6GB showing as 4GB usable in Windows 7 64bit
- Thread starter MrMark
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SkodaMart
S
SkodaMart
I have the EVGA one and mine suffers from this too.
I am guessing that a high clockspeed and a high ram speed is too much for the P55s to handle?
I have 'fixed' mine by lowering my ram clock to 600 MHz (2:6) (1200MHz)
at 4.0 GHz
I also suspect that some of this new DDR3 memory isn't stable at its advertised speed. Buy 1600 if you want to run at 1333 etc and just tighten up the timings.
I had this same problem with 6gig Corsair XMS 7-7-7-20 T1 only showing 4gig ram mem test ect came up with no errors on any of the sticks I eventually changed from ASUS to Foxconn then to Gigabyte with the same problem.
I just got fed up and bought 6gig of cheaper Kingston Hyper X & ive not had a problem since.
I sold the corsair memory on as there was nothing wrong with it, just for some reason wouldn't work for me.
I just got fed up and bought 6gig of cheaper Kingston Hyper X & ive not had a problem since.
I sold the corsair memory on as there was nothing wrong with it, just for some reason wouldn't work for me.
SkodaMart
S
SkodaMart
I have just run Memtest86+ and the SPD value of my Corsair 1600C9 was shown at 10600 not 12800.
That would explain why it is perfectly stable at 1333 MHz and unstable at 1600 MHz.
I suspect that Corsair may be optimistic about the performance of their memory?
OCUK, any chance of stocking the new Crucial Ballistix Tracer in blue?
That would explain why it is perfectly stable at 1333 MHz and unstable at 1600 MHz.
I suspect that Corsair may be optimistic about the performance of their memory?
OCUK, any chance of stocking the new Crucial Ballistix Tracer in blue?
The SPD is programmed to JEDEC standards, allowing it to boot on any DDR3 motherboard. This means the highest "standard" timings programmed on the SPD are usually slower than the rated speed of the memory.
This doesn't mean that the memory chips are only rated at the slower speed. Just that the speed guaranteed by the memory (1600MHz) is considered an overclock by JEDEC standards.
In other words, don't worry about the SPD! If the memory is sold as rated for a certain speed, it is guaranteed to run at that speed. If it doesn't, RMA it.
This doesn't mean that the memory chips are only rated at the slower speed. Just that the speed guaranteed by the memory (1600MHz) is considered an overclock by JEDEC standards.
In other words, don't worry about the SPD! If the memory is sold as rated for a certain speed, it is guaranteed to run at that speed. If it doesn't, RMA it.
I have had the same issue for months Asus 6pt deluxe, g skill trident, only seeing 4 gig on a cold boot, had 3 motherboards and all did the same, have just RMA'd ram and await replacement so will let you know the outcome, from I have read so far it is possible that this issue is caused by faulty memory. G Skill have sent me a repalcement but have not confirmed if RAM was faulty or not so will try as soon as i get new RAM
My issue fixed by enabling XMP profile in bios and left the advanced XMP on auto.
any other settings and windows allocates 2.01GB of RAM for hardware randomly. So the max overclock I can get is 3.2 :/..least i got my ram back tho!
any other settings and windows allocates 2.01GB of RAM for hardware randomly. So the max overclock I can get is 3.2 :/..least i got my ram back tho!
another way to try to fix it, is by testing the individual sticks are working. a thread a few days ago had a faulty stick being the culprit.
Also reseat all the sticks and the CPU, and blow out all the slots (low tech i kno but worked sometimes!)
Also reseat all the sticks and the CPU, and blow out all the slots (low tech i kno but worked sometimes!)
re:
Had the same issue yesterday
Decided to go through checking each stick one at a time and found one stick would not boot the PC up!
Will be ringing for an RMA today, unfortunately I guess all ram will have to go back???? meaning so PC for 4 to 5 days???
Cheers
mrix
Had the same issue yesterday
Decided to go through checking each stick one at a time and found one stick would not boot the PC up!
Will be ringing for an RMA today, unfortunately I guess all ram will have to go back???? meaning so PC for 4 to 5 days???
Cheers
mrix
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Don't RMA just yet, I have fixed my problem! 
I took my Corsair H50 cooler off, removed the CPU and I found 1 bent pin on the socket, I gently pushed it back into position and applies some MX-3 paste to the cooler. Re-booted and now it's showing 6BG YAY!
The system is 10c coller as well!
So I suggest all of you with the same problems do as I just did.
I really don't know how it got bent maybe the cooler was overtightened.
I took my Corsair H50 cooler off, removed the CPU and I found 1 bent pin on the socket, I gently pushed it back into position and applies some MX-3 paste to the cooler. Re-booted and now it's showing 6BG YAY!
The system is 10c coller as well!
So I suggest all of you with the same problems do as I just did.
I really don't know how it got bent maybe the cooler was overtightened.
The "Approx Total Memory" shown on your graphics card from DXDiag is NOT the "reserved memory" that windows is unable to use.
It does generally tend to be one of two things, A) the bios isnt remapping hardware reserved ram above physical memory, or B) the memory controller is faulty and/or the cpu isnt making good contact with the socket.
Anyway this problem seems to be extremely common on Socket LGA1156, dunno if its limited to foxconn sockets or if lotes sockets have the same issue (as the foxconn doesnt make good contact overall)
I believe Corsair program the SPD like that deliberatly, the main reason is so that motherboards which are on the low side when it comes to memory voltages will be stable enough to boot into bios where the correct voltages and timings can be set.
