Question on new memory addition

[hccomptr]

I currently have 2-G.SKILL Ripjaws X Series 8GB DDR3 SDRAM DDR3 1600 (PC3 12800) DIMMs installed on my system (w/a ASRock Z77 Extreme6 ATX LGA1155 Motherboard). I intend to install 2 more DIMMs.

Is there any benefit at this point, on making the 2 new ones that I add, be a higher MHz (like maybe 2100MHz), or a different latency than what the 2 that I currently have are?
Would I be gaining anything by doing so?

 

[ajhockey3]

If you mix and match two different speeds of memory the higher one downclocks itself to the lower speed of the others. Garenteed to do that. Memory speed DOES NOT effect proformance what so ever unless your using on board GPU such as AMD Kaveri. If you would like I could send a video explaining that better with examples and benchmarks.

 

[hccomptr]

If you mix and match two different speeds of memory the higher one downclocks itself to the lower speed of the others. Garenteed to do that. Memory speed DOES NOT effect proformance what so ever unless your using on board GPU such as AMD Kaveri. If you would like I could send a video explaining that better with examples and benchmarks.

Would all DIMMs be able to be run in Dual-Channel mode, if 2 sticks of higher speed memory is mixed in with these original 2? Or, would the 2 new DIMMs have to be both the same speed, & the same size as the original 2?

 

[Tradesman1]

If the sticks even all play together, which is a crapshoot, they might, they might not, regardless all the DRAM in the rig will run at whatever you can set it to run at. The sticks will generally drop to the mobos default (not the speed of the slowest stick) and again, if they will play, what they run at is determined by you and how you set them up. I've run mixed DRAM many times faster than any of the sticks are rated for. Big thing will be if they will even play. If you try and have problems, give a shout and we can try voltage/timing adjustments

 

[hccomptr]

If the sticks even all play together, which is a crapshoot, they might, they might not, regardless all the DRAM in the rig will run at whatever you can set it to run at. The sticks will generally drop to the mobos default (not the speed of the slowest stick) and again, if they will play, what they run at is determined by you and how you set them up. I've run mixed DRAM many times faster than any of the sticks are rated for. Big thing will be if they will even play. If you try and have problems, give a shout and we can try voltage/timing adjustments

It would be a "crapshoot" even if the new memory would be the same brand, same series, same latency even, but just with the new memory being DDR3 2133 (PC3 17000) rather than the original, which is DDR3 1600 (PC3 12800)?

 

[Tradesman1]

ANY time you mix sticks from different packages - it's a crapshoot, there are no guarantees they will play. More on this in my FAQs and Fiction article, Fiction, Item 2, here:

http://www.tomshardware.co.uk/answers/id-2741495/ddr3-faqs-fiction.html