DDR3 Ram Overclocking issues and questions

[karoltrzask]

Hello,
at the beginning I want to thank you for understanding my English (I'm from Poland) and help. I'm a newbie overclocker and not everything is clear for me, so your help will be irreplaceable.
My build is: i5-4690k @4,5ghz & SPC Fortis 3 | Msi Z97 Gaming 3 | Palit 1070 Super JetStream @ 2063/4400mhz | 16GB (2x 8gb) Crucial Ballistix Sport 1600mhz CL9| CoolerMaster G550M | WD Blue 1TB & Samsung 840 series 128GB | Phanteks P400S Tempered Glass

I overclocked my ram about half a year ago and it stood at 2400mhz 10-12-12-31 CR2 1.76V but unfortunatelly yesterday my PC crashed while playing CS GO (I didn't play that game so that's the reason why it was that long from oc). I wanted to repair that problem and I started the whole process from the beginning - downloaded SuperPi 1.9, AIDA64, memtest and memtest86 7.5. In the last of that list I got errors even on default bios setting (even for a cpu) so I switched it to v4.3 - non-uefi ver. I'm still looking for good, real performance showing and recurrent benchmark concerned on games - suggestions welcome.

Today I did:
- Tests on default ram settings
- 1866mhz 10-10-10-27 cr2 1.55V and with VSA 0.9V, both VTT on 1.1V (that parameters weren't modified on previous oc - 2400mhz, it run without it).
- 2000mhz 10-10-10-27 CR2 1.6V
- 2133mhz 11-11-11-29 CR2 1.65V
- 2400mhz 10-12-12-31 CR2 1.7V a lot of bugs in memtest86 even high voltage (increased VTT to 1.15 and VSA to 0.92V)

I've listed only working settings (that means that I didn't get BSOD on booting or reset settings in bios), now I'm running 2133mhz 9-11-11-31 CR2 1.68V (real 1.668), memtest86 passed for about 35 minutes without any error. I want to get as much as it's possible from that memories.

I don't know what's are the rules in timings (I've heard only that the last parameter - ex. 31 should be +3 when every increases by 1) and setting voltages without a damage risk (last OC ended with 1.76V on DRAM and auto mode on VTT...). I will be very thankful with your help!

 

[saksham_1]

4th timing should be the sum of first three timing.
1st timing is the most important one,lower it is the faster is the response of the ram.
2nd timing has to be the same or more than 1st.
Complete guide-
https://www.techradar.com/news/computing-components/upgrades/how-to-overclock-your-ram-1030286
Bottom line-
Over clocking ram gives you a very very small amount of gain in performance.You should try it only if you use an onboard gpu.Otherwise it's not worth damaging the ram.

 

[karoltrzask]

4th timing should be the sum of first three timing.
1st timing is the most important one,lower it is the faster is the response of the ram.
2nd timing has to be the same or more than 1st.
Complete guide-
https://www.techradar.com/news/computing-components/upgrades/how-to-overclock-your-ram-1030286
Bottom line-
Over clocking ram gives you a very very small amount of gain in performance.You should try it only if you use an onboard gpu.Otherwise it's not worth damaging the ram.

Thank you for that guide, it's very detailed. I see a huge difference in browsing the internet on >20 tabs when ram is overclocked, that's important for me.