safe 24/7 voltage for patriot viper iii 2x8gb 1866 RAM?

[aren332]

I have a patriot viper iii 2x8gb 1866 kit which at stock is stable at 1866mhz, 10-11-10-30 timings @1.5v, i got it to 2133mhz with the same timings but 1.7v, is that safe? Should i push it further?

[podkall]

higher voltage is unsafe,

 

if the voltage is low on RAM it's fine, the only outcome of low voltage is potential instability/crash, higher voltage is much more dangerous for the RAM,

 

but I'm not the best one to ask the specific safe range

[RONOTHAN##]

16 minutes ago, aren332 said:

i got it to 2133mhz with the same timings but 1.7v, is that safe?

Yeah, 1.7V should be fine for most DDR3 ICs. Most are OK to 1.8V AFAIK as long as there's some cooling, though the difference would likely be CL9 instead of CL10, not likely to be a noticeable improvement. Work on the subtimings instead. 

[Somerandomtechyboi]

1 hour ago, aren332 said:

I have a patriot viper iii 2x8gb 1866 kit which at stock is stable at 1866mhz, 10-11-10-30 timings @1.5v, i got it to 2133mhz with the same timings but 1.7v, is that safe? Should i push it further?

send thaiphoon burner screenshot to identify ram ics

 

what cpu?

what mobo?

 

2133 is still really slow so needing 1.7v kinda suggests a shitty 4gbit samsung ic since hynix can do 3000+ with that kinda volt

 

as for voltage the cpu wont be affected by voltage so you can go as high as the mobo lets you and the cpu can give less of a shit so your max "safe" vdimm will be completely determined by the ram ics themselves just to clear up any nonsense misconceptions with idiots thinking the imc will die over 1.57v or 1.65v

 

54 minutes ago, RONOTHAN## said:

Most are OK to 1.8V AFAIK as long as there's some cooling

i havent played around with 4gbit ics (atleast any decent ones that arent shit samsung or micron) but usually id only need cooling when pushing above 2.2v or 2.4v but depends on the ics, my 1gbit gdies are fine running 2864c10 at 2.1v while being hammered with prime95 largeffts (i7 930 chip, vtt at 1.7v) and my shitty 4gbut d9qbj are fine at 1910c9 2v on my other x58 system (x5650, vtt 1.45v, not 2100/2200 due to shit p6x58de that isnt stable >200bclk) though micron loves high volt and the gdies are 1gbit and timings seem to scale decently with volt though sadly no volt scaling for trfc =(

 

usually degradation will happen when you run the ic past its diminishing returns like my hynix 2gbit cfr that degrades at only >2v and yes i saw heavy diminishing returns >2v since 3000 wasnt even stable at 2.5v, i have heard that this ic is good under cold so maybe theyre just trash at ambient only managing 2800c11 stable at 2.1v and not much more than that, doesnt help that x58 doesnt allow >c11 and no tcwl to loosen and afaik most 4gbit ics only scale to 1.8-2v with microns scaling above 2v but these are trash ics and same goes for samsung atleast on 4gbit density

 

i do wanna play around with 4gbit ics at some point, mainly hynixes as all their 4gbit ics can do >3000 and definitely want hynix mfr see if its any lighter on the imc than gdie as i can only manage 3300c10 (2.3v) max with 1 stick and vtt set to 1.8v on my i7 930

Spoiler

 

as for your ram oc 2133c10 is really slow and it doesnt help that you need 1.7v for it so once you provide details for your platform ill be able to lend some help

 

sandybridge is stuck to 21.33x multi so only way to go higher is via bclk where all cpus will do 105 but above that depends on luck and temps

 

ivy can do higher multi with 2800-3000 being about the max that you can do but i have not tested ivy, though i do have a g2030 and i have an unopened z68 that apparently has a random shutdown issue i wanna fix so i might post oc results if i get any ocs

 

haswell has a better imc than both bloomfield and gulftown (x58) capable of 3600+ so youll mainly see boardlimit or ramlimit imstead of being limited by imc

 

as for amd

llano (fm1) can do ~3200 on non k cpus and 3600+ on k cpus but i havent gotten my hands on one and trinity (fm2) seems to be stuck around 2600-3000

 

zambezi (am3+) seems to be able to do 3200+ since at one point it apparently held a ram freq record at like ~4000 ish on an fx8150 but i kinda forgot

 

vishera (am3+) seems to have a weaker imc, dunno about oc capabilities but id reckon somewhere around 3000 is probably the ceiling

 