OCZ ram is the same, and good thing too as OCZ ram generally needs a ton of voltage for stability, and most motherboards will default to jedec standards for memory voltage.
I had a very similar issue with an Biostar I55 motherboard - 4GB of RAM (2x2GB), but the OS only sees "1.99 GB Usable in Windows 7 64bit.
The manual says I can only use either A1 OR B1 to boot, now if I use A1 the system boots, if I use B1 the system will not boot up with any 4 sticks of ram I used
If I put 4 x 2GB ram in I have 4GB out of 8GB usable, I then began to switch slots etc & found that if I put ram in slots A1 & A2 - 4GB of ram does show up, but using slots B1 & B2 fail to show any physical ram, so it must be the two faulty dim slots.
I did some more investigating of this problem & it seems that the issue can arise to misaligned pins, bent pins, missing pins on the socket.
Upon close inspection of the socket this is what I found.
The fairly well known company I bought it from refused RMA stating it was end user damage, then also Target Computers the distributor who handle RMA for Biostar also refused RMA.
I also spoke to Gigabyte & their Tech said if it was a Gigabyte motherboard they would issue an RMA. - http://forum.giga-byte.co.uk/index.php/topic,917.0.html
Further to this I spoke to Trading Standards/Consumer Direct as I read in the Sales Act that in the first 6 months of a purchase if the damage cannot be proven to be done by the end user then you warranty claim still exists.
Finally after stating this & quoting the Trading Standards Reference number to the Retailor in question I got a call from them saying they would offer a refurbished Asus P7P55D worth £113, my original motherboard cost £138 so I refused this & asked if they would agree if I could purchase a brand new Gigabyte GA-P55A-UD4 for (£75ish) around 50% of its purchase value which they agreed.
I think part of the problem is the Foxconn retention bracket, the new P55A Gigabyte models all use the Lotus retention bracket - all in all this took over 3 months to sort out but now I'm happy.
All goes well I'll be installing my new motherboard at the weekend - definitly sticking with Gigabyte all the time now.
The manual says I can only use either A1 OR B1 to boot, now if I use A1 the system boots, if I use B1 the system will not boot up with any 4 sticks of ram I used
If I put 4 x 2GB ram in I have 4GB out of 8GB usable, I then began to switch slots etc & found that if I put ram in slots A1 & A2 - 4GB of ram does show up, but using slots B1 & B2 fail to show any physical ram, so it must be the two faulty dim slots.
I did some more investigating of this problem & it seems that the issue can arise to misaligned pins, bent pins, missing pins on the socket.
Upon close inspection of the socket this is what I found.
The fairly well known company I bought it from refused RMA stating it was end user damage, then also Target Computers the distributor who handle RMA for Biostar also refused RMA.
I also spoke to Gigabyte & their Tech said if it was a Gigabyte motherboard they would issue an RMA. - http://forum.giga-byte.co.uk/index.php/topic,917.0.html
Further to this I spoke to Trading Standards/Consumer Direct as I read in the Sales Act that in the first 6 months of a purchase if the damage cannot be proven to be done by the end user then you warranty claim still exists.
Finally after stating this & quoting the Trading Standards Reference number to the Retailor in question I got a call from them saying they would offer a refurbished Asus P7P55D worth £113, my original motherboard cost £138 so I refused this & asked if they would agree if I could purchase a brand new Gigabyte GA-P55A-UD4 for (£75ish) around 50% of its purchase value which they agreed.
I think part of the problem is the Foxconn retention bracket, the new P55A Gigabyte models all use the Lotus retention bracket - all in all this took over 3 months to sort out but now I'm happy.
All goes well I'll be installing my new motherboard at the weekend - definitly sticking with Gigabyte all the time now.
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re:
As far as I am concerned I checked all 3 sticks in the same slot and only one did not boot up the PC so it must be dead, I checked about 3 times and the same outcome everytime.
Overclockers now have my set and state it will take 5 to 6 days to test
It seems clear to me its a dead stick so I cant understand why they just have not sent me a new set
mrix
As far as I am concerned I checked all 3 sticks in the same slot and only one did not boot up the PC so it must be dead, I checked about 3 times and the same outcome everytime.
Overclockers now have my set and state it will take 5 to 6 days to test
It seems clear to me its a dead stick so I cant understand why they just have not sent me a new set
mrix
I don't mean to be funny mate, but just because you diagnosed the RAM as being faulty you can't expect the retailer to take your word for it, they have to get their techs to test the RAM to make sure there is a fault first before they send you a replacement!!!
And you also have to remember that it takes time for them to test things.
My PSU has been with another e-tailer for almost 2 weeks now, and they still haven't booked it in for testing yet, this is the 2nd PSU in 6 months I've had to send back to them...
And you also have to remember that it takes time for them to test things.
My PSU has been with another e-tailer for almost 2 weeks now, and they still haven't booked it in for testing yet, this is the 2nd PSU in 6 months I've had to send back to them...
Off topic, no more word from them yet davy? Finally sorted on my end.
Nah mate, getting sick fedup waiting tbh.. 2 weeks and they still haven't tested it is quite shocking actually.
Gonna give em a call tomorrow me thinks.
So did you just take the refund they offered you?
::edit::
just checked your thread mate, that's good news.
Though tbh they should have done this to begin with really.