RAM memory speeds

[deathtoaster45]

I currently have 16gb of RAM in my rig and was wanting to upgrade to 32gb. I have 2 Corsair Vengeance 16gb(8x2) memory that runs at 1600MHz. If the second pair I got was Corsair Vengeance Pro, would it be an issue that its speed is 2400MHz? Thanks

 

[alexhelvetica]

Why do you want to upgrade?

[deathtoaster45]

Why do you want to upgrade?

No specific reason, just because I want my rig to be slightly better and want to make sure it never runs into any problem.

[ADZ_123_!"£]

All the ram must be running at the same speed so you would end up with it all running at 1600mHz

[Glenwing]

RAM isn't inherently one speed or another. "DDR3 2400" only means those particular modules are rated for overclocking up to 2400MHz as tested by the manufacturer. It will default to 1600 the first time you boot with it.

[slightlyjaded]

Mismatching memory is always a tricky subject. It does work, it can even work well, be aware though that it will only work at the speed of the lowest set of DIMMs, and if you can't match the CAS timings, then it can be very unstable when pushed under load.

 

It can work, but what most of us recommend is to buy the same set of RAM for your upgrade, or at least to match the memory speed, and timings.

[Valkyrie Lenneth]

it wont be an issue if both are from corsair, but the difference in a high frequency kit and a low frequency kit is its density, higher frequency kits are more dense, if u would set both at 1600 it can be stable sure no problem, 4sticks might need some overvolting/mem controller overvoltages in some cases

 

though its best to keep the same ram sticks together when going 4sticks, buy the exact same kit

[Valkyrie Lenneth]

No specific reason, just because I want my rig to be slightly better and want to make sure it never runs into any problem.

keep in mind that 8gb is enough for gamers and 16gb is already quite alot, 32gb is overkill unless u do alot of rendering, for gaming ud be better off staying with 2 sticks

 

there will be no difference between 16gb kits and 32gb kits if u dont use the extra ram

[alexhelvetica]

No specific reason, just because I want my rig to be slightly better and want to make sure it never runs into any problem.

NO, JUST NO!!!

16GB's is overkill, get it when is cheap latter on (Maybe 5 Years) if you need it

[Constantin]

When ugrading or buying new ram, it is very important to check the latency.....

The same ram with low latency can cost x3~4 times more and a lot more effective.....

[slightlyjaded]

it wont be an issue if both are from corsair, but the difference in a high frequency kit and a low frequency kit is its density, higher frequency kits are more dense, if u would set both at 1600 it can be stable sure no problem, 4sticks might need some overvolting/mem controller overvoltages in some cases

 

though its best to keep the same ram sticks together when going 4sticks, buy the exact same kit

Actually I believe the difference in high frequency kits is the binning of the chips, and that they are more stable when overclocked, allowing them to achieve those speeds without stability issues. High ram capacity kits either have more chips on the stick, or more dense chips.

[Valkyrie Lenneth]

Actually I believe the difference in high frequency kits is the binning of the chips, and that they are more stable when overclocked, allowing them to achieve those speeds without stability issues. High ram capacity kits either have more chips on the stick, or more dense chips.

the denser chips are better coz they tighten easier and clock better

[slightlyjaded]

the denser chips are better coz they tighten easier and clock better

I'm not saying they don't. What I'm saying is that high frequency ram chips aren't that way because of density. They are that way because they are closer to being that perfect piece of silicon, and run better because of it. The ram manufacturers take these high quality chips and reserve them for their high frequency chips. You're probably getting exactly the same chips in a 2133 kit as a 2400 kit, just the 2400 kit is guaranteed to work at that speed where as the 2133 kit might run at 2400, but you're taking your chances OCing to that level.

[Valkyrie Lenneth]

I'm not saying they don't. What I'm saying is that high frequency ram chips aren't that way because of density. They are that way because they are closer to being that perfect piece of silicon, and run better because of it. The ram manufacturers take these high quality chips and reserve them for their high frequency chips. You're probably getting exactly the same chips in a 2133 kit as a 2400 kit, just the 2400 kit is guaranteed to work at that speed where as the 2133 kit might run at 2400, but you're taking your chances OCing to that level.

yah its pretty common to get kits rated for 2400 cas 11 to run at 2133 cas 9 ect,

 

same with 1600cas 9 kits , some of them have chips rated for 2400 cas 9/11   its luck of the draw really

 

PSC based memory is usually 9-9-9   or 9-11-9  / 8-10-8  and so on

 

Samsung chips are usually 9-11-11  8-9-9  11-13-13 ect

 

Hynix chips(the chips that really u want to avoid) are usually  9-10-11 10-11-12

 

timings and such

 

best overclocking chips known are samsung ( for mhz and pretty decent timings )

 

best tightening kits are PSC ( well known for reducing timings without much voltage required )

 

remember these are USUALLY the case, not always... could also be a samsung chip that has 9-11-9 timings but its not that common

 

same for hynix on 9-9-9 or so