G74 and 8GB Memory DIMMs...

[fostert]

Does anyone here know if the G74 series will take the new 8GB DIMMs that are just starting to populate the market now? I.e. can one upgrade the G74 to 32GB of RAM by putting four of these in? I'm running Linux on the G74 and certainly will be able to address 32GB if I could get it...I also read that the i7 2630QM will actually address 32GB, but will only run it in single channel mode (anything that uses up to 16GB will run that first 16GB in dual channel mode).

[fostert]

gilbert wrote:
well guys i just received my 16gb 4x4 CORSAIR Vengeance and they do not overclock to 1600mhz by them self, with just 2 cards i get true 1600mhz speeds but with all 4 cards it down clocks itself to 1333mhz , they did not worked .

Sorry to hear they don't run at 1600 MHz. I was fairly sure another on this forum had gotten 4x4GB of the Corsairs to work at full speed. Certainly it looks like 2x8GB=16GB will run at the 1600 speeds...

Lets try the following:

1) What verions is your BIOS?
2) Download and burn onto a bootable CD memtest86+ 4.20 (http://www.memtest.org/download/4.20/memtest86+-4.20.iso.gz). Boot and run. What clock speed (in MHz) and CAS latency timings (e.g. 10-10-10-27, or 9-9-9-24, etc...) are reported when all four of your sticks are installed? Does shifting them around in the four slots make any diff to the speed?
3) What clock speed (in MHz) and CAS latency timings (e.g. 10-10-10-27, or 9-9-9-24, etc...) are reported when only two of your sticks are installed? This info will be interesting...I have suspected for a while now the BIOS incorrectly reads four PnP sticks' timings as something insanely tight (6-6-6-18 for example), which will never ever work with the memory controller at 1600 MHz speeds (too much of an overclock).
I'd like to find out if this is the case with your sticks.
4) Run the entire memtest for 3 passes minimum. If *any* errors (even just one) are reported, you have a solid RMA case for Corsair. They are superb at replacing memory, and will even help troubleshoot your problems further.
5) Check with Corsair about what kind of guarantee they have when their products do not run at their own rated speeds.

[gilbert]

fostert wrote:
Sorry to hear they don't run at 1600 MHz. I was fairly sure another on this forum had gotten 4x4GB of the Corsairs to work at full speed. Certainly it looks like 2x8GB=16GB will run at the 1600 speeds...

Lets try the following:

1) What verions is your BIOS?
2) Download and burn onto a bootable CD memtest86+ 4.20 (http://www.memtest.org/download/4.20/memtest86+-4.20.iso.gz). Boot and run. What clock speed (in MHz) and CAS latency timings (e.g. 10-10-10-27, or 9-9-9-24, etc...) are reported when all four of your sticks are installed? Does shifting them around in the four slots make any diff to the speed?
3) What clock speed (in MHz) and CAS latency timings (e.g. 10-10-10-27, or 9-9-9-24, etc...) are reported when only two of your sticks are installed? This info will be interesting...I have suspected for a while now the BIOS incorrectly reads four PnP sticks' timings as something insanely tight (6-6-6-18 for example), which will never ever work with the memory controller at 1600 MHz speeds (too much of an overclock).
I'd like to find out if this is the case with your sticks.
4) Run the entire memtest for 3 passes minimum. If *any* errors (even just one) are reported, you have a solid RMA case for Corsair. They are superb at replacing memory, and will even help troubleshoot your problems further.
5) Check with Corsair about what kind of guarantee they have when their products do not run at their own rated speeds.

well i have done memtest already individually 2 times per pass and i get no errors it takes for ever.

this is what i get with just two mem,

Ram frequency - 798.5

Dram - 1:6

latency - 9.0

Delay - 9

Precharge - 9

Cycle time - 24

and this is what i get with all of them installed

Ram frequency - 665.3

Dram - 1:5

latency - 9.0

Delay - 8

Precharge - 8

Cycle time - 20

no moving them around it doesn't help i even upgraded to windows 7 pro and nothing ......

and last i will b calling corsair soon and ask for input in this.

[kyloboy2004]

Thank you very much for your replies and help! So in that case, it's not recommended for me to buy 16GB DDR3-1600 for my laptop but instead I should choose 16GB DDR3-1333 for it right? Thanks for clarifying that to me.

