intel 13/14th gen fast RAM experiences: >7,000 MT/s is XMP stable!

[fusseli]

A while back with 13th gen I had seen that ~7000 mt/s RAM made a pretty decent difference, both hpc tasks and gaming benefit. So I built an hpc rig at work with a 13900ks and 4x16gb of DDR5-7200 CL34, turns out with 4 sticks it's not stable above 6400 mt/s. It's nbd, it's still a blazing fast work rig. Then, I just rebuilt my home system with a 14700k and a refresh z790 Gigabyte Elite X Wifi7 motherboard that has better RAM support than original one year old z790. I've been considering to consider a 14900ks if it comes out and isn't gouging in price, which should bode even better for fast RAM if the memory controllers are also better on the binned cpus. I had tried fast RAM on my old Z490/10th gen platform, which it was supposed to support, and ddr4-4500 and ddr4-5000 failed miserably to be stable and I ended up going with 7.8ns ddr4-3600 C14. I'm noticed there isn't low latency lower speed DDR5 to speak of so I started off with the higher speed mid 9ns range since that's as fast as it gets in DDR5.

I started with Corsair Vengeance 2x16gb DDR5-7200 CL34, result using stock XMP: stable on 4 passes of memtest. Benchmark results: https://www.3dmark.com/spy/43760133

Yesterday I swapped in G.Skill Trident Z 2x16gb DDR5-7800 CL36, result using stock XMP: stable on 4 passes of memtest. Benchmark results: https://www.3dmark.com/spy/43810265 this is a gain of 700 or so in cpu gaming score

I want to share my experiences and hear from others on fast ram and measured benefits on this platform, what's your experience been? This is also for the benefit of anyone building with 14th gen intel. So far the fast RAM rumors appear to be A+ true this time

 

[ir_cow]

Now download memtest5 and try again !

But still congrats on your memory XMP adventures. Not a lot of Motherboards can run 7800.

 

[fusseli]

Now download memtest5 and try again !

But still congrats on your memory XMP adventures. Not a lot of Motherboards can run 7800.

Will do.

Yeah my big disappointment was my work 13900ks not being able to run 4 sticks at 7200 despite using a grossly overpriced Asus z790 Hero motherboard. These refreshed z790s are another story! The Aorus Elite X WiFi 7 is on sale now for $249, less than half the cost of the pointless Hero.

 

[Upgrayedd]

Did you try OCing the corsair kit? Raising the frequency from the stock XMP profile.

I just put together a new machine, 14700K and Asus Z790 A Gaming WiFi 2. GSkill 7800 didn't have a chance. I did find out I had my mounting pressures too tight and loosened it up a bit and got more speed out. I got a patriot kit in tight now I'm testing. I think my limit is going to be about 7000-7200.
With the gskill 7800 kit the fastest I could run it error free was manually dropped to 7000 at 7800 xmp mode. I took it back for this 7200 patriot kit. The patriot kit comes with 3 XMP profiles at different speeds. The 6800 profile gave me a couple errors so I put it on xmp7000 and tuned it down to 6800 and it passes. Tried XMP 7200 manually dropped to 7000 and started getting errors. I might try to match timings from another kit since this kit seems to be tighter timed than other kits at the same frequencies

 

[fusseli]

Did you try OCing the corsair kit? Raising the frequency from the stock XMP profile.

I just put together a new machine, 14700K and Asus Z790 A Gaming WiFi 2. GSkill 7800 didn't have a chance. I did find out I had my mounting pressures too tight and loosened it up a bit and got more speed out. I got a patriot kit in tight now I'm testing. I think my limit is going to be about 7000-7200.
With the gskill 7800 kit the fastest I could run it error free was manually dropped to 7000 at 7800 xmp mode. I took it back for this 7200 patriot kit. The patriot kit comes with 3 XMP profiles at different speeds. The 6800 profile gave me a couple errors so I put it on xmp7000 and tuned it down to 6800 and it passes. Tried XMP 7200 manually dropped to 7000 and started getting errors. I might try to match timings from another kit since this kit seems to be tighter timed than other kits at the same frequencies

Only in the 4x16gb 7200 on the 13900ks and z790 hero; same as you it only ran error free at XMP but turned down manually to 6400.