 

if your platform is anything other than sandybridge and those rams are not hynix you resell those rams to some idiot thatll pay extra over 1066-1600 jedec bare pcbs since xmp rams are worth more whilst usually having shittier ics on the lower bins like 1866, even if its sandybridge id still reccomend reselling the rams anyway since youll make a profit whilst moving to faster rams

 

then you use that money and buy a couple hynix 8gb sticks prefferably hmt41gu6mfr8c hynix mfr thats capable of 3600+ on ambient but other hynix 4gbit ics like afr bfr and dfr should be ok aswell, youll make some extra cash and you get faster rams in the process, but if your aim isnt 3000+ and your board is decent with quad stick might wanna consider 4x4 quad rank with m378b5273dh0 (2gbit d die) or hmt351u6cfr8c (2gbit cfr) as these should do tighter subs especially trfc (100 or less compared to 300+ for 4gbit ics)

[aren332]

2 hours ago, Somerandomtechyboi said:

send thaiphoon burner screenshot to identify ram ics

 

what cpu?

what mobo?

 

2133 is still really slow so needing 1.7v kinda suggests a shitty 4gbit samsung ic since hynix can do 3000+ with that kinda volt

 

as for voltage the cpu wont be affected by voltage so you can go as high as the mobo lets you and the cpu can give less of a shit so your max "safe" vdimm will be completely determined by the ram ics themselves just to clear up any nonsense misconceptions with idiots thinking the imc will die over 1.57v or 1.65v

 

i havent played around with 4gbit ics (atleast any decent ones that arent shit samsung or micron) but usually id only need cooling when pushing above 2.2v or 2.4v but depends on the ics, my 1gbit gdies are fine running 2864c10 at 2.1v while being hammered with prime95 largeffts (i7 930 chip, vtt at 1.7v) and my shitty 4gbut d9qbj are fine at 1910c9 2v on my other x58 system (x5650, vtt 1.45v, not 2100/2200 due to shit p6x58de that isnt stable >200bclk) though micron loves high volt and the gdies are 1gbit and timings seem to scale decently with volt though sadly no volt scaling for trfc =(

 

usually degradation will happen when you run the ic past its diminishing returns like my hynix 2gbit cfr that degrades at only >2v and yes i saw heavy diminishing returns >2v since 3000 wasnt even stable at 2.5v, i have heard that this ic is good under cold so maybe theyre just trash at ambient only managing 2800c11 stable at 2.1v and not much more than that, doesnt help that x58 doesnt allow >c11 and no tcwl to loosen and afaik most 4gbit ics only scale to 1.8-2v with microns scaling above 2v but these are trash ics and same goes for samsung atleast on 4gbit density

 

i do wanna play around with 4gbit ics at some point, mainly hynixes as all their 4gbit ics can do >3000 and definitely want hynix mfr see if its any lighter on the imc than gdie as i can only manage 3300c10 (2.3v) max with 1 stick and vtt set to 1.8v on my i7 930

  Reveal hidden contents

 

as for your ram oc 2133c10 is really slow and it doesnt help that you need 1.7v for it so once you provide details for your platform ill be able to lend some help

 

sandybridge is stuck to 21.33x multi so only way to go higher is via bclk where all cpus will do 105 but above that depends on luck and temps

 

ivy can do higher multi with 2800-3000 being about the max that you can do but i have not tested ivy, though i do have a g2030 and i have an unopened z68 that apparently has a random shutdown issue i wanna fix so i might post oc results if i get any ocs

 

haswell has a better imc than both bloomfield and gulftown (x58) capable of 3600+ so youll mainly see boardlimit or ramlimit imstead of being limited by imc

 

as for amd

llano (fm1) can do ~3200 on non k cpus and 3600+ on k cpus but i havent gotten my hands on one and trinity (fm2) seems to be stuck around 2600-3000

 

zambezi (am3+) seems to be able to do 3200+ since at one point it apparently held a ram freq record at like ~4000 ish on an fx8150 but i kinda forgot

 

vishera (am3+) seems to have a weaker imc, dunno about oc capabilities but id reckon somewhere around 3000 is probably the ceiling

 

 

if your platform is anything other than sandybridge and those rams are not hynix you resell those rams to some idiot thatll pay extra over 1066-1600 jedec bare pcbs since xmp rams are worth more whilst usually having shittier ics on the lower bins like 1866, even if its sandybridge id still reccomend reselling the rams anyway since youll make a profit whilst moving to faster rams

