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ASUS P8P67PRO BIOS 3207 - 16 GB installed but only 8 GB Detected

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July 12, 2012 2:31:50 AM

This is my first time ever asking a forum post about these sort of situations so I apologize upfront if I don't provide the correct information or if I sound stupid in describing my problem. I've searched this forum, the ASUS forum and any other link that Google provided without finding an answer.

Please ask if you need more information and I'll reply pretty quickly.


Specs:

MOBO: Asus P8P67PRO Rev3 - Bios 3207
CPU: i5-2400s
OS: Windows 7 Ultimate 64 Bit

My Bios is set to XMP, every other option has not been touched as I'm not very experienced in messing with Bios settings.
My bios detects 8GB of RAM running at 1333MHZ.
CPU-Z detects all 16GB of ram.

I have two seperate pairs of memory, my original set and the ones I just purchased. I wasn't aware at the time that the new pair I bought was the same speed so I was thinking I could just combine them all to get 16GB (I must be dead wrong).


My original 8GB of ram was Corsair PC3-10700H Part Number CMZ8GX3M2A1600C9 and they are located in light blue slots of the mobo.

The new ram I purchased was 8GB of Mushkin PC3-10700 Part Number 991891 (REDLINE)

Im just curious if it's something I am doing wrong, or if they aren't compatible.
I've tried the clearing of the CMOS and the removal of the battery and the AC powering being off/unplugged and all that. I've tried a Memtest and have found no errors but again it only detects 8gb.

I've tried using 1 Mushkin 4GB stick with 1 Corsair 4GB stick and my Bios was detecting 8GB; however adding one more of either brand or even both of the extra sticks still only detects a total of 8GB on the Bios, during bootup and when checking my computer propterties. Again CPU-Z does detect 16GB.


Any ideas? I haven't bothered with the CPU but I have never had an issue so I'm really confused. Plus I have one of the biggest Heat sinks (v8) that it's such a pain to take off if its somethen related to the CPU or MOBO it's best to replace both in my opinion.

I can also just handle going 8GB with my new Mushkin's but I'm at least being optimistic about having more RAM since I do a lot of Art and Video rendering.
a c 146 } Memory
a b Ĉ ASUS
July 12, 2012 2:36:17 AM

Hi there,

Do u have one RAM in Black slot and another one in Blue slot?
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July 12, 2012 2:38:35 AM

At the moment I've tried to pair both pairs of rams together so slot 1 and 3 have mushkin sticks and 2 and 4 have the corsair sticks.
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July 12, 2012 2:40:13 AM

Originally the MOBO states when more than one stick of RAM is installed to use the blue DIMM slots or the mobo will not boot so that's what I did originally.

Are you stating I should place one stick into black and the other into blue? That will not activate the Dual Channel I don't think? or is that the point?
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a c 146 } Memory
a b Ĉ ASUS
July 12, 2012 2:40:51 AM

OK, can u reset again this way.

Reset the CMOS memory the right way as is described in the motherboard manual using the clear CMOS link with the power cord unplugged.
And when the battery is out, press the power button to discharge all the electricity from the system.
How To Clear CMOS @ http://pcsupport.about.com/od/fixtheproblem/tp/clearcmo...

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a c 146 } Memory
a b Ĉ ASUS
July 12, 2012 2:41:52 AM

sbAutumn said:
Originally the MOBO states when more than one stick of RAM is installed to use the blue DIMM slots or the mobo will not boot so that's what I did originally.

Are you stating I should place one stick into black and the other into blue? That will not activate the Dual Channel I don't think? or is that the point?

Do u have 4 sticks?
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July 12, 2012 2:43:16 AM

Yes I have 4 x 4gb sticks.
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a c 146 } Memory
a b Ĉ ASUS
July 12, 2012 2:44:55 AM

Right, so use Mushkin in 2 x black slots and corsair in 2 x blue.
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a c 146 } Memory
a b Ĉ ASUS
July 12, 2012 2:49:45 AM

Set the BIOS RAM speed to 1600, no XMP.
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July 12, 2012 2:51:29 AM

"Set the BIOS RAM speed to 1600, no XMP."

