Closed Solved

Went from 6GB to 8GB, only recognizes 4GB dual channel.

O k guys. I recent upgraded my RAM from 6GB to 8GB so I could run dual channeling, however when I installed my new RAM it only recognized 4gb.

-Bios has been flashed
-RAM is known to be working
-All four 2GB ram sticks are 100% matches.
-Reseated several times
-ASUS M4a785td-m evo MOBO
-Corsair tx750v2 PSU (overkill for my setup)



38 answers Last reply Best Answer
More about went recognizes dual channel
  1. how much ram do you see in bios
  2. What Win7 OS version, 32-bit or 64-bit?
  3. Windows 7 64 bit, 4gb ram in bios.
  4. 6.1.7600
  5. I would start by inserting one stick at a time into the first socket. If all four are recognized, then I would add the second slot making sure I was using the slots in correct order. Rinse and repeat checking the amount of ram shown at each reboot. Also make sure your bios setting are correct by setting the timings manually. When installing the memory, from what your saying, you can detect if loading the blue slots. Try loading only the black. Re-install the chip set drivers with the latest version.
  6. If the ram is "known good", and you did your due diligence with bios updates, making sure its seated right, the next thing i would question are your ram slots on the motherboard.

    Check your ram one more time by booting up with only 1 stick in the first slot - do this to all 4 stciks. If you see 2 gigs every time, its pretty much for sure that you have a bad ram slot.

    You can find which one by adding an extra stick each reboot - the slot that does not give you an extra 2 gigs - thats the bad one.
  7. http://www.asus.com/Motherboards/AMD_AM3/M4A785TDM_EVO/
    You can see my Mobo there, Previously I had three 2GB ram sticks in the blue and 1 in the first black slot.

    Lets say my 4th dimm slot is busted, could it recognize that I am trying to dual channel the ram but the busted slot wont let either stick work since it is dual, where as before I had 6GB in 3 dimm slots?
  8. Not usually. You should be able to see a single 2 g in any slot. Thats why I suggested trying a good stick in each slot.
  9. Looking at your second image, my assumption is you confused '2GB' kits with 2GB per stick i.e. 4GB kits.

    Please provide a link(s) to your EXACT kit(s) and an image of CPU-z 'SPD' tab; see example below:
  10. My newer RAM (date purchased newer), is pc10600 not the pc10700 my cpuz program is reporting. Could the speed be causing this?
  11. Best answer
    As I suspected, you have 4x1GB (4GB) in total; per your link "Pieces/Unit: 2 (Two 1GB modules, totaling 2GB)

    Pay the 10%~15% restocking fee and get an 8GB 2x4GB kit.

    Cheap 2x4GB (8GB) Kits - http://www.newegg.com/Product/Productcompare.aspx?Submit=ENE&N=100007611%20600006069&IsNodeId=1&bop=And&CompareItemList=147%7C20-139-075%5E20-139-075-TS%2C20-231-424%5E20-231-424-TS%2C20-231-422%5E20-231-422-TS
  12. Gonna crack her open and take a look and see if I misread something.
  13. Happens...
  14. bloodhound50 said:
    Gonna crack her open and take a look and see if I misread something.

    You can't just match brand, size and speed and call it a dual channel kit. You're just asking for problems if you do.

    Actual multi-channel kits are paired up by the manufacturer to be sure they operate within tight tolerances of each other. If you didn't buy a pair of sticks at the same time that were labeled as a dual channel kit, you do not have a dual channel kit.
  15. O k, thank you for the clarification. I had one 4GB stick, and two 1GB sticks previously. I accidently bought the same thing again, when I meant to get two 2GB sticks. Now I have 7GB RAM installed and cpu-z says "Channels # DUAL".

    So I will look at kits that are specifically mentioned to be for dual channeling. Thanks for all the quick and helpful replies.
  16. You 'can' run 2x4GB + 2x1GB or (10GB), but 1x4GB + 3x1GB (7GB) is not 'Dual Channel' regardless of what CPU-z says. Dual Channel requires the same size per Channel.

    Frankly, with DDR3 RAM it's not a big difference so do what 'you' feel is best.

