amd fx 6300 supports ram upto 1866mhz ram...

[NEO**B]

processors like amd fx6300 supports 1866 mhz rams . if i use 2400mhz ram . will there be any performance increse or it will be running as a1866 mhz stick ?

[pwn_intended]

The only time RAM speed makes ANY DIFFERENCE AT ALL is if you are using the onboard graphics instead of a dedicated GPU.

[Guest]

That depends, 1866 is the max stable, but if you were lucky, 2400 MHz would work,

But you really don't see a difference in 1600+ RAM

[ShadowCaptain]

processors like amd fx6300 supports 1866 mhz rams . if i use 2400mhz ram . will there be any performance increse or it will be running as a1866 mhz stick ?

 

If the board and CPU only support 1866, then the ram will run at 1866

 

if anything it will have worse timings than a set of 1866 ram

[guitarboy012001]

i'm pretty sure your stuck but like stated above once past 1866mhz it doesn't really make a difference

[Nena Trinity]

Why not just get 1866MHz with CL9? Then its faster than DDR4!

[NEO**B]

Why not just get 1866MHz with CL9? Then its faster than DDR4!

can u suggest some of those cl9 1866s ?

[Nena Trinity]

can u suggest some of those cl9 1866s ?

HyperX Savage DDR3 1866MHz CL9 4GB Red (x2)

[NEO**B]

 

HyperX Savage DDR3 1866MHz CL9 4GB Red (x2)

cl10 vs cl9 ? how much performance increase ?

[Nena Trinity]

cl10 vs cl9 ? how much performance increase ?

barely anything but CL9 is the better one.

[NEO**B]

barely anything but CL9 is the better one.

thank u

[NEO**B]

thanks to all

[Nena Trinity]

thank u

No problem!

[Prysin]

processors like amd fx6300 supports 1866 mhz rams . if i use 2400mhz ram . will there be any performance increse or it will be running as a1866 mhz stick ?

No it doesnt.

ALL FX chips memory controller only support 1333 MHz RAM.

ANY SPEED above that is purely supported or helped being achieved by the motherboard. FX memory controller is fucking atrocious.

 

my 8320 could handle 4x4GB 1866MHz RAM, occasionally, but i had to increase the northbridge voltage one step to keep it stable at XMP1 (1866MHz). Unfortunatly, every so often, it would throw a tantrum when i was adjusting my OC, which was stable, just the memory controller was a bitch..... But once i bought a 32GB kit, also from Kingston, also 1866MHz, it wouldnt run 1 of the sticks... I had to manually increase the northbridge voltage one or two steps and reduce the speed to 1600 to even make my chips work. Bare in mind, i were using a 990FX Sabertooth R2.0 motherboard, like the second best 990FX board you can buy. Most of you wont ever buy that board as it costs a whopping 175 USD.

 

After extensive research, i found that officially, AMDs own memory controller, embedded in the chip, only supports 1333MHz. Is known to have failures, is known to be absolute horseshit, and is known to struggle with anything over 1600, even with manual adjustments.

[MageTank]

No it doesnt.

ALL FX chips memory controller only support 1333 MHz RAM.

ANY SPEED above that is purely supported or helped being achieved by the motherboard. FX memory controller is fucking atrocious.

 

my 8320 could handle 4x4GB 1866MHz RAM, occasionally, but i had to increase the northbridge voltage one step to keep it stable at XMP1 (1866MHz). Unfortunatly, every so often, it would throw a tantrum when i was adjusting my OC, which was stable, just the memory controller was a bitch..... But once i bought a 32GB kit, also from Kingston, also 1866MHz, it wouldnt run 1 of the sticks... I had to manually increase the northbridge voltage one or two steps and reduce the speed to 1600 to even make my chips work. Bare in mind, i were using a 990FX Sabertooth R2.0 motherboard, like the second best 990FX board you can buy. Most of you wont ever buy that board as it costs a whopping 175 USD.

 

After extensive research, i found that officially, AMDs own memory controller, embedded in the chip, only supports 1333MHz. Is known to have failures, is known to be absolute horseshit, and is known to struggle with anything over 1600, even with manual adjustments.

