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Twin3x2048-1333c9 in P5E3 at 533.3MHZ


Deepwoods

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Hello,

 

Since I am new to all this, I was reviewing the performance of my new PC and I see that the Twin3x2048-1333c9 is running at 533... which means that it isn't running at full speed. (reported by CPU-Z)

 

My experience is limited, so if anyone could advise me on how to set the BIOS to support this memory I would be very grateful.

 

My system specs are up to date, but it you have any other questions, please let me know.

 

Regards,

 

JT

 

Asus P5E3 Deluxe, Bios 1109 all other specs 'out-of-the-box' stock.

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Hello again,

 

I read more on this forum, changed the BIOS Setting to DDR3-1333, and rebooted.

 

CPU-Z (Memory) says:

DRAM Frequency: 667.9

FSB:DRAM 1:2

 

On the next tab

CPU-Z (spd) says:

Slot#1 DDR3

Module size:1024

Max Bandwidth: PC3-8500F (533MHz)

Part # CM3X1024-1333C9

 

 

CPU-Z Validator ID = 343003

 

 

Dunno if that means anything, but it looks contradictory to me.

I am still looking.

 

TIA,

 

JT

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CPU-z reports the memory at it's native speed. Multiply this by the Dual Channel and you get the Dual Channel Mode speed which is (for your system) 667 X 2 (Dual Channel) = 1333Mhz.

 

For example:

 

http://www.xbitlabs.com/images/memory/ddr3-1600/ddr3-1333cl7.png

 

Thus you have researched and set the proper values and are now at the correct speed. Good on you to find the issue and alleviate it yourself. :)

 

D

 

Hello again,

 

I read more on this forum, changed the BIOS Setting to DDR3-1333, and rebooted.

 

CPU-Z (Memory) says:

DRAM Frequency: 667.9

FSB:DRAM 1:2

 

On the next tab

CPU-Z (spd) says:

Slot#1 DDR3

Module size:1024

Max Bandwidth: PC3-8500F (533MHz)

Part # CM3X1024-1333C9

 

 

CPU-Z Validator ID = 343003

 

 

Dunno if that means anything, but it looks contradictory to me.

I am still looking.

 

TIA,

 

JT

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Hi Derek,

 

Thanks for the compliment, but I am not sure it is yet appropriate.

 

I agree with your comment that the 667 bus speed indicates that the speed should be set right.

 

The question then becomes why the next page in CPU-Z indicates that it isn't DDR3-1333 at 667 MHz.

 

CPU-Z (spd) says:

Slot#1 DDR3

Module size:1024

Max Bandwidth: PC3-8500F (533MHz) <------

Part # CM3X1024-1333C9 <------

 

I realize I have probably missed something obvious to everyone but me, but it just doesn't look right. If you tell me it is a flaw in CPU-Z that's OK too... as long as I can quit questioning my sanity.

 

Thanks again!

 

JT

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The actual SPD results as a graphic so I can graphically represent show the SPD (Serial Presence Detect), not the actual or abilities of the DRAM. Your part number shows that this is 1333Mhz DDRIII. The Max bandwidth is for JEDEC Auto Settings so that you can gain boot, to then manually set to the proper values.

 

http://www.hardware.fr/medias/photos_news/00/20/IMG0020097.gif

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Greetings and thanks Derek,

 

So, I kept searching, and was looking at the Asus forums, and someone mentioned that this memory runs at 1.7v. MoBo defaults to 1.5. :o:

 

So I checked out this site: http://www.corsair.com/_datasheets/TWIN3X2048-1333C9.pdf

 

and verified that spec.

 

I also noticed the statement:

SPD programmed at:

JEDEC standard 7-7-7-20 values at 1066MHz

 

So given that info, I have come to KNOW you were right. :idea:

 

Thanks for keeping me on track and searching.

 

I still have some questions about system performance under SiSSandra, but I think that is best directed elsewhere.

 

Thanks again!

 

JT

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