    Good Luck!
  17. Thanks.
  18. I am looking into buying this:
    http://www.newegg.com/Product/Product.aspx?Item=N82E16820104173

    Is the Hyper-x type main advantage is programmable overclocking and higher voltages?
  19. bloodhound50 said:
    I am looking into buying this:
    http://www.newegg.com/Product/Product.aspx?Item=N82E16820104173

    Is the Hyper-x type main advantage is programmable overclocking and higher voltages?

    It also has the heat-spreaders to aid in heat dissipation.

    In a nutshell, HyperX is the name Kingston gave to their high performance/gaming line of memory modules. Other companies' (Patriot, Corsair, GSkill, Geil, etc.) high performance lines are not split off as much on Newegg's website.
  20. First, DDR3-1600 is fine you'll need to either: 1. AI OC Tuner -> DOCP and use a DRAM OC Profile, or FSB -> 240HMz and adjust the CPU Multiplier/Ratio, or 3. CPU-NB Frequency -> 2400MHz. However, that's primarily for the AMD Phenom x4/x6 family. An AMD Athlon isn't the best choice with DDR3-1600,and the added instability isn't worth the fractional gains.

    The RAM I posted are all 1.50v DDR3-1333 and will work easily and are 'plug 'n play.'

    If you want something faster the DDR3-1333 CAS 7 RAM, I added (2) kits F3-10666CL7D-8GBXH & F3-10666CL7D-8GBRH - http://www.newegg.com/Product/Productcompare.aspx?Submit=ENE&N=100007611%20600006069&IsNodeId=1&bop=And&CompareItemList=147|20-139-075^20-139-075-TS,20-231-424^20-231-424-TS,20-231-422^20-231-422-TS&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-RSSDailyDeals-_-na-_-na&AID=10521304&PID=4176827&SID=csepq17tnuqu
  21. I take it G.Skill is a reputable name?
  22. Correct, G.SKILL, Corsair, Mushkin, Kingston, and Crucial. Also Patriot Memory seems to have corrected whatever issues I saw in the past and over the past year have a low failure rate; AMD is using Patriot Memory as a re-brand.
  23. jaquith said:
    Correct, G.SKILL, Corsair, Mushkin, Kingston, and Crucial. Also Patriot Memory seems to have corrected whatever issues I saw in the past and over the past year have a low failure rate; AMD is using Patriot Memory as a re-brand.

    I'm still avoiding Patriot. I bought a couple of their kits that were highly intolerant to overclocking. My old G.SKILL DDR2-800 kit happily ran at 1000+, but the Patriot kits became unstable with as little as a 50 MHz overclock.

    Less of an issue now that memory overclocking is much less common, but I've just found G.SKILL to be equal or better quality at a lower price.
  24. Thanks for the insight, I think I will get two 4gb sticks in that dual channel kit linked above of G.SKILL
  25. Kingston and Crucial from above are the only companies that produce their own IC's, the remainders e.g. G.SKILL, Corsair, and Mushkin 'pick' the IC's and produce the PCB/sink and assemble.

    It entirely depends on line of kits; example Corsair Vengeance = poor OC (above rated), Dominator's = great OC, and ditto with any Mfg including G.SKILL.
  26. Am I more likely to get a re-marked chip with the companies that don't produce their own IC's?
  27. In your case it really doesn't matter, I seriously doubt you're going to buy DDR3-1333 and try to OC the RAM to DDR3-1866 or faster. The Brands I already listed are all good.

    Further, I don't recommend mix-matching RAM: Brands, Lines of Brands, Density (GB), Frequency, CAS Timings, nor especially ever Voltage. In other words, the 'ideal' choice is to buy a Fully Matched Set; least chances of any problems.
  28. You might also be aware that if you plan to O.C., the few slots filled the better. If you want 8g of ram, buy a 2x4 kit. If need be you can probably sell your other sticks on ebay.
  29. Because it generates less heat?
  30. No because fewer modules for the MB to maintain voltage regulation, timing on and better matching of sticks.
  31. There is no point in OCing ddr3 memory. When you get up to 1333mhz, Ocing wont be noticed. If you want OC'd memory get 2000mhz+ memory. But to manually adjust timing and voltage on current memory is just asking for trouble.
  32. Not really. Memory overall is pretty cheap.
  33. bloodhound50 said:

    Good Kit. Enjoy :sol:
  34. Best answer selected by Bloodhound50.
  35. This topic has been closed by Nikorr
Ask a new question

Read More

Memory RAM Dual Channel Product