I did not try messing with or manual OC on the 2x16gb 7200 on the 14700k and new z790. I just went straight to the gskill 7800 kit.

 

[Dr. Dro]

Nice. My MSI Z690 Ace doesn't like anything above 6400, it'll tighten all the way to C30 with tertiaries tweaked but, 6800 is a no go, even though I have the precise kit that supports 6800 on the QVL.

I've been on the lookout for some 1DPC boards, preferably ITX form factor so I could play with the RAM, but it seems like the B760 chipset has a voltage lock, and it's rather expensive to source a Z790 ITX - not worth the investment against the performance i'd gain, if any, given my RAM is pretty tightened out.

 

[Upgrayedd]

Only in the 4x16gb 7200 on the 13900ks and z790 hero; same as you it only ran error free at XMP but turned down manually to 6400.

I did not try messing with or manual OC on the 2x16gb 7200 on the 14700k and new z790. I just went straight to the gskill 7800 kit.

Yeah my 7800 kit was just erroring instantly and wouldn't even post on the original bios. I'd say you got a pretty good CPU draw.
I will be sure to exclusively buy dual dimm boards in the future though.

 

[fusseli]

Where is this dual dimm and ITX nonsense coming from? Are people confused with running two sticks versus four sticks in a four slot board? My experiences empirically show that it’s running four sticks, not four a lot boards, being the high speed limiter.

 

[ir_cow]

Where is this dual dimm and ITX nonsense coming from?

It's not none-sense. Very well known 2-slot motherboards do much better with memory.

Once you start running y-cruncher or memtest 5 for true stability testing, you'll quickly realized two slot motherboards are essential to higher memory speeds.

Edit: I'll take 2x32 7200 over 4x16 any day of the week. The amount of hassle it is to attempt to stabilize that is ridiculous.

 

[Upgrayedd]

Hell idk I thought it was about traces being shorter. In 2 slot board the 2nd stick is the same distance as the 1st stick in a 4slot board.

But about your screenshot. I'm curious about the cache speeds and the difference in mine.
Yours: L1 459 GB/s : L2 87 GB/s : L3 38 GB/s : mem 24 GB/s

Mine: L1 700 GB/s : L2 132 GB/s : L3 46 GB/s : mem 26.8 GB/s

 

[fusseli]

Hell idk I thought it was about traces being shorter. In 2 slot board the 2nd stick is the same distance as the 1st stick in a 4slot board.

But about your screenshot. I'm curious about the cache speeds and the difference in mine.
Yours: L1 459 GB/s : L2 87 GB/s : L3 38 GB/s : mem 24 GB/s

Mine: L1 700 GB/s : L2 132 GB/s : L3 46 GB/s : mem 26.8 GB/s

I have no idea what’s up with the cache speed differences. What mob and tweaks do you have applied or is it stock?

and why worry about, or add to the conjecture, of 2 slot boards when I’m out of the box stable at 7800 cl36

 

[Upgrayedd]

I have no idea what’s up with the cache speed differences. What mob and tweaks do you have applied or is it stock?

and why worry about, or add to the conjecture, of 2 slot boards when I’m out of the box stable at 7800 cl36

I have a Z790 Asus A Gaming WiFi II, 14700K and this kit is a 2x16 7200 patriot kit. It comes with 3 profiles but none are stable at stock xmp. I had to use the 6800 profile and change the voltage from 1.4v to 1.46v to get it to pass anything.
At first I had problem with mounting pressures being too high so I loosened it and got some more speed out. But that pressure troubleshooting was done with a different kit that was 7800.

My passing memtest was just MCE OFF, 6800 xmp with 1.46v.
I wonder if you're in gear 4 instead of gear 2?

 

[dgianstefani]

I have no idea what’s up with the cache speed differences. What mob and tweaks do you have applied or is it stock?

and why worry about, or add to the conjecture, of 2 slot boards when I’m out of the box stable at 7800 cl36

Run karhu or memtest5 all night and post results, very doubtful you're stable at 7800 on four DIMMs.

 

[Upgrayedd]

Run karhu or memtest5 all night and post results, very doubtful you're stable at 7800 on four DIMMs.

