is it fine to use 2 8gb ddr3 sticks at 1866 mhz and 2 4gb sticks at 1600mhz together?

[aren332]

I just achieved 2 8gb ddr3 sticks at 1866 mhz which I plan to replace my old 4x4 1600mhz config, will there be any cons to using the 2 4gb sticks with the new 2 8gb sticks @ 1866 mhz?

My cpu is a 4790k and my motherboard is an asus z97-c

[Hinjima]

Just now, aren332 said:

I just achieved 2 8gb ddr3 sticks at 1866 mhz which I plan to replace my old 4x4 1600mhz config, will there be any cons to using the 2 4gb sticks with the new 2 8gb sticks @ 1866 mhz?

My cpu is a 4790k and my motherboard is an asus z97-c

The memory will run at the speed of the slowest memory stick in the system.

[Aaron_T]

Just now, aren332 said:

I just achieved 2 8gb ddr3 sticks at 1866 mhz which I plan to replace my old 4x4 1600mhz config, will there be any cons to using the 2 4gb sticks with the new 2 8gb sticks @ 1866 mhz?

My cpu is a 4790k and my motherboard is an asus z97-c

The sticks will likely work together fine, however, all 4 sticks will run at the speed of the slowest kit, IE 1600mhz

[Somerandomtechyboi]

Send pic of all 4 sticks to identify ic

8gb is dual rank

4gb can be single rank or dual rank, you can tell by looking cause single rank is single sided and dual rank is double sided

 

You can end up with the same ic on both the 8gb and 4gb sticks so compatibility and 1866mhz is guaranteed even in a cursed 8x2 + 4x2 tri rank config

 

But 1866 is really slow, should be shooting for ~2800 but 2400 will also do if you are stuck with crappy samsung 4gbit ics

[Aaron_T]

1 minute ago, Somerandomtechyboi said:

Send pic of all 4 sticks to identify ic

8gb is dual rank

4gb can be single rank or dual rank, you can tell by looking cause single rank is single sided and dual rank is double sided

 

You can end up with the same ic on both the 8gb and 4gb sticks so compatibility and 1866mhz is guaranteed even in a cursed 8x2 + 4x2 tri rank config

 

But 1866 is really slow, should be shooting for ~2800 but 2400 will also do if you are stuck with crappy samsung 4gbit ics

I suspect you missed that OP has DDR3.

[Middcore]

2 minutes ago, Aaron_T said:

I suspect you missed that OP has DDR3.

The poster you are replying to has OC'ing RAM for no good reason as their whole gimmick, basically. 

[Somerandomtechyboi]

5 minutes ago, Aaron_T said:

I suspect you missed that OP has DDR3.

nope

Haswell can do 3600+ ddr3 but thats usually on hynix mfrs

 

1866 is already an oc speed for ddr3 albiet a very slow one hence i reccomend 2400-2800 cause you might aswell just keep the thing stock if you arent gonna bother getting the most out of the sticks, so yes just leaving it at 1600 is also a valid option cause you literally dont have to do anything, no stresstests no tuning no nothing, just set forget and go, you are only leaving abit of circumstancial performance gain on the table (relatively easy to get cause its ddr3 and ddr3 is easy to tune) but thats about it

 

Spoiler

Heres 3150 but ive hit 3184 already just havent bothered taking a pic cause its so close to ddr3 3200 and i have a new i7 920 i got off a bundle with an absolute garbage ex58 ud3r so once that breaks in and can finally tolerate 1.87v vtt should be able to hit 3200

 

ddr3 can hit xmp ddr4 speeds for whatever reason and with relative ease but ddr4 can only hit jedec ddr5 speeds (4800-5600) atleast on air and at those speeds its incredibly annoying to tune and stabilize and especially for the latter youll be running into boardlimits and imc limits alot of the time, so jedec ddr4 speeds are pretty easy to tune and stabilize (2400-3200) though 2800 and up may become abit more annoying to tune mainly due to boardlimit, 2400 will run on anything but the crappiest of ics, imcs, and boards

[aren332]

5 minutes ago, Somerandomtechyboi said:

nope

Haswell can do 3600+ ddr3 but thats usually on hynix mfrs

 

1866 is already an oc speed for ddr3 albiet a very slow one hence i reccomend 2400-2800 cause you might aswell just keep the thing stock if you arent gonna bother getting the most out of the sticks, so yes just leaving it at 1600 is also a valid option cause you literally dont have to do anything, no stresstests no tuning no nothing, just set forget and go, you are only leaving abit of circumstancial performance gain on the table (relatively easy to get cause its ddr3 and ddr3 is easy to tune) but thats about it

 

  Reveal hidden contents

Heres 3150 but ive hit 3184 already just havent bothered taking a pic cause its so close to ddr3 3200 and i have a new i7 920 i got off a bundle with an absolute garbage ex58 ud3r so once that breaks in and can finally tolerate 1.87v vtt should be able to hit 3200

 

ddr3 can hit xmp ddr4 speeds for whatever reason and with relative ease but ddr4 can only hit jedec ddr5 speeds (4800-5600) atleast on air and at those speeds its incredibly annoying to tune and stabilize and especially for the latter youll be running into boardlimits and imc limits alot of the time, so jedec ddr4 speeds are pretty easy to tune and stabilize (2400-3200) though 2800 and up may become abit more annoying to tune mainly due to boardlimit, 2400 will run on anything but the crappiest of ics, imcs, and boards

How should I go about overclocking the ram? just changing the ram profile from ddr3-1600mhz to like ddr3-2133mhz or something?? Should I change any other settings like timings and voltages? How should I change them

[aren332]

28 minutes ago, Somerandomtechyboi said:

Send pic of all 4 sticks to identify ic

8gb is dual rank

4gb can be single rank or dual rank, you can tell by looking cause single rank is single sided and dual rank is double sided

 

You can end up with the same ic on both the 8gb and 4gb sticks so compatibility and 1866mhz is guaranteed even in a cursed 8x2 + 4x2 tri rank config

 

But 1866 is really slow, should be shooting for ~2800 but 2400 will also do if you are stuck with crappy samsung 4gbit ics

the 8gb sticks are patriot viper sticks and the 4gb sticks are either from sk hynix or kingston (idk the model its a long ass name). Cant send pic cuz im not finna turn my pc off right now since I have files copying

[Somerandomtechyboi]

4 minutes ago, aren332 said:

How should I go about overclocking the ram? just changing the ram profile from ddr3-1600mhz to like ddr3-2133mhz or something?? Should I change any other settings like timings and voltages? How should I change them

ddr3 is quite easy to tune but ram oc is generally tedious so if you arent willing to spend a few hours id reccomend just leaving it at 1600/1866 depending on the ram ics on both kits

 

If you do wanna tune ddr3 ofc youll still need to identify ic cause blindly ocing is just uneccesary pain

 

3 minutes ago, aren332 said:

the 8gb sticks are patriot viper sticks and the 4gb sticks are either from sk hynix or kingston (idk the model its a long ass name). Cant send pic cuz im not finna turn my pc off right now since I have files copying

in that case you can just send a couple thaiphoon burner screenshots, one from an 8gb stick and another from a 4gb stick

 

Specific ic revision doesnt matter too much since were not pushing 3000+ and all the 4gbit hynixes and samsungs are pretty similar, just need the ic manufacturer and rank config for the 4gb sticks

 

As for freq target since this is a 4 stick cursed tri rank config probably 2200-2400, can push higher later just need those as a starting point if you wish to push higher