16gb ram installed, only 8gb being working, bios recognizes there are 4 sticks, but only using 2

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Conan_AlexCody

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I have Win7 ultimate 64...4 ram sticks 4gb each...reseated literally like 10 times...i5 950...all 4 ddr3...all 4 9-9-9-24...motherboard supports 1333 and 1600...ive reset cmos...updated bios...all 4 work ive tried each one individually...bios shows 4 sticks true post bios says 8gb when 16gb installed...computer/properties says 8gb...4 ram slots on motherboard...when using each one solo they work...when using 2 they work...when using 4 only 2 work even though bios recognizes all 4
 
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Tradesman1
With all those different sticks of DRAM, it's not surprising, it's never a good adea to mix DRAM, get the amount you want in a single package...here start with just the 2x4GB kingstons and see if you can get them to work together, (hopefully they were a packaged set)
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faalin

faalin

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Feb 22, 2012
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First off ... is not punctuation, second how about some system specs.

Ok so you have a i7-950, now there are issues of over tightening the cpu down causing pins to jump pads on the cpu. you say that you've reseated it 10 times. What cooler do you have? I had issues with my 950 when I first got it but I'll wait to give answers till I know full system specs.


Motherboard
Ram
cpu cooler
 
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Conan_AlexCody

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Murissokah

Murissokah

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I couldn't understand from the original post if you tried each memory slot on the motherboard separately. If you didn't, please do so to ensure they all work.

Are you using a bunch of different RAM sticks? That could cause all sorts of issues. The fact that they match four of the many timings on the memory is not enough to ensure proper operation. For one, one of the sticks is 1.65V where the others are 1.5V.

I'd try relaxing the timings and setting the memory voltage to 1.65. I'd also try one memory stick at a time and take notes of the timings it sets automatically on the BIOS, to try and pinpoint differences.

Also, make sure you disable dual-channel.
 
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faalin

faalin

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the processor links to the motherboard, and your have 3 different type's of ram

2x4gb kingston ddr3 1333 cas 9 1.5v
1x2gb g.skill ddr3 1333 cas 9 1.5v
1x2gb corsair ddr3 1600 cas 6 1.65v


you need to set all of your ram to 1333mhz cas 9 manually in the bios, hopefully that will fix the problem. There are way to many things going on with the ram, you have 2 different sizes 2gb & 4gb and 3 different manufactures . If you're only gaming the just stick with the 8gb 2x4gb Kingston ram, that is enough for gaming.
 
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Tradesman1

Tradesman1

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With all those different sticks of DRAM, it's not surprising, it's never a good adea to mix DRAM, get the amount you want in a single package...here start with just the 2x4GB kingstons and see if you can get them to work together, (hopefully they were a packaged set)
 
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Murissokah

Murissokah

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I have to say I'm with Faalin on this one, it's probably best to use only the 2x4GB set. I had 4 matching sticks and one of them was giving me issues every now and then, so I removed one pair and it was the best thing I could've done.

Unless you have any real reason to need more than 8GB, which you likely don't, I'd say ditch those other sticks. Two sticks is the best setup, since it enables the dual-channel gimmick and reduces the likelyhood of memory failure. In your case, specially, using different models is really too much of a hassle for too little benefit.
 
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Conan_AlexCody

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the two sticks that arent a pair ive had...the two that are a pair i got and tried and it failed to give me 8 more gb...the g skill and the crosair are the ones ive had...ive tried every slot single ram...all the ram work and all the slots work...its when i have 2 in slots...the other two just dont work...bios sees that they are there but just doesnt feel like using it...i still havent tried setting it to only 1333...its 4 4gb...16 total...had 8 trying to have 8 more...i run servers off my computer game on my computer and have some programs that i will be needing to multi task and i really would like to have the 16gb...sorry about the double motherboard link http://www.newegg.com/Product/Product.aspx?Item=N82E16819115232 that is the processor...anything else? needed ill try to give you any information needed as soon as possible...trying the setting it to all 1333 now...and the 1.5v and 1.65v do u want me to make them all 1.5v or 1.65v i dont know...but ill do it so you dont have to answer that haha
 
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Conan_AlexCody

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ok so i just tried it...it was already set to 1333 i cant change that...it was on auto for voltage...i made it 1.5v and 1.6v....didnt change anything bios still says 8gb...even though in the preformance/biostar memory insight it still sees all 4 of them there
 
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Conan_AlexCody

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ok so i tried it and it didnt work...also heres more information that might help...might haha...ok so "memory frequency" 1333mhz...."total memory" 8192mb...a1 not present a2 4096mb b1 not present b2 4096mb...9 9 9 24

ecc support...enabled
max tolud...dynamic
nmode scrambler...auto
memory scrambler...enabled
mrc fast boot... enabled
force cold reset...enabled
dimm exit mode...fast exit
power down mode...ppd
scrambler seed generation off...disabled
memory remap...enabled

also the ram sticks in a1 and a2 are the ones ive had....in b1 and b2 those the kingston pair
 
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Murissokah

Murissokah

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Memory kits should be installed in different channels to benefit from dual-channel, though in your case that is not a good idea, because of the different memory modules. Anyway, I'd try leaving the Kingston pair as A1 and B1, and the others as A2 and B2.

Disable ECC support since none of your memory is ECC. If you see XMP anywhere, disable that too. Voltage should be set to the highest of all modules, so 1.65V. It won't damage anything.