 

then you use that money and buy a couple hynix 8gb sticks prefferably hmt41gu6mfr8c hynix mfr thats capable of 3600+ on ambient but other hynix 4gbit ics like afr bfr and dfr should be ok aswell, youll make some extra cash and you get faster rams in the process, but if your aim isnt 3000+ and your board is decent with quad stick might wanna consider 4x4 quad rank with m378b5273dh0 (2gbit d die) or hmt351u6cfr8c (2gbit cfr) as these should do tighter subs especially trfc (100 or less compared to 300+ for 4gbit ics)

a lot of information, I have a 4790k @4.8ghz @1.3v, asus z97-c, the ram is simply unstable at higher speeds, even 2400mhz, when i cranked up the timings to like 20-20-20-60 and 1.7v

 

 

the ram sticks do not get hot at all (almost when touched), and i have some random 4gb ddr3 sticks lying around, a few from hynix

 

here is what thaiphoon burner says:

 

 

 

 

 

 

 

 

here is the pics of the random ddr3 sticks i have lying around, each is 4gb

 

[WereCat]

I've ran my Patriot Vipers at 1.75V for daily back when I had 4770k. I believe that's safe for DDR3

[Somerandomtechyboi]

37 minutes ago, aren332 said:

a lot of information, I have a 4790k @4.8ghz @1.3v, asus z97-c, the ram is simply unstable at higher speeds, even 2400mhz, when i cranked up the timings to like 20-20-20-60 and 1.7v

 

 

the ram sticks do not get hot at all (almost when touched), and i have some random 4gb ddr3 sticks lying around, a few from hynix

 

here is what thaiphoon burner says:

 

 

 

 

 

 

 

 

 

here is the pics of the random ddr3 sticks i have lying around, each is 4gb

 

 

the pcb is apparently designed by hynix??? but the absolute rubbish clocking capability at that volt suggests samsung 4gbit

 

use the 2 topmost sticks in the photo as a reference as they are hynix 4gbit afr which should be capable of 3000+ c12 at ~1.65v

 

id just copy paste the vccsa/io volts from this vid

vccsa = 1.312v

digital i/o = 1.248v

analog i/o = 1.256v

 

start at ddr3 2800 primaries set to 12-15-15 everything else auto, copy said vccsa/io volts, vdimm set to either 1.6 or 1.7v, then work your way up in 200mhz increments, push as much vdimm as neccesary so dont hesitate to give extra vdimm especially since we are working with low voltage (<2v), and you can further reduce vdimm requirement by loosening tcwl which can be 1 or 2 below cl, so 3000 12-16-16 or 3200 12-17-17

 

 

since that board has pci slots id reccomend buying a pci debug card usually marketed as pc analyzer, helps alot for both troubleshooting and oc since you can see where in the boot process the mobo errored, dont have much experience ocing with uefi boards but afaik code 55 and 4f seem to be pretty common error codes that are ram oc related, basically saves a ton of time being able to immideatly see and reset the board alongside being able to see wether you are not setting vdimm imc volts or maybe just outright running into hardware limit

Spoiler

this is what they look like and usually sell for ~3$

 

 

as for the mobo id also buy a ch341a (2-3$) and flash bios to the z97-a or z97 deluxe since with my p5q asus bios crippled it and flashing it to a p5qd turbo increased the fsb oc capability from 530 -> 570 in bios so i have my suspicions that their lowend is still gonna be bios crippled probably both voltage and oc capability, also means that you wont have to fear bios corruption since you can reflash externally with ease, bios chip is socketed on asus z97 located on the bottom right below the chipset heatsink

[aren332]

On 3/18/2024 at 12:02 AM, Somerandomtechyboi said:

the pcb is apparently designed by hynix??? but the absolute rubbish clocking capability at that volt suggests samsung 4gbit

 

use the 2 topmost sticks in the photo as a reference as they are hynix 4gbit afr which should be capable of 3000+ c12 at ~1.65v

 

id just copy paste the vccsa/io volts from this vid

vccsa = 1.312v

digital i/o = 1.248v

analog i/o = 1.256v

 

start at ddr3 2800 primaries set to 12-15-15 everything else auto, copy said vccsa/io volts, vdimm set to either 1.6 or 1.7v, then work your way up in 200mhz increments, push as much vdimm as neccesary so dont hesitate to give extra vdimm especially since we are working with low voltage (<2v), and you can further reduce vdimm requirement by loosening tcwl which can be 1 or 2 below cl, so 3000 12-16-16 or 3200 12-17-17

 

 

since that board has pci slots id reccomend buying a pci debug card usually marketed as pc analyzer, helps alot for both troubleshooting and oc since you can see where in the boot process the mobo errored, dont have much experience ocing with uefi boards but afaik code 55 and 4f seem to be pretty common error codes that are ram oc related, basically saves a ton of time being able to immideatly see and reset the board alongside being able to see wether you are not setting vdimm imc volts or maybe just outright running into hardware limit

