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Question about RAMFollow

#1 Mar 16 2013 at 7:46 PM Rating: Decent
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Upgrading my RAM to a bit more. I have 4x2GB atm, I want to upgrade to 16GB of RAM just to have it upgraded.

I was looking and found this RAM and found this G.SKILL Ripjaws Z Series 16GB (4 x 4GB) 240-Pin DDR3 SDRAM DDR3 1866 (PC3 14900)

Mainly this RAM will be used for gaming. I'm not real sure on how good G. Skill is, so any recommendations is fine with me. I would just like it to be good RAM for gaming. I have an AMD FX-8150, if the CPU matters.

Any help is appreciated.

Thank you
#2 Mar 16 2013 at 9:06 PM Rating: Excellent
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Gskill is decent. I usually use Corsair instead, but no issues with Gskill in general. Just avoid OCZ like the plague. Also make sure your motherboard will take 16GB ram. almost all of them will, some of the lower end ones either won't, or may require a bios update.
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#3 Mar 16 2013 at 10:28 PM Rating: Decent
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Alrighty, thank you, Kaolian.

I normally use Kingston Hyper X, so was unsure about the G.Skill. I found some Corsair as well. I was just looking for a lower CAS latency, as I have heard those are better for AMD. To be honest, I really am not sure if that is true or not.

Corsair I found: CORSAIR DOMINATOR 16GB (4 x 4GB) 240-Pin DDR3 SDRAM DDR3 1866

My motherboard, ASUS Crosshair V Formula (just incase it is needed) says it can take up to 32GB.

I found some RAM that is 2x8GB, but I was just wanting to fill up all 4 slots. The 32GB set of RAM I found was just expensive, and I doubt I will ever need that (for now anyways) much RAM for gaming.

Thanks again.

Edit: I put the wrong RAM in link

Edited, Mar 16th 2013 11:30pm by DecendentMonk
#4 Mar 16 2013 at 11:43 PM Rating: Excellent
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Oh yeah, the asus higher end gaming motherboards will take whatever you can throw at it, so you'll be fine.

when talking ram speed and latency, basically smaller numbers are better, they will be faster, and generate less heat which will allow you to either clock them faster, or make them last longer with less likelyhood of faiulure. Here's a good explanation of what the numbers actually mean (witten in DDR2 era, but the concepts still apply:

http://forums.firingsquad.com/t5/Hardware-Discussions/RAM-Latencies-Explained/td-p/159817

some other guy somewhere wrote:
RAM speed is measured in nano seconds (ns). The fewer, the better, the faster.

Here are two of the most common RAM speeds:.

200Mhz = 5ns
250Mhz = 4ns.

Two common Latencies for these speeds:.

200MHz = 2-2-2-5
250MHz = 2.5-3-3-7.

Primary Latencies:
tCAS - the number of clock cycles needed to access a certain column of Data in RAM. CAS Latency, or simply CAS, is known as Column Address Strobe Latency, sometimes refered to as tCL. In 2.5-3-3-7, this is the 2.5.
tRCD - the number of Clock cycles needed between RAS and CAS. It is the time required between the computer defining the row and column of the given memory block and the actual read or write to that location. Stands for Row address to Column address Delay. In 2.5-3-3-7, this is the first 3.
tRP - the number of clock cycles needed to terminate access an open row of memory, and open access to the next row. Stands for Row precharge time. In 2.5-3-3-7, this is the second 3.
tRAS - the miniumum number of clock cycles needed to access certain row of data in RAM between the data request and the precharge command. Known as Active to Precharge Delay In 2.5-3-3-7, this is the 7.
.
So therefore:.
2 cycles @ 200Mhz = 10ns
2 cycles @ 200Mhz = 10ns
2 cycles @ 200Mhz = 10ns
5 cycles @ 200Mhz = 25ns.

2.5 cycles @ 250Mhz = 10ns
3 cycles @ 250Mhz = 12ns
3 cycles @ 250Mhz = 12ns
7 cycles @ 250Mhz = 28ns.

So in terms of only the memory/ data access / latencies have gone up a bit. This is slightly slower..
Proportionally 2-2-2-5 @ 200Mhz translates to 2.5 - 2.5 - 2.5 - 6.25 @ 250Mhz. This would be the same..

2.5 cycles @ 250Mhz = 10ns
2.5 cycles @ 250Mhz = 10ns
2.5 cycles @ 250Mhz = 10ns
6.25 cycles @ 250Mhz = 25ns
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#5 Mar 19 2013 at 10:40 AM Rating: Decent
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Thank you.

I went ahead and got the Corsair Dominator. I think it will fit my needs. Seems like it anyways, had some nice reviews.

Thanks again.
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