1X16 gb ddr4 ram vs 2x8 gb ddr4 ram

[Anjani]

I have 1x16 gb ddr4 adata ram.. I have seen gaming benchmarks where it was shown that 2x8 gb ddr4 ram are much faster than single 16 gb stick.. Sometimes the difference was 20-30Fps.. Should i sell my 16gb ddr4 ram to purchase 2x8 gb ddr4 ram or should I keep it.. I know that 2x8 gb ram will run in dual channel mode.. But i wasn't expecting differences to be 20-30 fps in gaming.. Your opinion

[bellabichon]

Dual channel is definitely a decent jump in performance over single channel, so it's something you should look into if you want to get the full performance out of the hardware you have. However, because you already have one 16gb stick, you could just upgrade. Would it be within your budget to buy another 16gb stick (preferably the same model as the one you already have, for compatibility purposes)? That way, you could get dual channel as well as 32gb of total RAM, and you wouldn't have to get rid of your old stuff.

[191x7]

21 minutes ago, Anjani said:

I have 1x16 gb ddr4 adata ram.. I have seen gaming benchmarks where it was shown that 2x8 gb ddr4 ram are much faster than single 16 gb stick.. Sometimes the difference was 20-30Fps.. Should i sell my 16gb ddr4 ram to purchase 2x8 gb ddr4 ram or should I keep it.. I know that 2x8 gb ram will run in dual channel mode.. But i wasn't expecting differences to be 20-30 fps in gaming.. Your opinion

We don't know the rest of your system. Maybe in your case the non-dualchannel isn't a bottleneck.

[Anjani]

2 hours ago, 191x7 said:

We don't know the rest of your system. Maybe in your case the non-dualchannel isn't a bottleneck.

So, dual channel should be installed in dimma2 and b2.. That is 2 and 4 th slot. I have to enable to xmp for both of them? How do i know that both of them are running at 3200 mhz.. Because sometimes even after enabling xmp. Cpuz shows dram frequency as 666mhz not 1600mhz.. How to know that both of them are running at dual channel and 1600mhz

 

Motherboard is b560m bazooka.. Cpu is i7 11700F

[mariushm]

Add a second stick... could be even a 4 GB stick, but you should go for either 8 GB or 16 GB for a 2nd stick.

 

The system should support hybrid dual channel meaning the common quantity will run in dual channel mode, and the rest will run in single channel mode.  So, if you install a 8 GB stick,  you will have 8 + 8 GB running in dual channel, and the remaining 8 GB from the 16 GB stick will be used in single channel.

Any application or game storing the data in those 8+8 GB will run faster.

 

You enable XMP for all sticks or none, it's not individual. 

The sticks run at half the advertised frequency ... if the sticks say 3200 Mhz, they actually run at 1600 Mhz  (2 x 1600 = 3200) ... They're DDRAM where DD means double data rate, on every Hz there's two bits of information sent ... so when they made DDR1 they wanted to make them look more attractive than SDRAM which send only one bit with every Hz and simply advertised them as double the real frequency.

 

SOME chipsets and/or SOME processors may artificially limit the maximum frequency of ram to some amount. It's not the case with your chipset or cpu so not gonna discuss it and confuse you more.

[Anjani]

2 minutes ago, mariushm said:

Add a second stick... could be even a 4 GB stick, but you should go for either 8 GB or 16 GB for a 2nd stick.

 

The system should support hybrid dual channel meaning the common quantity will run in dual channel mode, and the rest will run in single channel mode.  So, if you install a 8 GB stick,  you will have 8 + 8 GB running in dual channel, and the remaining 8 GB from the 16 GB stick will be used in single channel.

Any application or game storing the data in those 8+8 GB will run faster.

 

You enable XMP for all sticks or none, it's not individual. 

The sticks run at half the advertised frequency ... if the sticks say 3200 Mhz, they actually run at 1600 Mhz  (2 x 1600 = 3200) ... They're DDRAM where DD means double data rate, on every Hz there's two bits of information sent ... so when they made DDR1 they wanted to make them look more attractive than SDRAM which send only one bit with every Hz and simply advertised them as double the real frequency.

 

SOME chipsets and/or SOME processors may artificially limit the maximum frequency of ram to some amount. It's not the case with your chipset or cpu so not gonna discuss it and confuse you more.

So I have adata Gammix d30 16gb ddr4 ram and I will install corsair vengeance lpx 8gb 3200mhz ram ddr4 ram. I have seen that their cas timings are same.. So they both will run in dual channel till 16gb or timings are going to mismatched 

[mariushm]

Your bios will pick the more conservative timings supported by both sticks ... ex if one runs at 16-18-18-18 and the other at 18-20-20-20  both sticks will run at 18-20-20-20

It's not a big deal, just that you'll know one of the sticks will not run at the "absolutely maximum performance it can possibly do" ... in real world, you're unlikely to notice the performance difference between timings.

If timings are the same then fine, those timings will be used and will work just gine.

 

The BIOS may reset the default frequency to 2133/2400/2666 ... you should be able to go and set it back to 3200 Mhz without any problems.

[Anjani]

Adata xpg gammix d30 8gb 3200mhz has timings of 18-20-20-20 i dont think so.. Will they run in dual channel.. Also the bios will reset it 2666mhz.. I have to just enable xmp or I have to set it manually in bios 

[mariushm]

The numbers I wrote are bogus examples ... I don't actually know the timings of those memory sticks and it doesn't matter.

I also don't know how a bios will behave. A lot of BIOSes will detect something has changed about the memory and go with some default safe values like 2400 Mhz or 2666 Mhz and then you can go and manually increase the frequency back to 3200 Mhz.

 

[Anjani]

1 minute ago, mariushm said:

The numbers I wrote are bogus examples ... I don't actually know the timings of those memory sticks and it doesn't matter.

I also don't know how a bios will behave. A lot of BIOSes will detect something has changed about the memory and go with some default safe values like 2400 Mhz or 2666 Mhz and then you can go and manually increase the frequency back to 3200 Mhz.

 

OK if they run in dual channel till 16 gb 

. I don't have much problem. Regarding set to 3200 mhz.. I was asking just I have to enable xmp or manually setting it to get 3200mhz..also how can I know that they are running in hybrid dual channel mode..