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Z790 APEX Availability Overclocking and Playtime Thread : )

iBruceypoo
Level 16
Newegg listing November 2nd and 3rd:

96062

Newegg listing November 4th, today:

96063

Did Newegg sell out their known incoming quantity of boards as Pre-Orders in 48hours? OR did they simply change the purchasing status?

Who knows right?

Did anyone grab a pre-order?
Z790 Epiphenomenal Raptor Bench

ROG Z790 Apex / Intel 13900KS SP111 P121 E93 MC83
Gskill 8000 kit - TM5 stable at 8200MT/s 38 48 48 121 VDD and VDDQ 1.5v
WD_Black SN850X 1TB 7300MB/s Reads 6300MB/s Writes
LG 32in 4K IPS 32UP83A-W
607 Views
1,467 REPLIES 1,467

SightUp1
Level 7
Okay I scaled it back. I only edited the two voltage settings that you told me to and set the memory controller back to auto. I also change the timings back to stock.

Testmem5 completed without any errors. What is our next step?

iBruceypoo
Level 16
You got 8000 34 46 46 121 stable? Next, save your profile to USB drive.

Congratulations, if it's truly stable your PC should feel super-responsive. Next? Take a break make a pizza. lol

After you have your current profile backed-up to external USB drive.

1) Either remain at 8000 1.5v and try tightening your timings 121 down to 97 or even 87. I don't think you can drop 46 46 to 44 44, but worth a try. 🙂

OR

2) use your current 8000 profile loosen timings back to CL38 48 48 128 move VDD and VDDQ to 1.55v and 8000 to 8200 - see if you can grab 8200MT/s WOW! 🙂

I have not gone beyond that point, please don't attempt any voltage higher than 1.55v. Seems like you have an amazing 7800 kit. Big Smile : )

Wish I had that mem kit. lol
Z790 Epiphenomenal Raptor Bench

ROG Z790 Apex / Intel 13900KS SP111 P121 E93 MC83
Gskill 8000 kit - TM5 stable at 8200MT/s 38 48 48 121 VDD and VDDQ 1.5v
WD_Black SN850X 1TB 7300MB/s Reads 6300MB/s Writes
LG 32in 4K IPS 32UP83A-W

JohnAb
Level 17
Ooh, those beers look magnificent. I'm so tempted 🙂
Z690 Hero, 12900K, BIOS 4001, MEI 2433.6.3.0, ME Firmware 16.1.35.2557, 7000X Case, RM1000x PSU, ASUS TUF OC 3090TI, 2 x 16GB Corsair RAM @ 5200MHz, Windows 11 Pro 23H2, Corsair H150i Elite AIO, 4x Corsair RGB fans, 3x M.2 NVME drives, 2x SATA SSDs, 2x SATA HDs.

JohnAb wrote:
Ooh, those beers look magnificent. I'm so tempted 🙂


It's after 2pm here, a little early but opening a Czechvar. lol 😛
Z790 Epiphenomenal Raptor Bench

ROG Z790 Apex / Intel 13900KS SP111 P121 E93 MC83
Gskill 8000 kit - TM5 stable at 8200MT/s 38 48 48 121 VDD and VDDQ 1.5v
WD_Black SN850X 1TB 7300MB/s Reads 6300MB/s Writes
LG 32in 4K IPS 32UP83A-W

SightUp1
Level 7
During stress testing, what kind of temperature should I expect to see? What should I not allow them to go above?

SightUp1 wrote:
During stress testing, what kind of temperature should I expect to see? What should I not allow them to go above?


With TM5 memory stress test your CPU and mem kit will get a good workout, but thermals will not go very high maybe 50C 60C for your CPU and mem kit if no dedicated fan maybe 46C-48C, with fan about 38C. My 7600 ddr5 modules run up at 38C to 40C (maybe 42C briefly) during the TM5 test but that's with an 80mm Noctua fan running at 1000rpm, then drop back down to 34C-35C after the test is complete.

All depends on your ambient temp and airflow over the mem kit modules.

Stress tests like Prime 95? Depending on which test in that package you choose, could be anywhere from CPU 80C to 100C.

------

I don't know your setup, but if running 1.4v for memory I did not use a dedicated fan. At 1.45v probably also ok without a dedicated fan, but depends on ambient room temp. With 1.5v and 1.55v VDD and VDDQ I would add some airflow to your ddr5 mem modules from somewhere inside your case or if like me using a test bench, I added an 80mm fan that cools the ddr5 mem kit very well at only 800rpm to 1000rpm, and it's inaudible, no sound from the fan at those speeds.

