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I need "DDR3 1333/1066" memory but where is that found on Newegg?

D

decrescendo

Member
I believe I'm going to be buying one of these two motherboards for use with a Core i3-2100 processor on what will mostly be a home media server machine:

http://www.newegg.com/Product/Produc...82E16813121509
or
http://www.newegg.com/Product/Produc...82E16813131710

Both of them say they require "DDR3 1333/1066" memory. Are both numbers speed or is the second the PC3 number?

When I look on Newegg, I see the following sections that, to me, look like they could apply:
DDR3 1066 (PC3 8500)100007611 600006050 600006125 (30) DDR3 1333 (PC3 10600)100007611 600006050 600006126 (91) DDR3 1333 (PC3 10660)100007611 600006050 600006137 (12) DDR3 1333 (PC3 10666)100007611 600006050 600006131 (79)
However, I'm not totally sure which of these 4 "roads" to take. I don't see "1333" and "1066" written together anywhere in those 4 options and I want to be sure to pick compatible memory.

Could anyone lend me a hand? I'm looking for a 2x2GB setup.
 
Those are the two speeds it supports. Unless there is a big cost difference, I would just buy the faster stuff. In fact, I would even look at DDR3 1600 as long as it wasn't too much more expensive. Sometimes there are sales or specials and the cost difference can be near zero.

My big recommendation would be to get DDR3 that is 1.5v.

What has almost zero importance to me is brand and heatspreader (the fancy slim heatsink). Voltage, cost and speed are what is important to me.
 
Zap said:
Those are the two speeds it supports. Unless there is a big cost difference, I would just buy the faster stuff. In fact, I would even look at DDR3 1600 as long as it wasn't too much more expensive. Sometimes there are sales or specials and the cost difference can be near zero.

My big recommendation would be to get DDR3 that is 1.5v.

What has almost zero importance to me is brand and heatspreader (the fancy slim heatsink). Voltage, cost and speed are what is important to me.
Click to expand...

So I imagine 1333 is faster than 1066 and then 1600 is faster than 1333. How do I know if 1600 is supported on those two boards if it just mentions 1333 and 1066?

A few questions:
What exactly does the voltage number mean to me in a performance sense?
What does the "PC3" number mean in those Newegg categories?
 
decrescendo said:
So I imagine 1333 is faster than 1066 and then 1600 is faster than 1333. How do I know if 1600 is supported on those two boards if it just mentions 1333 and 1066?

A few questions:
What exactly does the voltage number mean to me in a performance sense?
What does the "PC3" number mean in those Newegg categories?
Click to expand...

If you get memory that is rated to 1600 but your board only supports up to 1333, then your memory will be automatically configured to run at 1333 speed by default. 1600 will be important if you use the memory in a future platform or decide to overclock your memory.

1.5V is important because the SNB CPU's are not very tolerant of the high-voltage performance DDR3 DIMMS used in previous generation CPUs.

And PC3 is just another designation for the memory being DDR3, just as "PC2" designates a DDR2 module.
 
GammaLaser said:
If you get memory that is rated to 1600 but your board only supports up to 1333, then your memory will be automatically configured to run at 1333 speed by default. 1600 will be important if you use the memory in a future platform or decide to overclock your memory.

1.5V is important because the SNB CPU's are not very tolerant of the high-voltage performance DDR3 DIMMS used in previous generation CPUs.

And PC3 is just another designation for the memory being DDR3, just as "PC2" designates a DDR2 module.
Click to expand...

So a 1333 stick of memory with any PC3 number will serve me just fine?
 
decrescendo said:
So a 1333 stick of memory with any PC3 number will serve me just fine?
Click to expand...

Yeah, that number next to PC3 denotes the peak bandwidth of the module. For a stick running at 1333 MT/s, you will have ~10667 (1333 * 8 bytes per cycle). Therefore PC3-10667 more or less, some vendors seem to round differently than others.
 
jjmIII said:
http://www.newegg.com/Product/Produc..._-20178333-L0B

Code: EMCKDJC22 $45 AR with code
Click to expand...

Ah. Sold out. I didn't act quickly enough.

GammaLaser said:
Yeah, that number next to PC3 denotes the peak bandwidth of the module. For a stick running at 1333 MT/s, you will have ~10667 (1333 * 8 bytes per cycle). Therefore PC3-10667 more or less, some vendors seem to round differently than others.
Click to expand...

Ok cool. Well I'll look for a good deal in the world of 1333 then. I seem to have missed the 2x4GB deal noted above.
 
decrescendo said:
So I imagine 1333 is faster than 1066 and then 1600 is faster than 1333. How do I know if 1600 is supported on those two boards if it just mentions 1333 and 1066?

A few questions:
What exactly does the voltage number mean to me in a performance sense?
What does the "PC3" number mean in those Newegg categories?
Click to expand...

The memory controller is built into Sandy Bridge CPUs, and Intel specifies 1066/1333MHz data rate for the DDR3 memory.

1.5v is the JEDEC DDR3 standard voltage. Memory performance comes from data rate and latency. Voltage by itself has nothing to do with performance. However, more voltage means you can crank up the performance, basically overclocking the memory, just like you would increase voltage to overclock the CPU. Memory that is sold at a voltage higher than 1.5v just means the manufacturer has already overclocked it.
 
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