I just have another question with regards to DDR3-1333. I kinda noticed on Newegg that there are DDR3-1333 (PC3 10600), DDR3-1333 (PC3 10660) and DDR3-1333 (PC3 10666), is there somehow a big significance if I buy the DDR3-1333 (PC3 10666) when it comes to performance and will it possibly be compatible to my laptop or should I just stick with the DDR3-1333 (PC3 10600) instead?

Again, thank you very much for all your answers and help guys!

[Zygomorphic]

kyloboy2004 wrote:
Thank you very much for your replies and help! So in that case, it's not recommended for me to buy 16GB DDR3-1600 for my laptop but instead I should choose 16GB DDR3-1333 for it right? Thanks for clarifying that to me.

I just have another question with regards to DDR3-1333. I kinda noticed on Newegg that there are DDR3-1333 (PC3 10600), DDR3-1333 (PC3 10660) and DDR3-1333 (PC3 10666), is there somehow a big significance if I buy the DDR3-1333 (PC3 10666) when it comes to performance and will it possibly be compatible to my laptop or should I just stick with the DDR3-1333 (PC3 10600) instead?

Again, thank you very much for all your answers and help guys!

For safety's sake, I would stick with the PC3-10600. I have 16 GB of the stuff running at 1333 MHz in my G53SX without problems. A better idea would be to run memtest86+ and determine exactly what you have. If you have the higher speed stuff, get more of it. My guess though, would be the PC3-10600. Newegg in one of their yolk'd episodes talked about it, and Paul said that it was more of a marketing gimmick than anything else.

[kyloboy2004]

Zygomorphic wrote:
For safety's sake, I would stick with the PC3-10600. I have 16 GB of the stuff running at 1333 MHz in my G53SX without problems. A better idea would be to run memtest86+ and determine exactly what you have. If you have the higher speed stuff, get more of it. My guess though, would be the PC3-10600. Newegg in one of their yolk'd episodes talked about it, and Paul said that it was more of a marketing gimmick than anything else.

Thank you very much Zygomorphic for you kind response! In that case I shall do that and buy 4x4GB DDR3-1333 (PC3 10600) for my G74SX-BBK9. I just have a curious question, aren't there any DDR3-1333 (PC3 10600) that have heat spreaders on them?

[fostert]

kyloboy2004 wrote:
Thank you very much Zygomorphic for you kind response! In that case I shall do that and buy 4x4GB DDR3-1333 (PC3 10600) for my G74SX-BBK9. I just have a curious question, aren't there any DDR3-1333 (PC3 10600) that have heat spreaders on them?

Heatspreaders are a complete gimmick to give the illusion of high performance. Even the corsair 2000MHz GT desktop RAM I run in my desktops (which has wild red heatsink fins and spreaders) are barely warm to the touch, even at 2200MHz! Todays RAM runs at very low voltages (1.5-1.65V) and you are never going to get them hot enough from overclocking to need to cool them. Never. The only time you need cooling is to lower the internal resistance enough (electrical resistance scales with temperature) to get that last hertz or two of clock tick above the transistor's activation point, which is only going to happen when you are pushing them to their absolute limits, a scenario you'll rarely achieve in a desktop, and never ever in a notebook.
Forget about the flashy heatspreaders. Useless.

[kyloboy2004]

I also have a similar concern with regards to my ASUS G74SX-BBK9.

I would like to upgrade my laptop's RAM from 8GB to 16GB in the near future, however I currently have DDR3-1333 installed in it and was kinda wondering if my laptop can support 16GB DDR3-1600. I researched about my processor's supported range (Intel Core i7-2670) and it said that it can support 16GB DDR3-1066/1333 only, but after reading the replies in this post, I got confused on how things work. I'm not that much of a hardware nerd/geek and I'm having a hard time understanding many things so far.

I would really appreciate it if someone can help me with my concern and I deeply apologize if ever the answer to my concern has been answered already in the previous replies. Thank you very much!

[X-ROG]

G75/55 series will both be quad-core, but I haven't seen a sample yet to know if it is 2 or 4 DIMM. We will do an upgrade guide don't worry! 😉

[Yahooligan]

You MAY be able to run 2x8GB @ 1600, but I don't know. There may be some other posts on here about that. Running 4x4GB @ 1600 is not possible, though. The speed will be clocked back to 1333 if you do that.

[BrodyBoy]

Yahooligan wrote:
You MAY be able to run 2x8GB @ 1600, but I don't know. There may be some other posts on here about that. Running 4x4GB @ 1600 is not possible, though. The speed will be clocked back to 1333 if you do that.

You're correct...8Gb will run at 1600, but 16Gb runs at 1333, regardless of the RAM's rated speed.