They're using 2 sticks. 2x16GB

 

[dgianstefani]

It's a four DIMM board though.

 

[fusseli]

I used the latest memtest from the memtest86 site. Are you guys actually suggesting TestMem5?

 

[Upgrayedd]

I used the latest memtest from the memtest86 site. Are you guys actually suggesting TestMem5?

I was using the one included with my board v10.0. I ended up getting 10.6 like your screenshot. I haven't ran memtest5 yet until I can get a good pass on this one first with basic xmp. I'm having a lot of trouble with the mounting pressure of my contact frame.

 

[fusseli]

Run karhu or memtest5 all night and post results, very doubtful you're stable at 7800 on four DIMMs.

It passes memtest, which I've used for years finding stability, and it never causes app or games crashes in use... that's a pass in my book, who cares what some obscure overnight test results suggest. That being said I'll happily throw whatever at it. So far I'm stable 2 sticks of 7800 c36 in 4 passes of memtest 8-cores active, and memory stress test in intel XTU all 20 cores active. I'll try a y-cruncher, and can you clarify TestMem5 or where to get it?

I was using the one included with my board v10.0. I ended up getting 10.6 like your screenshot. I haven't ran memtest5 yet until I can get a good pass on this one first with basic xmp. I'm having a lot of trouble with the mounting pressure of my contact frame.

Interesting, they called me crazy for not using a contact frame with my AIO in my build thread. 20 cores active stock 14700k I don't break 85 C; I'm not sure I need the "miracle" $10 add-on.

 

[ir_cow]

I used the latest memtest from the memtest86 site. Are you guys actually suggesting TestMem5?

Yes. It's a windows program, so you need to be able to boot into windows.

Memtest86 is straight up does not hammer the ram hard enough. I'll pass it and blue screen immediately in widows lol.

Memory Testing with TestMem5 TM5 with custom configs

www.overclock.net

Load up 1usmus_v3.cfg
3 rounds is default. You can change the config file to 25 with text editor.

Probably want some airflow on your ram too, it can get toasty.

 

[Launcestonian]

OP, after running MT86 successfully, I would advice once after booting into windows to run windows memory diagnostics first before launching 3rd party tools like TM5, etc..
If you don't, run the risk of corrupting the OS when its under extreme IMC load.

 

[fusseli]

OP, after running MT86 successfully, I would advice once after booting into windows to run windows memory diagnostics first before launching 3rd party tools like TM5, etc..
If you don't, run the risk of corrupting the OS when its under extreme IMC load.

Thanks for the tip, I have had problems exiting memtest and booting straight to Windows before and I usually just restart a few times and the startup hangs go away.

One cycle done, too easy? I'm looking for a dram temp monitoring program now. Unfortunately I've found my first gripe about the new Gigabyte control center, it doesn't have SIV system information viewer anymore. And When I had the Corsiar Vengeance 7200, the dram temp was visible in iCUE. But now with this gskill it isn't visible anywhere. Although minor this is a legit reason to have considered Dominators over gskill especially since I have Corsair kbm. Damn it!

Whoops my bad, one more time with admin launch (I don't like admin priv and 3rd party foreign apps, but oh well this is empirical experimentation and science at stake here):

XTU monitoring while running testmem5:

 

[Launcestonian]

Thanks for the tip, I have had problems exiting memtest and botting straight to Windows before and I usually just restart a few times and the startup hangs go away.

One cycle done, too easy? I'm looking for a dram temp monitoring program now. Unfortunately I've found my first gripe about the new Gigabyte control center, it doesn't have SIV system information viewer anymore. And When I had the Corsiar Vengeance 7200, the dram temp was visible in iCUE. But now with this gskill it isn't visible anywhere.

View attachment 325382

XTU monitoring while running testmem5:
View attachment 325383

That's odd with the restarts after MT86. On AM5 platforms I've never had that problem no matter what agesa of bios versions. But anyway, your on Intel however the last time I used XTU to monitor hardware stats was with socket 1200. Try using HWiNFO for comparison instead? There's a DRAM monitoring field in that app.

