View Post

You are probably now no longer running in dual channel mode.
It works perfectly in quad channel mode. I manually set all timings to 12-12-12-32 2T
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