bought new intel DX48BT2 mobo

April 7, 2014 at 15:33:56
Specs: Windows 7 ultimate, QX9770/ 8gb
I have read reviews that this mobo doesn't support 8gb of ddr3 1600mhz but only 4gb at that speed.

However it does support 8gb running at 1333mhz.

Why is this so, and will the reduction in the speed make a big difference?

Thanks


See More: bought new intel DX48BT2 mobo

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#1
April 8, 2014 at 05:37:23
In the future, I suggest you stay away from Intel boards. You would have been better off getting a board made by one of the major aftermarket board manufacturers (ASUS, Gigabyte, MSI, etc.). That way you'd have much better control over the BIOS settings. Regardless, make sure you manually configure the memory settings in the BIOS, do NOT use AUTO. Also, make sure you have the latest BIOS version (2006).

https://downloadcenter.intel.com/Se...

For best performance with Core 2 systems, the FSB/DRAM ratio should be 1:1. Since you have a QX9770 @ 1600MHz FSB, the RAM speed should ideally run at 1600MHz. Your system will be taking a slight performance hit by running it at 1333MHz. And apparently the board's performance isn't all that great to begin with. From the trusted review site:

"We were disappointed that the DX48BT2 didn't make full use of our 1,600MHz memory but it's the low performance that would make us nervous about recommending this motherboard."

http://www.trustedreviews.com/Intel...

Here's some info from your motherboard manual:

• All DDR3 1600 MHz memory recommended for use on this board is based on the XMP format. See the following website for tested XMP modules:
http://www.intel.com/personal/gamin...
• If you are using DDR3 1600 MHz DIMMs, it is recommended that you only
populate two of the four DIMM slots, specifically one slot in each channel. It is recommended that you populate slot 1 of each channel (black connectors).
• The maximum system memory for DDR3 1600 is 2 GB using 1 Gbit technology memory in a 1R x 8 configuration (single-sided modules).
• Remove the video card in the Primary PCI Express x16 connector before installing
or upgrading memory to avoid interference with the memory retention mechanism.

http://downloadmirror.intel.com/156...

message edited by riider


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#2
April 8, 2014 at 10:45:43
thanks for the info riider.

I was wondering about the ASUS P5E3 Deluxe x38. I read the specs for this mobo and it says it supports ddr3 1600mhz but oc'ed.

Does that mean it fully supports ddr3 1600mhz or not?

Thanks


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#3
April 9, 2014 at 10:11:03
If you just bought the Intel board, there's not much point getting a different one unless you can return it or resell it. I'm curious why you're building an "old" system? I realize the QX9770 is a decent CPU but the LGA775 format is a dead end. You'd be better off getting a Core i3, i5, or i7 & a modern motherboard.

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#4
April 9, 2014 at 12:08:00
partly for sentimental reasons. I have something for the core 2 processors and i wanted the best of the core 2 line. Also, i decided to go this route because if i got an i7 it will be outdated soon so id rather have something pretty good and not really worry if its outdated.

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#5
April 12, 2014 at 16:58:34
If i keep this INTEL dx48bt2 mobo how much of a decrease in performance from 1-10 or percentage wise will i get if the ram speed is 1333mhz and not 1600mhz which is the same speed of the cpu fsb?

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#6
April 12, 2014 at 21:04:27
It seems that if you run the memory at 1333MHz then you can run it in dual channel mode, but if you run it at 1600MHz you have to run one stick on each channel for single channel mode only. This says to me that 1333MHz in dual channel mode will be an advantage and should minimize the 'hit' you would take by running it slower. Then there is the non-standard ratio to consider (not 1:1 CPU:RAM).... I am not sure who could quantify this for you so you might have to try it yourself.
Personally, if you could return or sell it, that is the option I would go with.... But then, I would be upgrading to a socket 1150 (Z87) motherboard and a 4670K and 1600MHz or slightly faster memory and not worry about being obsolete anytime soon. My reasoning is this: I currently have a Gigabyte socket 775 P43 motherboard with a Core2 Duo E8200 OC to 3.2GHz on 800MHz RAM and it really is fine for most things I do with my computer. I have to be able to justify upgrading to a modern CPU/MB just because I want it faster and want to build something new (soon). With a nearly state of the art system at a moderate price point that is significantly faster than what I have now, I may never need anything newer or faster (that might make any future builds difficult to justify). It really will not matter to me if 5 or 6 months later the next generation comes out because I will be set for 5 years or more. I will just have to hope that someone else in the family will need upgrading before that so I can build something else (though most use laptops now).

You have to be a little bit crazy to keep you from going insane.


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#7
April 14, 2014 at 15:11:25
Does anyone know if the Asus p5e3 premium has the same problem as the
Intel dx48bt2 being that it only supports up to 4gb of ddr3 @1600mhz?

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