This fan if someone needs one to Velcro mount to their case or test bench:

https://noctua.at/en/products/fan/nf-a8-pwm-chromax-black-swap

The tiny ddr5 fan that arrives with your Z790 Apex board inside the box is ok to get you started, but the 80mm Noctua is 10times better, more airflow and much less noise to no sound at all, and it's only $20. 🙂
Z790 Epiphenomenal Raptor Bench

ROG Z790 Apex / Intel 13900KS SP111 P121 E93 MC83
Gskill 8000 kit - TM5 stable at 8200MT/s 38 48 48 121 VDD and VDDQ 1.5v
WD_Black SN850X 1TB 7300MB/s Reads 6300MB/s Writes
LG 32in 4K IPS 32UP83A-W

SightUp1
Level 7
Just for verification I tried it again and it failed.

Here are the only settings that I have changed pertaining RAM.

AI overclock tuner = manual
DRAM frequency = DDR5-8000
DRAM cas latency = 36
DRAM ras to cas delay read = 46
DRAM ras to cas delay write = 46
DRAM PRE Time = 46
DRAM ras act time = 125
DRAM command rate = 2N
Hi DRAM voltage mode = enabled
DRAM VDD voltage = 1.5
DRAM DDQ voltage = 1.5
PMIC voltages = sync all pmics

What should I change from here?

SightUp1 wrote:
Just for verification I tried it again and it failed.

Here are the only settings that I have changed pertaining RAM.

AI overclock tuner = manual
DRAM frequency = DDR5-8000
DRAM cas latency = 36
DRAM ras to cas delay read = 46
DRAM ras to cas delay write = 46
DRAM PRE Time = 46
DRAM ras act time = 125
DRAM command rate = 2N
Hi DRAM voltage mode = enabled
DRAM VDD voltage = 1.5
DRAM DDQ voltage = 1.5
PMIC voltages = sync all pmics

What should I change from here?


These settings below are exactly where I'm TM5 stable with my 7600 kit:

Use it as a template. I can also drop my CL to 34, but I do that LATER after saving the basic profile. If you are just starting out mem overclocking and all your gear is brand new, stick with XMP 1, until you know your way around the bios better. 🙂

AI overclock tuner = XMP 1
DRAM frequency = DDR5-8000
DRAM cas latency = 36
DRAM ras to cas delay read = 46
DRAM ras to cas delay write = 46
DRAM PRE Time = 46
DRAM ras act time = 121
DRAM command rate = Auto
Hi DRAM voltage mode = enabled
DRAM VDD voltage = 1.5
DRAM DDQ voltage = 1.5
PMIC voltages = Auto or default setting

Did you save your stable 8000 CL34 profile to USB drive?
Z790 Epiphenomenal Raptor Bench

ROG Z790 Apex / Intel 13900KS SP111 P121 E93 MC83
Gskill 8000 kit - TM5 stable at 8200MT/s 38 48 48 121 VDD and VDDQ 1.5v
WD_Black SN850X 1TB 7300MB/s Reads 6300MB/s Writes
LG 32in 4K IPS 32UP83A-W

There has been a trademark war between the US Budweiser and the Czech beer, which is not the same at all, for years
Z690 Hero, 12900K, BIOS 4001, MEI 2433.6.3.0, ME Firmware 16.1.35.2557, 7000X Case, RM1000x PSU, ASUS TUF OC 3090TI, 2 x 16GB Corsair RAM @ 5200MHz, Windows 11 Pro 23H2, Corsair H150i Elite AIO, 4x Corsair RGB fans, 3x M.2 NVME drives, 2x SATA SSDs, 2x SATA HDs.

JohnAb wrote:
There has been a trademark war between the US Budweiser and the Czech beer, which is not the same at all, for years


Is the beer also different? Cuz it seems pretty darn tasty so far, expensive but tasty. lol :cool:

Wish I had a Growler full of Czechvar. 😮
Z790 Epiphenomenal Raptor Bench

ROG Z790 Apex / Intel 13900KS SP111 P121 E93 MC83
Gskill 8000 kit - TM5 stable at 8200MT/s 38 48 48 121 VDD and VDDQ 1.5v
WD_Black SN850X 1TB 7300MB/s Reads 6300MB/s Writes
LG 32in 4K IPS 32UP83A-W