What RAM Should i keep in my RIG.

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ldewitt

ldewitt

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Specs:
MOBO: Sabertooth 990FX
CPU: FX-8120 OC@ 4.1
RAM: KINGSTON 12800
PSU: Thermaltake Black WIdow 850w
should be sufficient enough to answer my question if you need more just ask.

wow i feel like an idiot now. Questioning my PC component knowledge now. My question is should i keep the KINGSTON 1600(12800) RAM in or put my G Skillz 1600 value RAM back in.


Link to motherboard specs:
http://www.newegg.com/Product/Product.aspx?Item=N82E16813131736
 
Solution
luckiest charm
Actually 1600 MHz is DDR3 - 1600.
Its the RAM's max clock speed.

12800 is its transfer rate. Its 12800 MB/s.

There is a formula for this (For DIMMs) -

Max Transfer Rate = Clock x 8

That gets us -

Clock = Max Transfer Rate / 8

1600 = 12800 / 8
12800 / 8 = 1600 MHz

In simple words, PC3 - 12800 RAM is DDR3 - 1600 RAM. Both are same things as proved by the formula.
I hope you get it now. So far no RAM with 12800 MHz speed is made for PCs.

Edit - Glad you got it already. :)

I would advise you to put as much of them in as possible. Try to make a combination out of both of them which would result in highest memory since its the speeds and timings which matter, not the brand. Don't forget to OC if its possible, or at least get the...
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luckiest charm

luckiest charm

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Actually 1600 MHz is DDR3 - 1600.
Its the RAM's max clock speed.

12800 is its transfer rate. Its 12800 MB/s.

There is a formula for this (For DIMMs) -

Max Transfer Rate = Clock x 8

That gets us -

Clock = Max Transfer Rate / 8

1600 = 12800 / 8
12800 / 8 = 1600 MHz

In simple words, PC3 - 12800 RAM is DDR3 - 1600 RAM. Both are same things as proved by the formula.
I hope you get it now. So far no RAM with 12800 MHz speed is made for PCs.

Edit - Glad you got it already. :)

I would advise you to put as much of them in as possible. Try to make a combination out of both of them which would result in highest memory since its the speeds and timings which matter, not the brand. Don't forget to OC if its possible, or at least get the timings a bit high.
 
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Solution
ldewitt

ldewitt

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Alright should i put the G Skillz in the A2 b2 then put the kingston in a1 b1 or does it even matter.
 
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luckiest charm

luckiest charm

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No you won't notice nothing unfortunately.

Anything higher than 1600 MHz is useful only for rendering purposes. That is the field where fast RAM is required.
Even in gaming, 1600 MHz is more than enough.

I would advise you to stick to your modules as they are the best ones for you.
If you really want to notice the difference during day to day tasks or booting, etc, did you hear about RAM timings? If you did, then you would already get what I mean. If not then I will explain. :)

You need to lower RAM timings a bit to see the difference in bios. If its 9-9-9-24, get it down to 7-7-7-21. Don't get it too less or system would get unstable, just like overclocking. When it comes to timings, its the lower the better. Most people lower timings in order to get the RAM stable after a memory overclock. Just see if your motherboard supports it.
 
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ldewitt

ldewitt

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My motherboard definitely supports it (sabertooth 990FX) and i would like to know more about this because i have a SSD and my boot time is still around average kinda disappointing to be honest, and the time it takes my system to be ready for me to do tasks. Its kinda of weird because as soon as it boots if i click my browser right away i can get online no problems quick as always but if i wait a min or so none of my programs will open. But this is probably related to my network card since it looks like its loading and takes forever yet i still can get online.
 
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luckiest charm

luckiest charm

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Well booting should be a breeze with an SSD. Do you have your primary partition (Where you have Windows installed) on SSD or on HDD? Make sure its SSD otherwise you would get no benefit of speed. But I guess this is quite general thing and you are experienced enough not to do such a mistake. So, I'll skip this one.

Now the RAM Timings, yes.

Well, as you know, its the RAM in which all the data which needs to be accessed by the system constantly is stored. Because RAM is not built into the CPU, the CPU sends the data and gets the data from RAM at a specific speed. This speed is called CL (CAS Latency). Basically its the speed which measures the delay caused in returning the data needed to CPU to perform actions. This delay is measured in clocks.

The memory timings are given through a series of numbers; for instance, 4-4-4-8, 5-5-5- 15, 7-7-7-21, or 9-9-9-24. These numbers indicate the amount of clock cycles that it takes the memory to perform a certain operation. The smaller the number, the faster the memory.

If I get in more deeper, I fear it might get TL : DR.
Well, to change memory timings, get to your bios, go to M.I.T. or similar section. Choose Advanced Memory Settings (Or similar). Change memory timings mode from Auto to Manual. Now timings section should get unlocked.

There should be 4 options for you - CL, tRCD, tRP, tRAS. Select each one of their values individually and get them lower by 2. Like, 10 becomes 8, 9 becomes 7, and so on. Change tRAS to the addition of first 3 of them. Like if all of them are 7-7-7 after editing, tRAS should be 21. Save those and restart the system. Now the newer timings should have applied and you should notice the difference. You may experiment with this if you want, but remember, there is always a risk involved as this is kind of same as overclocking. You may increase clock speed of your RAM too if you want, from 1600 to 1866 since your motherboard supports it.
 
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