Sorry, but this is a load of bull. Out of the box, not touching anything, the FX IMC is fully capable of driving 1866mhz. It is AMD's official limitation for the CPU. Certain boards will even allow you to go higher without any issues at all. I have personally ran 16gb of 2133mhz CL10 memory on my FX 8320, it just takes fine tuning and luck.

 

Your best bet is to find a board that supports D.C.O.P and find a good memory kit. The best memory for the job back in the day was a generic Samsung kit. Model Number was M379B5273DH0-YK0 This kit was 1600 CL11 at stock, 1.35V. However, if you pump 1.55V into it, you could take it to 2133mhz CL10 and have absolutely no problem doing so. Sadly, this kit is no longer sold, from what i could find. I did manage to find an old review of it: http://www.overclockersclub.com/reviews/samsung_green_ddr3l/

 

If you want proof of my memory settings, i can go swap out my board back to my FX 8320 and give you a CPU-Z screenshot. Off the top of my head, i believe my memory ran at 2133mhz CL10-12-12. Max i was ever able to take the memory to was 2250mhz, but one of the sticks is weaker than the other 3, and was not able to go any further. Plenty of people on OCN went way beyond that too.

 

 

I forgot where i was going with this, so ill just reiterate my original point. The CPU's themselves can handle 1866 without fancy board support. It is a limitation based on the way the channel works. AMD has a PDF of this information somewhere, i just can't find it. 

[Prysin]

Sorry, but this is a load of bull. Out of the box, not touching anything, the FX IMC is fully capable of driving 1866mhz. It is AMD's official limitation for the CPU. Certain boards will even allow you to go higher without any issues at all. I have personally ran 16gb of 2133mhz CL10 memory on my FX 8320, it just takes fine tuning and luck.

 

Your best bet is to find a board that supports D.C.O.P and find a good memory kit. The best memory for the job back in the day was a generic Samsung kit. Model Number was M379B5273DH0-YK0 This kit was 1600 CL11 at stock, 1.35V. However, if you pump 1.55V into it, you could take it to 2133mhz CL10 and have absolutely no problem doing so. Sadly, this kit is no longer sold, from what i could find. I did manage to find an old review of it: http://www.overclockersclub.com/reviews/samsung_green_ddr3l/

 

If you want proof of my memory settings, i can go swap out my board back to my FX 8320 and give you a CPU-Z screenshot. Off the top of my head, i believe my memory ran at 2133mhz CL10-12-12. Max i was ever able to take the memory to was 2250mhz, but one of the sticks is weaker than the other 3, and was not able to go any further. Plenty of people on OCN went way beyond that too.

 

 

I forgot where i was going with this, so ill just reiterate my original point. The CPU's themselves can handle 1866 without fancy board support. It is a limitation based on the way the channel works. AMD has a PDF of this information somewhere, i just can't find it. 

Again, you are talking of MANUAL ADJUSTMENTS.

I am talking of AUTOMATICAL SETTINGS.

 

Ive had my issues, maybe my chip had a especially bad IMC. Either way, doesnt change the fact that FX IMC itself isnt meant to handle more then 1333MHz.

 

And yes, i think i know of the PDF you mentioned, i spent like a whole week troubbleshooting why my fucking RAM werent working properly with my FX before i got pissed off (it was the final drop one can say, i had other issues with it), and bought a i7 4790k. In which i can assure you that the same RAM sticks works just as they should, with no hassle.

 

Comparing manual adjustments to plug-and-play is not a real comparison, as you can change the settings to work around the wonky IMC. The JDEC profiles being used by the standard BIOS loader, does not adjust any settings. It picks a JDEC setting that it finds out that works, and if that is lower then the rated RAM speed, then it wont care.

[MageTank]

Again, you are talking of MANUAL ADJUSTMENTS.

I am talking of AUTOMATICAL SETTINGS.

 

Ive had my issues, maybe my chip had a especially bad IMC. Either way, doesnt change the fact that FX IMC itself isnt meant to handle more then 1333MHz.

