G74SX-BBK8 running 16 Gb of corsair ram at 1600mhz??

[Zygomorphic]

Why would it conflict? And if it does exist it probably refers to the optimal frequency in case all four slots are filled. But I can't see it because say one puts 4 sticks of 1066MHz RAM in there (which the core i7 2630/2670QM are stated to also support: see ark.intel): why would it "overclock" those to 1333 MHz?
Seems like it should work...and if it doesn't it falls back on failsafe settings, which you have not modified.

I admit I am anxious to hear how it turns out, but first and foremost you're the owner...with the risk you'll create a new thread on these forums, where we either follow your success and glory or your repair experience...nonetheless I am optimistic as others round here have modded the BIOS to fix the throttling issue and successfully flashed it. Good luck!

From what I understand, the lowest speed memory you are supposed to put into an Intel Mobo is the default speed of the memory controller. While the 1333 RAM itself has JEDEC timings for 1066, the memory controller may not. The memory controller is designed to run at 1333 or higher, because it improves the memory speed and bandwidth over the Nehalem (1st gen core iX) processors.

[dataDave]

OK, here I am with the screens...

mem.jpg

Mem DRAM freq. showing just 665...

spd.jpg

However this SPD picks up the correct readings and acknowledges the true ratings.

Is there anything else I can do to test the integrity of the RAM? CPU-Z also only reports that my GPU has just 1gb of RAM, when DxDiag reports 3gb, so I don't really trust it that much.

Thanks,
Dave.

PS. Loving my first RoG btw, I love all my systems when they are squeeky clean like this, just installing Starcraft 2 now, the first game to go on.

Let's see how long I can keep this one clean for before filling it full of disordered music, pr0n, and games... *sigh*

[gilbert]

i wonder if this is normal i clearly have 16gb installed but in the timings table only shows JEDEC#1,2,3 what happen to number 4 ? and if i check slots 1,2,3,4 they all show the same ?

[fostert]

OK, here I am with the screens...

Mem DRAM freq. showing just 665...

However this SPD picks up the correct readings and acknowledges the true ratings.

Is there anything else I can do to test the integrity of the RAM? CPU-Z also only reports that my GPU has just 1gb of RAM, when DxDiag reports 3gb, so I don't really trust it that much.

Thanks,
Dave.

PS. Loving my first RoG btw, I love all my systems when they are squeeky clean like this, just installing Starcraft 2 now, the first game to go on.

Let's see how long I can keep this one clean for before filling it full of disordered music, pr0n, and games... *sigh*

Firstly, a congrats Dave for fearlessly stepping into the unknown world of modding the G74 BIOS for improved memory clocks. Nice!
Actually if you look you have gained performance...the RAM is now running at latencies of 8 clocks rather than 9. For some apps (particularly games I've read) a memory overclock with tighter timings has more of an effect on performance than an increase in frequency. In fact 8-8-8-23 @ 1333 is fairly impressive...I hope your sticks memtest free of errors running that tight (they should since that is close to JEDEC setting 4 programmed by corsair).
Now, it looks like the BIOS is correctly and successfully reading a JEDEC setting. If you still want 1600 MHz then the question is: did you find anything in exploring the G74 BIOS that could point the system to read setting #5 from the SPDs?

Honestly a gain of one clock tick in each of the latencies is sometimes worth many 100s of MHz...it just depends on what apps you run...every app responds differently to changes in timigs and clocks. I'd be tempted to leave 'er there for a while and enjoy!

[dataDave]

Yeah, I'm sticking with this for now.

I didn't see anything else when opening up the BIOS, apart from the unlocking of the RAM config menus from 'default' to 'USER' which didn't work, as they didn't appear in the BIOS menu. They are there, just hidden away and I can't unlock them.

I ran two and a half passes of MemTest86+ with no issues, I then had to collect my things and leave. I had planned to do 3-5 runs but I will save those for another day.

[OmegaMan]

Yup I did, Works well with 2x8GB @1600mhz. 4 Sticks downclock to 1333mhz. 4x4gb @1866mhz pnp ram downclock @ 1333mhz as well. The G74 doesn't like four sticks in at all ... Go figure

[gilbert]

very nice Dave congratz on the mod bios you are one step closer to your goal, i'm sure there has to be another option that is set to default and needs to be changed to user for the lappy to detect the 1600mhz, great work keep it up .

[Red Rose]

Wait a minute. What about the Kingston Hyperx PnP 1600Mz RAM? I heard and read on the RoG forums that some people have succesfully gotten all 16GB of RAM to work at 1600Mhz. I read that kingston pnp 1600 would work over the corsair 1600.

[MrRuckus]

Just wanted to point out that 16GB @ 1600Mhz in the G74 is possible with 2 sticks. I haven't tried with 4 sticks yet as I have to purchase another 2 sticks of the corsair. I'll report back when I do.

While the 2670QM does not officially support 1600Mhz, it can do it. It also will support more then 16GB of Ram.

16GB Corsair in my G74.
corsair1600.jpg

Intel Burn in with 24GB loaded (8x2 corsair and 4x2 from the original 16GB)
intelburn24gb.jpg

[gilbert]

Wait a minute. What about the Kingston Hyperx PnP 1600Mz RAM? I heard and read on the RoG forums that some people have succesfully gotten all 16GB of RAM to work at 1600Mhz. I read that kingston pnp 1600 would work over the corsair 1600.

The same was said about the corsair and it was not true , I believe that without a bios mod the g74sx would only run at 1333 when all the slots are populated .....