  Reveal hidden contents

this is what they look like and usually sell for ~3$

 

 

as for the mobo id also buy a ch341a (2-3$) and flash bios to the z97-a or z97 deluxe since with my p5q asus bios crippled it and flashing it to a p5qd turbo increased the fsb oc capability from 530 -> 570 in bios so i have my suspicions that their lowend is still gonna be bios crippled probably both voltage and oc capability, also means that you wont have to fear bios corruption since you can reflash externally with ease, bios chip is socketed on asus z97 located on the bottom right below the chipset heatsink

yeah it dont want to boot anything above 2200mhz, went to 2400mhz, 15-15-15-40 timings, 1.7v dram, +0.15v on the system agent, and io, still wouldnt boot

[Somerandomtechyboi]

49 minutes ago, aren332 said:

yeah it dont want to boot anything above 2200mhz, went to 2400mhz, 15-15-15-40 timings, 1.7v dram, +0.15v on the system agent, and io, still wouldnt boot

on those top 2 blue hynix sticks?

 

in that case i think ill have to buy haswell for myself just to see how it behaves since theres a cheap z97 + g3258 combo, afaik 3600+ should be within the capabilities of haswell imc

 

i have some 2gbit hynix cfr, even if theyre meh ics they should do ok as a reference, might aswell test my gdie sticks max freq cause im still gonna have to bin more bloomfield cpus for 3400+ on x58, seems like >1.86v vtt does degrade these bloomfield chips but not too sure just yet since ive never seen any degradation in the 1.7-1.86v vtt range with my i7 930 (vtt at 1.94-1.98v for my best w3503, yes this is on air) so that doesnt help =l, also the voltage range for anything post 775/1366 is just pathetic, at best only 2.2v vdimm on higher end boards

 

 

also you can try skipping 2400 and going straight for 2666 or 2800 cause maybe its a multiplier hole and that multi just really doesnt wanna work, you can also use bclk strap which should be able to do 200+ bclk and only overclock the cpu and rams

 

if it just refuses to go past 2200 just leave it at that and maybe run a 4 stick config while you are at it just for that extra ram capacity and cursed tri rank

[Dedayog]

On 3/17/2024 at 11:25 PM, aren332 said:

a lot of information, I have a 4790k @4.8ghz @1.3v, asus z97-c, the ram is simply unstable at higher speeds, even 2400mhz, when i cranked up the timings to like 20-20-20-60 and 1.7v

 

 

the ram sticks do not get hot at all (almost when touched), and i have some random 4gb ddr3 sticks lying around, a few from hynix

 

here is what thaiphoon burner says:

 

 

 

 

 

 

 

 

 

here is the pics of the random ddr3 sticks i have lying around, each is 4gb

 

You doing this to get performance or shits and giggles?

 

Cuz you'll get one, at least.

 

Good learning experience tho .

[aren332]

13 hours ago, Somerandomtechyboi said:

on those top 2 blue hynix sticks?

 

in that case i think ill have to buy haswell for myself just to see how it behaves since theres a cheap z97 + g3258 combo, afaik 3600+ should be within the capabilities of haswell imc

 

i have some 2gbit hynix cfr, even if theyre meh ics they should do ok as a reference, might aswell test my gdie sticks max freq cause im still gonna have to bin more bloomfield cpus for 3400+ on x58, seems like >1.86v vtt does degrade these bloomfield chips but not too sure just yet since ive never seen any degradation in the 1.7-1.86v vtt range with my i7 930 (vtt at 1.94-1.98v for my best w3503, yes this is on air) so that doesnt help =l, also the voltage range for anything post 775/1366 is just pathetic, at best only 2.2v vdimm on higher end boards

 

 

also you can try skipping 2400 and going straight for 2666 or 2800 cause maybe its a multiplier hole and that multi just really doesnt wanna work, you can also use bclk strap which should be able to do 200+ bclk and only overclock the cpu and rams

 

if it just refuses to go past 2200 just leave it at that and maybe run a 4 stick config while you are at it just for that extra ram capacity and cursed tri rank

i havent tried just using those 2 blue hynix sticks since they make up a total of 8gb which isnt enough for me, im running currently 24gb, those 2 sticks plus the 2 patriot viper sticks at 1.65v @2133mhz wit 11-11-11-30 timings, but i still cant get anything above 2200, 2400mhz it finally boots into bios (with the timings high asf, all 4 voltages (system agent, dram, io) also high asf), but bsod as soon as it loads windows with the kernel error. before it didnt even want to go in to bios the pc js shut off and i had to reset cmos