 

And yes, i think i know of the PDF you mentioned, i spent like a whole week troubbleshooting why my fucking RAM werent working properly with my FX before i got pissed off (it was the final drop one can say, i had other issues with it), and bought a i7 4790k. In which i can assure you that the same RAM sticks works just as they should, with no hassle.

 

Comparing manual adjustments to plug-and-play is not a real comparison, as you can change the settings to work around the wonky IMC. The JDEC profiles being used by the standard BIOS loader, does not adjust any settings. It picks a JDEC setting that it finds out that works, and if that is lower then the rated RAM speed, then it wont care.

But with that logic, that means Intel cant support more than DDR3 1333mhz, because thats the default speed that memory lowers to on Haswell. No matter what kit you get, if it goes beyond 1333mhz (JEDEC standard) you have to either use an XMP profile, D.C.O.P profile, or manually OC it. They do have D.O.C.P kits you can get that will load beyond 1333mhz just fine on AMD CPU's, but everything defaults to 1333mhz. My current G Skill get on my G3258 defaults to 1333mhz CL9, even though its 2133mhz CL10 memory. 

 

I will agree that the IMC on Vishera based FX CPU's is picky, and automatic OCing done by the BIOS on memory kits tend to cause it to go nuts. Dialing timings and speeds in manually, and tinkering from there is pretty much the only way you will ever get past 1866mhz stable. 

 

If you know of any memory kit that works plug & play at its advertised speed, i would love to see that.

[Prysin]

But with that logic, that means Intel cant support more than DDR3 1333mhz, because thats the default speed that memory lowers to on Haswell. No matter what kit you get, if it goes beyond 1333mhz (JEDEC standard) you have to either use an XMP profile, D.C.O.P profile, or manually OC it. They do have D.O.C.P kits you can get that will load beyond 1333mhz just fine on AMD CPU's, but everything defaults to 1333mhz. My current G Skill get on my G3258 defaults to 1333mhz CL9, even though its 2133mhz CL10 memory. 

 

I will agree that the IMC on Vishera based FX CPU's is picky, and automatic OCing done by the BIOS on memory kits tend to cause it to go nuts. Dialing timings and speeds in manually, and tinkering from there is pretty much the only way you will ever get past 1866mhz stable. 

 

If you know of any memory kit that works plug & play at its advertised speed, i would love to see that.

Well, my FX always defaulted to 1600MHz, only a few times did it ever default to 1866...

My i7 4790k did the same, it defaulted to 1600MHz (same kit as before), XMP brought it up to 1866MHz no problem. Why others haswell processors defaults to 1333, i dunno.

[Nena Trinity]

No it doesnt.

ALL FX chips memory controller only support 1333 MHz RAM.

ANY SPEED above that is purely supported or helped being achieved by the motherboard. FX memory controller is fucking atrocious.

 

my 8320 could handle 4x4GB 1866MHz RAM, occasionally, but i had to increase the northbridge voltage one step to keep it stable at XMP1 (1866MHz). Unfortunatly, every so often, it would throw a tantrum when i was adjusting my OC, which was stable, just the memory controller was a bitch..... But once i bought a 32GB kit, also from Kingston, also 1866MHz, it wouldnt run 1 of the sticks... I had to manually increase the northbridge voltage one or two steps and reduce the speed to 1600 to even make my chips work. Bare in mind, i were using a 990FX Sabertooth R2.0 motherboard, like the second best 990FX board you can buy. Most of you wont ever buy that board as it costs a whopping 175 USD.

 

After extensive research, i found that officially, AMDs own memory controller, embedded in the chip, only supports 1333MHz. Is known to have failures, is known to be absolute horseshit, and is known to struggle with anything over 1600, even with manual adjustments.

I personally think it was your board mine ran fine at 1866MHz after I plugged it in...

[FLUFFYJELLO]

But with that logic, that means Intel cant support more than DDR3 1333mhz, because thats the default speed that memory lowers to on Haswell.