Max TOLUD to AUTO and Memory Remap ENABLED are indeed the right options, so keep that.

After Memory Remap, there should be "Memory Alias Check" and "Channel A/B Dimm Control". Make sure the latter is set to "Enabled Both DIMMs"
 
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Conan_AlexCody

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ok its ok 1.6v right now...i disabled ecc support...there was no xmp..and also i tried memory alias check on disable and enable nothing changed...also the kingstons are now in a1 and b1...the corsair is in a2 and the g. skill is in b2...nothing changed
 
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Murissokah

Murissokah

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I was referring to the setting that comes AFTER "Memory Alias Check", the one called "Channel A/B DIMM control". Make sure it is set to "Enabled Both DIMMs".

Other than that, I'm not sure how else we can pinpoint the issue. I have to say, though, that I believe you will better off with a 8GB kit than with a 16GB miscellanea. Stability concerns should be held in much higher regard than performance, after all, a fast car is only a good one if it doesn't crash into a wall. In this case specifically, 16GB poses near-zero performance advantage over 8GB.

Still, I understand you wanting to use all the memory you have available, so if you tried all the above settings and it didn't work, let me know so we can brainstorm a little more.
 
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Murissokah

Murissokah

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Here's what I gathered regarding standard settings:

Ripjaws:

9-9-9-24-2N @ 1333MHz, 1.5V

Kingston:

9-9-9-27 (likely 2N too) @ 1333MHz, 1.425V ~ 1.575V

Corsair:

9-9-9-24 (likely 2N too) @ 1333MHz, 1.5V ~1.65V (turns ou the 1.65V is for 1600MHz)

Considering the above, I'd set it to:

Max TOLUD = AUTO
NMODE Support = 2N
Memory Scrambler = Disabled
MRC Fast Boot = Disabled
Force Cold Reset = Enabled
DIMM Exit Mode = Fast Exit
Power Down Mode = No Power Down
Scrambler Seed Generation OFF = Enabled
Memory Remap = Enabled
Memory Alias Check = Disabled
Channel A/B DIMM control = Enabled BOth DIMMs

DRAM Timing Control = Manual
DRAM Timing Multiplier = 14
CAS =9
tRP = 9
tRCD = 9
tRAS = 27
tWR = 10
tRFC = 74
tWTR = 5
tRRD = 4
tRTP = 5
tFAW = 20

DRAM Voltage 1.5V

If it doesn't work like that, maybe you could try a BIOS update.
 
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Murissokah

Murissokah

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Here's what I gathered regarding standard settings:

Ripjaws:

9-9-9-24-2N @ 1333MHz, 1.5V

Kingston:

9-9-9-27 (likely 2N too) @ 1333MHz, 1.425V ~ 1.575V

Corsair:

9-9-9-24 (likely 2N too) @ 1333MHz, 1.5V ~1.65V (turns ou the 1.65V is for 1600MHz)

Considering the above, I'd set it to:

Max TOLUD = AUTO
NMODE Support = 2N
Memory Scrambler = Disabled
MRC Fast Boot = Disabled
Force Cold Reset = Enabled
DIMM Exit Mode = Fast Exit
Power Down Mode = No Power Down
Scrambler Seed Generation OFF = Enabled
Memory Remap = Enabled
Memory Alias Check = Disabled
Channel A/B DIMM control = Enabled BOth DIMMs

DRAM Timing Control = Manual
DRAM Timing Multiplier = 14
CAS =9
tRP = 9
tRCD = 9
tRAS = 27
tWR = 10
tRFC = 74
tWTR = 5
tRRD = 4
tRTP = 5
tFAW = 20

DRAM Voltage 1.5V

If it doesn't work like that, maybe you could try a BIOS update.
 
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Conan_AlexCody

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ok well the first part

Max TOLUD = AUTO
NMODE Support = 2N
Memory Scrambler = Disabled
MRC Fast Boot = Disabled
Force Cold Reset = Enabled
DIMM Exit Mode = Fast Exit
Power Down Mode = No Power Down
Scrambler Seed Generation OFF = Enabled
Memory Remap = Enabled
Memory Alias Check = Disabled
Channel A/B DIMM control = Enabled BOth DIMMs

i was able to get but for some reason whenever i would try to do the second part

DRAM Timing Control = Manual
DRAM Timing Multiplier = 14
CAS =9
tRP = 9
tRCD = 9
tRAS = 27
tWR = 10
tRFC = 74
tWTR = 5
tRRD = 4
tRTP = 5
tFAW = 20

it wouldnt work...like it would let me change it but when i saved and exited my computer would turn back on then off then again then it would turn on like normal and when i checked the 2nd part was back to the default...by SPD...also i cant change the multiplier to 14 i can only do 13.33 or 10.67
 
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Murissokah

Murissokah

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It might matter, specially if dual-channel is in place. Now here's a new idea:

1. Clear CMOS.

2. Boot the PC with all DIMMs installed.

3. Run CPU-Z, take a screenshot of the memory timings for each working DIMM and post it here.

4. If you have only two DIMMs showing in CPU-Z, please turn off the PC, remove the ones that WERE listed, and leave the ones there WERE NOT. CPU-Z will probably list the vendor, so it will be easy to know.

5. Run CPU-Z again, take a screenshot of your memory timings again.

By comparing all timings, we can find out what are the defaults for each DIMM and try to find a working setting for them all.

Also, what OS are you using?
 
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