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  Topic Review (Newest First)
05-30-2020 05:38 AM
TwilightRavens
Quote: Originally Posted by Groove2013 View Post
Actually not true, since ASRock Z97 OC Formula is the best one for RAM OC, because of tracers arangement and 4, not 2 RAM VRM + a many PCB layers.

https://www.aliexpress.com/item/4000805404491.html
But that’s not ITX
05-29-2020 03:27 PM
BroadPwns
Quote: Originally Posted by TwilightRavens View Post
Not ordering it for the VRM, ordering it for the form factor and hopes of achieving high ram clocks because ASUS itx boards are best for RAM overclocks as much as i hate to say it and considering my hatred for ASUS.

Yeah, I responded to the VRM list Groove linked.
05-29-2020 02:58 PM
Groove2013
Quote: Originally Posted by TwilightRavens View Post
hopes of achieving high ram clocks because ASUS itx boards are best for RAM overclocks
Actually not true, since ASRock Z97 OC Formula is the best one for RAM OC, because of tracers arangement and 4, not 2 RAM VRM + a many PCB layers.

https://www.aliexpress.com/item/4000805404491.html
05-29-2020 02:32 PM
TwilightRavens
Intel Broadwell-C (5675C/5775C) Ownership Club

Quote: Originally Posted by BroadPwns View Post
Tbh, VRM is literally on the bottom of the importance list for 5775c.

Not ordering it for the VRM, ordering it for the form factor and hopes of achieving high ram clocks because ASUS itx boards are best for RAM overclocks as much as i hate to say it and considering my hatred for ASUS.
05-29-2020 06:41 AM
BroadPwns Tbh, VRM is literally on the bottom of the importance list for 5775c.
05-29-2020 06:03 AM
Groove2013
Quote: Originally Posted by TwilightRavens View Post
Hoping to snag a Maximus VII itx board in the future to throw the 5775C in for a portable gaming pc.
$150 Maximus VII Impact
https://www.aliexpress.com/item/32946592854.html

$176 Maximus VII Gene
https://www.aliexpress.com/item/4000978030035.html

VRM list:
05-28-2020 01:12 PM
TwilightRavens
Intel Broadwell-C (5675C/5775C) Ownership Club

Quote: Originally Posted by TrantaLocked View Post
Why would more sticks help rather than hurt? Did you need to increase IO Analog and Input because I was only touching Digital, never touched IO Analog or Input when I was trying to OC the memory.

Honestly I don’t know, that was just my case and i’m not sure why it would only work when all slots were occupied. I guess just your typical pos tier asus product so nothing out of the ordinary. Hoping to snag a Maximus VII itx board in the future to throw the 5775C in for a portable gaming pc.
05-27-2020 11:05 PM
TrantaLocked
Quote: Originally Posted by TwilightRavens View Post
I was only ever able to run 2400MHz with 4 x 8GB sticks, i’m not sure why but any less and it would not post at 2400MHz, 3 x 8GB got me to 2133MHz, 2 x 8GB at 2000MHz and 1 x 8GB I couldn’t go any higher than 1600MHz and that took 1.9v to achieve, with that at 1.5v it was locked at 1333MHz, and sometimes it would cause a bluescreen after a few hours. I was also running 4.4GHz core/4.0GHz cache, 1.65v ram, 1.25v system agent, 1.15 ioa and iod with 1.940v input. Even then only sometimes would it post from a cold boot, I suspect it was my garbage tier board though and not the cpu as it always did a lot of weird things. XMP did not work at all and I had to manually set timings to what my kit was specced for.

Since upgrading to my 3900X/X570 Taichi I tried giving it an idgaf overclock to see if I could get anything back to what it used to be and nothing over stock clocks will post, even setting ridiculous voltages like 1.7-1.8v vcore did absolutely nothing. At 100% bone stock its works out of the box, about to replace the 5775C with an i3-4130T

Why would more sticks help rather than hurt? Did you need to increase IO Analog and Input because I was only touching Digital, never touched IO Analog or Input when I was trying to OC the memory.
05-27-2020 04:05 PM
Groove2013 Waiting for another i7-5775C from Ali for "just" $175. Just because why not.
It's a G0 stepping, not E0, unfortunately.
FPS and frametime in games I play are more than just good on the current one 4.3/3.8 GHz.
I have only a 60 Hz monitor.
Hope the one I'm waiting for, won't be too bad )
05-27-2020 11:38 AM
TwilightRavens
Intel Broadwell-C (5675C/5775C) Ownership Club

Quote: Originally Posted by TrantaLocked View Post
What should I do to achieve stable RAM OC? I can reach 2133 but not 2400 on a G.Skill TridentX dual stick kit rated for 2400. The CPU is at 4.2GHz. What are the steps I take to figure out what the problem is?