So select the Manual Option?
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a c 146 } Memory
a b Ĉ ASUS
July 12, 2012 2:53:14 AM

Yes.
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July 12, 2012 3:06:39 AM

When I clear the CMOS and turn the PC back on it asks me to resetup the BIOS (expected). I go into the AI Tweaker section and select Manual. I then selected 1600 as the speed and saved/reset.

My BIOS now has the red Memtest light remaining Solid Red without a boot.
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July 12, 2012 3:11:47 AM

If I clear the CMOS again it boots up and says overclocking failed and asks me to go into the BIOS to fix it.
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a c 146 } Memory
a b Ĉ ASUS
July 12, 2012 3:15:44 AM

The numbers are not sitting together.
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a c 146 } Memory
a b Ĉ ASUS
July 12, 2012 3:16:06 AM

We need to check the voltage.
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July 12, 2012 3:22:16 AM

Tell me what you need and I'll check :)  using two computers so I can answer quickly.
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a c 146 } Memory
a b Ĉ ASUS
July 12, 2012 3:24:27 AM

That's what's wrong.

7-9-8-24
Voltage
1.65V
==========
9-9-9-24
Voltage
1.5V
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a c 146 } Memory
a b Ĉ ASUS
July 12, 2012 3:25:23 AM

Can u set it up to Corsairs setting?

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a c 146 } Memory
a b Ĉ ASUS
July 12, 2012 3:26:10 AM

The red line is not even compatible with your CPU : )

We need to adjust it.
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July 12, 2012 3:26:13 AM

With the Corsair RAM being 9-9-9-24 does that mean that these RAMS just can't be compatible or does that mean I need to overclock the settings on the Corsair to match the timings for the fastest RAM setting.
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a c 146 } Memory
a b Ĉ ASUS
July 12, 2012 3:27:47 AM

sbAutumn said:
With the Corsair RAM being 9-9-9-24 does that mean that these RAMS just can't be compatible or does that mean I need to overclock the settings on the Corsair to match the timings for the fastest RAM setting.

Pretty much.

We need to mach the Corsair timing and voltage to 1.5V, not the 1.65V

1.65V can kill your CPU.
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July 12, 2012 3:37:02 AM

So I tried 9-9-9-24 with 1.5 Volt and I cannot even get the system to boot on reset, just has a solid red mem test light.
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a c 146 } Memory
a b Ĉ ASUS
July 12, 2012 3:42:17 AM

I don't think these 2 sets will ever play nice.

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a c 146 } Memory
a b Ĉ ASUS
July 12, 2012 3:42:46 AM

Can u rise the voltage to 1.555?
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July 12, 2012 4:03:13 AM

If I take out the old 9-9-9-24 RAM and put in just the normal ram I'm getting 8-8-8-22 at 1.5v but thats without the other RAM obviously. It's sad but maybe I'll just sell my CORSAIR Set on Craigslist or somethen and just upgrade to get another 8gb of the Mushkin or just say at 8GB period.

Thank you though for the help :) 
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a c 146 } Memory
a b Ĉ ASUS
July 12, 2012 4:04:17 AM

That red line is not good for your CPU.
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Best solution

a c 146 } Memory
a b Ĉ ASUS
July 12, 2012 4:06:28 AM

I recommend CORSAIR Vengeance 99% of the time, quality RAM and low profile with XMP profile.
And if u will get an aftermarket CPU cooler, low profile is the worry free remedy with perfect fit with any large cooler.
CORSAIR Vengeance 16GB (4 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Vengeance Low Profile heat spreaders have a reduced height of 1.03" (26.25mm). They're designed for high-performance systems with extra-large CPU coolers, small form factor system builds, or any other space-constrained application where standard Vengeance memory might not fit.

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July 19, 2012 2:45:01 AM

Best answer selected by sbAutumn.
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a c 146 } Memory
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July 19, 2012 4:59:22 AM

Good luck!
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a c 146 } Memory
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July 19, 2012 4:59:29 AM

This topic has been closed by Nikorr
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