Which RAM module is a better buy? Comparing latancy and memory speed.

[Kneedragger]

Im building a cheap Linux server for fooling around at my house. I don't need much so I'm going with this mobo http://www.newegg.com/Product/Product.aspx?Item=N82E16813157497&ignorebbr=1

Looking at RAM I see some difference in timing and memory speed and wonder which one is actually faster.

http://www.newegg.com/Product/Product.aspx?Item=N82E16820231340

http://www.newegg.com/Product/Product.aspx?Item=N82E16820231213

Thanks for the help.

 

[denis280]

low latency is faster.

 

[ch33zw1z]

First link is 1333mhz cas 9

Second is 1066 cas 7

For server use, whichever one is on the mobo's QVL, after that you won't notice a difference for a sandbox server

 

[Kneedragger]

First link is 1333mhz cas 9

Second is 1066 cas 7

For server use, whichever one is on the mobo's QVL, after that you won't notice a difference for a sandbox server

What is QVL?

Thanks

 

[ch33zw1z]

http://www.asrock.com/mb/Intel/Q1900B-ITX/?cat=Memory

Qualified Vendor List

Buy something off that

Edit, first one on the list:

https://www.amazon.com/Kingston-Technology-1600MHz-PC3-12800-KVR16LS11/dp/B00CQ35HBQ

2nd edit: I was curious about the j1900, so I looked it up. The specs read 8gb max. If you decide to try for >8gb, post results.

http://ark.intel.com/m/products/788...-Cache-up-to-2_42-GHz#@product/specifications

 

[Kneedragger]

Ok yeah now I see what the QVL is, thanks.

The main reason why I posted this question is does a module with higher speed and higher latency still perform better thank a low latency low speed RAM?

 

[mnewsham]

low latency is faster.

Yes but CAS timings aren't the same as latency.

For 1333MHz DDR3 CAS 9 your actual latency is around 13.5ns
For 1066MHz DDR3 CAS 7 your actual latency is around 13.1ns

However 1333MHz has a higher top theoretical bandwidth of 21gb/s vs 17gb/s for 1066MHz.

So since the actual latency is very very close, you'd probably be better off with 1333MHz since it has a decently larger amount of bandwidth available while only being VERY slightly slower latency.

 

[Kneedragger]

Yes but CAS timings aren't the same as latency.

For 1333MHz DDR3 CAS 9 your actual latency is around 13.5ns
For 1066MHz DDR3 CAS 7 your actual latency is around 13.1ns

However 1333MHz has a higher top theoretical bandwidth of 21gb/s vs 17gb/s for 1066MHz.

So since the actual latency is very very close, you'd probably be better off with 1333MHz since it has a decently larger amount of bandwidth available while only being VERY slightly slower latency.

Awesome info thanks for the clarification.

 

[tweakboy]

Don't buy from newegg my friend. They are located here in Los Angeles. When you RMA they send you refurbished hardware. If you buy a new product, sometimes they have been used and supposed to be new package. They send wrong products and used products. The right thing, Buy from Amazon my friend.

 

[Kneedragger]

Don't buy from newegg my friend. They are located here in Los Angeles. When you RMA they send you refurbished hardware. If you buy a new product, sometimes they have been used and supposed to be new package. They send wrong products and used products. The right thing, Buy from Amazon my friend.

I'll check out Amazon thanks.

 

[VirtualLarry]

Eh, don't mind Tweakboy. He's a bit... confused.

I buy stuff from Newegg practically every week, and I've never gotten a "used" item, except for when I buy an "open box" motherboard occasionally. (And they all work fine, so far.)

 

[ch33zw1z]

Newegg has always been good for me. Just bought a full upgrade in July, no problem

Amazon is good too, I'm a member lol

 

[tweakboy]

Im not saying it happened to you Larry...But it has happened to couple people I know. It's the truth, Best place to buy stuff is www.amazon.com It has free shipping on most thing and has the best price out of any site in the net world. thx

 

[nerp]

Im not saying it happened to you Larry...But it has happened to couple people I know. It's the truth, Best place to buy stuff is www.amazon.com It has free shipping on most thing and has the best price out of any site in the net world. thx

Another tweakboy disaster.

If you want original, new stuff, buy from Newegg or Amazon direct.

If you want cheap chinese knockoff products and to be scammed, use the Amazon marketplace.You can use the Newegg marketplace, too.

Tweakboy doesn't read or comprehend facts. Nor do his friends. That's why they don't realize they're buying from ebay scammers using the Newegg or Amazon marketplace. Not Newegg directly.

 

[DTN107]

I never have received a "refurbish" for any RMAs I done with newegg.com.

 

[tweakboy]

Also DTN107 I never said it happend to you...Im not blowing smoke Im tryintg to be serious...sighs