If someone who has done the i7-5775c at 4.2GHz core, 4GHz uncore, with 2x8GB DDR3, the exact voltages and timing you used for both the CPU and RAM to get 2400 to work? I was close to getting stable on 2400 when I raised some voltages a bit, but I was still seeing the "bit flip" vulnerability warning in memtest86, which pretty much means I'm too close to instability to want to be there. I didn't touch a couple things like CPU core which I've kept the same at 1.26 as I always do, and some other voltages I didn't trial and error a ton. Also not sure how auto training could be affecting it.

I can't even get it stable at 2400 with the CPU at stock. SA and IO digital don't seem to make much of a difference, RAM even at 1.65v for testing even though I really don't want it that high. Maybe it's IO analog, which I haven't touched? Maybe CPU voltage matters for RAM overclock even if CPU itself isn't overclocked? I feel like there's something I'm just missing. My MSI Z97M-G43 offiically supports up to 3300MHz DDR3, but maybe it's still a bad motherboard anyway?

Edit: This may be a very long post as I add updates. I decided to trust the advice that RAM voltage doesn't directly affect the IMC or CPU, and bumped the voltage to 1.7v. Now I get a clean test on the TridentX @2400 @1.7v, SA and VCCIO Digital are both 1.15v just because I was lazy, those two can probably be lower. I'll be testing voltages a bit and then see if I can match the 2400MHz setting with the i7-5775c @4.2GHz, as current testing is still with CPU at stock.

Edit 2: It wasn't actually stable at 1.7v, but seemed okish at 1.77. Then I turned the CPU OC back on, and again failing the hammer test in memtest86. I tried one more time at 1.78v and no luck. I won't go any further, I don't think it's possible to go 2400 with the CPU OC on my current config. I may consider getting better RAM one day because RAM speed these days matters a lot for gaming performance, but if I have to spend more than $100 after selling my current kit I'd rather just upgrade the GPU first. Other than that, I'll be doing a complete new build for Alder Lake in late 2021.

Quote: Originally Posted by TrantaLocked View Post
What should I do to achieve stable RAM OC? I can reach 2133 but not 2400 on a G.Skill TridentX dual stick kit rated for 2400. The CPU is at 4.2GHz. What are the steps I take to figure out what the problem is?

If someone who has done the i7-5775c at 4.2GHz core, 4GHz uncore, with 2x8GB DDR3, the exact voltages and timing you used for both the CPU and RAM to get 2400 to work? I was close to getting stable on 2400 when I raised some voltages a bit, but I was still seeing the "bit flip" vulnerability warning in memtest86, which pretty much means I'm too close to instability to want to be there. I didn't touch a couple things like CPU core which I've kept the same at 1.26 as I always do, and some other voltages I didn't trial and error a ton. Also not sure how auto training could be affecting it.

I can't even get it stable at 2400 with the CPU at stock. SA and IO digital don't seem to make much of a difference, RAM even at 1.65v for testing even though I really don't want it that high. Maybe it's IO analog, which I haven't touched? Maybe CPU voltage matters for RAM overclock even if CPU itself isn't overclocked? I feel like there's something I'm just missing. My MSI Z97M-G43 offiically supports up to 3300MHz DDR3, but maybe it's still a bad motherboard anyway?

Edit: This may be a very long post as I add updates. I decided to trust the advice that RAM voltage doesn't directly affect the IMC or CPU, and bumped the voltage to 1.7v. Now I get a clean test on the TridentX @2400 @1.7v, SA and VCCIO Digital are both 1.15v just because I was lazy, those two can probably be lower. I'll be testing voltages a bit and then see if I can match the 2400MHz setting with the i7-5775c @4.2GHz, as current testing is still with CPU at stock.

Edit 2: It wasn't actually stable at 1.7v, but seemed okish at 1.77. Then I turned the CPU OC back on, and again failing the hammer test in memtest86. I tried one more time at 1.78v and no luck. I won't go any further, I don't think it's possible to go 2400 with the CPU OC on my current config. I may consider getting better RAM one day because RAM speed these days matters a lot for gaming performance, but if I have to spend more than $100 after selling my current kit I'd rather just upgrade the GPU first. Other than that, I'll be doing a complete new build for Alder Lake in late 2021.

I was only ever able to run 2400MHz with 4 x 8GB sticks, i’m not sure why but any less and it would not post at 2400MHz, 3 x 8GB got me to 2133MHz, 2 x 8GB at 2000MHz and 1 x 8GB I couldn’t go any higher than 1600MHz and that took 1.9v to achieve, with that at 1.5v it was locked at 1333MHz, and sometimes it would cause a bluescreen after a few hours. I was also running 4.4GHz core/4.0GHz cache, 1.65v ram, 1.25v system agent, 1.15 ioa and iod with 1.940v input. Even then only sometimes would it post from a cold boot, I suspect it was my garbage tier board though and not the cpu as it always did a lot of weird things. XMP did not work at all and I had to manually set timings to what my kit was specced for.

Since upgrading to my 3900X/X570 Taichi I tried giving it an idgaf overclock to see if I could get anything back to what it used to be and nothing over stock clocks will post, even setting ridiculous voltages like 1.7-1.8v vcore did absolutely nothing. At 100% bone stock its works out of the box, about to replace the 5775C with an i3-4130T
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