 

Uhm...nope? DDR3 1600MHz defaults to DDR3 1600MHz on my system, plug and play. I don't have to adjust anything except timings; which is well documented as being off with G.Skill kits out of the box (listed at 9, 9, 9, 24; but defaults to 10, 10, 10, 28).

Did the same on my 4690K, the G3258, the E3 1231v3; all of these defaulted to 1600Mhz.

[MageTank]

Uhm...nope? DDR3 1600MHz defaults to DDR3 1600MHz on my system, plug and play. I don't have to adjust anything except timings; which is well documented as being off with G.Skill kits out of the box (listed at 9, 9, 9, 24; but defaults to 10, 10, 10, 28).

It may be board dependent. I just went back and tested my G Skill 2133mhz CL9 kit on my PC (Asrock Z97m-ITX/AC) and it defaulted to 1333mhz CL9. I tested it on my brothers Asrock Fata1ity Z97 Killer and it defaulted to 1600mhz CL9. Both still required XMP settings to be loaded in order to run at the memory's rated speed, but they did not default to the same speed. If it is any correlation, he has the i5 4690k which also has a stronger IMC than the G3258, so that may explain things.

 

Either way, just plugging in a memory kit without touching it is not the best way to get the most performance out of it. Manually dialing in timings, or manually loading XMP/D.O.C.P. 

[FLUFFYJELLO]

It may be board dependent. I just went back and tested my G Skill 2133mhz CL9 kit on my PC (Asrock Z97m-ITX/AC) and it defaulted to 1333mhz CL9. I tested it on my brothers Asrock Fata1ity Z97 Killer and it defaulted to 1600mhz CL9. Both still required XMP settings to be loaded in order to run at the memory's rated speed, but they did not default to the same speed. If it is any correlation, he has the i5 4690k which also has a stronger IMC than the G3258, so that may explain things.

 

Either way, just plugging in a memory kit without touching it is not the best way to get the most performance out of it. Manually dialing in timings, or manually loading XMP/D.O.C.P. 

 

And I agree completely, because manual adjustment is key for anything to work perfectly IMO. I do find that odd, though you might be right and it could depend on motherboards. The 4 Z97 boards I've used so far (Gigabyte Z97MX-Gaming 5, Gigabyte Z97X-SOC, MSI Z97I-AC, Asus Z97M) default to 1600MHz using any one of the processors I listed.

[MageTank]

And I agree completely, because manual adjustment is key for anything to work perfectly IMO. I do find that odd, though you might be right and it could depend on motherboards. The 4 Z97 boards I've used so far (Gigabyte Z97MX-Gaming 5, Gigabyte Z97X-SOC, MSI Z97I-AC, Asus Z97M) default to 1600MHz using any one of the processors I listed.

Could also be the fact that the ITX board i have is not exactly made for overclocking. Even though it is a Z97 board, it lacks a VRM heatsink and even lacks LLC and Vrin adjustment options. The proper OCing ITX version is the Z97E-ITX/AC, not the M version. I will do another test later on an Asrock Pro 4 i have lying around, and see where that takes me.

[KarateHottie93]

Get some cas9 1866 Vengeance Pro.

[FLUFFYJELLO]

Could also be the fact that the ITX board i have is not exactly made for overclocking. Even though it is a Z97 board, it lacks a VRM heatsink and even lacks LLC and Vrin adjustment options. The proper OCing ITX version is the Z97E-ITX/AC, not the M version. I will do another test later on an Asrock Pro 4 i have lying around, and see where that takes me.

 

Quite possibly, you're most likely right when it comes to motherboard dependency and default RAM clock; I mean, it wouldn't surprise me. And CPU can always be a factor, too. I know that I can push my 4690K to 4.5GHz 24/7 and a performance clock of 4.7GHz on my Z97X-SOC; but now that it's on the MSI ITX board I can only get it 24/7 stable at 4.2GHz (that's partially because it's under an NH-L9i cooler now, too). Motherboards may not directly impact performance, but they certainly impact how your system can perform as a whole once memory timings/speeds and overclocking come into play.