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Questions about DDR2 vs DDR3 for a Phenom II X6 1055T

post #1 of 11
Thread Starter 
I am about to buy a Phenom II X6 1055T, but I need to make a decision on RAM. I know I want to end up with 4GB for this build and I have 4GB of DDR2-800 in my house right now that I could use. However, on the product spec page on Newegg for the 1055T, only DDR2-1066 is listed in the integrated memory controller speed category.

I don't know enough about memory to know if that means an upper bound, a lower bound, or the only supported memory speed for DDR2. There are two questions I have for you fine memory folks:

1. Is it possible to use my current DDR2-800 modules with this CPU? This is the motherboard I've selected.
2. Would I be significantly hindering myself if I went with DDR2-800 instead of getting some DDR3? Back when I was researching parts last year, I remember that there was not a significant difference. How are things these days?
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post #2 of 11
You cannot use ddr2 memory on a ddr3 motherboard, it physically won't fit. You have to go with a set of ddr3 for the motherboard you selected. An alternative would be picking a ddr2 mobo which supports the 1055t but to be honest I'm not sure if such a thing even exists. Hopefully someone can shed some more light on the issue.
Edited by Skylock - 12/18/10 at 11:11pm
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post #3 of 11
My board supports 6core CPU's. Its a terrible board, btw. No VRM heatsinks.
However, there are proper DDR2 boards that support the 6core, either natively or via BIOS update.
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post #4 of 11
Thread Starter 
Ah, I see. DDR3 is an entirely different form. So, by the sound of it, getting a DDR2 board that supports the 1055T would be a bit of a hunt because the assumption is that this CPU will be paired with DDR3 in a DDR3 board. Is that correct? If so, I'll just pick up a few sticks of DDR3. Thank you both for the advice.
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post #5 of 11
I would not recommend that board for a few reasons.

Firstly, it will not support the 1055T out of the box, as you will need to do a BIOS flash to the latest version. You would need another chip which is supported by the motherboard to do the flash.

Secondly, the VRM's are not cooled, and it has a 4+1 Phase power design. X6 chips are very heavy on the phases. Many boards with 4+1 phase power designs have kicked the bucket while running a hexacore. :/
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post #6 of 11
The 1055T is an AM3 CPU. You COULD put it on an AM2+ board and use DDR2 RAM if you really wanted to.
But the 1055T was designed to be used with DDR3, and it does its best work with DDR3.
And finding a quality AM2+ board with Hex-Core support might be a bit hard.

The performance difference is still pretty much the same though. You wont see any difference between the 2, but your hardware will.

Edit:
What Baldy Said.
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post #7 of 11
Thread Starter 
Thanks for the feedback on the mobo; I selected that on a whim because it was cheap and advertised 6 core support. Is there a board you have in mind that I should go with? I'm trying to keep the cost down, but I'm not totally cash-strapped. Under $100 should be good.

How about the MSI 870S-G54?
http://www.newegg.com/Product/Produc...82E16813130309
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post #8 of 11
http://www.newegg.com/Product/Produc...82E16813131668
Within budget and have enough power phase for X6 OC.
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post #9 of 11
Quote:
Originally Posted by Baldy View Post
I would not recommend that board for a few reasons.

Firstly, it will not support the 1055T out of the box, as you will need to do a BIOS flash to the latest version. You would need another chip which is supported by the motherboard to do the flash.

Secondly, the VRM's are not cooled, and it has a 4+1 Phase power design. X6 chips are very heavy on the phases. Many boards with 4+1 phase power designs have kicked the bucket while running a hexacore. :/
Kick the bucket doesn't just mean stop working; it means to catch fire. I do not suggest using this motherboard with a 1055T or any other 125W processor.

For $99, 84 AR this board has 8+2 power phase/mosfet heatsinks, much better for a 1055T. Note that this board is notorious for a vDroop, which might make overclocking a bit challenging. There's none other that matches this price.
post #10 of 11
Thread Starter 
Thank you all for the information. The more I read about hexa-core systems, the less I think I will actually need one. I've decided to look at a simpler quad-core system for now.
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