 

[ir_cow]

One cycle done, too easy? I'm looking for a dram temp monitoring

XTU monitoring while running

I use HWMointor. It has all the sensors and some you didn't even know about.

The only sensor on the memory itself is next to the SPD chip (at the middle top). It's not the IC temps. You will error out at 65-70c for like mid-range stuff and much lower if your tweaking the sub-timings like tRFC and tREFI.

3 cycle tells you that at least browsing the web and some gaming will be fine. 25 if your looking for real uptime.

I cheat and do like 5 loops and y-cruncher 2.5b. That's good enough for me until I have real time to run something overnight.

 

[Dr. Dro]

Interesting, they called me crazy for not using a contact frame with my AIO in my build thread. 20 cores active stock 14700k I don't break 85 C; I'm not sure I need the "miracle" $10 add-on.

Trust me, the contact frame is great, and you should buy one IMO. I've been using one with my build from the beginning. It's not supposed to be a miracle, but it fixes a very real mechanical fault of the LGA 1700 socket. You may see it pan out to be a worthy investment with thermal cycling over time. Given I spent circa $800 on my i9-13900KS, what was adding a $10 BCF to the budget anyway...

Thanks for the tip, I have had problems exiting memtest and booting straight to Windows before and I usually just restart a few times and the startup hangs go away.

One cycle done, too easy? I'm looking for a dram temp monitoring program now. Unfortunately I've found my first gripe about the new Gigabyte control center, it doesn't have SIV system information viewer anymore. And When I had the Corsiar Vengeance 7200, the dram temp was visible in iCUE. But now with this gskill it isn't visible anywhere. Although minor this is a legit reason to have considered Dominators over gskill especially since I have Corsair kbm. Damn it!

View attachment 325382

Whoops my bad, one more time with admin launch (I don't like admin priv and 3rd party foreign apps, but oh well this is empirical experimentation and science at stake here):
View attachment 325385

XTU monitoring while running testmem5:
View attachment 325383

You should run the Extreme1@anta777 profile on TestMem5, and run it as admin. Leave paging enabled, or it won't work. My system would pass the default preset but error out with that one. Also, y-cruncher VST test makes these CPUs error out exceptionally fast.

7800 on a good Z790 board, even a 4-dimmer, isn't entirely unheard of, so I think that with some work, you can get it stable.

 

[fusseli]

memtest5 1usmus_v3.cfg was easy, what's next? This is the hottest I've ever seen my ram get btw... ever, in 20 years (caveat: every time I've ever looked and within the legacy of even being able to view dram temps). It crested 60 C and I turned my case fans on full blast for the rest.

Trust me, the contact frame is great, and you should buy one IMO. I've been using one with my build from the beginning. It's not supposed to be a miracle, but it fixes a very real mechanical fault of the LGA 1700 socket. You may see it pan out to be a worthy investment with thermal cycling over time. Given I spent circa $800 on my i9-13900KS, what was adding a $10 BCF to the budget anyway...



You should run the Extreme1@anta777 profile on TestMem5, and run it as admin. Leave paging enabled, or it won't work. My system would pass the default preset but error out with that one. Also, y-cruncher VST test makes these CPUs error out exceptionally fast.

7800 on a good Z790 board, even a 4-dimmer, isn't entirely unheard of, so I think that with some work, you can get it stable.

I'm already stable until proven otherwise

I use HWMointor. It has all the sensors and some you didn't even know about.

The only sensor on the memory itself is next to the SPD chip (at the middle top). It's not the IC temps. You will error out at 65-70c for like mid-range stuff and much lower if your tweaking the sub-timings like tRFC and tREFI.

3 cycle tells you that at least browsing the web and some gaming will be fine. 25 if your looking for real uptime.

I cheat and do like 5 loops and y-cruncher 2.5b. That's good enough for me until I have real time to run something overnight.

I agree. With my work hpc 13900ks and 4 sticks only stable to 6400 mt/s, I ran it overnight memtest stable and called it good. This is my home pc and I am unlikely to ever leave it overnight or weekend with a real workload, unlike my work pc. In the meantime the goal is to see how far I can trounce the x3d gamerz fanboys. Whoops the tequila actually typed that, not me.